Instructions for use of tanks with sug. Instructions for loading, unloading and transportation of liquefied hydrocarbon gases in railway tank cars. Transportation of liquefied petroleum gases by sea

13.1. Liquefied hydrocarbon gases (LHG) are delivered to filling stations in special truck tanks.

13.2. Draining LPG from tank trucks is a gas hazardous work and must be carried out in compliance with safety rules, these Rules and the production instructions.

13.3. As a rule, LPG is discharged from truck tanks only during daylight hours.

13.4. Truck tanks must be equipped with:
an exhaust pipe with a silencer brought to its front;
the exhaust pipe must have a spark arresting grid;
the autogas carrier must have two carbon dioxide fire extinguishers.

13.5. Automobile tanks at the filling station are accepted and inspected.

13.6. When accepting road tanks, the following is checked:
compliance of the tank and the amount of filled LPG with the shipping documents;
the presence of seals on the drain fittings;
no damage to the tank body and serviceability of shut-off and control valves and rubber-fabric sleeves;
the presence and level of LPG in the tank according to the control valves and level gauge.

13.7. The shipping documents indicate: the name of the supplier, the date of shipment, the number of the tank, the mass (weight) of the gas filled into the tank.

13.8. The serviceability of the shut-off valves on the tank is checked by external inspection.
Valves should be opened smoothly, without causing hydraulic shocks.

13.9. Preparation for unloading and unloading of LPG from automobile tanks into gas filling station tanks is carried out by cylinder fillers and repairmen under the guidance of a shift foreman. During the drain operation, at least two people of the filling station service personnel must be present.

13.10. Prior to the start of the LPG drain from the truck tank, the service personnel of the filling station performs:
secures the tank car with special wooden shoes or shoes made of non-sparking metal;
checks the serviceability and reliability of flexible hoses for draining LPG from a tank car;
grounds the truck tank.

13.11. Permission to drain LPG from a tank car is issued by a shift foreman and manages the persons involved in the discharge of LPG.

13.12. Draining of LPG from an automobile tank into tanks is allowed after checking the correct opening and closing of valves associated with the technological operation of draining LPG.

13.13. Draining operations must be carried out by personnel in standard work clothes, headgear and goggles.

13.14. Draining of LPG from truck tanks at gas filling stations is carried out by one of the following methods:
creating the necessary pressure drop between the tank truck and the tank by injecting the LPG vapor from the tank of another group into the tank car by the compressor;
creating a pressure drop between the truck tank and the tank by heating the LPG vapor in the evaporator;
pumping LPG pumps;
by gravity, when the tanks to be filled are located below the truck tank.

13.15. It is not allowed to create a pressure difference between the tank truck and the tank by releasing the gas vapor phase from the tank being filled into the atmosphere.

13.16. The pressure of the vapor phase injected by the compressor or created by the evaporator in the truck tank must not exceed the working pressure indicated on the truck tank.
When the pressure in the truck tank rises above the working one, the compressor or evaporator must be turned off.

13.17. The pressure drop between the truck tank and the tank is generally allowed to be 0.15 - 0.2 MPa.

13.18. When draining LPG from automobile tanks, the operation of the car engine is not allowed.

13.19. After completion of the preparatory operations for draining the LPG and checking the tanker by the service personnel, before removing the seals from the drain fittings, the driver is obliged to hand over the ignition keys to the shift foreman of the filling station.

13.20. The presence of the driver during the discharge of LPG in the cab is not allowed.

13.21. It is allowed to remove the plugs from the drain fittings of the automobile tank only after the vehicle engine is stopped, and it is allowed to turn on the engine only after disconnecting the hoses from the gas filling station process gas pipelines and installing plugs on the drain fittings.

13.22. After draining the LPG, the vapors should be removed from the truck tank to a pressure of 0.05 MPa.
Discharge of gas into the atmosphere is not allowed.

13.23. During the draining of the LPG, there should not be any service personnel nearby who are not involved in the draining operation.

13.24. It is not allowed to leave automobile tanks connected to the technological gas pipelines of gas filling stations during the period when LPG is not drained.

13.25. The personnel involved in the discharge are obliged to monitor the tightness of all connections of process gas pipelines, tanks and tank trucks. If a gas leak is detected, the drain is stopped and measures are taken to eliminate it.

13.26. During the LPG drain, it is not allowed to carry out any work to seal the joints under pressure; it is allowed to disconnect the flexible hoses of the truck tank only after it has been turned off and the pressure in the drain hoses has been relieved.

13.27. It is not allowed to leave an automobile tank, discharge gas pipelines, tanks, operating compressors, pumps and evaporators unattended during the LPG drain period.

13.28. During the period of draining, continuous monitoring of the pressure and level of gas in the tank truck and the receiving tank must be ensured.
The tanks are filled with LPG to no more than 85% of their geometric volume. In case of tank overflow, the excess gas must be drained into other tanks. The release of excess gas into the atmosphere is not allowed.

13.29. Drainage operations of LPG at filling stations during a thunderstorm, as well as during hot work in the production area, are not allowed.

13.30. During the LPG drain period, visual communication should be provided between the personnel servicing process gas pipelines and equipment (drain columns, compressors, pumps and evaporators).

13.31. At the end of the drain, the valves on the truck tank must be plugged with plugs and checked for leaks with a soapy emulsion.

13.32. Rubber-fabric sleeves (hoses) of automobile tanks must be attached to the drain tip with steel clamps (at least two clamps for each end of the hose). Wire clamps are not allowed.
It is not allowed to drain LPG if the sleeves (hoses) have cracks, fractures, potholes and other damage and consist of separate parts.
Sleeves with external metal spirals are considered unsuitable if the spirals are broken or partially missing.

13.33. To thaw frozen fittings and drain gas pipelines, heated sand, hot water, and steam should be used. Fire is not allowed.

13.34. In the event that an automobile tank with LPG that has a leak arrives at the gas filling station, it must be immediately unloaded according to a special instruction that provides additional measures security. In this case, a defective act is drawn up. It is not allowed to repair the tank car on the territory of the gas filling station.

13.35. It is not allowed to fill tanks with gas in cases provided for by the rules for the device and safe operation pressure vessels, as well as in the following cases:
if cracks, bulges, omissions or sweating in welds are found in the main elements of the tank, leakage in flanged joints, gasket ruptures;
in case of malfunction safety valves;
in case of malfunction of level measuring devices;
in case of malfunction or incomplete number of fasteners on manholes and hatches;
during the settlement of the foundations of tanks and supports of the supply gas pipelines.

13.36. In the room of the pump-compressor department, the technological unit or in the control unit are hung out:
piping scheme of technological equipment with drain, dispensing columns and reservoirs;
scheme for draining LPG from tankers;
production instruction containing technology and safety measures when draining LPG.

13.37. Warning posters with safety requirements when draining LPG from road tanks should be posted in the LPG drain area.

8. Operation of LPG storage base tanks

8.1. General instructions

8.1.1. At the storage base, in a conspicuous place, the production instructions for the operation of the LPG storage base, plans for the localization and elimination of accidents and the evacuation of people from the territory of the HPS in the event of an accident, and the technological scheme for piping the tanks are posted. Instructions issued service personnel on your hands.

Tanks of the LPG storage base can be operated only after they have been registered with the Gosgortekhnadzor of Russia and a permit for their operation has been issued. Permission to put the tank into operation must be recorded in the tank passport.

The withdrawal of LPG tanks from the operating mode to the reserve is carried out in accordance with the production (technological) instructions.

Each tank must have a technical passport drawn up by the manufacturer. In the process of operation, records are made in the reservoir passport about all the work on its repair, inspection and technical certification.

The foreman of the loading and unloading area and the personnel of the LPG storage base monitor the correct filling of the tanks and switch their communications during various LPG pumping operations. When LPG is supplied to the filling compartment and to the columns for filling tankers and gas-balloon vehicles, the personnel, at the direction of the foreman, makes the necessary switching.

8.1.2. It is necessary to put the tanks into operation after technical examination only with the written permission of the management of the LPG facility.

8.1.3. On each tank, a plate with the size of at least 200x150 mm is applied with paint with the following data:

Registration number of the tank;

Permitted pressure in MPa (kgf / cm 2);

Day, month and year of the next external and internal inspections and hydraulic testing.

8.1.4. During the operation of the storage base, the following operations are performed:

Draining LPG from rail tank cars into storage base tanks and supplying LPG from tanks to tank cars;

Supply of LPG from the storage base for filling cylinders and to dispensers for filling tankers and LPG vehicles;

Filling LPG tanks after repair and technical examination and their release before the production of these works;

Maintenance, current repair and inspection of tanks;

Disconnecting gas pipelines from tanks with the installation of plugs and connecting them with the removal of plugs;

Repair and replacement of LPG gas pipelines, valves and instrumentation of the storage base.

8.2. Maintenance of LPG storage tanks

8.2.1. Each tank must be equipped and in good condition:

At least two safety spring valves with a control check lever;

pressure gauge;

Level meter;

Three-way valve for pressure gauge;

Drainage anti-freeze valve (for above-ground tanks).

8.2.2. AT technological scheme storage bases are indicated: the location of the tanks, their numbers, gas pipelines and fittings.

8.2.3. Tanks before filling with LPG are checked for excess pressure.

Overpressure in summer should be at least 0.05 MPa.

For the cold season, when the excess pressure in the tanks can be less than 0.05 MPa, the residual pressure and methods for its measurement are established by the production (technological) instruction. In addition, LPG tanks are checked for leaks.

When filling tanks that do not have LPG residue (new, after technical inspection or repair), LPG should be fed into them slowly to avoid the formation of static electricity in a free-falling jet.

8.2.4. Before the first filling with LPG, tanks and gas pipelines are cleaned of dirt, debris, rust, welding slag in order to avoid clogging of fittings, in addition, they are pressure tested with air or inert gas at a pressure of 0.1 MPa for 30 minutes.

8.2.5. When purging before filling the LPG tanks and gas pipelines, the correct operation of the safety valves is checked.

8.2.6. Before the first filling with LPG, as well as filling after inspection or repair, the tanks and gas pipelines tying them are purged with the LPG vapor phase or inert gas. The purge gas must be vented to the atmosphere through the candles; at the same time, measures must be taken to prevent the LPG from getting into places where it is possible to ignite. Purge is considered complete when the oxygen content in the purge gas is not more than 1% by volume.

8.2.7. Reception of LPG into the tanks of the storage base is carried out by the personnel of the storage base. In this case, the following operations should be performed:

Open valves on the collectors of the vapor and liquid phases of the corresponding group of tanks;

Open the valve on the receiving gas pipeline of the liquid phase of the tank being filled;

Open the valve on the gas pipeline of the vapor phase of the reservoir being filled;

Follow the readings of the manometers. When the pressure in the tank increases above the working one, it is necessary to immediately bypass (pump) LPG from it into another tank or dump part of the vapor phase through a candle until normal pressure is restored;

Continuously monitor the LPG level in the tank.

8.2.8. LPG storage tanks are filled with LPG to no more than 85% of their geometric volume.

8.2.9. When draining LPG from rail tank cars and tank trucks into storage base tanks, both emptying and filling vessels should be monitored.

8.2.10. When a tank overflows, excess gas must be drained into other tanks. It is forbidden to release excess gas into the atmosphere.

8.2.11. After filling the tank, it is necessary to close the valves on the receiving gas pipeline of the liquid phase and on the gas pipeline of the vapor phase of the LPG tank.

8.2.12. Upon completion of the LPG drain from the tanks, it is necessary to close the corresponding valve on the liquid phase intake manifold at the input node of the storage base valves.

8.2.13. When LPG is supplied to the cylinder filling unit and to the dispensers, the operator, at the direction of the foreman of the loading and unloading section, makes the necessary switches.

8.2.14. During the operation of above-ground tanks, the water accumulated in the tanks must be periodically drained through non-freezing drain valves. Drain water should be no earlier than two hours after filling the tank. When draining water, do not allow LPG to leak.

When draining water from the tank, you must perform the following operations:

Check if the valve at the end of the drain pipe is closed;

Open the fully anti-freeze drain valve;

Slowly opening the valve at the end of the drain pipe, drain the water from the tank. In the event of the formation of a “hydrate plug”, stop the operation to drain the water and return the stop valves to their original position.

With the anti-freeze drain valve fully closed, purge the valve at the end of the drain pipe.

The operation of draining water from the tank is repeated 2-3 times until the water is completely removed from it.

8.2.15. Emergency shutdown of tanks is carried out in the cases specified in PB 10-115, as well as:

If cracks, bulging, LPG leakage or sweating in welds are found in the main elements of the tank, leakage in flange joints, gasket ruptures;

In case of malfunction of safety valves, pressure gauges, three-way valves (cracks, leaks, blockages, etc.);

In case of malfunction of level measuring devices;

In case of malfunction or incomplete number of fasteners on manholes and hatches;

In case of unacceptable settlement or buckling of the foundations of tanks and gas pipeline supports;

When there is a power outage;

In case of an accident;

When the operating parameters deviate from the maximum allowable and when the locks of automation systems are triggered in this case.

8.2.16. During an emergency shutdown, personnel must:

Immediately inform the management of the facility about the need and reasons for the emergency shutdown of the tank;

Bypass (or pump) LPG into a free or incompletely filled tank. Open the valves on the tank into which the LPG will be bypassed only after opening the valves in the tank from which the LPG is drained;

Close the shut-off valves on the supply pipelines by installing plugs with protruding shanks;

Pump out the vapor phase from the emergency tank using a compressor to a pressure of 0.05 MPa;

Carry out a thorough inspection of the condition of the emergency tank and eliminate malfunctions after performing appropriate work to ensure safety during emergency work.

8.2.17. In the process of maintenance of the LPG storage base, the personnel performs the following work:

At least once a shift, checks the correctness of the pressure gauge readings, while the pressure gauge needle should stop at zero. The results of checking the pressure gauges are recorded in the operational log;

Periodically monitors the level of the liquid phase and the pressure in the tanks. In working tanks, the level of the liquid phase and pressure is checked every hour, in non-working tanks - at the time of acceptance and delivery of the shift. The measurement results for each tank are recorded in the journal. On the release lines from safety valves, it is not allowed to install shut-off, control valves or other devices that create additional resistance to the release of LPG;

Monitors the cleanliness and serviceability of level indicators;

Constantly monitors the condition of tanks, gas pipelines, fittings, preventing LPG leaks;

Systematically inspects all threaded, flanged and stuffing box connections of LPG tanks, gas pipelines, fittings and instrumentation in order to detect LPG leaks. A significant LPG leak can be detected by ear or by freezing of a defective area. Small leaks are detected at LPG operating pressure using a soapy emulsion or other method. Connections should be checked at least once a month with the results of the check recorded in the operating log. It is forbidden to detect LPG leaks with open fire. After detecting LPG leaks, measures are taken to eliminate them;

Maintains the ladders and service platforms of the tanks in good condition. The use of portable ladders for tank maintenance is not permitted. Marching stairs should be installed at an angle not exceeding 45°;

Monitors the compliance of the actual marks of tanks and gas pipelines with the design ones;

Monitors the state of painting of tanks and gas pipelines;

Monitors the condition of the embankment and transitional stairs through it.

8.2.18. Aboveground tanks are painted in light color for sun protection.

8.2.19. Technical examination of tanks is carried out taking into account the requirements of PB 10-115. Internal inspection - once every four years. Hydraulic test with preliminary internal inspection - once every eight years. For new tanks and after repair - before putting into operation.

The procedure for technical examination and safety measures during the technical examination are determined by PB 10-115 and this section of this OST.

8.2.20. According to the schedule approved by the management of the LPG facility in the prescribed manner, the maintenance and repair personnel perform the following maintenance work:

Checking the safety valves for operation at the setting pressure (at least once a month). After checking and adjustment, safety valves must be sealed. Installing a plug in place of a safety valve removed for inspection or adjustment is prohibited. In place of the removed valve, a serviceable one should be installed. With a working safety valve, the LPG output should stop after the lever is released. The valve must operate when the pressure in the tank rises by no more than 15% above the set working pressure;

Inspection, lubrication and acceleration of the worm of gate valves and valves;

Drainage of water from tanks through drainage devices (as needed).

A complete inspection of tanks with fittings and instrumentation in working condition is carried out at least once every 3 months. An appropriate entry in the journal should be made about the inspection.

8.2.21. The shutdown of tanks for inspection is carried out on the basis of a work order for gas hazardous work, which indicates the number of the tank, the reasons for and timing of the shutdown, the composition of the team and the head of the work.

8.2.22. During internal inspections of tanks, special attention is paid to identifying the following defects:

On the inner and outer surfaces of the tanks - cracks, tears, corrosion of the walls, bulges, changes in the thickness of the spherical bottoms or the cylindrical part of the vessels;

In welded seams - cracks and tears.

8.2.23. Hydraulic testing of tanks is carried out without shut-off and safety valves. In place of the reinforcement, it is necessary to install plugs, which must be made of steel of the same grade as the tanks, and have a thickness not less than the thickness of the spherical bottoms of the vessels.

8.2.24. The exposure time of tanks under test pressure should be at least 10 minutes. After the decline test pressure before the worker, all welded joints and adjacent areas are inspected.

8.2.25. For hydraulic testing, water should be used, while its temperature should be at least 5 ° C higher than the ambient temperature.

The pressure is measured by two verified pressure gauges, one of which is a control one.

8.2.26. The tank is considered to have passed the hydraulic test if it is not found:

signs of a break;

Leaks, tears and sweating in welded joints and on the base metal;

Visible residual deformations.

8.2.27. Inclusion in the operation of tanks after an internal inspection, hydraulic testing should be carried out with the written permission of the management of the facility.

8.3. Maintenance and overhaul of LPG storage tanks

8.3.1. Current and major repairs are carried out in accordance with PB 10-115. During the current repair, the work provided for by maintenance should also be carried out. Unscheduled current repairs are allowed to be carried out if malfunctions are detected that can lead to disruption of technological processes, measures provided for in the instructions should be taken. If troubleshooting is not possible, the tank must be disconnected from the gas pipeline and equipment by installing plugs.

8.3.2. Repair of tanks is carried out if necessary, based on the results of an internal inspection or hydraulic test.

Works on repair, cleaning, internal inspection of LPG tanks in the conditions of an operating facility are classified as gas-hazardous works.

8.3.3. When preparing the tank for repair, it must be disconnected from the ground, ECP, freed from LPG, disconnected from existing gas pipelines using plugs, washed or steamed.

8.3.4. Degassing and preparation of the tank for repair, conservation and dismantling is carried out by the personnel of the loading and unloading area in accordance with this OST.

8.3.5. Before carrying out work inside the tank after disconnecting the tank from the gas pipelines, it is necessary:

Drain the liquid phase of LPG from the tank into another tank;

Reduce the LPG pressure in the tank to atmospheric by pumping out the vapor phase with a compressor. Releasing tanks by venting LPG into the atmosphere through a candle is not allowed;

Drain water and unevaporated residues from the tank;

Disconnect the tank from the pipelines of the liquid and vapor phases by installing plugs;

Blow out the tank with water vapor or rinse with water. At welding work ah inside the tank, steaming is mandatory, but if welding work is not carried out, it is limited to a three-hour rinse with water;

After steaming or washing for three hours, the tank must be left with an open manhole for natural ventilation until it is completely cooled and ventilated. Then, a sample should be taken from the lower horizon of the tank for analysis for the content of LPG vapors. If LPG vapor is found in the tank, steaming or washing is repeated;

After draining the water tank and ventilating it, samples should be taken to determine the vapors of LPG and the sufficiency of oxygen for breathing. The oxygen content in the air must be at least 20.5% by volume, as recorded in the laboratory log. If there is no LPG in the selected sample and the atmosphere is suitable for breathing (for which an act must be drawn up), it is allowed to start working inside the tank (cleaning, internal inspection).

8.3.6. Water vapor is supplied to the steaming tank through the drain fitting, and the outlet is through the ventilation hatch.

8.3.7. All work on shutting down the tank, removing LPG, pyrophoric compounds from it, reducing pressure, disconnecting from technological communications, opening hatches, steaming, flushing, internal inspection, cleaning and repair are gas-hazardous works.

8.3.8. Permission to enter the reservoir for maintenance personnel is given by the head of gas hazardous work.

8.3.9. Before the beginning repair work at the storage base, the serviceability of the operation of the water irrigation system of above-ground reservoirs is checked.

8.3.10. When repairing tanks, all fittings and instrumentation installed on it must be removed, if necessary, repaired and tested in the repair department of the facility or a specialized enterprise.

8.3.11. After the repair is completed, the tank is subjected to a hydraulic test together with the fittings and devices installed on it.

8.3.12. The tank to be installed at the operating facility is transported to the installation site on skids by dragging, while the operation of the entire facility must be stopped for the time the tank is pulled up. The lifting of the tank on the foundation can only be done with the help of masts. At the operating facility (on the territory of the storage base), it is prohibited to use truck cranes to lift tanks to the foundations.

8.3.13. When lifting tanks on the foundations, you should:

Lubricate all rubbing metal parts and assemblies with grease;

If the tank being mounted is an addition to the existing group of tanks and is located on the edge, then it is necessary to drain the LPG from two tanks adjacent to it, disconnect it from the rest gas system, steam them and rinse; if the mounted tank is located among the tanks of the group, then all the tanks adjacent to it are emptied of LPG, disconnected from the gas flow system with plugs, steamed and washed;

The slinging of the tank is carried out by cable loops covering the body. Slinging for fittings and hatches is prohibited.

8.3.14. Installation of tanks is carried out according to the working drawings of the design organization. Deviations and changes are allowed only upon agreement with the design organization.

8.3.15. The connection of the gas pipelines of the tank piping after repair and installation to the existing gas pipelines is carried out in accordance with the requirements of this OST. In this case, it is necessary to free the end sections of the gas pipelines from the liquid phase, relieve the pressure to atmospheric pressure and connect to the tanks (without hot work).

13. Draining liquefied hydrocarbon gases(LHG) to tanks

13.1. Liquefied hydrocarbon gases (LHG) are delivered to filling stations in special truck tanks.

13.2. Draining LPG from tank trucks is a gas hazardous work and must be carried out in compliance with safety rules, these Rules and the production instructions.

13.3. As a rule, LPG is discharged from truck tanks only during daylight hours.

13.4. Truck tanks must be equipped with:

an exhaust pipe with a silencer brought to its front;

the exhaust pipe must have a spark arresting grid;

the autogas carrier must have two carbon dioxide fire extinguishers.

13.5. Automobile tanks at the filling station are accepted and inspected.

13.6. When accepting road tanks, the following is checked: compliance of the tank and the amount of LPG filled with the shipping documents;

the presence of seals on the drain fittings;

no damage to the tank body and serviceability of shut-off and control valves and rubber-fabric sleeves;

the presence and level of LPG in the tank according to the control valves and level gauge.

13.7. The shipping documents indicate the name of the supplier, the date of shipment, the tank number, the mass (weight) of the gas filled into the tank.

13.8. The serviceability of the shut-off valves on the tank is checked by external inspection.

Valves should be opened smoothly, without causing hydraulic shocks.

13.10. Prior to the start of the LPG drain from the truck tank, the service personnel of the filling station:

secures the tank car with special wooden shoes or shoes made of non-sparking metal;

checks the serviceability and reliability of flexible hoses for draining LPG from a tank car;

grounds the truck tank.

13.11. Permission to drain LPG from a tank car is issued by a shift foreman and manages the persons involved in the discharge of LPG.

13.12. Draining of LPG from an automobile tank into tanks is allowed after checking the correct opening and closing of valves associated with the technological operation of draining LPG.

13.13. Draining operations must be carried out by personnel in standard work clothes, headgear and goggles.

13.14. Draining of LPG from truck tanks at gas filling stations is carried out by one of the following methods:

creating the necessary pressure drop between the tank truck and the tank by injecting the LPG vapor from the tank of another group into the tank car by the compressor;

creating a pressure drop between the truck tank and the tank by heating the LPG vapor in the evaporator;

pumping LPG pumps;

by gravity, when the tanks to be filled are located below the truck tank.

13.15. It is not allowed to create a pressure difference between the tank truck and the tank by releasing the gas vapor phase from the tank being filled into the atmosphere.

13.16. The pressure of the vapor phase injected by the compressor or created by the evaporator in the truck tank must not exceed the working pressure indicated on the truck tank.

When the pressure in the truck tank rises above the working one, the compressor or evaporator must be turned off.

13.17. The pressure drop between the truck tank and the tank is generally allowed to be 0.15-0.2 MPa.

13.18. When draining LPG from automobile tanks, the operation of the car engine is not allowed.

13.20. The presence of the driver during the discharge of LPG in the cab is not allowed.

13.22. After draining the LPG, the vapors should be removed from the truck tank to a pressure of 0.05 MPa.

Discharge of gas into the atmosphere is not allowed.

13.23. During the draining of the LPG, there should not be any service personnel nearby who are not involved in the draining operation.

13.24. It is not allowed to leave automobile tanks connected to the technological gas pipelines of gas filling stations during the period when LPG is not drained.

13.27. It is not allowed to leave an automobile tank, discharge gas pipelines, tanks, operating compressors, pumps and evaporators unattended during the LPG drain period.

13.28. During the period of draining, continuous monitoring of the pressure and level of gas in the tank truck and the receiving tank must be ensured.

The tanks are filled with LPG to no more than 85% of their geometric volume. In case of tank overflow, the excess gas must be drained into other tanks. The release of excess gas into the atmosphere is not allowed.

13.29. Drainage operations of LPG at filling stations during a thunderstorm, as well as during hot work in the production area, are not allowed.

13.30. During the LPG drain period, visual communication should be provided between the personnel servicing process gas pipelines and equipment (drain columns, compressors, pumps and evaporators).

13.31. At the end of the drain, the valves on the truck tank must be plugged with plugs and checked for leaks with a soapy emulsion.

13.32. Rubber-fabric sleeves (hoses) of automobile tanks must be attached to the drain tip with steel clamps (at least two clamps for each end of the hose). Wire clamps are not allowed.

It is not allowed to drain LPG if the sleeves (hoses) have cracks, fractures, potholes and other damage and consist of separate parts.

Sleeves with external metal spirals are considered unsuitable if the spirals are broken or partially missing.

13.33. To thaw frozen fittings and drain gas pipelines, heated sand, hot water, and steam should be used. Fire is not allowed.

13.34. In the event that a LPG truck tanker with a leak arrives at the gas filling station, it must be immediately unloaded in accordance with a special instruction that provides for additional security measures. In this case, a defective act is drawn up. It is not allowed to repair the tank car on the territory of the gas filling station.

13.35. It is not allowed to fill tanks with gas in cases provided for by the rules for the design and safe operation of pressure vessels, as well as in the following cases:

if cracks, bulges, omissions or sweating in welds are found in the main elements of the tank, leakage in flanged joints, gasket ruptures;

in case of malfunction of safety valves;

in case of malfunction of level measuring devices;

in case of malfunction or incomplete number of fasteners on manholes and hatches;

during the settlement of the foundations of tanks and supports of the supply gas pipelines.

13.36. In the room of the pump-compressor department, the technological unit or in the control unit are hung out:

piping scheme of technological equipment with drain, dispensing columns and reservoirs;

scheme for draining LPG from tankers;

production instruction containing technology and safety measures when draining LPG.

13.37. Warning posters with safety requirements when draining LPG from road tanks should be posted in the LPG drain area.

14. Safety requirements for refueling LPG vehicles

14.1. When filling cylinders at gas filling stations, the requirements of the rules for the design and safe operation of pressure vessels must be met.

14.2. Refueling of gas-balloon cars is carried out according to the production instructions.

The owner of the vehicle must monitor the technical serviceability of the cylinders of gas-balloon vehicles and the timing of their examination.

Cylinders are subject to inspection once every 2 years.

14.3. Before filling automobile cylinders, a travel (route) sheet with a mark on checking cylinders or a certificate with a coupon for the right to drive a gas-balloon car is checked.

14.4. The ticket states:

car name;

car number;

serial number of the cylinder;

cylinder capacity (l);

date of the subsequent technical examination of the cylinder; registration mark.

14.5. On the cylinder installed on the car, the following must be embossed and visible:

manufacturer's trademark;

cylinder number (factory);

the actual mass of an empty cylinder (kg) in accordance with the state standard or specifications for their manufacture;

date (month, year) of manufacture and year of the next survey;

working pressure (P), MPa;

test hydraulic pressure (P), MPa;

cylinder capacity (l) in accordance with the state standard or specifications for their manufacture; number of the standard for their manufacture.

14.6. Cylinders installed as consumable containers for LPG on vehicles must be firmly fixed and hermetically connected to gas pipelines.

14.7. It is not allowed to refuel LPG cylinders installed on vehicles that have:

the period of periodic examination has expired;

no installed inscriptions; valves and valves are not fixed;

the cylinder body is damaged (shells, nicks, corrosion , dents);

the cylinder fastening is loosened; connections are leaking.

14.8. The filling of LPG car cylinders is carried out with the car engine turned off.

It is allowed to turn on the engine after disconnecting the sleeve and installing the plug on the filling device.

Before the car enters the territory of the filling station, passengers disembark for refueling.

14.9. The degree of filling of the cylinder is determined by the maximum filling control valve or shut-off valve. Overfilling the balloon is not allowed.

When leaks are found in gas equipment car or overflow of the cylinder, the gas from it is drained into the tank.

14.10. When refueling LPG gas-balloon vehicles, the following should be done: if the engine of a car filled with gas fails during start-up, it must be turned off and the car must be rolled away from the filling station at a distance of at least 15 m;

do not transfer the car engine from one type of fuel to another on the territory of the filling station;

not to adjust and repair the gas equipment of gas-balloon vehicles on the territory of the gas filling station;

do not create a pressure on the filling column that exceeds the working pressure of the cylinder;

do not tighten connections on cylinders and communications;

do not leave gas stations and cars unattended;

do not release LPG from cylinders into the atmosphere when overfilled.

15. Safety requirements for the survey of tanks

15.1. Tanks before internal inspection, hydraulic testing, repair or dismantling must be freed from gas, unevaporated residues and carefully processed.

15.2. The release of tanks by discharging gas through the "candle" into the atmosphere is not allowed.

The burning of vapor phase residues should be carried out on a "candle" made of a steel pipe with a diameter of 20 mm, a height of 3 m, stably installed in a fireproof place at a distance of 10-12 m from the border of the tank installation with an inclination of 50-60 ° to the horizon.

Filling the reservoir with water should begin at the moment when the flame on the "candle" decreases to 20-30 cm, while the combustion of the vapor phase displaced by water should continue until the flame goes out.

The water supply stops when the tank is full.

15.3. Processing of tanks should be carried out after disconnecting them from the gas pipelines of the vapor and liquid phases using plugs by steaming them and purging with an inert gas or filling them with warm water.

15.4. The quality of the degassing should be checked by analyzing air samples taken from the bottom of the vessel. The concentration of the LPG sample after degassing should not exceed 20% of the lower concentration limit of flame propagation.

15.5. Depressurization of tanks without first reducing the pressure in them to atmospheric, as well as the use of air for degassing, are not allowed.

15.6. When working inside the tanks, the safety measures provided for production instruction and these Rules.

15.7. Work inside the tanks must be carried out by a team of at least three people under the supervision of a specialist.

Team members must be instructed in the safety of work.

Descent into the tank by more than one person is not allowed.

The person working in the tank must have a gas mask and a rescue belt with a rescue rope attached to it.

Outside the tank there should be at least two people who should hold the ends of the ropes in their hands, watch the worker in the tank, be ready to provide him with the necessary assistance and not allow unauthorized persons to the place of work.

The residence time in the tank should not exceed 15 minutes.

Every 30 minutes, the tank should be checked for gas contamination. If a gas concentration is detected above 20% of the lower concentration limit of flame propagation, work in the tank is stopped.

The tank is degassed again, followed by a check for gas content.

15.8. During work in the tank, the presence of persons not participating in the work near the tank is not allowed.

15.9. Sediments removed from the tanks must be kept moist and removed from the territory of the gas filling station for disposal in a specially designated place.

Sections of gas pipelines with pyrophoric deposits must be dismantled and stored in a safe area on the day they are opened.

15.10. Water after washing and testing the tanks should be discharged into the sewer through the settling tanks, which exclude the ingress of LPG into the sewer system, or be taken out to the places determined by the sanitary and epidemiological supervision.

15.11. The tanks must be put into operation after examination or repair on the basis of a written permission from the head of the gas filling station.

16. Gas hazardous work

16.1. Gas hazardous work at the gas filling station is carried out in accordance with the requirements of safety rules and these Rules.

16.2. Managers, specialists and workers who are trained in the technology of carrying out gas hazardous work, the rules for using the means are allowed to perform gas hazardous work. personal protection(gas masks and life belts), methods of providing first (pre-medical) aid, certified and tested knowledge in the field of industrial safety in the scope of these Rules.

Practical skills are developed at training grounds or at workplaces in compliance with security measures, according to programs agreed with the territorial bodies of the Gosgortekhnadzor of Russia.

Before being allowed to perform gas hazardous work (after checking knowledge), everyone undergoes an internship under the supervision of an experienced worker during the first ten work shifts.

Internship and admission to self-fulfillment gas hazardous work are formalized by the decision on the organization.

16.3. A work permit is issued for gas hazardous work (Appendix 19).

These works include:

launching gas into gas pipelines and other process equipment of gas filling stations during commissioning after completion of construction, reconstruction, expansion and overhaul, during re-preservation;

commissioning;

initial filling of tanks liquefied gas when putting them into operation, as well as after repair, cleaning, technical examination;

removal of blockages, installation and removal of plugs on existing gas pipelines, as well as disconnection of units, equipment and individual units from gas pipelines, taking into account in the journal (Appendix 17);

disconnection from the existing network and purging of gas pipelines, conservation and depreservation of gas pipelines and technological equipment of gas filling stations;

preparation for technical examination of LPG tanks;

repair of existing internal and external gas pipelines, equipment of pump and compressor departments, filling stations, LPG tanks;

dismantling of gas pipelines, tanks, technological equipment of gas filling stations;

current repairs associated with the dismantling of fittings, pumps and compressors at the work site;

excavation of soil in places of gas leakage until it is eliminated;

all types of repairs related to the performance of welding and hot work on the territory of the filling station;

conducting electrical tests in hazardous areas.

16.4. Periodically recurring gas hazardous work performed under similar conditions, as a rule, by a permanent staff of performers and being an integral part of the technological process, can be carried out without issuing a work permit according to production instructions approved for each type of work.

These works are:

maintenance of shut-off valves, safety valves and checking their settings;

maintenance of technological equipment of gas filling stations;

repair, inspection and ventilation of wells;

repair work without the use of welding and cutting in wells, trenches, recesses;

draining LPG from tankers into tanks, pumping out unevaporated residues of liquefied gases from tanks, refueling LPG vehicles, draining gas from overfilled cylinders;

replacement of instrumentation on process equipment.

These works must be recorded in the work log. The magazine is laced, sealed, the pages in it are numbered.

16.5. Works on launching gas into gas pipelines and process equipment of gas filling stations, repairs using welding and gas cutting, reactivation of gas filling stations, commissioning, initial filling of LPG tanks are carried out according to a work permit and a special plan approved by the head of the gas filling station.

16.6. The work plan indicates the strict sequence of their implementation, the arrangement of people, the need for mechanisms, devices and materials, measures are provided to ensure the safety of each gas-hazardous work, indicating the persons responsible for carrying out and preparing the work. Responsibility for the coordination of these works and the implementation of general management are assigned to the head of the gas filling station or the person replacing him.

16.7. Works to eliminate gas leaks and liquidate accidents are carried out without work permits until the direct threat to maintenance personnel, material values, buildings and structures is eliminated and are carried out according to plans for localization and liquidation of accidents.

16.8. The work permit is issued to the responsible person for the performance of gas hazardous work by the head of the gas filling station.

If the work is not completed, and the conditions for its implementation and nature have not changed, the work permit may be extended by the person who issued it.

16.9. To prepare for gas hazardous work, a set of preparatory measures is carried out, provided for in the work permit and the relevant instructions.

16.10. Before starting gas-hazardous work, the person responsible for its implementation is obliged to check the availability and serviceability of personal protective equipment, as well as to instruct the performers on the necessary safety measures when performing work, after which each person who has received the instruction signs the work permit.

16.11. Work permits are registered in the journal (Appendix 20).

The magazine is laced, sealed, the pages are numbered.

Work permits are kept for at least one year. Work permits issued for the primary discharge of gas, the performance of repair work using welding on the elements of technological gas pipelines and tanks in the ground, are permanently stored in the executive and technical documentation of the filling station.

The register of work permits is kept for 5 years.

16.12. Gas hazardous work at the gas filling station must be carried out by at least two workers. Work in tanks, station premises, as well as repairs using gas cutting and welding are carried out by a team of at least three workers, under the guidance of specialists.

Inspection, repair, ventilation of wells, discharge of unevaporated LPG residues from tanks and cylinders, maintenance of gas pipelines and process equipment, filling of LPG tanks during operation is allowed to be carried out by two workers. Management specified works allowed to entrust the most qualified worker.

Refueling of LPG vehicles can be carried out by one operator.

16.13. When carrying out gas hazardous work, the responsible person is obliged to ensure that workers can quickly withdraw from the hazardous area.

16.14. Gas-hazardous work at gas filling stations, carried out according to work permits, is carried out, as a rule, during daylight hours.

In exceptional cases, urgent gas-hazardous work is allowed at night, provided that additional measures are taken to ensure safe conduct works.

16.15. On the territory and in the premises of gas filling stations, it is not allowed to carry out welding and cutting on existing gas pipelines without shutting them down and purging with inert gas or steam, as well as dismantling flanged threaded connections, fittings and equipment in non-disconnected and non-purged sections of the gas pipeline.

When disconnecting gas pipelines and equipment, plugs must be installed at closed disconnected devices.

16.16. Pumps and compressors must be stopped for the duration of gas hazardous work in the pump and compressor room.

16.17. All gas pipelines and gas equipment, before being connected to existing gas pipelines, as well as after repair, must be subjected to external inspection and control pressure testing with air or inert gases.

Control pressure testing of internal gas pipelines and gas filling station equipment is carried out with a pressure of 0.01 MPa. The fall should not exceed 0.0006 MPa in one hour.

LPG tanks, gas pipelines are tested with a pressure of 0.3 MPa for one hour. No visible drop on the pressure gauge and leaks determined by soap emulsion or instruments are not allowed.

The results of the control pressure test are recorded in the work permits for the performance of gas hazardous work.

16.18. Gas pipelines and equipment must be purged with inert gas or liquefied gas vapors before starting the gas until all air is displaced.

The fittings intended for purging vessels must be located in such a way as to ensure purging with minimal cost purge reagent.

When organizing purging with liquefied gas vapors, measures must be developed for its safe conduct, excluding ignition of the gas-air mixture from a fire source.

The end of the purge is determined by analysis. The volume fraction of oxygen in the gas sample should not exceed 1%.

16.19. In the process of performing gas hazardous work, all orders on the procedure for their implementation must be given by the person responsible for the work.

16.20. Emergency work at the gas filling station is carried out by the personnel of the gas filling station. The participation of emergency services of gas distribution organizations in emergency work at gas filling stations is established by an agreed plan for the localization and elimination of accidents.

The actions of the gas filling station personnel for the localization and liquidation of accidents should be determined by the plan for localization and liquidation of accidents and the plan for the interaction of services of various departments.

16.21. In terms of localization and liquidation of accidents, the features of the technological process, the requirements of instructions for safe methods works include:

methods and means for extinguishing a fire; a list of persons (indicating telephone numbers and other means of communication and calling) who must be immediately notified of the accident; plan for the evacuation of vehicles from the danger zone; scenarios of possible accidents;

distribution of duties and the procedure for specific actions of the gas filling station personnel to prevent and eliminate accidents, the procedure for interaction between individuals involved in the liquidation of an accident;

ways to eliminate the accident and a list of necessary material and technical means;

conditions of interaction with fire protection services, police, ambulance, power supply, water supply organizations, etc.

The responsibility for drawing up the plan, the timeliness of making changes and additions to it, revision (at least once a year) lies with the head of the gas filling station.

16.22. The plan of interaction between the services of various departments for the localization and elimination of accidents at gas filling stations is agreed with interested organizations and approved in the prescribed manner.

16.23. Training sessions on localization and liquidation of accidents are held at the gas filling station at least once a quarter and are reflected in the journal.

17. Hot work

17.1. Repair work associated with the use of open fire, as well as burning out the remains of the vapor phase of LPG from tanks are allowed in exceptional cases, provided that the operating safety rules, these Rules and other regulatory and technical documents that establish safety requirements for welding and other hot work on hazardous production facilities approved in the prescribed manner.

17.2. Hot work must be carried out during daylight hours according to a special plan approved by the head of the gas filling station, agreed with the local fire brigade and the permit order.

17.3. The work permit for conducting hot work must be issued in advance for carrying out necessary training to work.

17.4. Hot work is allowed to be carried out only after the completion of the preparatory work and activities provided for by the plan and work permit.

Preparatory gas hazardous work (purging, shutting down equipment, installing plugs, degassing, etc.) is carried out in accordance with the requirements of these Rules.

17.5. Bleed gas from the gas pipeline section to be repaired only through purge candles.

When venting gas, all mechanisms must be outside security zone from the windward side.

17.6. The place of hot work should be provided with fire extinguishing equipment. A fire hose with a barrel from the internal fire water supply should be laid to the place of work.

17.7. To protect equipment, combustible structures from sparks of an electric arc, the workplaces of welders must be fenced with portable metal shields, equipment and combustible structures metal sheets or asbestos blankets.

17.8. When carrying out hot work at a gas filling station, it is not allowed to carry out operations for receiving LPG and refueling vehicles, while road signs must be installed prohibiting the entry of vehicles into the territory of the gas filling station.

17.9. The person responsible for carrying out hot work is obliged to instruct the performers on the measures fire safety during their implementation.

17.10. When performing work indoors, posts are set up outside in order to exclude unauthorized persons from accessing the place of work.

17.11. During the entire time of work in the premises, supply and exhaust ventilation must operate.

17.12. Before starting and during hot work in the premises, as well as in a 20-meter zone from the workplace on the territory, an analysis of the air environment for the content of LPG should be carried out at least every 10 minutes.

In the presence of LPG vapors in the air, regardless of their concentration, hot work must be suspended.

17.13. After completion of work, the place of work is inspected, combustible structures are watered, measures are taken to exclude the possibility of a fire.

17.14. Upon completion of hot work, cylinders with combustible gases and oxygen are removed from the work site to permanent storage sites.

Appendix 1

Sample

Technical passport AGZS

List of indicators,	Meaning of quantities	As of 2003
characterizing gas stations	(type, production power, speed, etc.)	if- quality	year of manufacture flattery or mounting
1	2	3	4
1. General information about gas stations
1.1. Year of commissioning
1.2. Design organization that completed the gas filling station project
1.3. Project characteristic: binding standard project(indicate the number of a typical project) or individual project
1.4. Information about the reconstruction project
1.4.1. Year of completion of the reconstruction project
1.4.2. What is the reconstruction (list)
1.4.3. Design organization that completed the reconstruction project
1.5. circuit diagram loading and unloading of gas at gas filling stations: pumping and compressor pumping and evaporating evaporating, etc.
1.6. Annual capacity of filling stations under the initial design, t
1.7. Annual productivity of gas filling stations under the reconstruction project, t
1.8. Annual actual productivity, t
1.9. The initial estimated cost of building a gas filling station, thousand rubles.
1.10. Book value, thousand rubles
1.11. Number of managers, specialists and employees, pers.
1.12. Number of workers in total, pers.
1.13. Shift work of gas stations (one or two shifts)
2. Supply and sale of gas
2.1. Gas supply plants
2.2. Method of gas delivery to gas filling stations
2.3. The amount of gas supplied from the filling station in t/day, t/year
3. Information about the general plan and engineering communications
3.1. Square land plot, m
3.1.1. Including production area, m
3.2. Water networks, m
3.3. Sewer networks, m
3.4. Heating networks, m: heating hot water supply
3.5. Electrical networks, m
3.6. Cable lines, impulse pipes for instrumentation and automation, m
3.7. Low-voltage networks, m
3.8. Gas pipelines, m
3.9. Highways and asphalt pavements, m
3.10. AGZS fencing, m
4. Drain and fill devices
4.1. Number of columns for draining from tankers, pcs.
4.2. Number of dispensers for refilling cylinders of gas-cylinder vehicles, pcs.
5. Characteristics of storage tanks for liquefied gases (type, capacity), pcs.
5.1. Total volume of storage base tanks, m
5.2. Gas reserve at gas stations, days
5.3. Tank installation method (above ground or underground)
5.4. Type of level measuring devices installed on the tanks
6. Pump and compressor department
6.1. Room volume (internal), m
6.2. Room area, m
6.3. Compressor (type, brand), pcs.
6.4. Pump (type, brand), pcs.
6.5. Evaporator (type, capacity), pcs.
7. Automation and blocking devices
7.1. Presence of blocking of ventilation devices with technological equipment
7.2. Presence of interlocking of gas contamination detectors with emergency ventilation installations
7.3. Availability of gas pollution alarms (type, brand) in premises with production facilities of category “A” (list premises), pcs.
8. Electrical equipment
8.1. Installed power of electric motors, kW
8.2. Electric motors of technological equipment and their installed capacity, pcs.
8.3. Electric motors of ventilation equipment and their installed capacity, pcs.
8.4. Other electric motors, pcs.
8.5. Shut-off valves with electric drive, pcs.
8.6. Type of transformer substation, its power, kW, voltage, V
8.7. Presence of installations electrochemical protection against corrosion (indicate the type of installation and the object of protection), pcs.
9. Heating and ventilation
9.1. Heat supply source
9.2. Type and parameters of the coolant
9.3. Availability of chemical water treatment (type)
9.4. Supply ventilation systems (system number and serviced premises)
9.5. Exhaust ventilation systems (system number, serviced installations and premises)
9.6. Total number of fans, pcs.
10. Water supply and sewerage
10.1. Water supply source (water pressure)
10.2. Volume and type of tank for fire-fighting water supply, m
10.3. Fire pumps (brand and type), pcs.
10.4. Availability of a sewage pumping station (type, capacity)
10.5. Place of discharge of sewage
11. Fire fighting equipment
11.1. List of primary fire extinguishing equipment in the pump and compressor room
11.2. List of primary fire extinguishing equipment in the filling compartment
11.3. List of primary fire extinguishing equipment at the storage base
11.4. List of primary fire-extinguishing equipment for discharge pumps from tank trucks and filling cylinders of gas-cylinder vehicles
11.5. List of primary fire extinguishing equipment for the territory of gas filling stations
11.6. Availability fire alarm(list of premises and type of alarm)
11.7. Availability of an automatic fire extinguishing system (list of premises, type, brand of system)
11.8. Availability of a stationary automatic water cooling system for storage tanks
12. Off-site communications and facilities
12.1. Access road, km
12.2. Power line, km
12.3. Water pipeline: diameter, mm, length, km
12.4. Sewerage: diameter, mm, length, km
13.4. Steam pressure, MPa (kgf/cm), t/h
13.5. Water for domestic and drinking and industrial needs (including irrigation of the territory), m/day
13.6. Water for fire extinguishing (internal and external), l/s
13.7. Water for replenishment of the fire reserve, m/day
13.8. Household sewerage, m/day
13.9. Industrial sewerage, m/day
13.10. Compressed air (specify pressure), m/min

Appendix. Scheme of the location of the gas filling station and its main structures (general plan) on a scale of 1:1000 or 1:500 with an explication.

Note. On the gas filling station diagram, the structures built according to the original design should be indicated.

Appendix 2

Sample

Magazine

acceptance-delivery of shifts

the date

Change, h

(from to)

Duty

electrician

Surname,

name,

Equipment condition

Signature

on duty

Replacement

chani

(D.E.);

Locksmith on duty (D.S.)

shift master

patronymic of the shift master

discovered

Women's measures faulty

details on objects

Adopted to eliminate the detected

Women's faults

information on objects

on the delivery or acceptance of a shift

senior master

Annex 3

AGREED with the Ministry of Chemical Industry December 21, 1979

AGREED with the Ministry of Oil Refining and Petrochemical Industry December 27, 1979

APPROVED by the Ministry of Gas Industry December 28, 1979

The instruction establishes the main provisions and procedure for loading, unloading and transporting liquefied hydrocarbon gases in special railway tank cars, and also defines the requirements for their technical maintenance and certification, and contains a description of the design of the tank.

It is intended for engineering and technical workers and specialists of oil refineries and gas processing plants, petrochemical and chemical plants, synthetic rubber plants, gas dispensing stations and cluster depots of liquefied gas, commodity transport points and offices of liquefied gas, gas facilities, railway transport, as well as for specialists of organizations designing structures and devices for loading and unloading liquefied hydrocarbon gases.

With the entry into force of this instruction, the "Instruction for loading, unloading and transporting liquefied hydrocarbon gases (propane, butane, propylene, butylene and their mixtures) in railway tanks", approved by the former. Gazprom of the USSR November 23, 1964.

I. GENERAL PROVISIONS

§ 1. This Instruction was developed by the Tsentrgaz Production Association of the Ministry of the Gas Industry in accordance with the "Rules for the Design and Safe Operation of Pressure Vessels" *, "Safety Rules in the Gas Industry" **, "Charter of the Railways of the USSR", " Rules for the technical operation of railways USSR", "Rules for the Transportation of Goods" of the Ministry of Railways, "Safety Rules in the Oil and Gas Industry" and "Safety Rules for the Operation of Gas Processing Plants".
_______________
* The "Rules for the Design and Safe Operation of Pressure Vessels" are in force, approved by the Decree of the Gosgortekhnadzor of Russia dated June 11, 2003 N 91, hereinafter in the text.
** The "Safety Rules in the Gas Industry" (PB 12-368-00) are in force, approved by the Decree of the Gosgortekhnadzor of Russia dated May 26, 2000 N 27, hereinafter in the text. - Note "CODE"

§ 2. The Instruction establishes the main provisions and procedures for loading, unloading and transporting liquefied hydrocarbon gases in special railway tank cars*, and also defines the requirements for their maintenance and technical certification, and contains a description of the design of the tank.
________________
* Further in the text, instead of "liquefied hydrocarbon gases", "liquefied gases" are used, and instead of the term "special railway tank wagon", "cistern" is used.

§ 3. The instruction is obligatory for all enterprises and organizations, regardless of their departmental affiliation, that carry out loading, unloading and transportation of liquefied gases in tanks along the access roads of enterprises and the railway network, which are the property of the Tsentrgaz production association.

§ 4. At each enterprise that performs loading, unloading and dispatch of tanks, local official and operational instructions must be developed, in accordance with the requirements of this Instruction, to ensure the safety of these works.

§ 5. Only hydrocarbon gases and liquids and their mixtures may be transported in tanks: propane, n-butane, isobutane, propane-butane, propylene, unstable gas gasoline, isopentane, n-pentane, butylene-butadiene, isobutane-isobutylene, isobutylene , butadiene, butane-butylene, isoprene, n-butylene, isoamylene, reflux, pseudobutylene, piperylene, pyrolysis fraction of pentanes, wide fraction of hydrocarbons.

II. DESCRIPTION OF THE TANK DESIGN

§ 6. For the transportation of liquefied gases in the USSR, tanks with top filling and draining are used (Fig. 1).

Fig.1. Railway tank car for transportation of liquefied hydrocarbon gases

Fig.1. Railway tank car for transportation of liquefied hydrocarbon gases.

1 - four-axle platform, 2 - vessel with spherical bottoms,
3 - safety cap, 4 - platform with handrails, 5 - clamps,
6 - ladders, 7 - pressure gauge assembly, 8 - mounting feet

The tank is a welded cylindrical vessel with spherical bottoms 2, located on a four-axle platform 1. In the upper part of the tank along the vertical axis of symmetry there is a manhole with an inner diameter of 450 mm. The hatch cover is made in the form of a flat flange, on which there are drain-filling and safety fittings and fittings for controlling drain-loading operations.

The hatch, together with the fittings, is closed with a safety cap 3 with a diameter of 685 mm, a height of 426 mm with a gas outlet in case of a safety valve actuation.

To service the fittings during draining and filling and to check its condition, a platform with handrails 4 and ladders 6 on both sides of the tank is fixed on the tank. The tank vessel is attached to the frame of the railway platform with tie-down clamps 5 and to the center beam with paws 8. The platform is equipped with an automatic coupler, a parking brake and an automatic brake with a lever transmission.

§ 7. A spring-loaded safety valve 7 (Fig. 2) is mounted in the center of the manhole cover, designed to discharge liquefied gas vapors into the atmosphere at a pressure in the tank exceeding the working one by more than 15%.

Rice. 2. Arrangement of fittings on the manhole cover of a railway tank

Rice. 2. Arrangement of fittings on the manhole cover of a railway tank.

1 and 10 - valves for emptying control, 2 and 3 - valves for filling level control,
4 and 9 - angle valves for filling and draining liquefied gas, 5 - pocket for a thermometer,
6 - an angle valve for the selection and supply of the vapor phase of liquefied gas,
7 - safety valve, 8 - drain valve

§ 8. On both sides of the safety valve along the longitudinal axis of the tank, two corner drain-fill valves 4 and 9 (see Fig. 2) are installed, which are connected to the drain-fill pipes through high-speed valves 1 (Fig. 3).

Fig.3. Scheme of the location of the filling and equalizing valves on the manhole cover of the railway tank

Fig.3. Scheme of the location of the filling and equalizing valves on the manhole cover of the railway tank.

1 - high-speed valves, 2 and 4 - drain and fill angle valves, 3 - angle equalizing valve,
5 - manhole cover, 6 - manhole pipe, 7 - pipe for sampling and supplying liquefied gas vapors,
8 - drain and fill pipes, 9 - tank vessel tray, 10 - drainage pipe, 11 - thermometer pocket

An angle equalizing valve 6 (see Fig. 2) connected through a high-speed valve to the vapor space of the tank vessel is used to take liquefied gas vapor from the tank and supply it to it. Drain and filling and equalizing valves are equipped with plugs having a safety hole in the thread, through which, in the event of a valve malfunction, when the plug is unscrewed, liquefied gas escapes; the side fittings of the valves have a left-hand thread.

§ 9. To control the level of filling the tank with liquefied gases, valves 2 and 3 are used (see Fig. 2). The valve tube 2, the flywheel of which is colored green, ends at the top filling level of the tank, and the valve tube 3, the flywheel of which is painted red, ends at the maximum filling level, i.e. 30 mm higher (Fig. 4).

Rice. Fig. 4. Layout of valves to control the level of filling and draining of liquefied gas in a railway tank

Rice. 4. Layout of valves for filling level control
and discharge of liquefied gas in a railway tank car.

1 - valve for filling limit level with a red handwheel,
2 - top filling level control valve with a green handwheel,
3 - gas valve for emptying the tube of the drain control valve,
4 - drain control valve, 5 - drain valve, 6 - manhole cover,
7 - hatch pipe, 8 - limit level for filling liquefied gas,
9 - the lower level of the drain, 10 - the bottom of the tank vessel

Control over the drain of the tank is carried out by valve 10 (see Fig. 2), the tube of which ends at the level of the lower plane of the drain-fill pipes. Valve 1 is designed to balance the liquid column in the valve tube 10 with the liquid level in the tank tank (see Fig. 2).

Valve 8 (see Fig. 2) is used to remove water and heavy non-evaporating residues of liquefied gases from the tank vessel. The end of the tube of this valve ends at a distance of 5 mm from the bottom of the sump of the tank vessel.

The valves for filling and draining level control and the drain valve are equipped with plugs.

§ 10. To automatically shut off the filling and filling and equalizing lines of the tank in the event of a rupture of the connecting hoses, high-speed valves 1 are installed on the filling and equalizing pipes (see Fig. 3).

§ 11. A thermometer for measuring the temperature of liquefied gases is placed in pocket 5 (see Fig. 2) 2796 mm long, the upper end of which is plugged with a stopper.

In the upper part of the tank, along the longitudinal axis, there is a manometer holder assembly 7 (see Fig. 1) at a distance of 1170 mm from the vertical axis of symmetry. The pressure gauge holder consists of a fitting welded into the vessel body, a nipple, a needle valve, a coupling and a plug. The manometer holder is closed with a cap.

§ 12. Technical characteristics of the railway tank car.


Length along the axes of coupling of automatic couplers, mm
Length on end beams, mm
Distance between pins of bogies, mm
Tank vessel length, mm
Frame width (outer) on pivot beams, mm
Total height of the railway tank car (from the rail head), mm
Vessel inner diameter, mm
Vessel shell wall thickness, mm
Wall thickness of vessel bottoms, mm
Cap diameter, mm
Cap height, mm
Total vessel volume, m
Useful volume of the vessel (top filling level control valve with green handwheel), m
Distance from the lower generatrix of the inner surface of the vessel to the tube of the valve for controlling the level of the upper filling (with a green handwheel), mm
Tank car container, t
Working pressure in the tank, kgf/cm
Pressure during hydraulic testing, kgf/cm

Note. In tanks with a capacity of 54 m, manufactured before 1980, the top filling level (valve with a green handwheel) corresponds to a filling volume of 43.87 m; in tanks with a capacity of 51 m3 - 41.66 m3.

III. REGISTRATION AND TECHNICAL CERTIFICATION; REQUIREMENTS FOR TANK PAINTING

1. Registration and technical examination

§ 13. The tank vessel must be manufactured in full compliance with, and the chassis - with the "Rules for the technical operation of railways of the USSR" and the technical conditions of the Ministry of Railways. For each tank, the manufacturer issues two passports: one for the vessel, the other for the running gear. Both passports must be kept as strict records.

§ 14. Prior to commissioning, the tank must be registered with the local Gosgortekhnadzor in accordance with sections 6-2 and 9-2.

§ 15. The Gosgortekhnadzor of the USSR makes notes on the registration of a tank vessel in the passport (assigns a registration number and stamps it) and returns it with all the laced documents to the owner of the tank.

The owner of the tank puts the registration number on the vessel and submits it to the Gosgortekhnadzor inspector to obtain permission to put it into operation.

The permission to put the tank into operation, indicating the terms of the next internal inspection and hydraulic test, is recorded by the Gosgortekhnadzor inspector in the vessel's passport.

When transferring a tank to another owner, the vessel is subject to registration again before it is put into operation at a new location.

§ 16. Examination of a tank vessel must be carried out by a boiler supervision inspector at tank car manufacturers, rail car repair plants of the Ministry of Railways and at repair and test stations of the Tsentrgaz association.

The tank vessel must be subjected to an internal inspection and hydraulic test after each overhaul, but at least every six years, and also in the event that the tank has not been in operation for more than one year or repairs have been carried out using welding of individual parts of the vessel operating under pressure.

The results of the survey are recorded by the boiler supervision inspector in the passport of the tank vessel.

§ 17. The tank car must be subjected to factory repair at the railcar repair plants of the Ministry of Railways after 15 years and depot repair of running gear in the depot of the road after 2 years.

§ 18. The following passport data are stamped on the tank vessel along the circumference of the hatch flange by the manufacturer:

a) the name of the tank manufacturer;

b) serial number of the tank;

c) year of manufacture and date of examination;

d) capacity in m;

e) the mass of the tank in an empty state without running gear in tons;

f) the value of the working and test overpressures in atm;

g) mark of the quality control department of the manufacturer.

§ 19. A metal plate with passport data is attached to the tank frame (pivot beam channel):

a) the name of the manufacturer;

b) serial number;

c) year of manufacture;

d) the mass of the tank with the undercarriage in an empty state, in tons;

e) registration number of the tanker (issued by the owner of the tanker after its registration with the local bodies of Gosgortekhnadzor);

e) date of the next survey.

§ 20. Drain and fill valves are subject to removal, inspection and hydraulic testing with excess pressure of 25 atm by the owner of the tank at least once a year.

Inspection and testing of the safety valve and its spring is carried out at least once a year. The safety valve must open fully at an overpressure of 23 atm. High-speed valves and the quality of the connection of the drain-fill pipes are checked at least once every 6 years.

After the angle and control valves and the safety valve are installed on the roof of the hatch, an act is drawn up based on the results of their testing. The act is attached to the passport of the tank vessel.

A metal plate with the date (month and year) of the preventive maintenance carried out is attached to the shut-off and safety valves.

2. Painting requirements

§ 21. The painting of the tank and the application of distinctive stripes and inscriptions are carried out by the manufacturer of the tanks, and during operation - by the enterprises that own the tanks and the rail car repair plants of the Ministry of Railways in accordance with the "Rules for the Design and Safe Operation of Pressure Vessels", "Rules for the Transportation of Goods" MPS and this Instruction.

§ 22. Coloring of the tank:

a) the outer surface of the tank vessel is painted light gray;

b) the bottom of the tank vessel along its entire length to a height of 300 mm is painted black;

c) the frame of the tank is painted green;

d) a distinctive red stripe 300 mm wide is applied along the tank vessel on both sides above the center line for the entire length of the cylindrical part;

e) a distinctive green circle is applied on the bottoms at a distance of 300 mm from the edge.

§ 23. On the cylindrical part of the tank vessel, stencils are applied on both sides:

- above the distinctive strip in its middle part there is a red inscription: "Propane - liquefied gas - flammable";

- on the left above the distinctive strip, the number of the tank car, the color of the inscription is black;

- on the left, under the distinctive stripe, there is a black inscription: "Pressure 20 ati", "Hyd. use 25 ati";

- on the right above the distinctive stripe there is a black inscription: "Capacity 54. m", "Fill. 45.2 m";


To the right, under the distinctive stripe, there is an inscription in black: "Reg. N

"Term next. IN GI
	(month year)

Under the distinctive stripe in the middle part there is a red inscription: "Do not let go down the hill".

§ 24. On both bottoms of the tank vessel, in a green circle, starting from the upper part of the bottom, stencils with white inscriptions are applied:

a) "Do not go down the hill";

b) "flammable";


c) "Urgent return of Art.
	(name of station and home road)

d) “Property of PO Tsentrgaz”.

In addition, car repair plants and depots of the road apply stencils on the production of factory and depot repairs.

§ 25. An inscription is made on the cover of the manhole cover: "Ground the hoses." The color of the inscription is red.

§ 26. Inscriptions and signs related directly to the undercarriage of the tank are applied in accordance with the requirements of the current rules and instructions of the Ministry of Railways by the manufacturer of tanks, car repair plants and road depots.

§ 27. Signs and inscriptions must be applied only by means of stencils. Gaps in letters and numbers remaining from stencils are painted over by hand. The intervals between letters and numbers are taken equal to the width of the letters. Dashes, periods and commas should be taken equal to the width of the bar for the given font.

§ 28. Valves of a tank vessel must have a special color and inscriptions indicating their purpose:

a) drain-fill and equalizing valves are painted brown;

b) inscriptions are applied to the caps or letters are embossed: for liquid valves - the inscription "Liquid" or the letter "Zh", for a gas valve - the inscription "Gas" or the letter "G";

c) the handwheel of the valve for controlling the level of the top filling of the tank vessel is painted green;

d) the handwheel of the valve for controlling the filling level of the tank vessel is painted red;

e) flywheels for drain control valves are painted brown;

f) the drain valve is painted light gray.

§ 29. If the signs, inscriptions or the surface of the tank wagon become dirty, the owner of the tank is obliged to restore the legibility of the signs and inscriptions.

1. General requirements

§ 30. Liquefied gas offices and commodity transport points of the Centrgaz association are required to maintain tanks in accordance with the requirements of the Rules for the Design and Safe Operation of Pressure Vessels, the Rules for the Transportation of Liquid Cargoes in Bulk in Tank Wagons and Bunker Gondola Wagons of the Ministry of Railways , "Rules for the technical operation of railways of the USSR" and this Instruction, ensuring the safety of service, working condition and the reliability of their work.

§ 31. Persons who supervise tanks in liquefied gas offices or goods and transport points of the Centrgaz association and are responsible for their good condition and safe operation must be appointed by order from among the engineering and technical workers who have passed the test of knowledge of the "Rules for Arrangement and Safe Operation of Pressure Vessels" , "Rules for the Transportation of Liquid Cargoes in Bulk in Tank Wagons and Bunker Gondola Wagons" of the Ministry of Railways and this Instruction.

§ 32. Maintenance of tanks may be entrusted to persons who have reached the age of 18, who have passed industrial training, attestation in the qualification commission and a medical examination.

Workers, in addition to training and certification, must undergo safety briefing when they are hired and when they transfer to another job directly at the workplace.

Before being allowed to work, each worker must be issued, against receipt, instructions corresponding to his profession for the safe maintenance of tanks. In addition, instructions should be posted at every workplace.

Conducting briefings is made out by records in the cards of the established form.

§ 33. Periodic testing of the knowledge of workers is carried out by a qualification commission appointed by order for the enterprise at least every 12 months.

The frequency of checking the knowledge of engineering and technical workers is once every three years.

The results of the check must be documented in a protocol on the basis of which certificates are issued.

Participation in the work of the qualification commission of the inspector for boiler supervision is not obligatory.

§ 34. Persons entering positions related to shunting work, in addition, must know:

a) "Rules for the technical operation of railways of the USSR";

b) "Instructions on Signaling on Railways of the USSR";

c) "Instructions on traffic and shunting work on the railways of the USSR";

d) "Charter on the discipline of railway transport workers".

Subsequently, they periodically check their knowledge of these documents.

§ 35. Officials in enterprises guilty of violating this Instruction are personally liable, regardless of whether or not this violation led to an accident or an accident. They are also responsible for the violation of the Instructions committed by their subordinates.

2. Requirements for the safe operation of tanks

§ 36. Repair of the tank vessel, its elements and internal inspection may be carried out only after the vessel has been degassed.

The fittings can be removed for repair and testing only if there is no excess pressure in the tank vessel. After removing the fittings for repair, the holes in the hatch cover of the tank vessel must be closed with plugs on the thread or plugs on the flanges.

§ 37. The tank car sent for repair to the depot of the road and to the wagon repair plants of the Ministry of Railways must be degassed. A certificate of degassing of the tank vessel is attached to the shipping documents.

§ 38. On the way, the repair of running gear, brake and harness devices of an empty and loaded tank car must be carried out by employees of the railcar facilities of the Ministry of Railways with extreme caution.

When repairing a faulty tank, it is prohibited:

- repair the vessel in the loaded state, as well as in the empty state before degassing;

- strike the vessel;

- use a tool that gives sparks and be with an open fire (torch, brazier, kerosene and candle lanterns, etc.) near the tank:

- carry out welding work under the tank.

If it is necessary to fix the carts with the use of fire, welding and impacts, the carts must roll out from under the tank and move away from it at a distance of no closer than 100 m.

§ 39. It is forbidden to keep the tank, when it is not filled and unloaded, attached to the communications. In the event of a long break when draining or filling in liquefied gas, the hoses from the tank must be disconnected.

§ 40. Tightening and unscrewing threaded and flanged connections of the tank and communications, hose clamps under excessive pressure is prohibited. Do not use an impact tool when screwing in and unscrewing nuts.

§ 41. Smoking at a distance of less than 100 m from the tank is strictly prohibited. It is not allowed to carry out any extraneous work at the tank.

§ 42. All work on minor repairs to the elements of a non-degassed tank is carried out with a non-sparking tool, and the working part of tools and devices made of ferrous metal must be liberally lubricated with grease, grease or other lubricant. The use of electric drills and other electrical tools that produce sparks, as well as the production of welding work, is prohibited.

§ 43. Work inside the tank vessel is gas hazardous and must be carried out in accordance with the requirements of Chapter 9 of the "Safety Rules in the Gas Industry", production instructions, safety instructions and approved technological regulations. These works must be carried out under the direct supervision of an engineering and technical worker. During the production of repair work inside the tank, all instructions on the procedure for their implementation must be given by the person responsible for the work. Others present at work officials and supervisors should give instructions to workers through the person responsible for carrying out the work.

Lighting inside the tank vessel is allowed only with light bulbs for a voltage of not more than 12 V in serviceable explosion-proof fittings.

Before starting work inside the tank vessel, it is necessary to analyze the environment for the absence of a dangerous concentration of hydrocarbons and for the oxygen content. The oxygen content should be in the range of 19-20% by volume.

§ 44. When not in use, the valves of the tank must be closed and plugged. If necessary, the stuffing box packing of the filled tank valves can be replaced with the valve fully closed and the plugs removed.

§ 45. During loading and unloading of liquefied gas, it is prohibited to carry out any hot work at a distance closer than 100 m from the tank.

On the side of the railway track, on access roads and roads in the loading or unloading area, signals of 400x500 mm in size with an inscription should be placed. "Stop, passage is prohibited, the tank is being filled (or drained"). In addition, access railway tracks must be fenced off with signals in accordance with the "Instruction on Signaling" of the Ministry of Railways.

§ 46. Drainage of water and non-evaporating residues and periodic control of filling or draining the tank may only be carried out in the presence of a second person. In this case, you should be on the windward side and have necessary funds personal protection.

§ 47. In case of accidents that can lead to a significant leakage of gas from the tank or connecting communications, it is necessary to immediately extinguish all sources of open fire, remove people from the zone of possible gassing, set up posts prohibiting the admission of people and vehicles to the gassed zone, create where it is possibly a steam curtain, take measures to eliminate the leak. The accident must be reported to the administration of the supplier (manufacturer) * and the railway.
________________
* Plant-supplier (manufacturer) - an enterprise that produces liquefied hydrocarbon gases and fills them into tanks.

In the event of a fire near the tank, you must immediately call the fire brigade, take measures to extinguish the fire and take the tank to a safe place. If the tank cannot be taken out, it must be watered. When liquefied gas catches fire, various fire extinguishing agents are used:

a) fire extinguishers - foam, carbon dioxide;

b) water in the form of compact and sprayed jets, water vapor, sand, asbestos cloth and other available fire extinguishing agents.

All enterprises should develop a plan for the elimination of possible accidents.

§ 48. On electrified sections of railways, all types of work on top of the tank are prohibited until the voltage is removed from the contact network.

§ 49. The dangerous properties of liquefied gases require special precautions. When working with liquefied gases, it is necessary to comply with the safety requirements set forth in the State Standards and specifications.

Leaks of liquefied gas must be immediately eliminated, since a person inhaling air containing 10% liquefied gas vapor causes dizziness, with a higher vapor content, oxygen deficiency occurs.

When the liquid phase gets on the human skin, due to its instantaneous evaporation, intense heat absorption occurs, which leads to frostbite.

§ 50. If liquefied gas comes into contact with the skin, eyes, etc. it is necessary to quickly wash the affected area with a plentiful stream of cold water, lubricate the affected area (until blisters form) with burn ointment. If blisters are present, carefully apply a sterile dressing and seek immediate medical attention.

If liquid gets on clothing, the latter must be removed immediately, since liquefied gas is instantly absorbed into it and penetrates to the body, freezing it. It must be remembered that delay is very dangerous, since bubbles form under the clothes on the body, which can burst, and if more than the skin is damaged by burns, death is possible.

V. LOADING, TRANSPORT AND DISCHARGING OF LIQUEFIED HYDROCARBON GASES

1. General Provisions

§ 51. Loading and unloading liquefied gases are gas hazardous work and must be carried out in accordance with the requirements of Chapter 9 of the "Safety Rules in the Gas Industry", "Safety Rules in the Oil and Gas Industry", "Safety Rules for the Operation of Gas Processing Plants", production instructions and instructions for safety engineering.

Filling and draining of liquefied gases is allowed only on a special overpass made of fireproof materials, accepted for operation in accordance with the established procedure with the participation of representatives of local bodies of the State Gortekhnadzor. Overpasses must be equipped with explosion-proof lighting, which ensures the performance of loading and unloading operations around the clock.

§ 52. Loading and unloading racks must have track development corresponding to the volume of loading and unloading, supplier plants (manufacturers) must have receiving and departure tracks, ways for laying tanks on the basis of daily shipment and an overpass for inspecting and preparing tanks for loading.

The pipelines of loading and unloading racks must be equipped with pressure gauges; there should be no locking devices between the installation site of the pressure gauges and the angle valves of the tank.

For loading and unloading devices, rubber-fabric hoses of class B (I) should be used in accordance with GOST 18698-73.

Devices for connecting sleeves to angle valves must ensure the safety of the threads of the fittings of the drain and fill valves (Appendix 8).

Pipelines and rubber-fabric sleeves must be grounded.

§ 53. Before the start of loading and unloading operations, tanks should be fixed rail track special shoes and grounded.

Loading and unloading operations during a thunderstorm are prohibited.

§ 54. Unlike most liquids, the volume of which changes slightly with temperature, the liquid phase of liquefied gases changes quite sharply in volume; For example, the table shows data for four products.

Volume increase 1 mliquid phase in a closed volume,
with increasing temperature, m


Temperature, °C	Propane	Propylene	Isobutane	N-butane

When checking the presence of liquefied gas in the tank before draining, the top filling level control valve (green handwheel) may not be able to release the liquid phase, since the volume of the liquid has decreased with a decrease in its temperature relative to the filling temperature.

2. Filling

§ 55. In accordance with the "Rules for the Technical Operation of the Railways of the USSR", employees of the Ministry of Railways must carry out a technical inspection of tanks before they are delivered to the access roads of the supplier (manufacturer), and, if necessary, repair the tanks. The procedure and scope of technical inspection is established by the Ministry of Railways.

§ 56. Before being filled with liquefied gas, tanks must be carefully inspected by employees of the liquefied gas office or the goods and transport point of the Centrgaz association.

During a preliminary external inspection of tanks, carried out on the access roads of the supplier (manufacturer), the following should be checked: the timing of factory and depot repairs of running gear, internal inspection and hydraulic testing of tank vessels, preventive repairs of safety and stop valves, condition of painting and stencils, as well as washed away chalk inscriptions. In addition, it is necessary to check the absence of damage to the tank vessel (dents, cracks, etc.) and, in case of damage, demand from the railway a technical act in the form VU-25 or VU-25a (Appendices 1, 2).

Based on the inspection, an application is submitted to the transport department of the supplier (manufacturer) for the supply of tanks, recognized as fit for filling, under the overpass. About tanks poured for the first time or after repair, a note is made in the application.

Checking the serviceability and tightness of safety, discharge-loading and control valves should be carried out by employees of the office of liquefied gas or the commodity-transport point of the association "Tsentrgaz" at the rack for inspection and preparation of tanks for loading or at the loading rack, owned by the supplier (manufacturer).

Note: The positions of responsible persons involved in the inspection and acceptance of tanks are established in accordance with the existing management structure and staffing of liquefied gas offices or commodity transport points and are specified by production instructions.

When shipping up to 3 thousand tons of liquefied gases per month, all operations for inspection before filling and sending tanks to the consumer are performed by employees of the supplier (manufacturer) by proxy of the Tsentrgaz association, and over 3 thousand tons - by employees of the office of liquefied gas or commodity transport point of association "Tsentrgaz".

§ 57. It is prohibited to fill tanks if:

a) the period of factory and depot repairs of running gears, preventive repairs of fittings, internal inspection and hydraulic testing of tank vessels has expired;

b) safety, shut-off and control valves are missing or faulty;

c) there are no established stamps, inscriptions and stencils are unclear;

d) the cylindrical part of the vessel or the bottom is damaged (cracks, dents, noticeable changes in shape, etc.);

e) painting is required;

f) tank containers are filled with non-hydrocarbon liquefied gases and liquids;

g) residual excess vapor pressure of the product is less than 0.5 kgf / cm (for liquefied gases, the vapor pressure of which is winter time may be lower than 0.5 kgf/cm3, residual overpressure is established by local production instructions), except for tanks filled for the first time or after repair.

§ 58. Before filling, tanks must be inspected by representatives of the liquefied gas office or the goods and transport point of the Tsentrgaz association and the supplier (manufacturer).

At the same time, when opening the filling level control valve (the handwheel is colored red), it is necessary to check the presence of residual pressure in the tank, and when opening the drain valve - the presence of water or non-evaporating gas residues in the tank. All water or non-evaporating residues in the vessel must be removed by the workers of the supplier (manufacturer) before filling the tank with the product. Tankers poured for the first time or after repair must be purged by employees of the supplier (manufacturer) with an inert gas.

§ 59. The results of the inspection of tanks deemed fit for filling must be entered by the employees of the office or the goods and transport point of the association "Tsentrgaz" in a special tank inspection log before filling, which should contain the following columns:

- number in order;

- tank car number;

- date of inspection of the tank;

- registration number of the tank vessel;

- the result of an external inspection of the tank;

- the result of an external inspection of the tank fittings;

- the period of preventive maintenance of the tank fittings;

- compliance of the gas available in the tank with its purpose;

- presence of residual pressure;

- the term of the depot repair;

- the period of the factory repair;

- the period of internal inspection and hydraulic testing;

- conclusion on the possibility of filling the checked tank;

- signature of the responsible person of the office or the goods and transport point of the Tsentrgaz association, which inspected the tank;

- signature of the responsible person of the supplier (manufacturer) who accepted the tank.

§ 60. Before pouring liquefied gases into tanks, the supplier (manufacturer) is obliged to remove the (drainage) water released from the product from the storage tank.

Finished products must be accepted technical control the supplier (manufacturer) responsible for the quality of the product poured into the tanks.

§ 61. After accepting the tanks placed under the overpass, the employees of the supplier (manufacturer) must remove the plugs from the corner valves 4, 9 and 6 (see Fig. 2) and connect the drain and fill valves (4 and 9) to the pipelines of the liquid phase, and the valve 6 - with pipeline vapor phase overpass.

Having completed the connection operations, it is necessary to open valves 4 and 9 and start filling tanks, then slowly open valve 6 to equalize the pressure in the tank vessel and the container from which filling is made, and continue filling.

§ 62. If a product leak is detected while filling the tank, the filling must be stopped, the product is drained, the pressure is relieved, and the employees of the liquefied gas office or the goods and transport point of the Centrgaz association must take measures to identify and eliminate the malfunction of the tank.

§ 63. During the filling process, it is necessary to constantly monitor the gas level in the tank vessel, opening from time to time the top filling level control valve with a green handwheel 2 (see Fig. 2). Fill until liquid comes out of the valve.

§ 64. The loading time of the entire batch of tank cars of one dispatch at the supplier (manufacturer) plant from the moment they are accepted from the liquefied gas office or the goods and transport center of the Tsentrgaz association should not exceed 6 hours.

§ 65. After the filling of the tank from the supplier (manufacturer) is received by an employee of the office of liquefied gas or the goods and transport point of the association "Tsentrgaz".

When accepting filled tanks, it is necessary to check the correctness of their filling.

When properly filled, the filling level control valve with a red handwheel 3 (see Fig. 2) should release gas (vapor phase of liquefied gas), and liquid from the top filling level control valve with a green handwheel 2.

The appearance of liquid from valve 3 indicates an overflow of tanks, and the absence of liquid exit from valve 2 indicates underfilling of tanks.

§ 66. Part of the product must be drained from overfilled tanks, while controlling the filling level, valve 3 should be kept open for about 30 s in order to avoid obtaining distorted readings. In this case, the liquid lingering in the tube from the previous measurement will be completely removed.

In case of underfilling of the tank, the supplier (manufacturer) is obliged to fill the tank to the top filling level (valve 2).

§ 67. The maximum degree of filling of tanks with liquefied gases shall not exceed 85% of the volume of the tank vessel.

§ 68. After checking the correct filling of the tank vessel, the employees of the supplier (manufacturer) must close the drain-fill, equalizing and control valves and disconnect the rubber-fabric sleeves, and the employees of the office of liquefied gas or the goods and transport point of the association "Tsentrgaz" are obliged:

a) check the shut-off and safety valves for tightness;

b) turn off the drain-fill and equalizing valves and seal them;

c) screw the plugs onto the fittings of the control and drain valves;

d) close the armature with a cap and, after fixing it, seal it.

The sealing of the filling and filling and equalizing valves and the cap of the tank is carried out in accordance with Section 5 of the "Rules for the Transportation of Goods" of the Ministry of Railways.

§ 69. Suppliers (manufacturers) are required to keep a filling log, which should contain the following columns:

a) the date of filling;

b) tank car number;

c) name of the tank manufacturer;

d) registration number of the tank vessel;

e) tank capacity, m;

e) mass of gas, t;

g) the date of the next internal inspection and hydraulic test of the tank vessel;

h) signature of the responsible person of the supplier (manufacturer);

i) the signature of the responsible person of the office or commodity-transport point of the association "Tsentrgaz", which accepted the tank.

§ 70. For each tank filled with liquefied gas, the supplier (manufacturer) issues a passport certifying that the quality of the product meets the requirements of GOST or technical specifications.

The passport must contain:

a) the name of the supplier (manufacturer), its location or code name, its trademark;

b) product name and brand;

c) number of GOST or technical specifications;

d) fractional composition according to GOST or technical conditions and actual;

e) the date of the analysis;

f) mass of the product, t;

g) product temperature, °С;

h) railway number of the tank car.

When transporting liquefied gases by routes on one consignment note, the passport must be attached in at least five copies.

§ 71. The amount of product poured into the tank is determined by the supplier (manufacturer). An acceptance certificate is drawn up for the quantity of the filled product transferred by the supplier (manufacturer) to the office or commodity-transport point of the Tsentrgaz association.

3. Transportation of tanks

§ 72. Tanks accepted from the supplying plant (manufacturer) are presented for transportation by the office or the goods and transport point of the association "Tsentrgaz", which must submit the consignment note for each tank to the departure station.

When transporting liquefied gases by routes (tanks are addressed to one destination station to the address of one consignee), the office or the goods and transport point submits one waybill.

In local traffic, groups of wagons may also be accepted for transportation under one consignment note in the manner established by the head of the road.

The waybill is drawn up in the name of a specific consignee, signed by the employees of the office or the freight and transport point, accompanies the tanks along the entire route and is issued to the consignee along with the tanks at the destination station.

§ 73. The waybill is the main shipping document. All information required by the consignment note must be entered in the appropriate boxes by the office or the goods and transport point of the Tsentrgaz association, guided by section 6 of the "Rules for the Transportation of Goods" of the Ministry of Railways. No erasures or blots on the invoice are allowed. If you change the information entered in the invoice, you must fill out a new invoice form.

At the top of the consignment note, the office or freight forwarder must affix a colorful stamp about the danger of the goods.

Each waybill presented for transportation must be accompanied by a passport certifying the quality of the product (the passport is attached to the waybill).

§ 74. The time of acceptance of tanks for transportation is certified by the calendar stamp of the station on the consignment note. To certify the acceptance of tanks for transportation, the station of departure issues a receipt to the office or to the commodity-transport point on the acceptance of the cargo.

§ 75. Railways are obliged to ensure the advancement of both loaded and empty tanks within the time limits specified in section 14 of the "Rules for the Transport of Goods" of the Ministry of Railways.

Tank cars, both loaded and empty, follow the railways without the escort of conductors.

§ 76. A tank car with a detected malfunction, due to which it cannot proceed as intended, is uncoupled from the train and diverted to a separate track to a safe place. In the event of a malfunction of a tank vessel, as well as in the event of damage as a result of a crash or accident, the station master notifies the consignor by telegraph through the head of the departure station of the nature and cause of the malfunction.

Upon receipt of notification of the uncoupling of the tank, the office or freight forwarding point must send a responsible representative to the uncoupling station.

An error has occurred

The payment was not completed due to a technical error, cash from your account
were not written off. Try to wait a few minutes and repeat the payment again.

Introduction date 1978-01-01

INTRODUCED BY DECREE State Committee standards of the Council of Ministers of the USSR of February 12, 1976 N 381

By the Decree of the State Standard of 08.02.83 N 702, the validity period was extended until 01.01.88 *

* The validity period was removed by the Decree of the State Standard of Russia N 1044 of 08/27/92. (IUS N 11, 1992). Note "CODE"

REPUBLICATION (July 1983) with Amendment No. 1 approved in February 1983 (IUS 5-83).

INTRODUCED Amendment No. 2, approved by the Decree of the USSR State Committee for Standards No. 2936 dated 16.08.88, entered into force on 01.01.89 and published in IUS No. 12, 1988

Amendment No. 2 was introduced by the legal bureau "Kodeks" according to the text of IUS No. 12, 1988.

This standard applies to specialized trucks, trailers and semi-trailers-tanks of category U category 1 in accordance with GOST 15150-69 (hereinafter referred to as "tank trucks") and intended for the transportation and distribution of liquefied hydrocarbon gases in accordance with GOST 20448-80 (technical butane , mixtures of propane and technical butane) for pressure up to 1.8 MPa during operation on all roads of the common network of the USSR in accordance with the "Instruction for ensuring the safety of transporting dangerous goods by road" approved by the USSR Ministry of Internal Affairs.

Definitions of terms used in this International Standard are given in the reference annex.

1. TYPES, MAIN PARAMETERS AND DIMENSIONS

1.1. Depending on the transport base, the following types of tank trucks and road trains are installed:

AC - tank cars;
ПЦ - tank trailers;
APC - road trains, consisting of a tank car and a tank trailer;
PPC - tank semi-trailers;
APTC - road trains consisting of a tractor vehicle and a tank semi-trailer.

Depending on the purpose, two groups of tank trucks and road trains are installed:

T - transport, intended for transportation of liquefied gases;
Z - filling stations designed both for transporting liquefied gases and for using them as tankers.

The symbolic designation of tank trucks and road trains should include: type of tank truck (road train), group, nominal capacity, model number of the transport base (with the exception of road trains), designation of technical conditions.

Examples of symbols:

tank car with a transport nominal capacity of 8 m3 based on the ZIL-130 car:

Tank truck ATsT-8 - 130 TU…

tank trailer with a transport nominal capacity of 10 m3 based on the GKB-8350 trailer:

Tank truck PCT-10 - 8350 TU…

road train transport with a nominal capacity of 20 m3, consisting of a tank car and a tank trailer:

Road train-APCT-20 TU…

refueling road train with a nominal capacity of 12 m, consisting of a tractor vehicle and a tank semi-trailer:

Road train-APPTsZ-12 TU…

(Changed edition, Rev. N 2).

1.2. Static axial loads, mass and dimensions of tank trucks must comply with regulatory and technical documentation.

(Changed edition, Rev. N 1).

1.3. The norms and methods for calculating tankers must comply with GOST 14249-80, GOST 24755-81 and GOST 25895-83.

The bottoms and shells of the vessel bodies must be made of sheet steel grade 16GS in accordance with GOST 5520-79, which must undergo heat treatment to ensure impact strength values of at least 3 kgf m/cm at a temperature of minus 40 °C. As materials for welded parts, the following should be used:

for flanges, hatches and manholes, reinforcing rings and linings of supports - steel 16GS according to GOST 5520-79;
for couplings, branch pipes, fittings and flanges - steel 09G2S according to GOST 19282-73.

It is allowed to manufacture vessels and welded parts from steels whose physical and chemical characteristics are not lower or exceed the requirements of the above standards.

1.4. The dimensions that determine the location of the king pin on the tank semi-trailer, as well as the contour of the lower front part of the tank semi-trailer, must comply with the requirements of GOST 12105-74.

Coupling eyelets of trailers - in accordance with GOST 2349-75, coupling pins of semi-trailers - in accordance with GOST 12017-81.

(Changed edition, Rev. N 1).

1.5. Nominal capacities and main dimensions of tanker containers should be selected taking into account the carrying capacity of the base vehicle, trailer or semi-trailer and economical cutting of material.

When choosing nominal capacities, one should be guided by the parametric range of the GEE type, version 1 in accordance with GOST 9931-85.

The bottoms of the vessels of tankers must comply with the requirements of GOST 6533-78.

(Changed edition, Rev. N 1, 2).

2. TECHNICAL REQUIREMENTS

2.1. Tank trucks must be manufactured in accordance with the requirements of this standard for technical specifications for a specific type of tank truck and comply with the current "Rules for the Design and Safe Operation of Pressure Vessels" approved by the USSR Gosgortekhnadzor.

(Changed edition, Rev. N 1).

2.2. The design of tankers should be calculated:

a) the strength of the vessel from the action of the internal overpressure of propane at the design wall temperature of +50 °C;

b) strength load-bearing structures(vessels of tank trucks of a frameless design, frame, vessel and supports), taking into account the dynamic coefficient = 2.5, which takes into account the impact load perceived by tank trucks when driving on uneven roads;

c) on the stability of the cylindrical shape of the vessel from the combined action of maximum weight bending loads (when the vessel is filled with butane at a design temperature of minus 40 °C) and vacuum;

d) the distribution of the mass of the equipped tank truck and the total mass along the axes of the transport base and sides;

e) longitudinal and transverse stability against overturning.

f) on the fatigue strength of the vessel (calculation of strength under low-cycle loads - according to GOST 25895-83).

(Changed edition, Rev. N 1, 2).

2.3. Transport bases of tank trailers and tank semi-trailers must comply with the requirements of GOST 3163-76, tank cars - with the requirements of GOST 21398-75.

(Changed edition, Rev. N 1).

2.4. The design of transport tankers should provide:

a) filling and draining gas using the means of liquefied gas filling stations (LGS) and cluster bases (CB);

b) gas discharge due to the difference in levels in the drained and filled vessels.

2.5. The design of refueling tankers should provide:

a) filling the tank transported by this vehicle;

b) filling the consumer's tank with his own means both from the tank transported by this vehicle and from another tank.

2.6. Each tank truck must have the following equipment and devices:

a) shut-off valves and plugs on the filling and drain pipelines and the vapor phase pipeline;

b) a pressure gauge with an accuracy class of at least 2.5 with an upper measurement limit of 2.5 MPa (25 kgf/cm) of vibration-resistant design and with a device for connecting a control pressure gauge;

c) safety valves that meet the requirements of the "Rules for the Design and Safe Operation of Pressure Vessels" approved by the USSR Gosgortekhnadzor;

d) liquefied gas level indicator with measurement limits from 10 to 90% of the geometric capacity, with an integer division of 5%. It is forbidden to use glass tubes as a level indicator, as well as the use of level indicators with gas emissions into the atmosphere;

e) valve for maximum filling with a control tube of 85% level;

f) devices that automatically protect the tanker from emergency gas flow through the discharge and filling communications in the event of a hose rupture (such as a high-speed valve on the drain pipeline and a check valve on the filling pipeline);

g) a mechanism for automatic blocking of the vehicle ignition system in the course of loading and unloading operations for tank trucks of the AC type;

h) at least two suction and delivery hoses 10 m long for tank semi-trailers and at least 6.5 m for tank cars and tank trailers;

i) devices for removing residual gas from the hoses into the system or purge candle;

j) external lighting devices according to GOST 8769-75;

k) at least two powder fire extinguishers with a capacity of at least 5 liters each;

m) a grounding cable with a pin-clamp and a chain constantly touching the ground to protect the tanker from static electricity;

m) removable spark arrester;

o) a set of special tools;

n) two signs "Danger" in accordance with GOST 10807-78.

(Changed edition, Rev. N 1, 2).

a) a means or device with a control panel for draining and filling liquefied gas;

b) a filter for cleaning liquefied gas from mechanical impurities in front of the filling and draining facility;

c) a device for measuring the amount of released gas.

(Changed edition, Rev. N 2).

2.8. At the request of the consumer, the following additional equipment must be installed on tankers:

a) automatic filling limiter on the filling pipeline;

b) (Deleted, Rev. N 2).

c) anti-freeze drain valve;

d) a signaling device in the driver's cab indicating the maximum allowable gas pressure in the vessel;

e) means for accelerated discharge of gas on transport tankers;

f) a device that provides the possibility of sampling gas from a vessel of tank trucks of the AC type and supplying it to the power supply system of a vehicle converted to operate on liquefied gas.

(Changed edition, Rev. N 1).

2.9. Each tank truck must be equipped with a towing hook for pulling out, a buffer protruding at least 50 mm beyond the size of the vessel, and a device protecting communications and equipment for securing hoses during the movement of tank trucks, a bracket (or place) for attaching a license plate and information tables of the SIO (hazard information system), storage box for spare parts, special tools and accessories, devices for installing a spare wheel and protecting the fuel tank.

The installation (or application) of SIO tables and the protection of the fuel tank must be carried out in accordance with the requirements of the "Instructions for ensuring the safety of the transportation of dangerous goods by road" according to the technical documentation for a specific type of tanker.

(Changed edition, Rev. N 1, 2).

2.10. The installation of special equipment should not reduce the basic parameters of the passability of base vehicles, trailers and semi-trailers, with the exception of the rear overhang angle, which must be at least 18°.

(Changed edition, Rev. N 1).

2.11. Tanker trucks must be equipped with a muffler exhaust pipe in accordance with the requirements of the "Instructions for Ensuring the Safety of the Transportation of Dangerous Goods by Road".

(Changed edition, Rev. N 2).

2.12. Pneumatic brake drive of tank trucks must comply with the requirements of GOST 4364-81.

(Changed edition, Rev. N 1).

2.13. The capacity of safety valves is calculated as specified in GOST 12.2.085-82.

The number of valves must be at least two. The design and throughput of safety valves must comply with the requirements of the Rules for the Design and Safe Operation of Pressure Vessels.

The valves must be installed in the vapor phase.

(Changed edition, Rev. N 1, 2).

2.14. On the lines leading to the pressure gauge and safety valves, it must be impossible to connect for gas sampling.

2.15. The diameters of the flow sections in front of the pressure gauges should be no more than 3 mm.

(Changed edition, Rev. N 2).

2.16. (Deleted, Rev. N 2).

2.17. The means for draining and filling liquefied gas must be installed with the obligatory presence of a bypass with a valve that ensures the draining and filling both with the help of the means itself and without it.

The rotation drive of the pouring and filling means can be carried out both from the engine of the base chassis, and from an autonomous electric motor with a voltage of 220/380 V in an explosion-proof version.

(Changed edition, Rev. N 1).

2.18. (Excluded, Rev. N 1).

2.19. The connecting devices of the suction and delivery hoses must be made of materials that do not give sparks during impacts, or have coatings from these materials.

The fittings of the sleeves must be interconnected by a soldered metal jumper, which ensures the closure of the electrical circuit to remove static electricity.

Rubber-fabric sleeves (flexible hoses) must comply with the requirements of the "Safety Rules in the Gas Industry" of the USSR Gosgortekhnadzor.

2.20. Connecting devices of sleeves and fittings of loading and unloading communications of tankers must have a M60 x 4 H thread in accordance with GOST 8724-81.

(Changed edition, Rev. N 1, 2).

2.21. Vessels and equipment mounted on the chassis of trailers and semi-trailers must be removable.

2.22. Each vessel of tank trucks must have a round hole with a diameter of 500 mm on the bottom.

2.23. Vessels of tank trucks must be equipped with devices for damping hydraulic shocks. The number and location of devices should ensure the division of the vessel into compartments with a capacity of not more than 4 m3 each and should not interfere with the internal inspection of the vessel. The minimum area of the device must be at least 75% of the cross-sectional area of the vessel.

(Changed edition, Rev. N 1).

2.24. Vessels must be thoroughly cleaned and dried, valves and lids must be tightly closed, plugs must be installed on fittings.

The internal surfaces of the vessels in contact with the gas must ensure the safety of performance and the purity of the transported gas.

(Changed edition, Rev. N 2).

2.25. Vessels of tank trucks must be of steel, welded construction.

2.26. Seams of welded joints at manual welding must be made in accordance with GOST 5264-80, with automatic and semi-automatic - in accordance with GOST 8713-79, non-standard seams - according to working drawings and specifications.

The class of welded joints of vessel elements is 3 according to GOST 23055-78.

(Changed edition, Rev. N 2).

2.27. The following defects are not allowed in welded joints:

a) cracks of all types and directions located in the weld metal, along the fusion line and in the near-weld zone of the base metal, including microcracks detected during microexamination;

c) undercuts, influxes, burns and unmelted craters;

d) lack of penetration located in the cross section of the welded joint (between individual beads and layers of the weld and between the base metal and the weld metal);

e) pores in the form of a continuous grid;

f) single slag and gas inclusions with a depth of more than 10% of the wall thickness and more than 3 mm in length;

g) chains of pores and slag inclusions with a total length of defects greater than the wall thickness in the weld area equal to ten times the wall thickness;

h) accumulation of gas pores and slag inclusions in separate sections of the weld over 5 pcs. per 1 cm of the seam area; the maximum linear size of an individual defect along its greatest extent should not exceed 1.5 mm, and the sum of their linear dimensions should not exceed 3 mm.

(Changed edition, Rev. N 1).

2.28. Outside surface tank trucks should be coated with light gray enamel, coating class V according to GOST 9.032-74, operating conditions group VI according to GOST 9.104-79 or other light gray enamels intended for painting surfaces operated in atmospheric conditions.

It is allowed to manufacture tankers with a protective shadow casing made of fireproof material located above the upper part of the vessel.

(Changed edition, Rev. N 1, 2).

2.29. Service life of vessels of tankers - 20 years.

(Changed edition, Rev. N 1).

2.30. The resource of tankers before the first overhaul must correspond to the resource of the base chassis.

The established resource, the mean time between failures and the established trouble-free operating time of tankers must be no less than the corresponding indicators of the base chassis.

Specific values of indicators of failure criteria and limit states are established for each specific type of tankers by regulatory and technical documentation.

(Changed edition, Rev. N 1, 2).

3. COMPLETENESS

3.1. The completeness of the tanker is established by the technical specifications for a specific type of tanker.

(Changed edition, Rev. N 2).

3.2. 1 set is attached to the tank truck kit. operational documentation in accordance with GOST 2.601-68 and a pressure vessel passport in the form established by GOST 25773-83.

The composition of the operational documentation set is established in the technical specifications for a specific type of tankers.

(Changed edition, Rev. N 1, 2).

4. ACCEPTANCE RULES

4.1. To verify the compliance of tankers with the requirements of this standard, acceptance and periodic tests should be carried out.

4.2. Acceptance tests should be subjected to each tanker for compliance with the requirements of paragraphs. 2.6-2.9; 2.11; 2.12; 2.14; 2.19; 2.22-2.28; 3.1; 8.1-8.15.

The run tests according to clause 5.12 should be subjected to one tank truck out of a batch of ten pieces, which has passed the acceptance tests.

(Changed edition, Rev. N 1, 2).

4.3. The test results according to paragraphs 2.26 and 2.27 must be entered in the vessel passport. In accordance with the requirements of the Rules for the Design and Safe Operation of Pressure Vessels, a mark must be made in the tanker's passport confirming the acceptance of the tanker by the technical control service.

(Changed edition, Rev. N 1).

4.4. Periodic tests should be subjected once a year to three tankers from among those that have passed acceptance tests for compliance with the requirements of paragraphs. 1.2; 2.4-2.15; 2.17-2.23; 2.26; 2.27.

(Changed edition, Rev. N 2).

4.5. The tank truck assembly during acceptance and periodic tests must be tested for the tightness of communications and devices.

4.6. The results of periodic tests are final.

4.5, 4.6. (Changed edition, Rev. N 1).

5. TEST METHODS

5.1. The determination according to clause 1.2 of the total mass and mass of the equipped tank truck, as well as the distribution of the total mass and mass of the equipped tank truck along the axes and sides, is carried out by weighing on a scale general purpose in accordance with GOST 14004-68, with a weighing limit of up to 20 tons, division value of 10 kg. Before weighing, the completeness and packing of the equipment, the presence of full refueling, the absence of pollution and foreign objects on the tanker should be checked.

The dimensions of the scales must allow the tank truck to be placed on them with all wheels at the same time.

When weighing, the wheels of the tank truck must not be braked, the gear lever must be in neutral position, the engine must be stopped.

(Changed edition, Rev. N 1).

5.2. Check according to paragraph 2.4; 2.5 is produced on liquefied gas according to the program and methodology drawn up by the developer. At the same time, the operability, adjustment and adjustment of all components, assemblies and devices of the tanker should be checked for compliance with their technical characteristics.

(Changed edition, Rev. N 1).

5.3. Check according to paragraphs. 2.6-2.9; 2.11; 2.13; 2.14; 2.17; 2.21; 2.23-2.25; 2.28; 3.1; 6.1; 6.4; 8.1-8.15 and correct assembly are carried out by external inspection.

Inspection should be carried out without removing and disassembling the equipment.

(Changed edition, Rev. N 1, 2).

5.4. Verification according to clause 2.19 is carried out by external inspection. Sleeve dents, sheath wear, cord delamination, breaks in the grounding conductor are not allowed. The integrity of the grounding conductor of the sleeve must be checked control lamp at a voltage of 36 V.

5.5. Checking according to paragraphs 1.4 and 2.22 is carried out by measuring the dimensions with a caliper in accordance with GOST 166-80 and a tape measure in accordance with GOST 7502-80.

5.6. Checking according to clause 2.12 is carried out in accordance with GOST 4364-81.

(Changed edition, Rev. N 2).

5.7. Checking according to clauses 2.15, 2.20 is carried out with ring gauges and plugs PR and NOT of the corresponding tolerance field and diameter.

(Changed edition, Rev. N 2).

5.8. Checking according to clause 1.5 is carried out by measuring the main dimensions of the vessel.

At least three measurements are taken different places. The arithmetic mean value of the dimensions is taken as the actual size.

5.9. Verification according to paragraphs 2.26 and 2.27 is carried out:

a) external inspection of 100% of welded joints in accordance with GOST 3242-79;

b) mechanical testing of samples in accordance with GOST 6996-66;

c) transillumination of 100% of welded joints in accordance with GOST 7512-82 or ultrasonic testing in accordance with GOST 14782-86, or X-ray television method in accordance with the requirements of industry regulatory and technical documentation.

Sensitivity class of radiographic control of welded joints of vessel elements - 1 according to GOST 7512-82.

Sensitivity standards - wire type N 2 and groove type N 1, according to GOST 7512-82.

(Changed edition, Rev. N 2).

5.10. Checking for equipment performance and valve tightness is carried out according to the program and methodology drawn up by the developer and agreed with the customer.

5.11. Checking the tightness of the connection of communications and devices of the tank truck assembly should be carried out with an air pressure of 1.8 MPa or a fluorescent-hydraulic method with a pressure of 2.3 MPa.

Tests by the luminescent-hydraulic method must be carried out in accordance with the normative and technical documentation. The test results must be recorded in the vessel passport.

Pneumatic tests are allowed only if the results of an internal inspection and checking the strength of the vessel with hydraulic pressure are positive and the following precautions are observed: the valve on the filling pipeline from the pressure source and pressure gauges must be outside the room in which the tanker being tested is located, and people during the test with pneumatic pressure removed to a safe place.

When testing, plugs must be installed on the vessel fittings, stuffing boxes of shut-off and control valves must be tightened.

The pressure in the vessel must increase smoothly, the vessel must remain under the specified pressure for the time necessary to inspect the vessel and check the tightness of its seams and detachable connections soap solution.

Tapping of vessels, elimination of defects and tightening of fasteners in vessels under pressure is not allowed.

After the defects are eliminated, the tests are repeated.

(Changed edition, Rev. N 1)..

5.12. Tankers must be subjected to road tests:

a) during acceptance tests by mileage of equipped tankers on roads at a speed provided for during the running-in of the base vehicle, for a distance of at least 10 km;

b) during periodic mileage tests of tank trucks with a full load of liquefied gas for a distance of at least 100 km, of which 50 km on paved roads and 50 km on dirt roads and rough terrain. The movement should be carried out at the highest possible speed, while maintaining traffic safety, taking into account road conditions.

During the tests, the operability of electrical equipment, pneumatic equipment, the reliability of all locks and latches, the attachment points of the vessel, communications and fittings of instruments and other equipment are checked, and three vigorous braking is performed at a speed of 40 km / h to a complete stop.

(Changed edition, Rev. N 1, 2).).

6. MARKING, PACKAGING, TRANSPORT AND STORAGE

6.1. On the body of the vessel, distinctive stripes and the inscriptions "Propane - flammable" must be applied in accordance with the requirements of the "Rules for the Design and Safe Operation of Pressure Vessels" approved by the USSR Gosgortekhnadzor.

Each tank truck must have information tables of the SIS, made and installed in accordance with the requirements of the Instruction for Ensuring the Safety of the Transportation of Dangerous Goods by Road.

(Changed edition, Rev. N 1, 2).

6.2, 6.3 (Deleted, Rev. N 2).

6.4. Passport data plates must comply with the requirements of GOST 12969-67 and GOST 12971-67, the font of the inscriptions is made using the flat printing method in accordance with GOST 26020-83.

(Changed edition, Rev. N 2).

6.5. Tank trucks, spare parts and tools must be preserved in accordance with GOST 9.014-78, product group - II, storage conditions - strict, conservation period - 3 years.

The inner surface of the vessel and pipelines is not subject to preservation.

(Changed edition, Rev. N 1, 2).

6.6. Spare parts, tools and accessories must be placed in the box of the tanker designed for storing spare parts, tools and accessories.

It is allowed to pack spare parts, tools and accessories separately in wooden boxes according to GOST 16536-84.

The weight of the box with packed products should not exceed 60 kg.

(Changed edition, Rev. N 2).

6.7. Each box must be accompanied by an accompanying document indicating the manufacturer, type of product, number of products packed in boxes, date and period of conservation and packing date.

6.8. Operational documentation must be packed in a case polyethylene film in accordance with GOST 10354-82 and placed in a box of a tank truck for storing spare parts, tools and accessories.

(Changed edition, Rev. N 2).

6.9. Transportation of tank trucks can be carried out on their own, by rail and water transport in accordance with the rules for the carriage of goods in force for this type of transport.

Transportation conditions in terms of the impact of climatic factors - according to storage conditions 8 GOST 15150-69.

6.10. Storage conditions for tankers in terms of the impact of climatic factors - according to storage conditions 5 GOST 15150-69.

It is allowed to store tank trucks in open areas, if this does not contradict the requirements for storing the transport base (car, trailer, semi-trailer).

6.9, 6.10. (Changed edition, Rev. N 1).

7. MANUFACTURER WARRANTY

7.1. The manufacturer must guarantee the compliance of tankers with the requirements of this standard, provided that the consumer observes the operating and storage conditions established by this standard and the operating instructions.

7.2. The warranty period for a tank truck is 3 years and is calculated from the date of its registration with the traffic police of the Ministry of Internal Affairs, but no later than one month from the date of receipt by the consumer.

(Changed edition, Rev. N 1).

7.3. For cars, trailers, semi-trailers and other components guarantee period- according to the normative and technical documentation for these products.

8. SAFETY REQUIREMENTS

8.1. Vessels of tank trucks must be manufactured, tested and equipped with fittings and instruments in accordance with the requirements of the Rules for the Design and Safe Operation of Pressure Vessels and this standard.

8.2. All controls of tank trucks must be accessible for manual control and convenient for operation during operation. All valves should be easily opened and closed (one-handed) by the handwheel, ensuring complete tightness. In this case, the moment applied to them should not exceed 4.9 N m.

(Changed edition, Rev. N 1).
8.3. Controls must exclude the possibility of spontaneous switching on of control under the influence of transport shaking and must have clear explanatory inscriptions.

8.4. Plugs must be installed on the fittings during transportation and storage of gas.

8.5. Shut-off valves must be closed with protective covers, providing the possibility of sealing them for the period of transportation and storage of gas in tankers.

8.6. At least two safety valves must be installed on each vessel to prevent pressure increase in the vessel above the established norm.

8.7. Drain and fill lines must have devices to relieve pressure from the hoses before they are disconnected into the purge plug.

Each vessel must have at least two devices.

(Changed edition, Rev. N 1).

8.8. To prevent spontaneous movement of tankers when parked, the design of tankers should be provided with a parking brake and wheel chocks, as well as fixers for the working position of support devices for tankers of the PPTs and APPTs types.

(Changed edition, Rev. N 1, 2).

8.9. To prevent the front part of tank trucks of the PPTs and APPTs types from falling if the fifth wheel coupling of the tractor fails to operate at the moment of starting the movement, a safety chain or cable must be installed on the front support of the tankers of the PPTs and APPTs types.

After checking the operation of the fifth wheel coupling, the safety chain or cable is removed.

(Changed edition, Rev. N 2).

8.10. To ensure electrical safety during operation, all tank truck equipment must be grounded.

The fittings of rubber-fabric sleeves must be interconnected by a soldered metal jumper, which ensures the electrical circuit is closed.

Each tank truck must have an electrically conductive grounding chain connected to the vessel with a length that, when the tank truck is unloaded, makes contact with the ground of at least 200 mm, and a ground cable with a pin-clamp at the end for penetration into the ground or connection to the ground loop.

(Changed edition, Rev. N 1).

8.11. The electrical equipment of tankers must comply with the "Electrical Installation Rules" (PUE) and Sec. 4 Instructions for ensuring the safety of the transport of dangerous goods by road.

(Changed edition, Rev. N 1, 2).

8.12. Fire extinguishers must be installed: one on the chassis (in the cab in close proximity to the driver and in an easily accessible place for him), the second - on the tank (in the front end or on its left side, mounting height - no more than 1.8 m). Fire extinguishers located outside the cabin must be protected from the effects of precipitation and dirt. The design of the bracket should ensure reliable fastening of fire extinguishers and their quick removal if necessary.

(Changed edition, Rev. N 2).

8.13. (Deleted, Rev. N 2).

8.14. The distinctive color of the fittings is according to the "Rules for the Design and Safe Operation of Pressure Vessels" approved by the USSR Gosgortekhnadzor.

8.15. On both sides of the vessel from the seam of the front bottom to the seam of the back bottom, distinctive red stripes 200 mm wide down from the longitudinal axis of the vessel must be applied.

Above the distinctive stripes must be inscribed in black "Propane - flammable".

The inscription "Flammable" shall be applied on the back bottom of the vessel.

8.16. The maximum filling rate with gas is 85% of the geometric capacity of the vessel.

(Changed edition, Rev. N 1).

8.17. It is not allowed to operate the tanker when:

a) expiration of the terms of the next technical examination of the vessel and the car, trailer or semi-trailer;

b) damage and malfunction of the vessel, fittings, grounding and running gear of the tank truck;

c) the absence of a passport, established stamps, inscriptions, necessary fittings, fire extinguishers and residual overpressure of at least 0.05 MPa;

d) the absence of distinctive coloring of the tanker and the contaminated surface of the vessel.

(Changed edition, Rev. N 1, 2).

8.18. When performing any work, it is necessary to ground the tank truck.

8.19. It is forbidden to heat shut-off valves with fire, smoking or lighting matches near the tank truck. Heating should be done with hot air, steam or water.

(Changed edition, Rev. N 2).

8.20. Before inspecting, repairing or cleaning the vessel, measures must be taken to remove residual gas and its vapors, as provided for in the operating instructions and the "Safety Rules in the Gas Industry" of the USSR Gosgortekhnadzor.

8.21. (Excluded, Rev. N 1).

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