Checking ventilation in mkd and results. Periodic inspection of smoke and ventilation ducts Equipment for checking ventilation in an apartment building

Ventilation ducts in a private house or high-rise building are necessary for the outflow of exhaust air and the supply of fresh air. The air exchange system is designed and built in accordance with the requirements SNiP 2.04.05-86 and SNiP 2.08.01-89. Basis for maintenance, inspection and cleaning ventilation ducts serve as standards for the operation of housing stock.

Types of ventilation ducts

All types of ventilation ducts differ in the following indicators:

Section shape:
- rectangular;
- round.
Production material:
- PVC, plastic;
- brick;
- concrete;
- metal.
Configurations:
- hard;
- flexible.

In apartment buildings with natural air exchange, ventilation ducts are equipped with special rectangular concrete blocks. Ventilation ducts in private houses with furnace heating perform from brickwork.

Rules for masonry ventilation ducts

In the manufacture of ventilation ducts in a private house or high-rise building:

only solid brick is used;
standard section diameter 140 x 140 mm. If the ventilation duct is adjacent to the chimney, a wall of ½ brick is made between them;
so that the masonry is even and does not become clogged during the construction process, the inventory buoy technique is used (an empty plywood box is inserted into the trunk, which is moved as the mine is being built);
The laying from the inside should be as smooth as possible, since any irregularities impair traction;
To lay out inclined segments, a brick hewn at the required angle is used.

For gas or steam heating, PVC or metal types ventilation ducts.

Create the least resistance smooth views ventilation ducts, such as PVC pipes or round galvanized steel pipes.

Flexible ducts are often installed in small sections with many turns and forced air exchange. The ribbed inner surface creates a strong resistance to air flow and reduces aerodynamic properties.

The height of the buoy should be 8 - 10 rows.

Requirements for ventilation ducts

The requirements for ventilation ducts apply to all types, regardless of the materials and type of system:

Ventilation ducts are being built in accordance with the project and building codes;
When designing, the need for periodic checks of ventilation ducts and their cleaning is taken into account. As well as the rules against fire safety;
Air is removed from heated buildings by natural ventilation;
The ventilation grilles on the channels must always be open;
The laying of ventilation ducts must be smooth, without protrusions and bulges, the direction of the ducts is vertical;
When replacing rectangular ventilation ducts with round ones, the cross-sectional area is selected equal to or greater than the original one;
The thickness of the masonry of the ventilation duct made of bricks without cavities is from 12 cm. Internal walls the ventilation duct is not plastered, excess mortar is removed by mopping;
Ventilation ducts of private houses are allowed to be combined with one riser with chimneys.

Requirements for ventilation channels are taken into account during the construction and operation of the building.

Checking the ventilation ducts and its frequency

Checking the condition of the ventilation ducts is carried out by employees of Rospotrebnadzor. AT residential buildings This is the responsibility of the management company. The inspection plan will be coordinated with the sanitary services.

The first check of the condition of the ventilation ducts is scheduled when the building is put into operation.

The frequency of checks of ventilation ducts in high-rise buildings is once every 12 months, in rooms with gas appliances once every 6 months. In rooms with special requirements for the state of the air environment (children's and medical, public catering) - once every 6 months.

A technique has been developed for unscheduled inspections of ventilation ducts, which is used if there are grounds.

The inspection determines the need for repair, cleaning and disinfection of ventilation ducts.

When checking ventilation ducts in apartment buildings, pay attention to:

the thickness of the walls of the ventilation duct made of brickwork;
compliance of the material with the requirements of SNiP;
compliance of the section with the project;
quality of thermal insulation;
head height above roof level, its condition;
protection from rain and snow;
the presence of traction;
conformity of the volume of air removed to the norms.

During checks of the condition of the ventilation ducts apartment buildings special attention is paid to the condition of the walls. Deposits of dust, debris, cobwebs, blockages are detected.

All results are recorded in the examination certificates in two copies. There is a period of 14-30 days for the elimination of comments.

Canal survey methodology

According to the method of checking ventilation ducts, all measurements are carried out at a temperature difference in the street and in the building equal to 13 degrees.

To check the draft in the ventilation duct, attach a piece of paper to the ventilation grill thin paper. If the draft is sufficient, the sheet is held on the grate by itself.

The speed of air movement in the ventilation duct is measured by an anemometer. Having determined it and knowing the parameters of the duct, it is possible to calculate the volume of air passed through the system.

Examination of the masonry of ventilation ducts is carried out using a camera, video camera or stereo tube. The stereo tube is inserted into the ventilation duct, the lamp is turned on and the image is fed through the system of mirrors into the eyepiece.

Most modern device for periodic checks of ventilation ducts - a photo-acoustic video camera. It records and archives the received data. visual method inspection allows you to determine the need to clean the ventilation duct, the place of destruction, unauthorized alteration of the ventilation shaft by residents.

Cleaning the ventilation ducts

You can only clean the part of the ventilation duct adjacent to the apartment on your own.

What is necessary:

screwdriver;
brush or broom on a long handle;
vacuum cleaner;
respirator and cotton gloves.

Before cleaning the ventilation ducts in the apartment, put on a respirator and protective gloves. When removing the grate, be careful! Insects and even rodents can live in the ventilation duct.

Work progress:

carefully remove the ventilation grille;
sweep the accessible part of the ventilation pipe with a broom;
vacuum the remaining dust;
thoroughly rinse the ventilation grill and mesh, put them in place.

Unfortunately, cleaning the apartment ventilation ducts rarely brings a visible result. And only specialists can remove rubbish from the entire mine.

Standard cleaning of ventilation ducts is carried out by brush mechanisms with brushes of suitable diameter. Sometimes special vacuum cleaners are used. If the ventilation ducts large diameter, people in protective suits and masks can descend on climbing equipment. They sort out the rubble in the mines, remove large debris and stones, and clean the walls.

The cost of professional services depends on the amount of work and the complexity of access to the ventilation shaft. In some cases, this even requires the construction of scaffolding.

The ventilation system of the house is a common property and must be maintained Management Company, to which you pay a lot of money every month under the item “maintenance and repair of the home”.
It is installed next. documents:

A. "Rules for the maintenance of common property in an apartment building" (approved by the Decree of the Government of the Russian Federation of August 13, 2006 N 491):
… 2. Common property includes:
e) mechanical, electrical, SANITARY AND OTHER EQUIPMENT located in an apartment building outside or inside the premises and serving more than one residential and (or) non-residential premises(apartments);»

B. "The minimum list of services and works necessary to ensure the proper maintenance of common property in an apartment building, and the procedure for their provision and implementation" (approved by Decree of the Government of the Russian Federation No. 290 of April 03, 2013)

“... 15. Works performed for the proper maintenance of the VENTILATION AND SMOKE EXHAUST systems of apartment buildings:
- maintenance and seasonal management of equipment for ventilation and smoke removal systems, determination of the operability of equipment and system elements;
- condition monitoring, identification and elimination of the causes of unacceptable vibrations and noise during operation ventilation unit;
... elimination of leaks in ventilation ducts and shafts, elimination of blockages in channels, elimination of malfunctions of gates and throttle valves in exhaust shafts, umbrellas over shafts and deflectors, replacement of defective exhaust grilles and their fastenings;
… condition monitoring and restoration of anti-corrosion painting of metal exhaust channels, pipes, pallets and deflectors;
- in case of detection of damages and violations - development of a plan for restoration work (if necessary), carrying out restoration work.

B. Rules and Regulations technical operation housing stock"(approved by the Regulations of the Gosstroy of the Russian Federation of September 27, 2003 No. 170):

“… V. Maintenance and repair engineering equipment
… 5.7. Ventilation
5.7.1. Design temperatures, multiplicity and norms of air exchange for various premises residential buildings must comply established requirements. Natural exhaust ventilation must ensure the removal of the required volume of air from all the premises provided for by the project at current outdoor temperatures of 5 degrees. From and below….
5.7.2. Personnel servicing the ventilation systems of residential buildings are obliged to produce:
- scheduled inspections and elimination of all identified system malfunctions;
- replacement of broken exhaust grilles and their fastening;
- elimination of leaks in ventilation ducts and shafts;
- elimination of blockages in channels;
- elimination of malfunctions of gates and throttle valves in exhaust shafts, umbrellas over shafts and deflectors.
… 5.7.7. Ventilation systems in residential buildings must be regulated depending on sharp drops or increases in the current outdoor temperature and strong winds.
Engineering and technical workers of housing stock maintenance organizations are required to instruct residents on the rules for regulating ventilation systems.
5.7.8. It is not allowed to seal the exhaust ventilation grilles or cover them with household items, as well as use them as fastenings for clotheslines for drying clothes ....
5.7.9. The heads of the central exhaust shafts of natural ventilation must have umbrellas and deflectors.
… 5.7.11. The list of deficiencies in the ventilation system TO be ELIMINATED DURING REPAIR of a residential building should be compiled on the basis of spring inspection data ....

Appendix N 4 (recommended)
LIST OF WORKS ON THE MAINTENANCE OF RESIDENTIAL BUILDINGS
Work performed during the implementation technical inspections and bypasses of individual elements and premises of residential buildings
…6. Checking the presence of draft in the smoke ventilation ducts.

Appendix N 7 (recommended)
LIST OF WORKS RELATED TO CURRENT REPAIRS
… 14. Ventilation
REPLACEMENT AND RESTORATION OF WORKABILITY of the internal ventilation system, including the fans themselves and their electric drives.

G. MDK 2-04.2004 "Methodological guide for the maintenance and repair of the housing stock" (approved by order of the USSR State Construction Committee in 2004):
“… 4.3.6. The housing maintenance organization must:
- maintain ventilation ducts and chimneys in a technically sound condition;

… 4.3.7. Works to eliminate defects of a construction nature, ELIMINATION OF DISTURBANCES OF CHANNEL DRIVE REVEALED DURING SCHEDULED INSPECTIONS, as well as Finishing work after installation or repair internal devices gas supply MUST BE PERFORMED BY A HOUSING SERVICE ORGANIZATION.

… 4.3.12. HOUSING MAINTENANCE ORGANIZATIONS ARE RESPONSIBLE for the technically sound condition of the ventilation ducts. It is not allowed during any work to eliminate ventilation ducts in kitchens and other rooms equipped with gas heaters. During Maintenance of the housing stock, they must ensure periodic checks of the suitability of ventilation ducts and chimneys for operation within the following periods:
... b) ventilation ducts of premises in which gas appliances are installed - at least twice a year (in winter and summer).
Repair of chimneys and ventilation ducts is allowed to be carried out by the personnel of the housing stock maintenance organization, who has the appropriate specialty and training, under the supervision of an engineering and technical worker.

… 4.3.13. Unauthorized repairs, modifications and extensions of chimneys and ventilation ducts are not allowed. Checking and cleaning of chimneys and ventilation ducts must be drawn up by ACTS. After each repair, chimneys and ventilation ducts are subject to inspection and cleaning, regardless of the previous inspection and cleaning, within the time limits established in the acts.

Annex 2
LIST OF WORKS INCLUDED IN PAYMENT FOR HOUSING REPAIR (maintenance)
… 14. Ventilation:
change of individual sections and elimination of leaks in ventilation ducts, shafts and chambers; ... "

“On approval of the list of national standards and codes of practice (parts of such standards and codes of practice), as a result of which, on a mandatory basis, compliance with the requirements of the Federal Law is ensured” Technical regulation on the safety of buildings and structures"

Federal Law No. 384-FZ of December 30, 2009“Technical regulation on the safety of buildings and structures”

Decree of the Government of the Russian Federation of February 16, 2008 N 87“On the composition of sections project documentation and requirements for their content”

GOST, SP (national standards, codes of practice)

Equipment for air conditioning and ventilation. Norms and methods for monitoring vibration resistance and vibration strength (introduced by the Decree of the State Standard of the Russian Federation of January 25, 2001 N 39-st)
Ventilation systems. Air filters. Types and basic parameters
(IEC 60079-16:1990). Interstate standard. Explosion-proof electrical equipment. Part 16. Forced ventilation to protect the premises in which analyzers are installed
SPDS. Execution rules working documentation heating, ventilation and air conditioning” (introduced by the Decree of the Gosstroy of the Russian Federation of May 20, 2003 N 39)
national standard Russian Federation. Ventilation in non-residential buildings. Technical requirements to ventilation and air conditioning systems (approved by Order of Rostekhregulirovaniya dated December 27, 2007 N 616-st)
Smoke protection equipment for buildings and structures. Fans. Fire test method
Buildings residential and public. Indoor microclimate parameters
GOST R EN 12238-2012 Ventilation of buildings. Air distribution devices. Aerodynamic testing and application evaluation for mixing ventilation
Interstate standard. Building ventilation. Air distribution devices. General specifications”(put into effect by the Order of Rosstandart dated 03/20/2014 N 206-st)
Building ventilation. Air distribution devices. Aerodynamic Testing and Application Evaluation for Displacement Ventilation
Air ducts. Fire resistance test method ()
Air ducts. Fire test method
Building structures. Test methods for fire resistance. Bearing and enclosing structures
Heating, ventilation and air conditioning. fire safety requirements
Heating, ventilation and air conditioning. Updated version of SNiP 41-01-2003 (approved by Order of the Ministry of Regional Development of Russia dated June 30, 2012 No. 279)
Public buildings and buildings. Updated version of SNiP 31-06-2009
Industrial buildings. Updated edition of SNiP 31-03-2001
Building climatology. Updated edition of SNiP 23-01-99

ABOK Documents

“Ensuring microclimate and energy saving in indoor swimming pools. Design standards»
ABOK recommendations 5.5.1-2012 "Calculation of parameters of smoke protection systems for residential and public buildings"
ABOK Recommendations 4.4–2013 “Water floor heating and cooling of residential, public and industrial buildings"
Standard ABOK-2-2004 “Orthodox churches. Heating, ventilation, air conditioning”
Standard NP "ABOK" "Heating and heating systems with gas and infrared emitters"
Reference book of NP “ABOK” “Humid air”
ABOK Standard “Conditional graphic symbols in projects of heating, ventilation, air conditioning and heat and cold supply”
Recommendations ABOK 7.3-2007 "Ventilation of hot shops of catering establishments"
ABOK standard 2.1-2008 “Residential and public buildings. Air exchange rates"
« Technical advice on the organization of air exchange in apartments of residential buildings "

The device and difference between chimneys and ventilation ducts

Despite the similarity and the possibility of an identical device, ventilation and chimney ducts differ in purpose and requirements for them. It is strictly forbidden to use channels for other purposes and change them!

A chimney is an air channel for removing combustion products from heating appliances. Sometimes its walls serve as heat exchangers (in furnaces, fireplaces). Coaxial chimneys(for turbocharged boilers) and the supply channels to the fireplaces also provide an inflow fresh air to keep burning.

Stainless steel chimneys

The ventilation duct is designed exclusively for the exchange of air masses in the room. Strict fire safety requirements are not imposed on it, only stable operation is required under a certain bandwidth.

Previously, almost all ventilation and chimney ducts were made of brick. Now the range of materials is much larger:

asbestos-cement and fiberglass pipes (unpopular due to low environmental friendliness);
concrete (such channels are laid during the casting of monolithic houses);
stainless molybdenum steel (used more often for gas appliances emitting during work a large number of steam and aggressive acids);
ceramic pipes (the most suitable material).

To prevent pollution, ingress of birds and precipitation, the channels are equipped with visors, caps, protective grilles. Often use deflectors that enhance traction.

Ventilation ducts with deflectors - installation

To determine the purpose and ownership of the channels, they are marked in accordance with the requirements of SNiP. On each channel at a height of 700-800 mm from the floor (in the attic) or 200-300 mm above the roof (with a combined roof), a triangle 50 mm high with the top facing down and the apartment number (in high-rise buildings) is applied. The colors used are:

black - for solid fuel heaters;
red - for gas combustion products;
blue along the contour - ventilation.

Inspection and maintenance of air channels

The cost and procedure for checking chimneys and ventilation ducts are strictly regulated and may vary depending on the region and the requirements of regulatory authorities.

The average price of this service is 50-1500 rubles, more detailed information can be found in gas services or organizations that control the operation furnace chimneys(almost always this is a structure at the Ministry of Emergencies). The contacts of official specialized enterprises for checking, repairing and cleaning these devices will also be prompted there.

Checking the ventilation duct from the room

Who and when checks ventilation and chimneys

A specialized organization that has the appropriate license, equipment and trained specialists has the right to inspect ventilation ducts and chimneys. At the same time, the customer (and payer) of the inspection for multi-apartment buildings is a representative of an enterprise that operates the housing stock or provides housing and communal services, and for a private (single-apartment) house - its owner.

The initial inspection is carried out in the presence of the customer before the connection and commissioning of the building or new equipment.

Subsequent checks are carried out:

before the beginning heating season;
for brick channels at least once every three months;
for channels made of other materials (steel, asbestos-cement and others) - at least once a year;
after each repair or reconstruction of chimneys and ventilation ducts.

Clogged ventilation duct

Besides, in winter time and at the onset severe frosts the heads of the outgoing channels are necessarily examined once a month for their icing and blockage.

In private single-family houses, repeated inspections and cleaning of ventilation ducts and chimneys are allowed by the owner of the dwelling. To obtain a permit for the production of this type of work, he must undergo training in a specialized organization, followed by a knowledge test.

Checking ventilation ducts and chimneys in an apartment building is carried out only by specialists. No work, modification or cleaning of these systems by tenants is permitted.

Inspection of the condition of channels in an apartment building

Video: Inspection of chimneys and ventilation ducts

Important! If violations and shortcomings are identified, the operation exhaust devices until the complete elimination of deficiencies is prohibited!

Documents to confirm the work performed

Specialists after carrying out any check are obliged to write out a special act with a hologram in two copies, certified by a seal. After signing, one copy of the act remains with the customer. The form of the form is regulated by the relevant regulations (in Russia, for example, according to Government Decree No. 1225 of December 30, 2011).

The following points must be defined in the act on the chimney.

The length of the channel, its size and location.
The material from which the chimney is made.
Connection points for heaters.
Constrictions, transitions, others design features disrupting normal operation.
Tightness and tightness of the structure.
The condition of the internal walls, the absence of blockages and blockages.
The presence and magnitude of traction.
Condition of channel heads, cutting seams (for brick channels).
The height of the head above the ridge, the presence of obstacles to the normal operation of the chimney, closely standing high-rise buildings.
The presence and condition of the caps, protective grilles and other devices.
At the request of the customer, a laboratory analysis of the air can be carried out for carbon dioxide contamination.

Completed act of technical condition in the Russian Federation

These documents may be requested by authorized representatives of the Ministry of Emergency Situations, gas service, housing inspection and others.

In the absence of acts on chimneys and ventilation ducts (as well as other violations: improper operation of heating appliances; gas appliances more than twenty years old, with missing or inoperative protective automation), regulatory organizations have the right to issue an order to prohibit the operation of housing, cut off gas supply lines.

Important! Violators in accordance with the law may be subject to administrative and even criminal liability!

Inspection and cleaning equipment

Previously, the inspection of chimneys and ventilation ducts was carried out visually or with the help of a lantern and a mirror. Now digital cameras with infrared or LED backlight, technical video endoscopes with signal transmission to the base device and even industrial robots(on responsible and complex objects). A thermal imager is used to determine leaky and thinned sections of chimneys.

Robots for checking and cleaning ventilation ducts

Inspection of chimneys and ventilation ducts is necessary in case of deterioration or complete absence of draft. Its presence can be checked by drawing the flame of a match or candle into the chimney. If a standard A4 sheet does not fall when you lean it against the ventilation grill, this is also a good indicator. But the most accurate values are obtained using a hydrometer - a device for measuring the speed of air flow, outwardly resembling a children's toy with a spinner-propeller and a dial.

It is necessary to clean the chimney and ventilation ducts in case of clogging, bad traction, the presence of a layer of soot and dirt more than 2 mm.

At the same time, both traditional scrapers, ruffs, weights, and specialized vacuum cleaners are used, which allow removing any deposits of not only vertical, but also horizontal sections of passages.

House chimney cleaning

By existing norms, the channel is conditionally considered clean if a weight with a diameter of 100 mm passes freely through it to the bottom of the device, where there is an inspection hatch. Blockages and blockages are broken through with this weight or a special chimney-cleaning projectile attached to a strong rope. If it is impossible to break through the blockage, determine its location and open outer wall channel.

For self-cleaning own house a special hard brush with a detachable handle is quite suitable, the length of which can be changed during operation. To facilitate the process, special chemicals loosening soot and deposits.

Device for ventilation and chimneys of apartment buildings

Ventilation ducts and chimneys in apartment buildings are diverse in design, execution methods and, ultimately, comfort and safety for residents.

Types of ventilation and smoke exhaust systems

The most common natural, supply and exhaust type of ventilation and chimneys. At the same time, through satellite channels, air or combustion products from the premises enter the common channel (or a collector in the attic), and then into the atmosphere. Air is taken in through natural gaps and leaks in windows and doors.

A more advanced and efficient solution is forced ventilation using exhaust and blower fans. There are hybrid projects combined with a supply and exhaust system, options with air recovery (a heat exchanger is a device that transfers heat from the exhaust air to the intake air).

Modern ventilation apartment building

The most productive and stable working is the design, in which the ventilation ducts from each apartment are taken out separately. This increases the stability of the system and prevents the flow of odors and gases into other apartments (for example, when one of the tenants installs a high-power exhaust fan).

Ventilation system design schemes

Features and nuances of service

Maintenance of smoke and ventilation ducts in apartment buildings is practically not required due to the thoughtfulness of the systems and the characteristics laid down with a margin. According to Soviet SNiPs through window and door blocks up to 80% of air exchange was carried out. Therefore, the main problem for old high-rise buildings is the replacement of such elements by residents with modern, practically airtight, metal-plastic and steel structures. At the same time, air exchange deteriorates sharply, dampness and fungus appear.

This problem is solved either by constant ventilation or by installing special supply valves.

They are mounted under the window above. heating devices for heating the air coming from the street. It is also recommended to leave gaps at the bottom interior doors or equip them with air-permeable grilles.

Supply valve in the apartment

Checking, repairing and cleaning ventilation ducts and chimneys is a troublesome and responsible business. Therefore, it is better not to risk the health and lives of loved ones and neighbors. Leave such work to professionals and just enjoy life in a cozy, warm home filled with fresh air.

Inspections of ventilation systems can be planned or emergency, caused by equipment breakdowns. Survey report ventilation system provides all the data on the efficiency of work and compliance of communications with settlement standards. For many institutions (for example, medical, clean shops and others), it is very important to maintain a certain microclimate that affects the course production process or people's well-being.

Poor ventilation and poor draft cause:

increase in humidity due to poor air exchange;
drop in the level of oxygen in the air;
development of conditions for the reproduction of pathogenic microorganisms;
deterioration in the well-being of staff and visitors, the development of various diseases.

Therefore, Rospotrebnadzor requires periodic, with mandatory drawing up of inspection reports.

If, as a result of the inspection, violations of the installation of the chimney are revealed, the certificate of inspection of the technical condition of the ventilation ducts may not be issued, and you will have to pay for the work performed.

Sanitary and epidemiological examination of ventilation

Survey report form (clickable)

According to SanPiN 2.1.3.2630-10 for medical institutions, control over the state of the ventilation system should be carried out by the management of the enterprise. Regular sanitary and epidemiological inspections of ventilation systems, followed by the preparation of an act, prevent the spread of pathogens of serious respiratory diseases. Inspections, according to the legislation, must be carried out at least once every 6 months, the ventilation inspection report is drawn up according to the established model.

In the course of sanitary and epidemiological inspections of the ventilation system, the following data are entered into the act:

about microclimate parameters;
on the results of the analysis of swabs from the inner walls of ventilation ducts.

The obtained indicators are compared with the requirements normative documents SniP 41-01-2003 "OVK". The act of inspection of ventilation contains recommendations for the normalization of operation or repair of the system. For more information about filling in the sample act of ventilation inspection.

Sample act filling hidden works(clickable)

The entire process of inspection of ventilation systems is regulated by the relevant regulations. Organizations entitled to such work receive a license from the Ministry of Emergency Situations of the Russian Federation. An act of inspection of the ventilation system is required by many city services. Therefore, the organization carrying out the work must issue to the client:

a copy of the license of the Ministry of Emergency Situations;
a copy of the certificate of the cleaner who did the work;
act of inspection of the ventilation system of the established sample.

Often, explanatory photographs are attached to the act of examining the ventilation system.

On the basis of the act, the "Journal of Disinfection and Cleaning of the Ventilation System" is filled out. Data from the act of inspection of ventilation ducts are used to draw up a schedule of disinfection and special treatments for ventilation and climate systems. The logbook is mandatory for organizations heated by gas boilers.

The act of inspection of the ventilation of an apartment building

One of the most common causes of deterioration air draft is the blockage of air ducts with construction debris, dust or its destruction. The cause can only be found if full study ventilation status.

During the inspection of ventilation systems in order to issue an act, the following activities are carried out:

search for blockages in ventilation ducts;
video inspection of all air ducts in order to detect redevelopment;
control over temperature, humidity, air speed and draft in ventilation ducts;
identifying and determining the effectiveness of fire forks;
examination of the status of exits ventilation pipes on the roofs of houses, the presence of trees or buildings affecting the wind backwater.

Inspection act

At the end of the work, an act of inspection of the ventilation system is filled out. For testing and verification are used:

hanging on a rope;
video camera and monitor for viewing the status of channels in real time;
thermal anemometers;
thermohygroanemometers.

Video control is very convenient, it allows you to detect debris and collapses, unauthorized redevelopment. Most often, this method of examining the condition of channels is used during litigation. From the camera, the image is fed directly to the computer monitor. The whole process is recorded and in the future its record can be used as a supporting document for the technical condition inspection report. Channels are explored in the direction from the chimney down, horizontal shafts through the viewing windows. The information obtained using the video is used when calculating the cost of repairs, fines or claims for improper laying of ventilation ducts.

Communication Survey

During the inspection of communications and filling out the act of inspection of ventilation, attention is paid to:

availability of passport and project documents;
implementation sanitary requirements and regulations;
compliance of the created structure with design data;
quality of installation and launch of the ventilation system;
efficiency of ventilation equipment;
cleaning, repairing and disinfection options internal surfaces air channels (presence of service doors);
contamination of air channels, fans with dust and other debris;
the quality of previous service work on disinfection and indicated in the samples of ventilation inspection reports;
the effectiveness of the air filters or ultraviolet air irradiators (if any).

Information on each item is entered in the act of inspection of the ventilation system.

Primary examination of natural ventilation

The primary examination of the natural ventilation system is carried out to calculate the pressure loss in the ventilation ducts and the air flow. It is carried out during the commissioning of the building. At the end of the work, an act is filled out on the initial examination of the natural ventilation system and the frequency of air exchange. The results of checking the condition of the entire system are entered into the act of examining the ventilation ducts. The operating parameters of which are regulated by GOST 12.3.018-79 "Methods". Exemplary acts of inspection of the technical condition of ventilation ducts guarantee high-quality air exchange in rooms on long years building operation.

How it is examined natural ventilation in a residential building and how to clean it will tell the video.

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