input inspection of products. General

Instead of GOST 24297-80

This standard establishes the basic provisions for organizing, conducting and formalizing the results of incoming control of raw materials, materials, semi-finished products and components (hereinafter referred to as products) used for the development, production, operation and repair of industrial products.

General provisions

1.1. The terms used in this standard are in accordance with GOST 16504 and GOST 15895 *.

1.2. Input control is carried out at enterprises (in associations) and organizations that develop and manufacture industrial products, as well as carry out their repair.

1.3. Input control is carried out in order to prevent the launch of products that do not meet the requirements of design and regulatory and technical documentation, supply contracts and permit protocols in accordance with GOST 2.124 (hereinafter referred to as the established requirements).

1.4. Input control is carried out according to the parameters (requirements) and methods established in the NTD for controlled products, contracts for its supply and authorization protocols.

1.5. The product range, controlled parameters (requirements), the type of control and the sample or sample size are determined based on the stability of the quality of the suppliers' products, the degree of development of new types of products, the importance of this parameter (requirement) for the functioning of the manufactured products, and are set in the list of products subject to input control.

1.6. The sections of the list are developing:

1) design services of the enterprise - for products intended for assembly;

2) technological services of the enterprise - for raw materials, materials and semi-finished products.

1.7. The lists of products subject to incoming control are coordinated with the technical control department (QCD), the metrological service, as well as with the State acceptance and (or) representative office of the customer ** and approve:

1) the chief designer of the enterprise-developer - when developing prototypes of products;

2) the chief engineer of the consumer enterprise - during production and repair.

1.8. The list of products subject to incoming control must contain:

1) name, brand (drawing number) and type of controlled products;

2) designation of the NTD, the requirements of which the products must comply with (details of the supply contract or the permit protocol);

3) controlled parameters (requirements) or clauses of the NTD (agreement, permit protocol) in which they are established;

4) type of control, sample or sample size, control standards, permitting rules;

5) measuring instruments or their technical characteristics;

6) warranty period;

7) instructions on marking (branding) of products based on the results of incoming control;

8) allowable resource consumption during input control (resource consumption should be minimal).

If necessary, the list may include requirements or instructions reflecting the features of the product.

1.9. The input control of products is set to continuous or selective. When establishing selective control, control plans and acceptance rules must comply with those established in the technical documentation for products.

Note. For electrical radio products with the "OS" index, complete input control is mandatory.

1.10. If necessary, the consumer can conduct additional product checks that are not provided for by the established requirements. The scope and methods of checks are agreed between the consumer and the supplier, as well as with the State Acceptance and (or) the representative office of the customer.

During the input control, it is allowed to train components in the conditions and modes provided for by the NTD, while the list of products subject to input control should contain appropriate instructions.

1.11. Technological documentation for the input control processes according to R 50-609-40 is developed by the technological services of the enterprise in agreement with the Quality Control Department, as well as with the State Acceptance and (or) representative office of the customer and is approved by the chief engineer of the enterprise.

1.12. The decision to tighten, weaken or cancel the input control is made by the consumer in agreement with the State Acceptance Committee and the representative office of the customer based on the results of the input control for the previous period or the results of operation (consumption) of products.

Organization of input control

2.1. Input control is carried out by the input control unit, which is part of the technical control service of the enterprise (association).

2.2. The main tasks of incoming control are:

1) checking the availability of accompanying documentation for products, certifying the quality and completeness of products;

2) control of compliance of the quality and completeness of products with the requirements of design and regulatory and technical documentation and its application in accordance with the permit protocols;

3) the accumulation of statistical data on the actual level of quality of the products obtained and the development on this basis of proposals for improving the quality and, if necessary, revising the requirements of scientific and technical documentation for products;

4) periodic monitoring of compliance with the rules and terms of storage of products of suppliers.

2.3. Input control must be carried out in a specially designated room (section), equipped with the necessary means of control, testing and office equipment, as well as meeting the requirements of labor safety.

Workplaces and personnel performing incoming control must be certified in the prescribed manner.

Measuring instruments and test equipment used in the input control are selected in accordance with the requirements of the NTD for controlled products and GOST 8.002 ***. If the metrological means and methods of control differ from those specified in the NTD, then the consumer coordinates the technical characteristics of the means used and the methods of control with the supplier, the State Acceptance Committee and (or) the representative office of the customer.

To carry out tests, checks and analyzes related to incoming control, products can be transferred to other divisions of the enterprise (laboratories, control and testing stations, etc.).

Similar information.

The article will reveal the main points regarding the act of input control. What is the document, for what purposes is it intended, and how to draw it up correctly - further.

In the construction industry, input control of equipment plays a significant role. This is a quality check of objects that arrive at the warehouse. The results of the inspection are documented. How to compose it correctly?

Basic moments

When the organization receives equipment or material, an act is drawn up. This is an accompanying sheet on the basis of which the equipment is put into use.

The data of all acts are displayed in the journal, which must be present on any construction site. The document indicates the name and number of objects received at the construction site.

Input control is continuous, selective and continuous. During continuous production, each unit of production is subjected to control in order to identify and decide on the possibility of use and release.

Appointed when the products are piece by piece. During sampling, several units are removed from a batch of products and checked.

Based on the results, a conclusion is made about the quality of the entire batch. It is not allowed to carry out this type until the product is fully completed in the batch.

During continuous inspection, each unit is checked in the sequence in which it was made. and the consumer must agree on a schedule for the inspection.

The following persons are entitled to control:

Information about acts should be displayed in the journal. The document indicates the name of the material, quantity, documentation numbers and supplier information.

Supporting documentation may include:

• list of equipment;
• operating documents;
• other.

If the accompanying documents are not provided in full, the commission has the right to postpone the input control.

Upon receipt of new materials, it is necessary to ensure their separate storage from those that have already passed the input control.

In the event of a marriage, it is necessary to describe each defect in the act. The forms of input control are:

What it is

Incoming control is the quality control of the goods that arrived at the customer for the purpose of its use. It is drawn up and approved within 3 days after the input control.

The document is signed by all members of the commission. The essence of control is to obtain information about the state of the object and compare it with the requirements of regulations.

Based on the results of the control, a conclusion is drawn up - whether the products meet the requirements, is filled out.

In the accompanying documentation of the material, a mark is made on the control, its results and marking is put. If the product meets the requirements, it is transferred to production. The defective material is sent to the supplier.

Functions performed

Incoming control is an important part of the technological process, ensuring the stable operation of the organization and the high quality of manufactured products.

The tasks of input control are as follows:

Legal framework

Sample certificate of input control of equipment and materials

It is carried out in several stages - external inspection and quality control.

The order of the procedure

First, a control plan needs to be developed and agreed upon. In the methodology, clarify the verification methods, sequence of actions, parameters, etc.

After that, set the date and place of the input control, create a commission. It may include representatives of the supplier and the customer, an independent expert.

• acceptance by the number of products in the batch;
• acceptance of documents for these products;
• visual inspection, checking the completeness of the batch (carried out by opening the package);
• verification of quality characteristics, parameters.

During the control it is necessary:

• check the accompanying documentation, which certifies the quality of products, and register it in the register of the results of incoming control;
• control sampling, check packaging, labeling;
• check product quality.

During the acceptance of the cargo, the safety of the cargo during transportation is checked. Namely:

• checking the presence of the sender's seal on the vehicle - whether it is in good order, whether there are prints, what condition the wagon is in, etc.;
• verification of compliance with the rules of transportation.

Drawing up a form

The document is compiled by receiving specialists - an engineer, a site foreman, a head of a department. In order to avoid claims to the content of the act, a special commission (of two or more persons) is involved in its execution.

With their signature, they confirm the data of the act. Before drawing up a document, the equipment must be checked or tested.

After successfully passing the control, the authorized person fills out the act, fixing the conformity of the products to the requirements.

If the control has not passed, the bark must be recorded in the act, and the claim must be sent to the supplier. The further action is as follows - the product is returned, the supplier repairs or exchanges for the same, without marriage.

Fill example

The act contains the following information:

• members of the commission;
• the name of the equipment or material and its data;
• the name of the documentation that certifies the quality;
• designation of conditions and technical standard;
• technological code of the equipment;
• classification of materials;
• weight, number of pieces;
• the name of the supplier's company;
• agreement;
• manufacturer's name;
• date of manufacture.

Features when generating a document

There is no standard form for the act. It can be made in any form or use a template developed by the organization. You can use an A4 sheet.

The following data are required to be filled in:

• the fact of control;
• date and place of the event;
• totals;
• complete information about the tested equipment.

Issued in one copy.

For cable products

Input control of cable products is carried out according to the procedure established at the enterprise, as well as in accordance with GOST. An order is created on the basis of which a commission is formed.

It includes the general contractor, the customer and the organization performing the work. The following cable products are submitted for incoming inspection:

The first stage of control includes the identification of cable products in the warehouse, control of the correctness of filling in the documentation.

It also checks:

• compliance of the marking on the plastic shell, tag or drum with the data indicated in the accompanying documents;
• the availability and quality of the required documentation;
• the presence of a nameplate.

The second stage is to check the packaging and labeling of cable products:

The last stage includes checking the condition of the protective covers of cable products. The presence of defects, the general condition of the cable is checked.

Based on the results of the input control, the commission draws up a conclusion - whether the cable products meet the requirements. Unsuitable materials must be marked and work with them should be suspended.

Nuances in construction

When the materials enter the warehouse, information is sent in order to conduct an incoming control. The quality of construction is the compliance of the quality of the constructed structures with legal standards.

Input control is carried out until the use of construction equipment in the activity. It includes checking the availability of supplier documentation, delivery data, compliance with documentation requirements.

The contractor is in charge. He can carry out control on his own or seek help from a special organization.

If the results of the control are unsatisfactory (the equipment does not meet the requirements), it cannot be used in construction.

The objects of control include construction products, the process of their creation, operation, storage, etc. Control is carried out in order to identify deviations at the initial stage of production work.

If the commission has any comments, a re-inspection may be scheduled. The decision to conduct it should be reflected in the act of incoming control of building materials.

The document must indicate "Pass" or "Not good". There are requirements for the execution of the act:

• indicate the compliance or non-compliance of building materials with the requirements of regulatory documentation;
• fill in each line, dashes should be absent;
• can be formatted in tabular or text form;
• must be signed by members of the commission.

It is necessary to register the act in a special journal. When the materials of the customer are used in construction, they are called tolling.

If they are transferred from one organization to another, they must continue to be recorded. Unused materials are transferred to the customer under the act.

fire alarm

The fire alarm may be put into service if the test establishes the following:

• installation was carried out in accordance with the requirements;
• the working state of the alarm is positive;
• design documentation is correct.

Input control includes checking the activity of system nodes, receiving and issuing a signal. You can use the alarm only if there is an appropriate act. It is filled in by the head of the organization.

Reinforced concrete structures

During the quality control check the following:

• whether the shape and dimensions correspond to the requirements of the technical conditions;
• are there any cracks, chips, spots;
• Are the holes correctly positioned?
• Are the wires correctly positioned?

Control is carried out by creating and testing control samples. The main method is the compression test. Make a sample for concrete mix (for each grade).

If it cures naturally, the batch should contain several samples. In the case of heat treatment of samples, it should be at least 9. The first test is carried out 4 hours after treatment.

If the deviation is more than 20%, then it is necessary to establish the cause of this and eliminate it. The second test is carried out before the products are shipped and the 3rd test is carried out after a month's storage.

Thus, the input control involves checking the quality of materials and equipment. It can be carried out at any stage - at the beginning of the operational period or during use.

The commission controls. It is appointed by order, it consists of authorized persons with the appropriate qualifications.

The results are documented. It indicates whether the product meets the requirements. The form of the act is not regulated, it can be drawn up independently.

These recommendations establish the main provisions for organizing, conducting and formalizing the results of incoming control of raw materials, materials, Semi-finished products, components, etc., coming from suppliers to the consumer.
The recommendations have been developed to provide methodological and practical assistance to enterprise specialists in the implementation and use of a product quality management system based on the application of international standards MS ISO 9000 series. The recommendations reveal possible approaches to the implementation of GOST 40.9001-88, clause 4.20 and GOST 24297.
The recommendations can be used in enterprises of any industry, as well as in the certification of products, quality systems and accreditation of testing laboratories.

Designation:	50-601-40-93
Russian name:	Recommendations. Input control of products. Key points
Status:	current (Developed for the first time)
Text update date:	01.10.2008
Date added to database:	01.02.2009
Date of entry into force:	05.10.1993
Designed by:	VNIIS Gosstandart of Russia
Approved:	VNIIS Gosstandart of Russia (05.10.1993)
Published:	VNIIS Gosstandart of Russia No. 1993

ALL-RUSSIAN RESEARCH INSTITUTE OF CERTIFICATION (VNIIS) OF THE STATE STANDARD OF RUSSIA

R 50-601-40-93

R 50-601-40-93

These recommendations establish the basic provisions for the organization, conduct and execution of the results of the input control of raw materials, materials, Semi-finished products, components, etc. (hereinafter referred to as products) coming from suppliers to the consumer.

The recommendations were developed to provide methodological and practical assistance to enterprise specialists in the implementation and use of a product quality management system based on the application of international standards MS ISO 9000 series. The recommendations reveal possible approaches to the implementation of GOST 40.9001-88, clause 4.20 and GOST 24297.

Terms and definitions according to MS ISO 8402-1;

GOST15895,

GOST16504,

GOST15467.

1. GENERAL PROVISIONS

1.1. Under the input control should be understood

Quality control of the supplier's products received by the consumer or customer and intended for use in the manufacture, repair or operation of the product.

1.2. The main tasks of the input control can be:

Obtaining, with high reliability, an assessment of the quality of products presented for control;

Ensuring the unambiguity of mutual recognition of the results of product quality assessment by the supplier and the consumer, carried out according to the same methods and according to the same control plans;

Establishing compliance of product quality with established requirements in order to timely submit claims to suppliers, as well as for operational work with suppliers to ensure the required level of product quality;

Prevention of launching into production or repair of products that do not meet the established requirements, as well as permission protocols in accordance with GOST 2.124.

1.3. The decision on the need to introduce, tighten, weaken or cancel the input control is made by the consumer based on the features, nature and purpose of the product or the results of the input control of the product for the past period or the results of its operation (consumption).

4.1.1. With complete control, each unit of product in the controlled lot is subjected to control in order to identify defective units of production and make a decision on the suitability of the product for launch into production. Continuous control is recommended to appoint in cases where it is technically and economically feasible and the products are piece. The use of continuous control should be indicated in the technical documentation for products in the sections "Acceptance". With continuous control, it can be presented as a fully formed batch of products, as well as individual units of products for single and small-scale production.

4.1.2. In the course of random control, samples (samples) are taken randomly from the controlled batch of products in accordance with the sampling plan, based on the results of the control, a decision is made on the entire controlled batch of products.

In case of random control, only a fully formed batch of products (both piece and shapeless) can be presented for control.

Note . It is not allowed to take samples or samples until a fully formed batch of products is presented.

Rules for selecting units of production in the sample - according to GOST 18321.

4.1.3. With continuous control, each unit of production is subjected to control in the sequence in which they are produced until the number of suitable units of production established by the control plan is obtained. After that, continuous control is terminated and transferred to selective (piece products).

4.2. Sampling plans should be agreed between the supplier and the consumer and established in strict accordance with the requirements of state standards or ISO standards for statistical acceptance control.

4.2.1. When assigning input control plans by alternative feature, GOST 18242, GOST 16493, GOST 24660 or MS ISO 2859/0÷3 should be used.

4.2.2. When assigning incoming control plans by quantitative characteristics, GOST 20736 or MS ISO 3951 should be used.

4.2.3. When assigning continuous input control plans, ST SEV293-76 should be used.

4.2.4. Instructions for the provision and selection of the method and sampling plans are set out in RD 50-605, R 50-110, R50-601-32.

4.3. It is recommended to make a decision on the conformity or non-compliance of the product quality with the established requirements for each controlled batch separately.

4.4. When agreeing and establishing incoming inspection plans (if these plans are not established in the technical documentation for products), the supplier and the consumer may determine the procedure for indemnification from defective or incomplete products if this is discovered by the consumer during the incoming inspection or in the production process.

4.5. When re-presenting products for incoming inspection, it is recommended to indicate in the accompanying documentation the reasons why it was rejected (or returned to the supplier) at the first presentation, so that the inspector pays special attention to the characteristics due to which it was rejected (or returned supplier).

Sampling plans for re-submission of products for input inspection should be the same as for the first presentation (rather than resorting to the rule of "doubling the sample or sample size") in the case of using two-stage plans.

4.6. In practice, situations often arise when it is important not only to decide whether to accept or reject a batch of products, but also to know its actual level of defectiveness, since the level of defectiveness characterizes the quality of a batch of products. The lower the level of defectiveness in the batch, the higher its quality.

The level of defectiveness can be expressed as the percentage of defective units of products, determined from the ratio:

The number of defects per hundred units of production, determined from the ratio:

The first ratio is recommended to be used when it is sufficient to establish only the number of defective units of products from the number of controlled ones. In this case, a unit of production is considered defective if it has at least one defect.

The second ratio is recommended when it is important to establish the number of defects in the inspected product units, if there can be one or more defects in a product unit. In this case, each individual non-compliance of the product with the established requirements should be considered a defect.

4.6.1. Defectiveness level can be input and output. It is important for the consumer to know the input defectiveness level, which is understood as the defectiveness level in a batch or product stream entering the control for a certain time interval.

4.6.2. A more reliable idea of ​​the quality of products will be given by the average input defect level, determined by the results of the control of several batches.

The average input defectiveness level characterizes the quality of the supplied products and is determined by the technical capabilities of production and does not depend on the adopted control plan.

The value of the average input defectiveness level can be obtained from the results of continuous or selective control of several batches of products entering for control according to the formulas given in clause 4.6.

4.6.3. The value of the average input defectiveness level can be used as an initial value to justify and select the acceptance level of defectiveness ( AQL).

AQL represents such a value of the defectiveness level, which both the supplier and the consumer agree on and which serves as the basis for determining the control standard for selective incoming inspection plans.

4.6.4. The value of the average input defectiveness level must be less than AQL ,.Therefore, the supplier must ensure that the average input defect level does not exceed the specified value AQL . With an increase in the average input level of defectiveness, the supplier will incur losses from the return and rejection of products. AQL determines the degree of severity (rigidity) of selective control.

5. REGISTRATION OF THE RESULTS OF INPUT CONTROL

5.1. Based on the results of the input control, it is recommended to draw up a conclusion on the conformity of the products to the established requirements and fill out the log of the results of the input control ().

5.2. The data of the protocol of control, analysis or testing, the controller must carefully compare with the technical documentation for the products and in the accompanying documents for the products make a note about the input control and its results, mark (brand) the products, if this is provided for in the list of products subject to input control.

5.3. If the product complies with the established requirements, the incoming control division makes a decision to transfer it to production.

When a marriage or incompleteness of the delivery of products is detected, the incoming control unit draws up an act for marriage or incompleteness of the delivery ().

5.4. Having received a complaint report, the supplier enterprise conducts the necessary studies of the reasons for non-compliance of products with the requirements of regulatory and technical documentation, coordinates with the consumer and sends the consumer a research report indicating the measures taken to eliminate the causes noted in the complaint with a conclusion on the effectiveness of the measures taken.

5.5. The quality control department must systematically inform the supplier about the results of the input control.

The supplier, in agreement with the consumer, develops and implements measures aimed at improving product quality.

5.6. Based on the data on the actual level of quality of the supplied products, accumulated by the incoming inspection department, OGK, OGT, OMTS, etc., the Quality Control Department makes proposals in accordance with the established procedure to improve its quality level and, if necessary, revise the regulatory and technical documentation.

Proposals-applications for the revision of the normative and technical documentation of the valley should be marked: "according to the results of input control."

5.7. In case of rejection of products in the supplier’s workshop (hidden defect), a defective act () is drawn up, according to which the products are sent to the reject isolation ward along with defective acts signed by the workshop managers and the foreman of the input control unit.

5.8. Responsibility for a defect arising from products during the production of a failed external acceptance or a rejected quality control department is borne by employees, warehouses, who gave the order to release these products into production.

5.9. Based on the results of the input control, the consumer, if necessary, informs the territorial body of the Gosstandart of Russia at the location of the supplier to take measures in accordance with the functions assigned to them, if the products do not meet the established requirements (Appendix 2, GOST 24297).

Appendix 1
THE FORM OF THE JOURNAL OF RECORDING THE RESULTS OF INPUTS CONTROL

FOR _________QUARTER 19____

Application2
FORM OF THE SAMPLING OR SAMPLING REPORT

ACT No.
on sampling (sampling)

This act was drawn up "___" _______ 19____.

Admissions Committee consisting of:

representative
		(position of representative)
comrade
	(surname)			(signature)
representative
		(name of supplier)
(position of representative)
comrade
	(surname)			(signature)
From products
			(Name of production)

received "___" ___________19___ invoice No. ___________ dated "___" _______ 199___ according to the bill of lading No. ________ dated "___" _______ 199__ in the number of ______ places with weight of products ___________ samples were taken in the amount of _____________

from "_____"______19__

Samples are (not) provided with labels containing the data required by the standards or specifications.

For carrying out (analysis) testing, additional samples were taken from the products in the amount of ________________

The samples were submitted for analysis (testing) "___" _________ 19____.

ACT No. _______ of _________ 199

FOR REJECTION OF PRODUCTS AS DELIVERED

2. Acceptance of products started at ______ hours ______ minutes _________ 199

finished _________ hours _______ minutes ______________________ 199

3. Terms of acceptance are violated due to

	(give reasons)
No. p/p	Surname, I.O.	Place of work	Position held	Date and number of the document of authority	Acquaintance with the instruction (signature)

6. Date and number of the telephone message and telegram about the call of the manufacturer's representative

7. Number and date of the contract for the supply of products
invoices						Bill of lading
8. Date of arrival of products at the destination station
9. Delivery time of products to the consumer

10. Terms of storage of products in the warehouse of the recipient of its additional acceptance

11. The state of containers and packaging at the time of product inspection
12. Date of opening of containers and packaging

13. When randomly checking products ____________, the procedure for selecting products for random checking, indicating the basis for random checking (GOST, TU, basic delivery conditions, contract)

The presence or absence of packaging labels and seals in separate places

16. Shortcomings in the quality of products, the nature of the shortcomings, and for complete products, the quantity of such products and the list of missing parts, assemblies, parts and their cost

17. Products								presented for examination at the
	Name
Product distribution:		The marriage is over.
		Suitable
		To be corrected.
		Does not match. grade.
		Not a kit.

18. Numbers of GOSTs, TUs, drawings, samples (standards), which were used to check the quality of products

20. Conclusion on the nature of the identified defects in the products and the reasons for their occurrence

3. Name and address of the manufacturer
supplier
4. Nomenclature and volume of products
5. Date and number of the telephone message and telegram about the call of the manufacturer's representative
6. Number and date of the contract for the supply of products
invoices							Bill of lading
and a document certifying the quality of products
7. Conditions for storing products in the recipient's warehouse until acceptance

8. When randomly checking products __________, the procedure for selecting products for testing, indicating the basis for random testing (GOST, TU, special delivery conditions, contract)

9. Where and when sent for research
10. Shortcomings in product quality, nature of shortcomings

11. Numbers of GOSTs, TUs, drawings, samples (standards), which were used to check the quality of products

13. Other data; which, in the opinion of the persons involved s acceptance must be indicated in the act to confirm the poor quality or incompleteness of the products

Department of the chief metrologist

CZL	Central factory laboratory
NTD	Normative and technical documentation
OMTS	Logistics Department
A QL	Acceptance level of defects

INFORMATION DATA

1. DEVELOPED by the All-Russian Research Institute of Certification (VNIIS)

PERFORMERS: Bogatyrev A.A., Ph.D. in Economics (head of the theme), Gorshkova E.A.

2. APPROVED by Order of the Institute No. 119 of. 5.10.93

3.DESIGNED FIRST

4.REFERENCE REGULATIONS AND TECHNICAL DOCUMENTS

	Item number, sub-item of enumeration
GOST 15895 GOST 16504 GOST 15467 MS ISO 8402-1 GOST 24297 GOST 18242 GOST 20736 GOST 18321 GOST 16493 ST SEV 293 MS ISO 2859/0÷3

Quality control of products at enterprises is carried out by the technical control department (QCD).

Product quality control is divided into three types: input, interoperational and output (acceptance).

Input control- checking the quality of raw materials and auxiliary materials entering production. Constant analysis of the quality of supplied raw materials and materials allows you to influence the production of supplier enterprises, achieving quality improvement.

Interoperational control covers the entire technological process. This control is sometimes called technological, or current. The purpose of interoperational control is to verify compliance with technological regimes, rules for storage and packaging of products between operations.

Output (acceptance) control- quality control of finished products. The purpose of the output control is to establish the conformity of the quality of finished products with the requirements of standards or specifications, to identify possible defects. If all conditions are met, delivery of products is allowed.

QCD also checks the quality of packaging and the correct labeling of finished products.

Input, interoperational and output control can be selective, continuous and statistical.

Selective- control of a part of the product, the results of the verification of which apply to the entire batch.

continuous All products are subjected to control (with an undeveloped technological regime).

Statistical control is preventive. It is carried out throughout the technological process in order to prevent the occurrence of marriage.

A conditional measure of the quality of goods is their grade.

Variety- this is a qualitative gradation of goods according to one or more indicators established by regulatory documentation.

During acceptance quality control, products are divided into grades indicated by numbers (1, 2, 3, etc.) or words (highest, selected, extra, etc.). Some goods (complex-technical, furniture, plastic products, etc.) are not divided into grades, but are distinguished as suitable and unsuitable.

Gradation of goods by varieties is carried out according to defects appearance, less often by deviations from other properties. All appearance defects are divided into acceptable and unacceptable. Products with unacceptable defects are rejected.

Defects that determine the grade of the product are divided according to the following criteria: origin, size and location, the possibility of detection, the possibility of correction, and the degree of significance.

By origin - defects in raw materials, technological, arising during storage and transportation.

By size and location - defects are small, large; local, common.

If possible, defects are visible (obvious) and hidden.

If possible, corrections - defects are correctable and irreparable.

According to the degree of significance - defects are critical, significant and insignificant.

If there are critical defects, the use of goods is impossible or unacceptable.

The degree of deterioration in the quality of the goods depends on the significance, size, location and number of defects.

The number, size and location of permissible defects are specified in the standards.

Determination of a grade is carried out on points and restrictive systems. The grade of the product is set at the industrial enterprise by quality control controllers. The higher the grade, the higher the quality of the product.

With a point system, each defect or deviation from the nominal value of the property indicator is evaluated with a certain number of points, taking into account their significance and size. The grade is determined by the sum of points.

With a restrictive system, for each variety, a list of permissible defects, their number, size, location is established.

In case of discrepancy with the standards for a given grade by type, quantity and location of defects, the goods are transferred to a lower grade or marriage.

Non-compliance of the goods with the standards for at least one defect or deviation gives grounds for transferring it to a lower grade or marriage.

Quality Assurance in Product Inspection and Testing

The purpose of establishing quality protection systems is to protect the consumer from the inadvertent receipt of non-conforming products and to avoid unnecessary costs associated with the rework of such products. Actions on nonconforming products should be identified and documented.

The control- an activity involving the measurement, examination, testing or evaluation of one or more characteristics of an object and comparing the results obtained with specified requirements to determine whether compliance has been achieved for each of these characteristics.

An important role for the production of high-quality goods and quality management is the quality control of goods.

Goods quality control is a procedure for checking the compliance of their quality indicators with the requirements of regulatory and technical documentation and supply contracts. The main task of quality control is to identify product defects, which include each individual non-compliance of the goods with the established requirements. At the same time, product defects can be detected both during organoleptic and measurement control; and can only be detected during operation.

Depending on the ability to detect defects can be obvious and hidden.

Manifest product defect- a defect, for the detection of which in the regulatory documentation, mandatory for this type of control, there are appropriate rules, methods and means. Many obvious defects are already detected during visual inspection of products.

Hidden product defect- a defect, for the detection of which the relevant rules, methods and means are not provided in the regulatory documentation, mandatory for this type of control. Hidden defects are discovered during the operation of the product (product).

By origin, defects can be manufacturing and non-manufacturing.

Manufacturing defect arises in the course of production of the goods, because of infringement of a technological mode of production of a product.

Non-manufacturing defect occurs after the completion of the production process of goods - during transportation, storage, sale, operation or. consumption.

If possible, defects are divided into removable and unrecoverable.

Removable Defects- Defects, the elimination of which is technically possible and economically feasible.

Fatal Defects- defects, the elimination of which is technically impossible and (or) economically inexpedient.

When studying defects, it is necessary to determine its significance - a relative value determined by the type, size, location of the defect and characterized by the degree of its influence on the quality level of the goods in comparison with other defects. Depending on the degree of impact on quality, defects can be: critical, significant, insignificant.

Critical Defect- a defect, in the presence of which the use of the goods for its intended purpose is practically impossible or unacceptable.

Major product defects significantly affect the possibility of using the product for its intended purpose, its quality and duration of operation.

Minor (minor) defects do not significantly affect the use of the product for its intended purpose and its durability.

In the process of continuous or selective quality control of products, good products and defects are detected.

Yearly production- a product that meets all the established requirements.

Marriage- products, the transfer of which to the consumer is not allowed due to the presence of defects that are not allowed by regulatory documents.

It must be remembered that for some groups and types of products it is provided sort division. It depends on the presence of defects and deviations in some indicators of consumer properties.

The procedure for establishing varieties:

1) varieties are set according to a point or restrictive system. The most common is the scoring system, in which the regulatory documents for each from varieties limit the type of defects, their number, size, location on the product;

2) with a scoring system, deviations from the norm of the standard in terms of controlled indicators and defect parameters are evaluated in conventional units - points;

3) by comparing the amount of points acquired by the product during the control, with the regulatory requirements of the standards, which provide for the allowable amount of points for each grade, the product is assigned to one or another grade.

But in recent years there has been a tendency to reduce the number of varieties or even to refuse to divide goods into varieties.

There is the following classification of types of control:

For control purposes:

■ product control;

■ process control.

According to the stage of the production process:

■ input control;

■ control of transportation;

■ operational control;

■ acceptance control (control of finished products);

■ storage control.

The nature:

■ supervisory control;

■ flying control.

Decisions made:

■ active control;

■ passive control.

By product coverage:

■ complete control;

■ selective control.

If possible, further use of products:

■ destructive control;

■ non-destructive testing.

By means of control:

■ visual control;

■ organoleptic control;

■ instrumental control.

In general, quality control should confirm the fulfillment of specified product requirements. It includes:

■ input control. It is used to ensure the quality of purchased materials, components and assemblies that enter the manufacturing enterprise. Input control depends on the information coming from the subcontractor and their impact on costs.

■ intermediate (operational) control. It is carried out at certain points in the production process to confirm compliance. The locations of the reviews and their frequency depend on the significance of the characteristics and the convenience of the verification during the implementation of the process. There are the following types of checks: automatic control or automatic tests; checking the installation

(and the first sample; control checks or tests carried out by the machine operator; control at established points of the technological process at certain intervals; periodic control of specific operations carried out by special controllers.

■ acceptance control. Such control is the final step summing up the entire production process. It can be used to evaluate the effectiveness of the quality system in place at the enterprise. It is he who has the most complete information to improve the quality management system at the enterprise. In this case, two forms of verification of finished products can be used, which can be used both together and separately:

a) acceptance control or acceptance testing to confirm that the finished product meets the specified requirements. Reference can be made to the purchase order to verify that the type and quantity of the item being delivered matches. These include continuous control of all units of goods, random control of batches of goods and continuous selective control;

b) checking the quality of the goods, carried out on sample units representative of completed lots, on a continuous or periodic basis.

In general, acceptance control and product quality testing can be used to provide operational feedback for corrective action on products, a process, or a quality system. Goods that do not meet the established requirements must be recorded and analyzed, imported or analyzed, repaired, accepted with or without a permit for derogation from the requirements, altered, re-sorted or scrapped. Repaired and/or remanufactured goods must be re-inspected or re-tested.

■ product shipping authorization, inspection and test reports (data logging). Products can only be shipped after all work specified in the quality program or documented procedures has been successfully completed and the relevant information and documentation has been received and formally approved.

Management of control and measuring equipment. To achieve confidence in the correctness of the decisions made or actions based on the results of measurements, it is required to maintain continuous control of all measurement systems used in the development, production, installation and maintenance of products. Measuring instruments, sensors, special test equipment and the necessary software for testing are subject to management. Also, it is recommended, as necessary, to extend control procedures to technological equipment, various devices that may affect the specified characteristics of the product or process. Need to develop documented procedures to manage and maintain the measurement process itself in a state of statistical regulation, including equipment, methodology and professional training of operators. Documented procedures require the use of appropriate instrumentation and test equipment, including test software, to ensure that accurate measurement uncertainty data is obtained, which must be consistent with the required measurement capabilities. Appropriate measures must be taken when the accuracy of the equipment does not allow adequate measurement of process and product characteristics.

In doing so, attention should be paid to the following points:

■ set parameters for range, accuracy, convergence, and stability under given environmental conditions;

■ conduct an initial test prior to initial use to assess the required accuracy;

■ provide periodic returns for adjustment, repair and re-verification, taking into account

the manufacturer's technical requirements, the results of the previous verification, the order and intensity of use in order to ensure the necessary accuracy during operation; “to carry out documentary confirmation of the unambiguity of the designation of measuring instruments, the frequency of re-verification, the state of affairs with the verification and the procedure for recall, transportation, conservation and storage, adjustment, repair, verification, installation and operation;

■ link measuring instruments to reference standards of known accuracy and stability, preferably nationally and internationally recognized standards; in the absence of such standards, it is necessary to document the basis for verification.

■ evaluate the software and control procedures for automated test equipment.

Verification of measuring instruments is a set of operations performed by the bodies of the State Metrological Service or other accredited organizations in order to determine and confirm the compliance of measuring instruments with established technical requirements.

The Law of the Russian Federation "On Ensuring the Uniformity of Measurements" introduced the term "calibration of measuring instruments". Calibration of measuring instruments is a set of operations performed to determine and confirm the actual values ​​of metrological characteristics and (or) suitability for use of a measuring instrument that is not subject to state metrological control and supervision. Only those measuring instruments that are not subject to state metrological control and supervision, i.e. verification, are subject to calibration. Verification is a mandatory operation that is performed by the bodies of the state metrological service, and calibration is performed by any metrological service or an individual who has all the necessary conditions for this activity. Calibration is an additional function that is performed either by the metrological service of the enterprise, or at its request by any other organization capable of performing the work.

Management of nonconforming products. Such activities are carried out in order to protect the consumer from the inadvertent receipt of products that do not meet specified requirements, and to avoid unnecessary costs associated with the rework of such products. Dealing with nonconforming products should be defined and documented in procedures. These actions typically include:

■ Identification. This is a process whereby units or batches of products suspected of non-compliance with specified requirements must be immediately identified and their occurrence recorded. Where necessary, facilities should be provided for

inspection or re-examination of previous batches.

■ isolation. The process by which non-conforming products are isolated from conforming products and appropriately identified to avoid further unintended use before a decision is made to dispose of them.

■ Product return. Sometimes it may be necessary to return finished products that are in the finished goods warehouse, on their way to distribution organizations, in warehouses or already in operation. Return decisions are based on safety considerations, product legal liability and consumer satisfaction. But, having ended with the disposal of identified non-conforming products, the quality management process would look, at least, incomplete. All identified discrepancies, after systematization and careful analysis, should become a solid information base for the development of measures to reduce the level of defective products to a minimum. Therefore, the development of corrective and preventive measures is an essential element of quality management.

■ Survey. Nonconforming product shall be examined by specially designated personnel to determine whether it can be accepted with or without repair, if a waiver is granted, whether it is worth repairing, reworking or rejecting it. Examiners should be competent enough to evaluate the impact of decisions made on interchangeability, post-processing, performance, reliability, safety and aesthetics.

■ Taking various measures. Typically, this includes measures to prevent the misuse or installation of nonconforming products. Such measures may include the examination of other products designed or processed according to the same procedures as the product found non-conforming and/or previous batches of the same product.

For work in progress, corrective action should be taken as soon as practicable to save on repair, rework or scrap costs. Repaired, remanufactured and/or modified products are subject to re-inspection or re-testing to verify compliance with specified requirements.

■ Disposal. Disposal of nonconforming products must be carried out as soon as it becomes necessary. The decision to accept such products should be documented (along with the rationale) in the authorized waivers, indicating the appropriate precautions.

■ Corrective action. Implementation of corrective actions begins with the identification of quality problems. Corrective actions involve the repair, rework, return or rejection of unsatisfactory products. The need for action to eliminate the cause of nonconformities may be determined by the following factors:

a) customer requirements;

b) information about the operation of products;

c) reviews by management;

d) process nonconformity reports;

e) audits (internal and/or external);

Measures to eliminate the causes of existing or potential nonconformities include:

■ An assessment of the importance of an existing problem affecting quality. Such an assessment should take place in terms of the potential impact of the problem on aspects such as quality costs, raw material processing and manufacturing costs, performance, reliability, safety and customer satisfaction.

■ Explore possible causes contributing to the problem. At the same time, it is recommended to determine the important parameters that affect the ability of the process to meet the established requirements. It is necessary to establish the relationship between cause and effect, taking into account all possible causes. The results of the study must be documented.

■ Problem analysis. In this case, it is necessary to establish the root cause of the problem. Very often, the root cause is not obvious, requiring a thorough analysis of product specifications and all related processes, operations, quality records, service reports and customer opinions. Statistical methods can be used in problem analysis. At the same time, it is recommended to create a file of inconsistencies, from which general problems, individual problems, as well as ways to solve them would be indicated.

■ Eliminate the causes of actual or potential nonconformities. Identification of the cause or potential causes may lead to changes in product specifications and/or revision of the quality system, as well as in the manufacturing, packaging, handling, transportation or storage processes. When eliminating the causes, it is necessary to do everything possible to prevent their reappearance in the future.

■ Process management. Appropriate steps should be taken to manage processes and procedures to avoid reoccurrence of problems. If a corrective action is taken, its consequences must be monitored to ensure that the objectives are met.

■ Changes being made. Changes made as a result of corrective actions should be recorded in work instructions, production process documentation, product specifications and/or quality system documentation.

1

This article deals with the problem of the quality of domestically produced automotive components. As a result of the review of scientific publications, it was found that in the Vladimir region up to 40% of customer complaints about the quality of maintenance and repair of cars are associated with the low quality of spare parts. In this regard, on the basis of the regulatory document GOST 24297-87, a methodology for incoming quality control of spare parts at automotive service enterprises is proposed, which includes an algorithm for monitoring components. In this case, special attention should be paid to the control of spare parts installed in systems that affect the safety of vehicles. The implementation of these measures will not only prevent the ingress of low-quality components to the consumer, but will also contribute to the implementation of the basic principles of quality management: “Customer Orientation” and “Verification of Purchased Products”.

input quality control

spare parts

1. GOST 24297-87. Input control of products. Basic provisions. - Input. 1988-01-01. - M. : Publishing House of Standards, 2003. - 8 p.

2. Russian Federation. The laws. Federal law "On consumer protection": [Feder. Law No. 2300-1: adopted by the State. Duma February 7, 1992: ed. July 18, 2011].

3. Vereshchagin D. Trust, but verify // Correct car service. - 2011 - No. 4 (71). - S. 5-6.

4. Karagodin V.I. Repair of cars and engines: textbook. for stud. avg. prof. textbook institutions / V.I. Karagodin, N.N. Mitrokhin. - 2nd ed., erased. - M .: Publishing Center "Academy", 2003. - 496 p., ISBN 5-7695-1125-7.

5. Latyshev M.V., Sergeev A.G. Quality management in car service processes: monograph. - Vladimir: Publishing House of VlGU, 2005. - 160 p.

6. Stepanova E.G. Quality management of car maintenance by improving the supply chain: Ph.D. dis. … cand. tech. Sciences. - Tolyatti, 2012. - 16 p.

7. Lada Priora: history of a faulty power steering [Electronic resource]. - Access mode: http://www.zr.ru/content/articles/451988-lada_priora_istorija_neispravnogo_usilitela_rula/ (date of access: 10/15/2013).

Introduction. The paper notes that the competitiveness of car service stations (STOAs) largely depends on the system of interaction with suppliers of spare parts and materials, which operates within the framework of the principle "Mutually beneficial relations with suppliers", and established procurement requirements (clause 7.4 GOST ISO 9001-2011).

It is believed that cooperation with leading wholesalers and manufacturers is a guarantee of the quality of car components. In this case, the company of the "Auto maintenance" system has the opportunity to rely on the integrity of its permanent partners. Those infrequent cases of marriage, which will be faced by the workshop, will bring less costs than the organization of incoming quality control. But such a situation is possible only when the company specializes in the repair of cars from the world's leading manufacturers.

The purpose of the study: to develop a methodology for conducting incoming quality control of spare parts at the enterprise of the auto maintenance system.

Research methods: analytical research.

At present, the quality of domestic auto components remains at a relatively low level compared to foreign counterparts. Thus, the paper presents the results of studies conducted on the basis of the Federal State Budgetary Educational Institution of Higher Professional Education "Vladimir State University named after A.G. and N.G. Stoletovs” (VlSU) in the Vladimir region, which showed that up to 40% of customer complaints about the quality of maintenance and repair of cars are associated with poor quality of spare parts or materials.

In this situation, it is expedient to organize a post of incoming quality control of spare parts at the service station. This mechanism will be especially important for companies specializing in the repair of domestically produced cars and cooperating with a large number of small suppliers. In this case, the cost of organizing a spare parts control post will pay off by reducing the number of complaints and related costs.

In accordance with the law of the Russian Federation "On the protection of consumer rights" dated February 7, 1992 No. 2300-1, the consumer has the right to choose a product based on his needs and capabilities. The law prohibits the seller from making the purchase of certain goods conditional on the obligatory purchase of other goods. The consumer has the right to choose an original spare part or assembly produced by an independent company.

Given that among non-original auto components, according to experts, factory defects are much more common, the organization of a post for incoming quality control of spare parts is one of the mechanisms included in the quality management system (QMS) of an enterprise and aimed at preventing low-quality components and assemblies from reaching the end user .

It should be noted that special attention should be paid to the control of spare parts installed in vehicle systems (ATS) that directly affect traffic safety. As an example, consider the electromechanical power steering of VAZ 2170 cars and its modifications. The paper considers the problem of a malfunction of this unit, which consists in the fact that when the vehicle is moving at a speed of 40 km/h, spontaneous rotation of its steering wheel is possible. The specified defect, if it occurs during the operation of the car, contributes to the loss of its controllability, which significantly reduces the active safety of the vehicle and increases the risk of a traffic accident.

Taking as a basis the requirements of GOST 24297-87 and the recommendations for organizing a post of incoming quality control of spare parts in a car service, set out in, an algorithm for conducting incoming quality control of spare parts at a service station has been developed.

Input quality control of products (in this case, spare parts), which is one of the elements of interaction between the supplier (manufacturer, spare parts dealers) and service stations, provides for the prevention of the ingress of products that do not meet the requirements of regulatory and technical and design documentation (NTD and KD), as well as established requirements.

In accordance with GOST 24297-87, the input control of components is carried out by the input control division, which is part of the enterprise's technical quality control service (QCD).

The main tasks of incoming control are:

• monitoring the availability of accompanying documentation for products;
• control of compliance of quality and completeness of products with the requirements of design and regulatory and technical documentation;
• accumulation of statistical data on the actual level of quality of the products obtained and the development on this basis of proposals for improving the quality and, if necessary, revising the requirements of scientific and technical documentation for products;
• periodic monitoring of compliance with the rules and terms of storage of products of suppliers.

Input control is carried out in a specially designated room (section), equipped with the necessary means of control, testing and office equipment, as well as meeting the requirements of labor safety.

Measuring instruments and test equipment used in the input control are selected in accordance with the requirements of the NTD for controlled products and GOST 8.002-86. If the metrological means and methods of control differ from those specified in the NTD, then the Quality Control Department of the STOA agrees on the technical characteristics of the means used and methods of control with the supplier.

To ensure compliance with the requirements of GOST 24297-87, as well as the GOST ISO 9001-2011 standard, a car maintenance and repair enterprise should develop its own technical documentation that establishes the procedure for organizing, conducting and processing the results of input control of spare parts supplied to the organization.

Taking into account that spare parts arrive at the service station in small batches, it is advisable to introduce a complete quality control, rather than a selective one. In addition, the control of incoming parts will be effective only if all spare parts entering the service pass through it.

Continuous quality control is a control in which a decision on the quality of controlled products is made based on the results of checking each unit of production.

The main document on the basis of which the input control of parts is carried out is a working drawing containing information about the main parameters of the product.

By itself, the verification technology involves manual measurement of all parameters of the part using a special measuring tool or the use of digital equipment, if the organization has one. When inspecting a composite assembly, it must first be disassembled.

The proposed method of incoming control of components provides for carrying out work activities in three stages:

• at the first stage, an external inspection of products is carried out, verification of accompanying documents (passport, certificate, waybills), the presence of nameplates and hallmarks of the supplier, the date of manufacture and compliance with the completeness;
• at the second stage - checking the quality characteristics of products;
• at the third stage - checking the performance of the element after installation in the car.

Only those components that fully comply with the manufacturer's and supplier's documentation are allowed to the second stage of incoming inspection. The performance of work on incoming control should be entrusted to the warehouse staff and QCD personnel.

Based on the results of the input control, a conclusion is drawn up on the conformity of the products with the established requirements and the log book of the results of the input control is filled out (Appendix 1 GOST 24297-87). The list, volume, sequence of work must be determined by the instruction (technological map, which describes the entire verification procedure step by step).

Results of the study and their discussion. On fig. 1 shows the proposed algorithm for conducting continuous quality control of spare parts at the service station.

Rice. 1. Algorithm for the input control of spare parts in a car service.

In accordance with the algorithm for conducting incoming quality control, products received from the supplier must be subjected to documentary and quantitative acceptance before the incoming control. To do this, a “product acceptance zone” is organized in the warehouse of the enterprise. The warehouse staff, in accordance with the standard of the enterprise (STP) STOA, controls the accompanying documentation, external inspection and quantitative acceptance.

If discrepancies are identified, the entire batch of products is rejected and stored in a place that excludes the possibility of mixing with products that have passed incoming control (“defective isolator”). QCD employees make an entry in the input control register, draw up a complaint report, and the defective batch is returned to the supplier.

In the absence of accompanying documentation certifying the quality and completeness of products, if an urgent replacement of a failed unit is necessary, auto components, by decision of the Quality Control Department, can be sent for incoming quality control with the obligatory drawing up of a completeness report indicating the missing documents.

If a batch of products is accepted at the first stage of control, then the parts and documentation are sent to the “incoming inspection waiting area”, where they are stored separately from the products accepted and rejected by the incoming inspection.

The time spent by components and documentation in the "waiting area for input control" should be regulated by the STP of the enterprise.

Whereas, it is not recommended to dismantle conjugated pairs that are assembled or balanced at the factory, because the resource of the vehicle structural element is reduced after the disassembly-assembly operation;

If the controlled unit is non-separable, then it is sent for input control, which provides for checking the documentation, dimensions and surfaces of the product (for scratches, cracks, chips, etc.).

In the case of control of a composite unit, the employees of the Quality Control Department of the service station should be guided by information on previous complaints related to failures of this spare part. If there was a repeated failure of the unit after installation on the automatic telephone exchange, then the spare parts received by the enterprise are subject to disassembly and control of each of its parts. Otherwise, the structural element of the car is subjected to external inspection and verification of the accompanying documentation. Based on the results of the control, a conclusion is drawn up on whether the part is good or defective, and a corresponding entry is made in the input control log (Appendix 1).

The spare part, recognized as good, is returned to the warehouse in the “good product storage area”. The defective unit must be marked with red paint or a red marker with the inscription "Rejection" and sent to the warehouse in the "rejection isolation room". QCD employees make a complaint, and defective items are returned to the supplier.

The final stage of quality control of spare parts is to check the performance of parts immediately after installation on a serviced vehicle.

If a unit malfunction is detected after installation on a vehicle, this element must be dismantled and transported to a warehouse in a “defective isolator”, followed by a complaint and return to the supplier.

Conclusion. Since one of the important goals of such a post is to fulfill the basic principle of quality management "Customer Orientation" (clause 5.2 of GOST ISO 9001-2011), it is important that information about the presence of incoming quality control of spare parts gets into the advertising materials of the service station. Also, the organization of input control of spare parts provides for the implementation of the quality management principle "Verification of purchased products" (clause 7.4.3. GOST ISO 9001-2011).

Information about the availability of such a post must also be provided to the supplier of spare parts at the time of signing the cooperation agreement. And the contract itself should stipulate the mechanism of action of the enterprise of the "Auto maintenance" system in the event of a marriage. It is also desirable to provide partners with information on the methods of analysis and obtain their consent in the event that, upon detection of substandard products, the wholesaler intends to challenge the results of the verification. Such a preliminary agreement will subsequently avoid unnecessary disputes and promptly replace substandard products. Then the post of input control of components will become a mechanism that contributes to improving the quality of automotive equipment service at the enterprise and, as a result, increasing the loyalty of its customers.

Reviewers:

Gots A.N., Doctor of Technical Sciences, Professor, Professor of the Department of Thermal Engines and Power Plants, FGBOU “Vladimir State University named after V.I. Alexander Grigorievich and Nikolai Grigorievich Stoletov, Vladimir.

Kulchitsky A.R., Doctor of Technical Sciences, Professor, Chief Specialist of LLC “Plant of Innovative Products KTZ”, Vladimir.

Bibliographic link

Denisov I.V., Smirnov A.A. METHODOLOGY OF INPUT QUALITY CONTROL OF SPARE PARTS AT THE ENTERPRISES OF THE CAR SERVICE SYSTEM // Modern problems of science and education. - 2013. - No. 5.;
URL: http://science-education.ru/ru/article/view?id=10753 (date of access: 03/30/2019). We bring to your attention the journals published by the publishing house "Academy of Natural History"