Notice of the General Office of the General Administration of Quality Supervision, Inspection and Quarantine on Issues Concerning the Safety Supervision of Pressure-bearing Special Equipment

Special Letter of the Quality Inspection Office [ 2017] 1336No.

Source : AQSIQ   2017/11/6 10:54:45  Policies and regulations    

Quality and technical supervision bureaus (market supervision and administration departments) of all provinces, autonomous regions and municipalities directly under the Central Government:

In view of the recent new situations and new problems in the safety supervision of boilers, pressure vessels, pressure pipelines and other pressure-bearing special equipment, in order to further improve the safety supervision work, after research, the opinions on relevant issues are hereby notified as follows, please implement them according to the actual situation .

1. Boiler

(1) Materials for domestic units to manufacture boilers of overseas brands.

Domestic enterprises manufacturing boiler materials of overseas brands shall manufacture in accordance with TSG G0001-2012 , hereinafter referred to as "Boiler Regulations") , and do not need to comply with the "Boiler Regulations" 2.6.2 of the "Boiler Safety Technical Supervision Regulations" ( the technical requirements stipulated in 1.6. It is required to pass technical review and approval.

(2) About the low water level interlock protection device of the steam boiler.

The the "Boiler Regulations" clearly stipulates that all types of steam boilers should be equipped with low water level interlocking protection devices.Units using steam boilers in use 1No. 1 Amendment to with rated evaporation less than 2t/h (except steam boilers with a design normal water level and water volume ≤ 50L) shall 1install low water level interlocking protection devices in accordance with the requirements of the No. The installation work should be completed within two external inspection cycles from the date of publication of this article. The specific installation completion time range shall be determined by the boiler periodic inspection agency according to the inspection time.For steam boilers that have not completed the installation of the above-mentioned interlocking protection devices within the specified time limit, the inspection agency shall not draw a conclusion that they meet the requirements during the regular inspection.For once-through boilers without a fixed steam-water boundary, the water volume is calculated based on the total volume of water in the heating surface.

(3) About the production, use and inspection of waste heat boilers.

The design of the waste heat boiler is carried out by the designer according to the specific product component structure, in accordance with the corresponding boiler and pressure vessel safety technical specifications and standards, in which the drum (steam-water separator) can be designed according to either the pressure vessel standard or the boiler standard. The heating surface components such as walls and serpentine tubes can be designed with reference to boiler standards. The design of waste heat boilers for power generation should also meet the relevant technical requirements of power station boilers.The overall waste heat boiler product is classified as a boiler or pressure vessel on the drawing by the designer according to the main design basis, and should be manufactured by the unit holding the boiler or pressure vessel manufacturing license of the corresponding level, and installed by the boiler or pressure vessel holding the corresponding level. The licensed unit or its manufacturing unit shall carry out the installation, handle the use registration and conduct regular inspections according to the overall product design classification.

(4) About boiler renovation.

When the boiler fuel is changed, if the combustion method has not changed, and the heating surface and pressure-bearing parts have not been changed, it will not be listed as a transformation; if the combustion method has changed (such as layer combustion and chamber combustion, etc.), it should be listed as a boiler transformation.The unit that changes the use of boiler fuel shall go through the change of use registration, and the content of the change shall include the type of fuel in the product data sheet and the product model in the use registration form.Changes that only retain the boiler support frame structure to replace the main heating surface and other pressure-bearing components are not classified as renovations, but belong to new manufacturing.

No technical review is required for the modification of the boiler to increase the rated working temperature by adjusting or replacing the heating surface and replacing the steam pipeline without increasing the rated working pressure.Other requirements of the renovation work should meet the provisions of the "Boiler Regulations".Boiler users and transformation units shall reasonably determine the transformation plan according to the boiler type to ensure the safe operation of the boiler after transformation.

(5) About electric heating steam generators.

Electric heating steam generators that output steam externally and whose steam pressure and volume parameters comply with the "Special Equipment Catalog" can be designed and manufactured according to the corresponding standards and safety technical specifications for boilers or pressure vessels.For products designed according to pressure vessels, the requirements for safety accessories shall also meet the requirements of the "Boiler Regulations".The manufacturing unit shall hold the corresponding level boiler manufacturing license or pressure vessel manufacturing license.Electric heating steam generators shall be registered as boilers.

(6) About the steam (water, oil) cylinder.

For the steam separation (water, oil) cylinders within the scope of boilers (including the steam separation (water, oil) cylinders with a volume less than 150mm 30Lor an inner diameter of less than 150mm ), the design, manufacture and inspection requirements shall meet the relevant regulations on boiler headers or pressure vessels .Separating steam (water, oil) cylinders should be manufactured by enterprises with corresponding boiler or pressure vessel manufacturing license qualifications and have undergone manufacturing supervision and inspection. Generally, use registration and periodic inspections should be carried out with the boiler body.Those that meet the scope of application of the "Stationary Pressure Vessel Safety Technology Supervision Regulations" ( TSG 21-2016 , hereinafter referred to as "Solid Capacity Regulations") can also be individually designed, manufactured, registered for use and regularly inspected according to pressure vessels.

2. Pressure vessel

(1) Declaration of compliance with pressure vessel standards.

When a standard other than the harmonized standard stipulated in the "Solid Capacity Regulation" 1.10is adopted for the design of pressure vessels, the design unit shall provide the manufacturer with a compliance statement and a comparison table that the design documents meet the basic safety requirements of the "Solid Capacity Regulation", and the manufacturer shall Summarize it into the product ex-factory data, and the specific format shall be formulated by the design unit with reference "AQSIQ Announcement on Matters Concerning the Manufacture License of Pressure-bearing Special Equipment" (Announcement No. of AQSIQ 2012) .151to the comparison table format provided by the The reference content should include the basic safety requirements for materials, design and manufacturing in the "Solid Capacity Regulations".For products manufactured in batches, such as accumulators, refrigeration pressure vessels, and simple pressure vessels, product 1.10standards other than the "Solid Capacity Regulations" harmonized standards (including overseas standards, industry standards, group standards, enterprise standards, etc.) are used to design and manufacture products. , according to the design pressure and design temperature range, fill in the general compliance statement and comparison table according to the product type, and fill in "general " in the "general drawing number" item in the compliance statement.

(2) Traceability information identification of materials.

"Solid Content Regulations" 2.1.1 ( ) of the 4, the specific content of the information of the material traceability information identification can be determined by the material manufacturing unit or pressure vessel manufacturing unit according to the actual situation of the unit's materials or the needs of customers, but generally it should include the material manufacturing unit. Name, material grade, specification, batch number, delivery status (heat treatment status), production date (delivery date or quality certificate issue date), etc.

(3) Qualifications for the design and approval of pressure vessels and pressure piping.

Personnel engaged in pressure vessel design review and approval, pressure piping design review and approval (hereinafter referred to as design approval personnel), and designers engaged in pressure vessel analysis and design (hereinafter referred to as analysis and design personnel) no longer need to comply with the requirements of the "Pressure Vessel Pressure Pipeline Design" Article 6 of the Licensing Rules ( TSGR1001-2008 ) stipulates the corresponding qualifications.Pressure vessel design units and pressure pipeline design units (hereinafter collectively referred to as design units) may, on their own or entrust third-party professional organizations, to conduct training and assessments for design approval personnel and analysis and design personnel to ensure that they have the corresponding capabilities.

The appraisal and evaluation agency shall conduct 3an on-site closed-book examination of not less than one hour (the test paper is generated from the question bank) for the design approval personnel and analysis and design personnel of the design unit to understand the standard specification and professional knowledge (the test paper is generated from the question bank) and no less than one 1hour per person. The analysis and defense of the drawings, the analysis and design personnel's ability to operate the design software should also be assessed.The appraisal and appraisal materials submitted by the appraisal and evaluation agency shall include the results of the on-site examination of the design examiner or analysis designer and the explanatory materials that they have the corresponding abilities (exam papers and defense records shall be archived by the appraisal agency).If the design unit submits the results of the above-mentioned personnel who have passed the training and assessment of a third-party professional organization during the appraisal and assessment, the appraisal and assessment agency shall confirm the content and results of the assessment. Included in the explanatory materials of the appraisal review report.

(4) Type test on stationary vacuum insulated cryogenic pressure vessels.

When manufacturing a vacuum insulated cryogenic container (including strain-strengthened container) for the first time, the manufacturer shall 4.1.2 of the "Solid Volume Regulations".invite a type test institution approved by the General Administration of Quality Supervision, Inspection and Quarantine to conduct type tests in accordance with the provisions of The type test of the stationary vacuum insulated cryogenic pressure vessel is temporarily carried out by the approved type test institute with the project of mobile pressure vessel (vacuum insulated tank).

(5) Non-destructive testing on the surface of pressure vessels for refrigeration and air conditioning.

According to the actual conditions of manufacture and use of pressure vessel equipment for refrigeration and air conditioning, the pressure vessel for refrigeration produced in accordance with "Pressure Vessels for Refrigeration Equipment" ( NB/T 47012 ) can be exempted from the requirements in "Solid Capacity Regulations" . 3.2.10.2.2.4 ( 2) of the Require.

(6) Manufacture licensing conditions for underground gas storage wells.

An underground gas storage well manufacturing enterprise shall apply for a pressure vessel manufacturing license according to the pressure level and product category of the gas storage well.The basic elements of the quality assurance system should include the processes of drilling, steel pipe assembly, cementing, testing and testing.Steel pipe assembly, cementing, pressure test and air tightness test shall not be subcontracted.The personnel in the quality assurance system shall include those responsible for design, technology, materials, drilling, cementing, steel pipe assembly, pressure test and air tightness test, and final inspection, among which the personnel responsible for technology and cementing shall have the title of engineer or above.The number of technicians shall meet the licensing requirements of the corresponding level, and the non-destructive testing personnel shall include at least one non-destructive testing personnel holding UT and RT intermediate or above.Professional operators should include steel pipe assembly and cementing professional operators and not less than 8one person, and the manufacturing site should be equipped with steel pipe assembly and cementing professionals.Production equipment should include steel pipe assembly equipment that meets manufacturing requirements, including hydraulic tongs (casing power tongs, with a maximum torque of not less than 28KN.m ), power systems, fixtures, etc., and mud pumps required for cementing.Testing, measuring and testing equipment should include necessary thickness, length, pressure and torque measuring equipment and pressure test pumps with the highest working pressure that can meet the pressure test requirements.

(7) A description of the name of the medium.

"Mixed "Mobile Pressure Vessel Safety Technical Supervision Regulations" ( TSG R0005-2011 , hereinafter referred to as "Mobile Capacity Regulations") and 3-4 of liquefied petroleum gas" in Table GB 12268 "List Dangerous Goods" No. 1075of "LPG" is the same medium, the design unit can use the above two medium names in the design file.The form of medium marked as "liquefied petroleum gas (propane)" in the ex-factory data (product quality certificate, nameplate, etc.) of the mobile pressure vessel does not conform to the "Mobile Capacity Regulation""Limited to one medium in the quality certification data" ", "LPG" and "propane" should be marked separately.

(8) Supervision on the use of mobile pressure vessels containing nitrogen trifluoride.

For in-use tube-bundle containers containing nitrogen trifluoride that have been imported or used, if they have passed the import (port) safety and quality supervision inspection or regular inspection, and the inspection conclusion is qualified, localities can apply for use registration and allow filling and use. .The relevant filling unit shall apply for the filling license for mobile pressure vessels in accordance with the filling licensing rules.

Local special equipment safety supervision departments at all levels should urge users to strengthen the safety management of the use of nitrogen trifluoride tube bundled containers, do a good job in filing, routine maintenance and regular inspection and inspection, and effectively perform the main responsibility for use safety.When an inspection agency accepts an application for the supervision and inspection of imported mobile pressure vessels containing liquefied gas, the manufacturer or user shall submit 1.7the technical review and approval documents stipulated in the "Mobile Capacity Regulations", and the inspection agency can carry out the safety and quality supervision of imported mobile pressure vessels. test.

(9) About the quality of the pressure medium of the oxygen chamber pressure regulation system.

The quality of the pressure medium of the pressure regulation system of the oxygen chamber shall be checked daily by the user, and the inspection agency shall check the inspection status of the user during the regular inspection of the oxygen chamber.If the user unit is incapable of inspecting the quality of the pressure medium, it may entrust an oxygen chamber inspection agency or other third-party agency for inspection.

3. Gas cylinder

(1) Safety supervision on station gas cylinders or cylinder groups.

The gas cylinders or cylinder groups that are designed and manufactured in accordance with the gas cylinders and are used fixedly in the gas filling station shall be registered for use and undergo periodic inspection according to the gas cylinders (periodic inspection agencies shall have PD1 qualification or RD8 qualification).For large-volume seamless gas cylinders and their cylinder groups, the periodic inspection agency shall, in accordance with the provisions of "Large-volume Seamless Steel Gas Cylinders" ( GB33145-2016 ), add relevant information on the inspection of large-volume seamless gas cylinders to the regular inspection items. Require.When station gas cylinders or cylinder groups are used for fixed use, their installation requirements should also comply with the national architectural design fire protection regulations and relevant regulations on fire protection.

(2) About the automatic recording function of the hydraulic test device.

In order to realize the traceability of the safety and quality of gas cylinder products, the "Cylinder Safety Technology Supervision Regulations" 4.9( 3) stipulates that "the hydraulic test device should be able to automatically record the cylinder number, time and test results in real time".The hydraulic test device of each liquefied petroleum gas cylinder manufacturer shall be able to realize the following functions at the same time:

1. Automatically read and record the bottle number, and the recognition accuracy rate is over 95% ;

2. Automatically record the actual test pressure in real time;

3. Ensure that the pressure holding time of the gas cylinder is not less than 30seconds;

4. Automatically record the test results, and save the of the hydraulic test pressure test of the gas cylinders tested at each station of the test device .-time curve

If the water pressure test device of the manufacturer cannot automatically read and record the steel seal number of the gas cylinder one by one, a permanent electronic reading mark (two-dimensional code or electronic label) shall be installed on each gas cylinder to realize automatic reading. and record.

(3) Explanation on the relevant clauses of the "Regulations on Gas Cylinder Filling Licensing".

1. When a cylinder filling permit is not required.

The filling behavior of respirator gas cylinders used by firefighters and mine rescue personnel is not included in the scope of the gas cylinder filling permit, and the filled gas cylinders are limited to internal use and shall not be used for external sales.

2. Article 5 (2) of "Regulations on Gas Cylinder Filling Licensing" "Approval from government planning, fire protection and other relevant departments" The applicable conditions are:

( 1) The newly acquired and relocated filling station shall have the "Planning Permit" issued by the local government or relevant departments, and the refilling station shall have the "Planning Permit" issued by the local government or relevant departments or can prove that it is Administrative license documents for legal business operations ("Hazardous Chemicals Business License" and "Gas Business License", etc.);

( 2) According to the relevant requirements of the competent fire department, the fire inspection qualification opinion letter obtained by the filling station after applying for the fire protection acceptance inspection, etc.

3. Article 9 of "Cylinder Filling Licensing Rules" "The applicant can carry out the debugging of the gas cylinder filling line" "Filling line debugging" refers to the special equipment of the filling station, the gas cylinder filling line The overall commissioning and trial filling of gas cylinders; the filling station shall not be open for business until the filling permit is obtained.

4. "Gas Cylinder Filling Licensing Rules" A5.3 "Filling safety facilities shall meet the requirements for safety facilities in the following standards", the four standards listed ( GB 17264-1998 、GB 17265-1998 、GB 17266-1998 、GB 17267-1998 ) has been replaced by "Technical Conditions for Safety of Gas Cylinder Filling Stations" ( GB/T 27550-2011 ). After the implementation of the standard GB/T 27550 , new applicants and renewal units for gas cylinder filling licenses will be The requirements of this standard for safety facilities shall be met.

(4) About special color LPG cylinders.

A gas cylinder property unit applying for the use of LPG cylinders with special colors must meet the following conditions:

1. The quality and technical supervision department that handles the registration of the use of gas cylinders shall agree and be responsible for supervision.

2. Install a permanent electronic identification (QR code or electronic label) on the gas cylinder and establish a gas cylinder traceability system.

3. Emboss the title unit logo on the head of the gas cylinder (except for the bottle in use).

(5) Regarding the export of gas cylinders.

Exported gas cylinders manufactured in accordance with national standards shall have the " stamped on the part of the cylinder's supervisory inspection stamp CK " , and the "export" Chinese character or Hanyu Pinyin should be marked on the certificate of conformity.Exported gas cylinders do not need to be manufactured and inspected, and are not allowed to be used in China.

(6) Regarding the temporary import of gas cylinders.

Temporary imported gas cylinders are only limited to foreign filling of domestic use or domestic filling of alternately used foreign gas cylinders, and those that cannot be alternately used shall not be managed and used as temporarily imported gas cylinders.

Fourth, the pressure pipeline

(1) About the pressure pipeline in the long-distance pipeline station.

The pressure pipeline in the long-distance pipeline station shall be managed as an industrial pipeline, and its design, component manufacturing, installation, inspection and testing, and use registration shall comply with the relevant regulations on industrial pipelines.

(2) Regular inspection of oil and gas pipelines.

1. The inspection agency shall carry out the periodic inspection of oil and gas pipelines in accordance with the "Regulations for Regular Inspection of Pressure Pipelines - Long-distance (Oil and Gas) Pipelines" ( TSG D7003 ), and shall meet the following requirements:

( 1) Periodic inspection of oil and gas pipelines includes the use of detectors for internal inspection (except for pipelines that do not have internal inspection conditions) and external inspection of external anti-corrosion (insulation) layers and cathodic protection system conditions. In principle, only internal inspection or external inspection cannot be carried out. deemed to have completed the periodic inspection;

( 2) For oil and gas pipelines that do not have internal inspection conditions, it is allowed to select applicable external inspection methods for pipeline inspection according to the main damage mode of the pipeline;

( 3) For pipelines that cannot be tested internally or externally, or when inspectors have doubts about the safety of the pipeline, pressure ( pressure ) tests should be carried out.

2. Institutions engaged in regular inspection of oil and gas pipelines shall obtain DD1 inspection qualification (internal and external inspections shall be indicated on the certificate), and institutions engaged in internal magnetic flux leakage testing shall also obtain magnetic flux leakage testing ( MFL ) qualifications.

(3) Periodic inspection of skid-mounted pressure equipment systems or mechanical equipment systems (hereinafter collectively referred to as "equipment systems").

The pressure vessels and pressure pipelines in "equipment system" should be regularly inspected by institutions with corresponding qualifications for regular inspection of pressure vessels or pressure pipelines.

General Office of AQSIQ

2017 11month 1day

(This piece is publicly released)