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In September 2013, the Special Equipment Safety Supervision Bureau (hereinafter referred to as "the SESSB") of the former General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China (hereinafter referred to as “the former AQSIQ”) issued the development assignment of Regulation on safety technology for gas cylinder, which requires to formulate a comprehensive safety technical specification for gas cylinder based on seven safety technical specifications, i.e., Supervision regulation on safety technology for gas cylinder, Gas cylinders safety and technical supervision regulation for vehicles (TSG R0009-2009), Gas cylinder appurtenances safety and technical supervision regulation (TSG RF001-2009), Gas cylinder design document appraisal regulation (TSG R1003-2006), Gas cylinder filling licensing regulation (TSG R4001-2006), Regulation for type test of gas cylinders (TSG R7002-2009) and Gas cylinder manufacture supervision inspection regulation (TSG R7003-2011).
In October, 2013, a working meeting was held in Beijing to establish a drafting team to develop the drafting work plan of the Regulation, determine the principles, key contents, main problems, structure (clause) framework, make specific division of drafting and prepare a drafting schedule.
In August 2015 and August 2016, the drafting team held the 2nd and 3rd meetings in Beijing to discuss and revise the draft, and an exposure draft was formulated. In March 2017, the SESSB issued ZHIJIANTEHAN [2017] No. 13 to solicit opinions from basic-level departments, organizations concerned, experts and the citizens. In August 2017, the drafting team held the 4th meeting in Beijing to study and discuss the opinions solicited and modify the draft accordingly.
In October 2017, the SESSB issued ZHIJIANTEHAN [2017] No. 61 to solicit opinions from basic-level departments, organizations concerned, experts and the citizens again. The drafting team studied and discussed the opinions solicited for the second time, and the draft for review was formulated through revision.
With the transformation of government functions and the advancement of administrative licensing reform, the drafting team revised the draft for review as required by the SESSB so as to coordinate with the Announcement of the State Administration for Market Regulation on matters related to administrative licensing of special equipment [2019] No.3 and the Regulation for production and filling licensing of special equipment (TSG 07-2019). In May 2020, the SESSB submitted the draft for review to the Special Equipment Safety and Energy Saving Technical Committee of State Administration for Market Regulation (hereinafter referred to as “SAMR”), and then the draft for approval was formulated by the drafting team through revision based on the review opinions.
In September 2020, draft for approval of the Regulation was submitted to the WTO/TBT by the SAMR for notification. In November 2020, the WTO/TBT notification ended.
On January 4, 2021, the Regulation was approved and issued by the SAMR.
The Regulation is developed in accordance with the following basic principles:
1. The comprehensive safety technical specification for gas cylinders is developed according to the Special equipment safety law of the People's Republic of China and Regulations on safety supervision for special equipment, by merging the seven existing safety technical specifications for gas cylinders and straighten out their logical relation, unifying and further clarifying the basic safety requirements for gas cylinders;
2. Adjust the content of administrative license in each link according to the requirements of the administrative licensing reform;
3. Organize the relevant documents of the former AQSIQ on the safety work of gas cylinders in recent years, summarize the specific problems existing during the publicity and implementation of seven safety technical specifications, such as Supervision regulation on safety technology for gas cylinder, and put forward specific regulations in the aspects of materials, design, manufacture, type test, supervision and inspection, gas cylinder attachment, filling and use, periodic inspection, etc.
Regulation on safety technology for gas cylinder
1 General provisions
1.1 Purpose
The Regulation is formulated according to Special equipment safety Law of the People's Republic of China and Regulations on safety supervision of special equipment with a view to standardize the safe operation of gas cylinder, guarantee people's life and property safety, and promote the socioeconomic development.
1.2 Applicable scope
(1) The Regulation is applicable to seamless gas cylinders, welded gas cylinders, cryogenic insulated cylinders, fiber-wrapped gas cylinders, internal-packed gas cylinder and their bundling devices (Note 1-3), for containing compressed gas, high/low pressure liquefied gas, refrigerated liquefied gas, dissolved gas, adsorbed gas, gas mixture (Note 1-2) and liquid with normal boiling point equal to or lower than 60°C, used at ambient temperature of -40°C ~ 60°C (Note 1-1), with nominal volume of 0.4L ~ 3000L, nominal working pressure of 0.2MPa ~ 70MPa (gauge pressure, similarly hereinafter) and the product of pressure and volume greater than or equal to 1.0MPa·L.
(2) Large capacity gas cylinders for tube trailers and tube bundle containers and gas cylinders for fire extinguisher shall meet the requirements of general provisions, materials, design and manufacturing in the Regulation. Tube trailers and tube bundle containers shall also meet the requirements of Supervision regulation on safety technology for transportable pressure vessel; relevant provisions of the Regulation may apply to the large capacity gas cylinders with a capacity more than 3,000L and less than or equal to 5,000L.
The gas cylinders referred to in this regulation include the cylinder shell and cylinder attachment. See Annex A for the classification, varieties and codes of the major gas cylinders covered in the Regulation.
Note 1-1: Ambient temperature of gas cylinders for vehicles (Note 1-4) and fire extinguishers shall be in accordance with the relevant standards.
Note 1-2: See Annex B for the classification of gases filled in cylinder such as compressed gas, high (low) pressure liquefied gas, refrigerated liquefied gas, dissolved gas, adsorbed gas and gas mixture, and the physical parameters of common gases.
Note 1-3: Gas cylinder bundling device refers to a cylinder group packaging device that bundles several gas cylinders together for road transportation or temporarily fixes them for use, which generally consists of gas cylinders, pipelines and frames.
Note 1-4: Gas cylinder for vehicles refers to the gas cylinder fixed on a motor vehicle and containing motor vehicle fuels (such as natural gas, hydrogen, liquefied petroleum gas, liquefied dimethyl ether, etc.).
1.3 Inapplicable scope
The Regulation is not applicable to gas cylinders for fire extinguishers that withstand transient pressure only in fire extinguishing, portable dry powder type gas cylinders, water-based gas cylinders for fire extinguishers and brazed structure gas cylinders, and gas cylinders for military equipment, nuclear facilities, aerospace vehicles, railway locomotives, offshore facilities, ships, pits of mines, and dedicated equipment for civil airports.
1.4 Relationship with standards and management systems
(1) The Regulation specifies the basic safety requirements of design, manufacture, type test, supervision and inspection, filling and use, regular inspection, etc. of gas cylinders, and the relevant standards of gas cylinders and safety management requirements of relevant organizations for gas cylinders, etc., shall not be lower than the requirements of the Regulation;
(2) Generally, gas cylinder products shall be designed and manufactured according to national standards or professional standards. If relevant national standards or professional standards have not been formulated, social organization standards or enterprise standards shall be formulated. The enterprise standard developer shall also provide a comparison table that meets the basic safety requirements of the Regulation in the form shown in Annex C.
1.5 Handling of special cases
If a relevant organization adopts new materials, new technologies and new processes, which are inconsistent with the Regulation or which are not required by the Regulation and may have a significant impact on safety performance, it shall be reported to the State Administration for Market Regulation and the Administration shall organize technical review and approval according to the review and approval procedures of new materials, new technologies and new processes.
1.6 Harmonized standards and reference standards (Note 1-5)
The harmonized standards for the Regulation refer to the national standards that meet the basic safety requirements of the Regulation. The reference standards for the Regulation refer to the basic standards such as material standards, medium standards, method standards, parts standards, filling standards, inspection standards, etc. Harmonized standards are as follows:
(1) GB/T 5099.1 Seamless steel gas cylinders — Part 1: Quenched and tempered steel cylinders with tensile strength less than 1 100 MPa;
(2) GB/T 5099.3 Seamless steel gas cylinders — Part 3: Normalized cylinders;
(3) GB/T 5099.4 Seamless steel gas cylinders — Part 4: Seamless stainless steel gas cylinders;
(4) GB/T 5100 Welded steel gas cylinders;
(5) GB/T 5842 Liquefied petroleum gas cylinders;
(6) GB/T 11638 Dissolved acetylene cylinders;
(7) GB/T 11640 Seamless aluminium alloy gas cylinders;
(8) GB/T 17258 Steel cylinders for the on-board storage of compressed natural gas as a fuel for automotive vehicles;
(9) GB/T 17259 Steel cylinders for the liquefied petroleum gas for vehicles;
(10) GB/T 17268 Non-refillable steel welded cylinders for industrial use;
(11) GB/T 24159 Welded insulated cylinders;
(12) GB/T 24160 Hoop-wrapped composite cylinders with steel liner for the on-board storage of compressed natural gas as a fuel for automotive vehicles;
(13) GB/T 28053 Composite cylinders for breathing apparatus;
(14) GB/T 28054 The bundles of seamless steel gas cylinders;
(15) GB/T 32566 Welded stainless steel gas cylinders;
(16) GB/T 33145 Large capacity seamless steel gas cylinders;
(17) GB/T 33147 Liquefied dimethyl ether cylinders;
(18) GB/T 34510 Liquefied natural gas cylinders for vehicles;
(19) GB/T 35544 Fully-wrapped carbon fiber reinforced cylinders with an aluminum liner for the on-board storage of compressed hydrogen as a fuel for land vehicles
Note 1-5: Among the harmonized standards and reference standards listed in the Regulation, for dated references, subsequent amendments (excluding any corrections) to, or revisions of any of these publications do not apply. For undated references, the latest edition of the normative document applies.
1.7 Dedicated gas cylinders
Gas cylinders for pure gas shall be dedicated, and only gases compliant to the design documents and manufacture marks are allowed to be filled (except the purging gas used in the filling process), and the manufacture marks and application of gas cylinders shall not be changed, nor shall other gases be mixed.
Gas cylinders for gas mixture shall be filled with gas mixture with the same characteristics (Note 1-6) with those specified by the gas cylinder mark.
Note 1-6: Gas characteristic refers to toxicity (T), oxidability (O), flammability (F) and corrosivity (C) determined according to GB/T 16163 Classification of gases filled in cylinder and GB/T 34710 Classification of the mixture gas.
1.8 Gas cylinder marks
Gas cylinder marks include manufacture mark, periodic inspection mark and others.
(1) Generally, manufacture marks include steel impression mark (including mark on nameplate), label mark (pasted on shell, the same below), typographical mark (printed on shell, the same below), electronic reading mark (including radio frequency label and electronic carrier such as two-dimensional code which uses image recognition technology to scan and read data electronically, the same below) and gas cylinder colored mark;
(2) Periodic inspection marks include steel impression mark, electronic reading mark, label mark and coating mark, etc.;
(3) In addition to the cylinder marking methods in Items (1) and (2), as for gas cylinder for taxi fuel, the gas cylinder manufacturing unit, the installation unit or the inspection agency shall arrange a permanent "TAXI" mark (steel impression mark for steel gas cylinder; resin coated label for fiber-wrapped gas cylinder) on an obvious position of the gas cylinder.
1.8.1 Manufacture marks of gas cylinder
1.8.1.1 Steel impression mark, label mark or typographical mark of gas cylinder
(1) Manufacture mark of gas cylinder is the basis to identify gas cylinder, and the content of the mark shall meet the requirements of Annex D hereto and relevant standards; the contents of manufacture mark of small capacity gas cylinders may refer to the requirements of Annex D hereto;
(2) The manufacturing unit shall make a manufacture mark on each gas cylinder, such as steel impression mark, label mark or typographical mark;
(3) The manufacturing unit shall imprint the concave contained medium, year of manufacture and property right unit mark on the head of steel fuel gas cylinder (Note 1-7), and imprint the words "Prohibited in crowded rooms" on the shield; composite fuel gas cylinders shall be die-cast on the jacket to contain the medium, the year of manufacture, the sign of the property right unit, and the words "Prohibited in crowded rooms".
Note 1-7: Fuel gas cylinder refers to a cylinder containing civil fuel gases such as liquefied petroleum gas and liquefied dimethyl ether, which are classified into steel fuel gas cylinders and composite fuel gas cylinders.
1.8.1.2 Electronic reading mark
The manufacturing unit of hydrogen cylinders, fiber-wrapped gas cylinders, fuel gas cylinders and gas cylinders for vehicles shall be provided with traceable permanent electronic reading marks on the ex-factory gas cylinders. Other gas cylinder manufacturing units are encouraged to use traceable permanent electronic reading marks on gas cylinders.
The electronic reading marks set on steel fuel gas cylinders shall be engraved or welded directly on the shield, and make sure that they cannot be replaced and can be read effectively within the service life of the cylinders. The electronic reading marks shall be able to link to the gas cylinder product publicity platform established by the manufacturing unit through mobile phone scanning, and directly obtain the product information data of each gas cylinder.
1.8.1.3 Colored mark, typeface and colored ring on external surface of gas cylinder
Colored mark, typeface and colored ring on gas external surface of gas cylinders shall meet the requirements of GB 7144 Colored cylinder mark for gases; if there is special requirement on colored mark, typeface or colored ring, they shall meet the requirements of corresponding product standard. As for colored mark, typeface and colored ring of gas cylinders that are not listed in any national standards, relevant social organization standards shall be prepared. The name or abbreviation of the gas cylinder filling unit responsible for the use registration shall be marked on the obvious position of gas cylinders.
1.8.1.4 Special colored mark of fuel gas cylinder
(1) The registration authorities for cylinder use may, in the city (county), specify a unified special colored mark on the fuel gas cylinders filled in this area;
(2) The gas cylinder filling unit with more than a certain number of self-owned fuel gas cylinders may, with the consent of the registration authority for cylinder use, apply several special colored marks on the gas cylinders that have been registered for use.
1.8.1.5 Mark of cryogenic insulated cylinders (including liquefied natural gas cylinders for vehicles)
Gas cylinders containing liquid oxygen (O2), nitrous oxide (N2O), liquefied natural gas (LNG) and other media shall be stamped with obviously raised medium symbols such as "O2", "N2O" and "LNG" at the obvious position of the upper head of the shell.
1.8.2 Periodic inspection mark of gas cylinder
Method for periodic inspection marking of gas cylinder shall meet the requirements of Annex D herein. The periodic gas cylinder inspection agency shall arrange permanent inspection-passed marks, apply the name of inspection agency and the date of the next inspection on the gas cylinders that pass the inspection one by one (cylinders that cannot be coated may be provided with inspection mark rings instead), and input inspection information in the database related to electronic reading marks.
1.9 Imported and exported gas cylinder
Imported and exported gas cylinders shall meet the requirements of Annex E hereto in addition to the relevant requirements on inspection of import-export goods.
1.10 Management requirements
Gas cylinder manufacturing units, filling units, inspection and testing institutions, etc., shall strictly implement the Regulation. They shall record the process information of design, manufacture, filling and inspection of gas cylinder products, establish a gas cylinder quality and safety traceability system, and timely record the required information into the gas cylinder quality and safety traceability information platform according to the regulations for information management of special equipment.
2 Materials
2.1 Basic requirements
(1) The mechanical, chemical and processing properties and the compatibility with contents shall be considered for the material selection of gas cylinder (generally shell in this clause).
(2) Gas cylinders shall be made of materials with mature use experience and included in the harmonized standards of the Regulation; technical indexes such as strength, impact toughness, chemical composition, elastic modulus of materials, and polymerization amount and density of polymer materials shall meet the requirements of harmonized standards;
(3) Materials that are not listed in the national standards for gas cylinders shall be verified by type test organizations approved by the General Administration of Market Supervision, and the technical review of new materials shall be conducted in accordance with 1.5 of the Regulation;
(4) The material manufacturing unit shall make clear and firm factory steel impression mark or adopt other traceable mark on the obvious position of the material;
(5) The material manufacturing unit shall provide the material using unit with complete and clear material quality certificate which shall be printed with traceable information identification, and stamped with the quality inspection seal of the material manufacturing unit; traceable information includes the name of material manufacturing unit, material designation, specifications, furnace batch number, delivery state, issue date of quality certificate; traceable information identifications include two-dimensional code and bar code.
(6) Where a gas cylinder manufacturing unit obtains gas cylinder materials from a non-material manufacturing unit, it shall obtain the original quality certificate of the material manufacturing unit or the quality certificate copy stamped with the official seal of the material supply unit or the handler's signature (seal);
(7) The material using unit shall be responsible for the authenticity, traceability and consistency of the materials selected for gas cylinders and the material quality certificate.
2.2 Performance requirements
(1) Steel gas cylinders shall be made of non-aging killed steel smelted by electric furnace or oxygen converter;
(2) Steel seamless gas cylinders shall be made of high-quality carbon manganese steel and chromium molybdenum steel with carbon content not more than 0.38%, with sulfur and phosphorus contents not more than 0.010% and 0.015% respectively, and total sulfur and phosphorus content not more than 0.020%;
(3) Steel plates for welded steel gas cylinders shall have good rolling processing and welding performance, with carbon content not greater than 0.20% and carbon equivalent not greater than 0.50%, the content of sulfur and phosphorus contents not more than 0.020% and 0.025% respectively. The material of non-refillable welded steel cylinder shall be carbon steel with carbon content not more than 0.12%;
(4) Stainless steel gas cylinders shall be made of austenitic stainless steel or austenitic-ferrite duplex stainless steel, which has good intergranular corrosion resistance and stress corrosion resistance;
(5) Materials for aluminum alloy cylinders and aluminum alloy liners shall have good intergranular corrosion resistance and stress corrosion resistance; the contents of lead and bismuth in aluminum alloy materials shall not exceed 0.003%; individual content of other impurity elements shall not be greater than 0.05%, and total content shall not be greater than 0.15%;
(6) The actual tensile strength of materials for steel gas cylinders containing medium with a tendency of stress corrosion shall be controlled under 880MPa;
(7) The actual tensile strength of steel gas cylinders containing hydrogen or other brittle medium shall be controlled not greater than 880MPa; when its actual yield ratio (ratio of yield strength to tensile strength, the same below) is not greater than 0.9, its actual tensile strength of materials may not exceed 950MPa;
(8) If the sulfur and phosphorus contents of the steel cylinder containing compressed natural gas and the steel liner of fiber-wrapped cylinder are not more than 0.005% and 0.010%, respectively, and meet the requirements of hydrogen sulfide stress corrosion test (stress ring method, the same below) in the corresponding standards, the actual tensile strength of the materials may be greater than 880MPa, but not greater than 1,000MPa; the test results of hydrogen sulfide stress corrosion test shall be indicated in the design documents and type test reports for gas cylinders; in case of any changes in the designation, manufacturing unit, smelting method or hot-working method of materials, the gas cylinder manufacturing unit shall conduct hydrogen sulfide stress corrosion test again;
(9) For large capacity seamless steel gas cylinders for tube trailers and tube bundle containers containing hydrogen, natural gas or methane, the actual tensile strength of the materials after heat treatment shall be less than or equal to 880MPa, the yield ratio shall be less than or equal to 0.86, and the percentage elongation after break (A50mm) shall be greater than or equal to 20% (the tensile specimen adopts full-wall circular arc flat specimen, the same below); for large capacity seamless steel gas cylinders containing other gases, the actual tensile strength, yield ratio and percentage elongation after fracture (A50mm) of shall be less than or equal to 1,060MPa, 0.92 and 16% respectively after heat treatment.
Foreword i
1 General provisions
2 Materials
3 Design
4 Manufacturing
5 Type test
6 Supervision and inspection
7 Gas cylinder attachments
8 Filling and use
9 Periodic inspection
10 Supplementary provisions
Annex A Classification, variety and code of gas cylinders
Annex B Classification of cylinder gas and physical parameters of common gas
Annex C Comparison table between gas cylinder enterprise standard and basic safety requirements of the Regulation
Annex D Gas cylinder marks
Annex E Imported and exported gas cylinder
Annex F Application for identification of gas cylinder design documents
Annex G Gas cylinder design document appraisal report
Annex H Gas cylinder product data sheet
Annex J Application for type test of special equipment (Gas cylinder)
Annex K Sampling and management requirements for type test samples of gas cylinders and gas cylinder valves
Annex L Type test items of gas cylinders and gas cylinder valves
Annex M Type test report of special equipment (gas cylinder and gas cylinder valve)
Annex N Type test certificate for special equipment (gas cylinder and gas cylinder valve)
Annex n Number method and description of type test certificate for gas cylinder (cylinder valve)
Annex P Contact list for special equipment supervision inspection
Annex Q Notice for supervision inspection opinions on special equipment
Annex R Certificate for (manufacture) supervision and inspection of special equipment (Gas cylinder)
Annex S Safety performance supervision and inspection certificate of imported special equipment (Gas cylinder)
Annex T Gas cylinder protective cover style
Annex U Cylinder periodic inspection item
Annex V Gas cylinder periodic inspection
Attached table va List of acceptable gas cylinders for regular inspection
Attached table vb List of scrapped cylinders
Previous development (revision) of relevant rules and regulations
