Some standard content:
B
Industry Standards of the People's Republic of China
JB/T47802002
Liquefied natural gas tank containers
Tank containers for liquefied natural gas200211-28 Released
2003- 03-01 Implementation
National Economic and Trade Commission issued
Announcement
No. 89 of 2002
Published the "Liquefied Natural Gas Tank Container" pressure vessel industry standard
The State Economic and Trade Commission approved the "Liquefied Natural Gas Tank Container" as the pressure vessel industry standard, with the standard number JB/T4780-2002. It is now announced and will be implemented from March 1, 2003.
This standard is published by the National Pressure Vessel Standardization Technical Committee. National Economic and Trade Commission of the People's Republic of China November 28, 2002
Foreword
Introduction
Fan Garden
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3
4
5
6
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Normative references
Terms and definitions||tt ||General principles·
Technical requirements
Test methods
Inspection rules
Marks, logos··
Factory documents
Appendix A ( Normative appendix)
Single
LNG tank periodic inspection
Item
Times
Dentong
Standard Gutong|| tt||Electronic classics
Fee
JB/T 4780--2002
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JB/T 4780—2002Www.bzxZ.net
This standard is released for the first time.
Foreword
This standard complies with the "Safety Technical Supervision Regulations for Pressure Vessels" of the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, the "Container Inspection Regulations" of the China Classification Society, and the "International Railway Regulations for the Transport of Dangerous Goods" of the International Union of Railways. As well as the provisions of the International Maritime Organization's "International Regulations for the Transport of Dangerous Goods by Sea" and the "International Convention for the Safety of Containers 1972", Appendix A of this standard is a normative appendix. This standard is proposed by Xinjiang Guanghui Industrial Investment (Group) Co., Ltd. This standard was approved by the National Economic and Trade Commission. This standard is under the jurisdiction of the National Boiler and Pressure Vessel Standardization Technical Committee. This standard was drafted by the Mobile Pressure Vessel Sub-Technical Committee of the National Boiler and Pressure Vessel Standardization Technical Committee. The main drafting units of this standard: Xinjiang Guanghui Industrial Investment (Group) Co., Ltd., Zhangjiagang Shengdain Chemical Machinery Co., Ltd., Shanghai Chemical Equipment Co., Ltd., Shanghai Jiao Tong University, China Classification Society Wuhan Standardization Research Institute, Jiangxi Oxygen Making Machinery Factory, Xi'an Vehicle Factory, Jilin Chemical Group Machinery Co., Ltd., Shanghai Boiler and Pressure Vessel Inspection Institute. The main drafters of this standard: Yang Yang, Wang Rongshun, Zhou Weiming, Xiangdong, Du Shaolin, Wei Yongbiao, Wang Haitao, Fang Chuang, Zhao Chanxing, Zhan Hua, Li Lang, Zheng Jixi, Cui Minghui, Tang Xiaoying.
This standard is entrusted to the National Boiler and Pressure Vessel Standardization Technical Committee to be responsible for interpretation. I | Chemical raw materials, their application scope continues to expand. The implementation of the "West-East Gas Transmission" project is an important measure for my country to optimize energy supply, ensure energy security and realize the sustainable development strategy of the national economy during the "Tenth Five-Year Plan" period. As an important supplement to the national "West-East Gas Transmission" pipeline project, with the support of the Xinjiang Uygur Autonomous Region government, Xinjiang Guanghui Industrial Investment (Group) Co., Ltd. has successfully developed liquefied natural gas storage and transportation technology and contributed to the national standardization of boiler and pressure vessels. The Technical Committee Mobile Pressure Vessel Sub-Technical Committee proposed the proposal for the preparation of this standard. In order to implement the relevant spirit of the "Regulations on the Management of Dangerous Goods" promulgated by the State Council and ensure the safety and reliability of LNG cylinder container products, Shoubinan, the National Technical Committee for Standardization of Boiler and Pressure Vessels, in conjunction with the relevant government departments, the General Administration of Quality Supervision, Inspection and Quarantine, issued the Boiler and Pressure Vessel Safety Gao Jixuan of the Supervision Bureau, Zhang Jinde and Haitao of the Transportation Bureau of the Ministry of Railways, Luo Luodin and Chen Zhengcai of the Water Transport Department of the Ministry of Transport, and Wang Haitao of the Industrial Products Department of China Classification Society jointly participated in the preparation of this standard. The formulation of this standard follows the principles of extensive participation and consensus and reflects the purpose of standardization work to serve the market and national economic construction.
1 Scope
Liquefied natural gas tank container
JB/T 4780—2002
This standard specifies the requirements for liquefied natural gas tank containers (hereinafter referred to as LNG tanks) Technical requirements, test methods, inspection rules, signs and markings, and periodic inspection of LNG tank containers, etc. This standard applies to vacuum-insulated LNG tanks with a design pressure not greater than 1.0MPa. The requirements set forth in this standard are basic requirements. LNG tanks that comply with this standard can be suitable for road, railway and waterway transportation as well as intermodal transportation between these modes of transportation.
2 Normative reference documents
The clauses in the following documents become the clauses of this standard through reference in this standard. For dated reference documents, all subsequent amendments (excluding corrigenda) or revisions do not apply to this standard. However, parties to an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. . For undated referenced documents, the latest edition applies to this standard. GB150 steel pressure vessels
GB/T1413-1998 Series 1 Container classification, dimensions and rated quality GB/T1835-1995 Technical conditions for container corner fittings GB/T1836-1997 Container codes, identification and marking GB3198-1996 Industrial Use pure aluminum foil
GB6654-1996 Steel plate for pressure vessels
GB9969.1--1998 General instructions for use of industrial products GB/T 14976-1994
Stainless steel seamless steel pipe for fluid transportation| |tt||5 Series 1 Technical requirements and test methods for liquid, gas and pressurized bulk tank containers GB/T 165631996
GB 18442--20011
Low temperature insulated pressure vessels||tt ||GB/T 18443.1—2001 1
Test methods for low-temperature insulated pressure vessels
GB/T 18443.22001
Test methods for low-temperature insulated pressure vessels
GB/T 18443.3- -20011
Test methods for low-temperature insulated pressure vessels
Volume measurement
Vacuum measurement
Leak rate measurement
GB/T 18443.4--2001|| tt | Steel pressure vessel welding process qualification JB/T4709 Steel pressure vessel welding regulations JB4728 Stainless steel forgings for pressure vessels
JB4730 Non-destructive testing of pressure vessels
JB4744 Mechanical property inspection of welded test plates for steel pressure vessel products JB/T4746 Heads for Steel Pressure Vessels
Static Evaporation Rate Measurement
Pressure Vessel Safety Technical Supervision Regulations (1999 Edition) The former State Bureau of Quality and Technical Supervision promulgated the examination and management of welders for boiler pressure vessels and pressure pipes Rules (2002 version) The General Administration of Quality Supervision, Inspection and Quarantine promulgated the Pressure Vessel Registration Management Rules (1993 version) The former Ministry of Labor promulgated the Inspection Regulations for Pressure Vessels in Use (1990 version) The former Ministry of Labor promulgated the Materials and Welding Specifications (1998) China Classification Promulgated by the Society 1
JB/T4780-2002
International Maritime Dangerous Goods Code (2000 Edition) Published by the International Maritime Organization 3 Terms and Definitions
The following terms and definitions apply to this standard. 3.1 | components.
3.2
High vacuum multi-layer insulation high vacuum multi-layer insulation is to set multiple heat-proof radiation screens separated by thermal insulation materials in the interlayer space between the outer shell and the inner container of the LNG tank. The pressure in the vacuum interlayer at the operating temperature The thermal insulation method is formed by being lower than 1.0×10-2Pa. 3.3
Vacuum powder insulation vacuum powder insulatior is a thermal insulation formed by filling the interlayer space between the outer shell and the inner container of the LNG tank with porous particulate insulation material. At the operating temperature, the pressure in the vacuum interlayer is lower than 2.0×10-1Pa. Method 3.4
operating pressure
Working pressure refers to the highest gauge pressure that may be reached at the top of the inner vessel under normal operating conditions. The unit is MPa. 3.5 | | tt | The unit is MPa.
3.6
design temperature design temperature
The design temperature referred to in this standard has the following meanings: a) For inner vessels, internal components and components in contact with liquefied natural gas, they are likely to reach Minimum metal temperature. This temperature is the boiling point of the liquefied natural gas contained. It should also meet the requirements of the test conditions. Take the lower value of the two, in °C; b) For the shell and external components, it is the temperature under the operating environmental conditions. Minimum metal temperature, unit is ℃; c)
For the components connected between the inner vessel and the outer shell, such as supports, liquid inlet pipes and discharge pipes, these are the extreme temperatures that these components may reach, in ℃.
3.7
Inner vessel inner vessel
The inner vessel referred to in this standard is the pressure vessel containing liquefied natural gas in an I.NG tank. 3.8 | | tt | | outer shell | | tt | 3.9
Static evaporation rate static evaporationLNG tank reaches 90%~100% rated full rate. After the liquefied natural gas (or liquid nitrogen) standing inside reaches thermal equilibrium under atmospheric pressure, the liquefied natural gas (or liquid nitrogen) lost by natural evaporation within 24 hours ( (or liquid nitrogen) mass and the percentage of the mass of liquefied natural gas (or liquid nitrogen) under the effective volume of the LNG tank, converted into the evaporation rate value under standard conditions (0°C, 101325Pa), the unit is %/d. 2
3.10
3.11
The vacuum degree of the interlayer at normal temperature when the LNG tank is vacuumed and sealed, the unit is Pa. Vacuum interspace leak rate vacuum interspace leak rate is the amount of gas leaking into the vacuum interspace per unit time, the unit is Pa m/s. 3.12 | | tt | 3.13
The vacuum interspace outgassing and leak rate is the sum of the vacuum interspace outgassing and leak rate of the LNG tank, and the unit is Pa·m2/s. 3.14 | | tt | Rated filling rate, and the time required for the inner vessel pressure to begin to rise to the point where the safety valve takes off after the gas phase valve is closed. 3.15 | | tt | 3.16
Rated mass rating
The sum of the empty mass of the LNG tank container and the mass of the LNG contained at the rated full rate. 3.17 | 3.18
Safety attachments
refers to emergency shut-off devices, static conduction devices, safety relief devices, pressure gauges, flame arresters and liquid level gauges, etc. 4 General principles
4.1 In addition to complying with the provisions of this standard, the design, manufacture, testing, inspection and acceptance of LNG tank containers shall also comply with relevant laws, regulations and rules promulgated by the state.
4.2 The design and manufacturing units of LNG tank containers should hold the corresponding qualification certificates issued by the national safety supervision agency. 4.3 LNG tank container manufacturing units should conduct sample container type tests according to models, and the China Classification Society will issue a movable tank approval certificate. 4.4 After completing the type test of the sample container according to the model, the LNG tank container manufacturing unit shall pass the technical review of the National Technical Committee for Standardization of Boiler and Pressure Vessels and submit the overall design drawing, tank drawing, piping diagram, type test and technical review report. Only with approval from the national safety supervision agency can it be put into formal production.
4.5 Imported LNG tanks shall comply with the provisions of this standard. If the technical performance of imported LNG tanks exceeds the scope of this standard, it must pass the technical review of the National Boiler and Pressure Vessel Standardization Technical Committee and be approved by the national safety supervision agency and China Classification Society before it can be put into use.
4.6 The design unit shall be responsible for the correctness and completeness of the design documents of the LNG tank. The design documents shall at least include the following documents: a) Design calculation sheet (including calculation of the strength of the main pressure components and the safe discharge volume of the inner vessel) calculation, inner container volume calculation, support structure calculation, thermal calculation and frame calculation, etc.); 3
JB/T 4780—2002
b) design drawing;
c) design Instructions;
d) Test outline;
e) Instructions for use.
4.7 The manufacturing unit of LNG tank containers shall manufacture according to the design drawings. If the original design needs to be modified, approval from the original design unit shall be obtained. Modifications to the design drawings and substitution of materials that affect product performance and safety must be approved by the design drawing approval unit before they can be implemented.
4.8 The inspection department of the manufacturing unit shall conduct various specific inspections and tests on the LNG tank containers in accordance with the provisions of this standard and drawings during the manufacturing process and after completion, and issue an inspection report, and verify the accuracy and accuracy of the report. Responsible for integrity. 4.9 Each LNG tank container should have at least the following technical documents for reference, and the storage period should not be less than 7 years. After 7 years, it can be transferred to the user for safekeeping if the user needs it.
a) Manufacturing process drawing or manufacturing process card;
b) Material certification documents and material lists;
c) Welding process documents;
d) Welding records;
e)
Welder’s identification mark;
non-destructive testing report;
f)
g)
pressure test report;| | tt |
k) Records of items allowed to be selected by manufacturers in standards; 1) Inspection records of LNG tank container frame dimensions during the manufacturing process and after completion; m) As-built drawings of LNG tank containers;
n) Mobile tank approval certificate issued by China Classification Society (original). 4.10 After the LNG tank container product quality meets the requirements of this standard and drawings, the manufacturing unit must fill in a product quality certificate and obtain confirmation from the inspection agency before delivering it to the user.
5 Technical requirements
5.1 General requirements
5.1.1 The thickness of the inner container shell of the LNG tank after molding shall not be less than the minimum thickness specified in the drawing, and shall not be less than 3mm without corrosion allowance quantity).
5.1.2 LNG tank containers should be equipped with emergency treatment document storage devices. 5.1.3 LNG tanks used for railway transportation can absorb at least 4 times the rated mass impact caused by typical mechanical vibration at the rated full rate.
5.2 Materials
5.2.1 Tank materials
5.2.1.1. The quality and specifications of the materials used for the tank should comply with the provisions of Article 10 of the "Pressure Vessel Safety Technical Supervision Regulations" (1999 Edition), and comply with the provisions of the corresponding national standards and industry standards. 5.2.1.2 The materials used for the main pressure components of the tank should be retested and can only be used after passing the test. The LNG tank container manufacturing unit shall be responsible for the authenticity and consistency of the materials used, material marks and material quality certificates, otherwise they shall not be used. 5.2.1.3 For inner packaging materials, the ratio of the material’s standard yield point at room temperature (or 0.2% yield strength) to the lower limit of the standard tensile strength shall not be greater than 0.85. The elongation of austenitic stainless steel (85) should not be less than 35%, and the elongation of other materials (,) should not be less than 20%. 4
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