National Standard of the People's Republic of China. Static Vacuum Insulated Cryogenic Pressure Vessel Part 1:General Requirements

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1 ICS J 76 National Standard of the People's Republic of China Supersedes GB/T Static Vacuum Insulated Cryogenic Pressure Vessel Part 1:General Requirements Issued on Enforced Issued by the General Administration of Quality Supervision, Inspection and Quarantine Standardization Administration of the People's Republic of China (SAC) of the People's Republic of China

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3 GB/T Contents Forewords Ⅱ 1 Scope 1 2 Normative references 1 3 Terms and definitions 2 4 General requirements 3 I

4 GB/T Foreword GB/T consists of the following parts under the general title, Static Vacuum Insulated Cryogenic Pressure Vessel: Part 1: General Requirements Part 2: Material Part 3: Design Part 4: Fabrication Part 5: Inspection and testing Safety and Protection This part is the Part 1 of GB / T This part refers to the ISO :2008 Cryogenic vessels Static vacuum insulated vessels Part 1: Design, fabrication, inspection and tests (English version). This part supersedes Chapter 1 "Scope", Chapter 3 "General requirements" and some of the definitions of GB " Cryo-insulation pressure vessels". Comparing with GB GB , the amendments are as follows: Specify the scope Withdraw the numbering system of the type This Standard was proposed by the China Standardization Committee on Boilers and Pressure Vessels, and is under the jurisdiction of China Standardization Committee on Boilers and Pressure Vessels. The main Drafting Organizations: China Special Equipment Inspection and Research Institute. The main draftsmen: Binan Shou, Weiming Zhou. This standard supersedes the standards of previous editions: GB II

5 GB/T Static Vacuum Insulated Cryogenic Pressure Vessel Part 1:General Requirements 1 Scope 1.1 This part specifies the basic requirements for stationary vacuum insulated cryogenic pressure vessel (hereinafter referred to as the cryogenic vessel). 1.2 This Part applies to the following cryogenic vessels Working pressure is not less than 0.1MPa(excluding liquid column static pressure), and the product of the working pressure and the geometric volume is not less than 2.5MPa L The content and the shell is a steel constructed Method of the thermal insulation is vacuum insulation, vacuum powder insulation, vacuum fiber insulation or deep cryogenic cooling. 1.3 This part is not applicable to the following cryogenic vessels Spherical cryogenic vessels Accumulation thermal insulation cryogenic vessels Transportable cryogenic vessels Storage cryogenic vessels containing cryogenic liquid which the standard boiling point below Special cryogenic vessels for military service. 2 Normative references The following referenced documents are indispensable for the application of this part. For dated references, all subsequent amendments(not including the contents of the corrigenda)or revised edition shall not apply to this part. However, it is encouraged to study whether these latest version be applied to this Standard.For undated references, the latest edition of the referenced documents applies. GB 150 Pressure vessels GB/T Static Vacuum Insulated Cryogenic Pressure Vessel Part 2: Material GB/T Static Vacuum Insulated Cryogenic Pressure Vessel Part 3: Design GB/T Static Vacuum Insulated Cryogenic Pressure Vessel Part 4: Fabrication GB/T Static Vacuum Insulated Cryogenic Pressure Vessel Part 5: Inspection and testing GB/T Static Vacuum Insulated Cryogenic Pressure Vessel Part 5: Safety and Protection TSG R1001 Design Appraisal Regulations for Pressure Vessel & Pressure Pipe TSG R0004 Supervision Regulation on Safety Technology for Stationary Pressure Vessel 1

6 GB/T Supervision Administration for Manufacture of Boiler and Pressure Vessel Order No.22 of General Administration of Quality Supervision, Inspection and Quarantine of the People s Republic of China 3 Terms and definitions The terms and definitions established in GB 150 and the following terms and definitions apply to this document. 3.1 vacuum insulated cryogenic pressure vessel The pressure vessel, consist of inner liquid storage vessel and outer shell for maintenance of the vacuum insulation space, and with a set of complete safety accessories, instrumentation devices, and other systems to meet the operational requirements, is used for cryogenic liquid storage. 3.2 high vacuum multilayer insulation The thermal insulation space is set up with anti-thermal radiation shields that made of multi-layer insulation materials and pumped till highly vacuumed. 3.3 vacuum powder insulation The thermal insulation space is filled with the porous particle insulation materials and pumped till vacuumed. 3.4 vacuum fibre insulation Insulation space filled with fiber insulation material, and pumped till vacuumed. 3.5 vacuum insulation Vacuum insulation is defined as that the insulation space filled with or without insulation materials, and pumped into vacuumed. Insulation materials include powders, fibers, multilayer and multi-shields in multilayer materials. 3.6 working pressure Working pressure is defined as the maximum pressure that may occur at the top of the vessel(gauge pressure)under the normal operating conditions, in units of megapascals(mpa). 3.7 design pressure The design pressure is defined as the maximum set pressure at the top of the vessel, and shall be applied as the conditions of design load with the coincident design temperature. The design pressure shall be not less than the working pressure, in units of megapascals(mpa). 3.8 design temperature 2

7 GB/T The design temperature is defined as the set metal temperature of the pressure parts under normal operating conditions, i.e. the mean metal temperature through the cross section of the pressure parts. The design temperature shall be applied as the conditions of design load with the coincident design pressure, in units of degrees of Celsius( ). 3.9 static evaporation rate At the specified filling rate, the vacuum insulated cryogenic pressure vessel is put aside to reach thermal equilibrium. At this condition, the percentage of loss amount of cryogenic liquid after the natural evaporation within 24h to the cryogenic liquid mass in the effective volume of inner vessel is defined as static evaporation rate. It can be converted to the evaporation rate under the standard atmospheric pressure ( Pa)and the ambient temperature(20 ), in units of percentage per day(% / d) Specified filling rate The ratio of the liquid volume in the vessel and geometric volume, when the amount of stored liquid reaches the maximum level of the design requirements geometric volume The internal volume of the inner vessel(deducts the volume of parts inside the vessel)determined by the design geometry, in units of cubic meters(m 3 ) effective volume The maximum volume of the inner vessel filling with liquid under operation condition, in units of cubic meters(m3). 4 General Requirements 4.1 The material, design, fabrication, inspection and testing, safety and protection should fully comply with all the applicable requirements of this Part and GB / T ~ GB / T , and be necessary to meet the requirements of appropriate laws, decrees and safety technical regulations issued by the Government. 4.2 The Designers and the Manufacturers shall follow the regulations of TSG R1001 and TSG R0004 respectively, and shall obtain the corresponding qualification certificates issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China (hereinafter referred to as AQSIQ). 4.3 The Manufacturers shall carry out the type test. The low temperature performance testing shall be carried out by a type test agency which recognized by the AQSIQ, and the type test agency is responsible for issuing the low temperature performance type test report. Type test should be carried again if there is any change occurred at main design parameters, the main material, structure type, the key fabrication processes or the service condition,so that the product properties at low-temperature are affected. 4.4 The fabrication process of the Manufacturers shall be under the supervision of the special 3

8 GB/T equipment inspection agencies, and the special equipment supervision and inspection agency is responsible for issuing the certificate of special equipment manufacturing supervision and inspection. 4.5 Designer The Designer is responsible for the correctness and completeness of all the design documents The design documents should include the following documents a) Design calculations(including at least the volume calculation, the calculations of load bearing capacity of the pressure containing components, the calculation of thermal insulation performance, the calculation of load bearing capacity of support structure, the calculation of discharge capacity of safety relief devices, etc.); b) Design drawings(including at least the assembly drawing, the flow chart of piping system with the vessel, if necessary, the basic conditions diagram shall be provided) c) Design specification; d) Technical specifications for fabrication; e) Installation and maintenance manual; f) Risk assessment report(while required by the relevant regulations or the commissioning party of the design) The Designer shall keep all the design documents during the design life of the vessel The assembly drawings and design calculations shall be stamped with the qualification seal of the pressure vessel Designer The assembly drawings or the vessel layout diagram should indicate following issues: a) Name, model, and category of pressure vessels, regulations and standards for the design and fabrication; b) Working conditions, including working pressure, working temperature, toxicity of the medium, explosion damage degree,etc. c) Design conditions, including design temperature, design loads(including pressure, and all sorts of loads to be considered), the medium(composition), corrosion allowance, welding joint efficiency, natural condition, and the limited contents of corrosive medium for storage pressure vessels while the material with any stress corrosion tendency. d) Design service life(cycle number for vessels requiring fatigue analysis); e) The grades and standards of materials of main pressure containing part f) The calculation thickness or the design thickness of the inner cylinder and the inner head; g) The geometric volume and the effective volume of the inner vessel h) Specified filling rate; i) Vessel weight j) Static evaporation rate; k) Requirements for non-destructive testing m) Requirements for proof pressure test and leak test n) Requirements for the specification and performance of safety accessories o) Thermal insulation method 4

9 GB/T p) Requirements for corrosion-proof q) Location and natural conditions for the pressure vessel service(including temperature, the seismic intensity, loads of wind and snow, etc.) r) Location of the product nameplate 4.6 Manufacturer The Manufacturer shall ensure the construction in conformity with the requirements as prescribed in the design documents. Any alternation to the original design should be approved by the original Designer in written, and shall be recorded in details The Manufacturer shall develop and improve the quality plan before the fabrication. The contents of the quality plan shall include at least the control points, inspection items, and conformity criterion for fabrication process of pressure vessels or pressure containing parts During the fabrication process and after the completion of construction, the inspection department of the Manufacturer shall carry out all sorts of inspection and testing in accordance with specifications of this Standard and design drawings, issue inspection reports and test reports, and is responsible for the correctness and completeness of the reports For each vessel, the Manufacturer shall at least retain the following technical documents for review during the design life of the pressure vessel a) fabrication process drawings or manufacturing process cards b) material certificates and bills c) welding records of the tank welder d) the Manufacturer s records required by the relevant standards e) non-destructive testing reports and films f) The inspection and test reports during the fabrication process and after the completion g) The original design drawings and as-built drawings(at least including the assembly drawing, flow chart of piping system, if necessary, the basic condition to be provided) h) The certificate of special equipment manufacturing supervision and inspection issued by the supervisory inspection agency After ensuring the product quality are satisfying with the requirement of this Standard and drawings, the Manufacturer shall fill in a Product Certificate, and submit it to the User after confirmed by a supervisory inspection agency. The agency shall be approved by AQSIQ 5