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GB/T 34347-2017: Periodic inspection and evaluation of cryogenic insulated cylinders Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid
Similar standardsGB/T 34347-2017: Periodic inspection and evaluation of cryogenic insulated cylinders---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT34347-2017NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 23.020.30 J 74 Periodic inspection and evaluation of cryogenic insulated cylinders Issued on. OCTOBER 14, 2017 Implemented on. APRIL 01, 2018 Issued by. General Administration of Quality Supervision, Inspection and Quarantine of PRC; Standardization Administration of PRC. Table of ContentsForeword... 3 1 Scope... 4 2 Normative references... 4 3 Inspection agencies... 5 4 Inspection of welded insulated gas cylinders... 5 5 Inspection of gas cylinder for automobile... 10 6 Other work... 13 Appendix A (Informative) Daily inspection record of cryogenic insulated cylinders 14 Appendix B (Informative) Method for measuring the depression size of the shell of cryogenic insulated cylinders... 15 Appendix C (Informative) Periodic inspection report of welded insulated cylinder.. 17 Appendix D (Informative) Periodic inspection report of LNG cylinders for automobiles ... 21ForewordThis standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard was proposed by AND shall be under the jurisdiction of the National Gas Cylinder Standardization Technical Committee (SAC/TC 31). Drafting organizations of this standard. Dalian Boiler and Pressure Vessel Inspection and Research Institute, Changzhou Branch of Jiangsu Special Equipment Safety Supervision and Inspection Research Institute, China Special Equipment Inspection and Research Institute, Shanghai Special Equipment Supervision and Inspection Technology Research Institute, Beijing Tianhai Industry Co., Ltd., Ultra-Cryogenic Engineering System (Changzhou) Co., Ltd., Guangdong Special Equipment Inspection and Research Institute, Jiangsu Baocheng Special Equipment Inspection Co., Ltd., Suzhou Rongtai New Special Equipment Technology Inspection Co., Ltd., Te Anjie (Jiangsu) New Energy Technology Co., Ltd.. The main drafters of this standard. Wang Liping, Han Bing, Ning Ye, Yin Airong, Zhang Hejun, Xu Huixin, Tan Yue, Huang Qianghua, Tian Feng, Yang Jin, Yin Jinsong. Periodic inspection and evaluation of cryogenic insulated cylinders1 ScopeThis standard specifies the basic methods and technical requirements, for periodic inspection and evaluation of in-use cryogenic insulated cylinders (including welded thermal insulation gas cylinders and automotive liquefied natural gas cylinders). This standard is applicable to the periodic inspection and evaluation of the refillable welded insulated gas cylinders -- which are used under normal ambient temperature (- 40 °C ~ 60 °C), whose medium is liquid oxygen, liquid nitrogen, liquid argon, liquid carbon dioxide, liquid nitrous oxide, liquefied natural gas and other cryogenic liquids, whose design temperature is not higher than -196 °C, whose nominal working pressure is 0.2 MPa ~ 3.5 MPa. This standard is also applicable to the periodic inspection and evaluation of the refillable welded insulated gas cylinders for automobile use -- which is used at normal ambient temperature (-40 °C ~ 60 °C), whose medium is liquefied natural gas, which is used as an automobile fuel tank, whose design temperature is not higher than -196 °C, whose nominal working pressure is 0.6 MPa ~ 3.5 MPa.2 Normative referencesThe following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) is applicable to this standard. GB/T 3864 Industrial nitrogen GB/T 12135 Technological specification for inspection agency of gas cylinders GB/T 12137 Methods for leakage test of gas cylinders GB/T 16918 Bursting disc safety devices for gas cylinders GB/T 18443.5 Testing method of performance for vacuum insulation cryogenic equipment - Part 5.Static evaporation rate measurement JB/T 6896 Surface clearness of air separation plant3 Inspection agenciesThe inspection agency, that undertakes the periodic inspection of gas cylinders, shall meet the requirements of GB/T 12135, AND be approved by the special equipment safety supervision and management authority, in accordance with TSG Z7001.4 Inspection of welded insulated gas cylinders4.1 Inspection period 4.1.1 The period of periodic inspection of gas cylinders shall not exceed 3 years. 4.2 Inspection items The inspection items of gas cylinders include external inspection, safety accessories inspection, valve and pipeline inspection, air tightness test, static evaporation rate testing. 4.3 Preparation for inspection 4.3.1 Review of technical archives 4.3.2 Record 4.3.2.1 Check and record the manufacturing marks and inspection marks, on the nameplate of the gas cylinders one by one. The records include the country of manufacture, the cylinder manufacturing license number, the name of the manufacturer, the cylinder number, the product standard number, the standard name, the year and month of manufacture, the nominal working pressure, the test pressure of the liner, the medium contained, the nominal volume, the maximum filling volume, the net weight of gas cylinder, the date of last inspection. 4.3.3 Disposal of in-cylinder medium 4.3.3.1 Appropriate methods shall be taken, to discharge the medium in the cylinder and properly handle it, under the conditions of ensuring safety, hygiene, non-polluting the environment. 4.3.3.2 For gas cylinders with unknown medium, valves that cannot be opened, safety accessories that fail, they shall be stored separately and properly disposed of. 4.3.4 Surface cleaning and accessory removal 4.5 Inspection of safety accessories, valve, pipeline 4.5.1 Inspection of safety accessories 4.5.1.1 The safety accessories of the gas cylinder include. pressure gauge, safety valve, bursting disc, level gauge. Safety accessories shall meet the relevant requirements of TSG RF001, TSG ZF003, GB/T 16918, national standards or industry standards. It shall select the products produced by manufacturing enterprises, that have obtained corresponding manufacturing licenses, according to regulations. The models, specifications, technical parameters shall be definite and clear. 4.5.1.5 Check the liquid level gauges one by one. It shall be judged as unqualified, if finding the following defects. 4.5.2 Valve and pipeline inspection 4.5.2.1 Visually inspect OR check the cylinder valves one by one by a magnifying glass of 5X ~ 10X. It shall be judged as unqualified, if finding the following defects. 4.5.3 Assembly of safety accessories and valves 4.5.3.1 After all the accessories, which are removed from the cylinder body, are inspected and qualified, the surface shall be treated accordingly, according to the special requirements of the medium contained; the assembly shall be carried out, according to the requirements of the instruction manual. The seals used in the assembly shall not have chemical reaction with the contained medium. 4.7 Static evaporation rate detection The gas cylinders shall be tested for static evaporation rate one by one. The detection method shall be the gas mass flow meter method or the weighing method.5 Inspection of gas cylinder for automobile5.1 Inspection period 5.1.1 The period of periodic inspection of gas cylinders shall not exceed 3 years. 5.2 Inspection items The inspection items of gas cylinders include external inspection, safety accessories inspection, valve and pipeline inspection (limited to the pipeline system within the gas cylinder product range), fixture inspection, air tightness test, static evaporation rate detection. 5.3 Preparation for inspection 5.4 External inspection Carry out visual inspection OR use a magnifying glass of 5X ~ 10X to inspect the outer surface of the gas cylinders one by one. It shall be judged as unqualified, if there are following defects. 5.5 Inspection of safety accessories, valves, piping (limited to piping systems within the scope of gas cylinder products) 5.5.1 Inspection of safety accessories 5.5.3 Assembly of safety accessories and valves All accessories, which are removed from the cylinder, shall be assembled, according to the requirements of the instruction manual, after passing the inspection, respectively. The seals, which are used during assembly, must not react chemically with LNG. 5.6 Fixture inspection For the inspection of fixtures, it shall be judged as unqualified, if the following defects are found. 5.7 Air tightness test 5.7.1 The assembled gas cylinders shall be tested for air tightness one by one. 5.8 Detection of static evaporation rate Gas cylinders shall be tested for static evaporation rate one by one. The detection method shall be the gas mass flow meter method or the weighing method. The test method shall refer to the requirements of GB/T 18443.5.6 Other work6.1 All gas cylinders, that have passed the inspection, shall be marked with regular inspection marks and sprayed with inspection color codes, in accordance with the provisions of TSG R0006. 6.2 The gas cylinders, that are determined to be unqualified after inspection and need to be repaired, shall be sent to the original manufacturer OR the organization entrusted by the original manufacturer, for repair. 6.3 The inspector shall fill the cylinder inspection and evaluation results, in the cylinder's periodic inspection report (refer to Appendix C or Appendix D for the report format). 6.4 For the gas cylinders judged to be scraped, it shall mark the "Scrap" on the conspicuous position of the gas cylinders. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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