T/CATSI 02010-2022 The method for detecting helium leak in gas cylinder air tightness
T/CATSI 02010-2022 The method for detecting helium leak in gas cylinder air tightness
Basic Information
Scope
Main technical content: To ensure the safe use of carbon fiber fully wrapped gas cylinders for vehicle-mounted compressed hydrogen, this group standard specifies the helium leak detection method used for gas cylinder air tightness testing. This group standard is formulated with reference to NB/T 47013.8-2016 "Non-destructive testing of pressure equipment - Part 8: Leak detection", GB/T 15823-2009 "Non-destructive testing - Helium leak detection method" and JISZ2331-2006 "Helium leak test method". Among them, the helium leak test method refers to JISZ2331-2006, which stipulates that the helium leak detection method used for gas cylinder air tightness testing includes the pressurized accumulation method and the vacuum chamber method. Considering the requirements of meeting the production and inspection pace of manufacturers and inspection institutions, it is stipulated that gas cylinder manufacturers and regular inspection institutions can adopt the pressurized accumulation method or the vacuum chamber method; because the accuracy of the vacuum chamber method is higher, it is stipulated that gas cylinder type test institutions should adopt the vacuum chamber method. This standard applies to hydrogen circulation and permeation tests of vehicle-mounted hydrogen storage systems, including hydrogen circulation and permeation tests at room temperature for vehicle hydrogen cylinders with a nominal working pressure not exceeding 35MPa (gauge pressure), and performance tests at room temperature and extreme temperature and air pressure cycles and permeation tests at extreme temperature for vehicle hydrogen cylinders with a nominal working pressure not exceeding 70MPa; it does not apply to adsorption hydrogen storage cylinders with internal fillers; station-mounted compressed hydrogen storage systems, etc. can refer to it for implementation.