Number Detection object Number Test item 1 Fixed low temperature insulation pressure vessel 1 Effective volume 2 Sealing vacuum 3 Cold vacuum 4 Air leakage rate 5 Leakage rate 6 Static evaporation rate 7 Macro inspection 8 Ultrasonic testing 9 Magnetic particle inspection 10 Penetration test 11 Wall thickness measurement 12 Pressure/air tightness test 2 Cryogenic liquid car/railway tank car 1 Effective volume 2 Sealing vacuum 3 Cold vacuum 4 Air leakage rate 5 Leakage rate 6 Static evaporation rate 7 Pressure/air tightness test 8 Macro inspection 9 Wall thickness measurement 10 Ground resistance 11 Ultrasonic testing 12 Radiographic inspection 13 Magnetic particle inspection 14 Penetration test 3 Cryogenic liquid tank container 1 Effective volume 2 Sealing vacuum 3 Cold vacuum 4 Air leakage rate 5 Leakage rate 6 Static evaporation rate 7 Hold time 8 Pressure/air tightness test 9 Macro inspection 10 Wall thickness measurement 11 Ground resistance 12 Ultrasonic testing 13 Radiographic inspection 14 Magnetic particle inspection 15 Penetration test 4 Cryogenic insulated gas cylinder 1 Vacuum Degree 1 Air leakage rate 2 Leakage rate 3 Static evaporation rate 4 Heat leakage 5 Withstand voltage test 6 Macro inspection 5 Low temperature insulated pipe 1 Vacuum Degree 2 Air leakage rate 3 Static evaporation rate 4 Heat leakage 5 Withstand voltage test 6 Macro inspection 6 Cryogenic valves (low temperature gate valves, globe valves, check valves, ball valves, butterfly valves) 1 Low temperature sealing performance 2 Cold action 3 Low temperature impact performance 7 Safety valve 1 Nominal diameter 2 Runner diameter 3 Nominal pressure 4 Set pressure 5 Rated discharge pressure 6 Opening height 7 Rated displacement 8 Opening and closing pressure difference 8 Rupture disk 1 Geometric size 2 Sealing performance 3 Burst pressure 4 Burst pressure tolerance 5 Discharge volume 6 Flow resistance coefficient 7 stress test 9 Emergency shut-off valve 1 Mechanical properties of valve body 2 Low temperature impact performance 3 Shell strength 4 Penetration test 5 Leak test 6 Air tightness test 7 Action test 8 Natural closure test 9 Vibration test 10 Minimum wall thickness of valve body 10 Thermal conductivity of cryogenic container materials and internal support materials 1 Thermal Conductivity 11 Thermal insulation material for cryogenic containers (expanded perlite) 1 Loose/vibration density 2 Loose/vibration density 3 granularity 4 Mass moisture content 5 Angle of repose 6 Equivalent thermal conductivity 12 Multilayer insulation material 1 Thermal Conductivity 2 Apparent thermal conductivity 3 Deflation rate 4 Temperature resistance 5 compatibility 6 tensile strength 13 Adsorption material for vacuum container 1 Adsorption capacity 2 Specific surface area 3 The average particle size 4 Pore size distribution 14 Air bath vaporizer 1 Weld quality 2 Gasification 3 Pressure/air pressure test