Complying with low temperature and low stress working conditions, when the design temperature is -30 degrees, the material should not undergo low temperature impact
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There is a piece of equipment with a design temperature of -30 degrees, but it complies with low-temperature and low-stress working conditions. After adding 50 degrees to the design temperature, it is higher than -20 degrees. At this time, this equipment does not need to be designed as a low-temperature pressure vessel. According to GB4.2.8, do the materials of this equipment need to undergo low-temperature impact testing?
Comply with low temperature and low stress working conditions? Need to do -30 degree low temperature impact test
Low temperature and low stress working conditions are to avoid all constraints of low temperature.
Personally think: According to C2.1.4d) in Appendix C of GB150-98, under low temperature and low stress working conditions, materials do not need to undergo low temperature impact testing.