According to ASME B31.3 "K323.3.4 Test Temperatures", test temperature of impact test shall not be higher than "the lowest temperature at which a piping component or weld will be subjected to a stress greater than 41 MPa (6ksi)" Does it mean that impact test is not required when highest stress is below 41 MPa ? Or is there any other requirement in the code ? Anyone who knows about this code, help me please!
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