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Is it necessary to perform both non destructive and destructive testing?
Wiki User
∙ 10y ago
NO.
Destructive testing will destroy the test coupon on new welded construction, non-destructive tests are often done as well. Non-destructive testing will not destroy any repair made and is preferable to destroying a repair.
HOWEVER:
Pressure vessels repaired by welding MUST be tested by destructive (hydrostatic) testing as the design of the vessel has a built in factor of safety that ensures the vessel won't be destroyed at the pressure used for the test.
If a destructive test is done then no NDT is required usually.
Wiki User
∙ 10y ago
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