Dear Martin,
48 hours is required waiting time after the PWHT is completed before starting the NDT.
cheers,
madhan
On Fri, Feb 7, 2014 at 7:25 PM, Martin Prad <martin_prad@hotmail.com> wrote:
--Hello,
Material is AISI4130 welded few monts ago. A stress releif is applied now. How many hours are required to wait after a treatment as a cool down time to start NDT? can you shed a light on this please? Construction and inspection code is B31.3. I reviewed the code but couldn't find anything about the time.
regards
Martin.
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