Dear All,
As we gone through ASME B31.1 2014 edition, it was found that for PWHT refer AWS D10.10. As per AWS D10.10, we need at least 4 thermocouples per joint(minimum), that is 1 for controlling purpose and 3 for monitioring. The monitoring thermocouples need to be attached at Soak Band(SB),HB & GCB respectively for the verification of difference in temperature with respect to the controlling thermocouple. Is it mandatory to attach all these thermocouples during PWHT for ASME S Stamp job/piping? Or is it enough to attach the controlling thermocouple alone to check the soaking temperature, rate of heating/cooling etc. Kindly reply by referring clause.
Thanks & Regards
Rejoy Thomas
STF SpA
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
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