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  1. Horty

    UCS-56 PWHT

    I have a vessel that is 3/4" thick P1 G1 material. time at temperature as per UCS-56 stated 1 Hr per in, 15 minutes min. Does this get a 45 minute hold time, or the 15 minutes min? Same question for mandatory 1.5" is that 90 mins? or 1 and 15 minute minimum intervals like it does for Above 2"?

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