Interpretation Detail  
Standard Designation: BPV Section XI
Edition/Addenda: 2019
Para./Fig./Table No: IWA-4400
Subject Description: PWHT exemption for vessel manufacture
Date Issued: 05/20/2021
Record Number: 21-665
Interpretation Number : BPV XI-1-21-03
Question(s) and Reply(ies):

Question 1: Does IWA-4411(a) permit the use of PWHT exemptions of the Construction Code for welding performed in accordance with IWA-4400?

Reply 1: Yes.

Question 2: Does IWA-4400 limit the number of times a PWHT exemption permitted by the Construction Code may be used at the same location?

Reply 2: No.

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