Interpretation Detail  
Standard Designation: BPV Section IX
Edition/Addenda: 2017 Edition
Para./Fig./Table No: QW-409.1
Subject Description: Heat Input Variables
Date Issued: 01/10/2020
Record Number: 18-2947
Interpretation Number : BPV IX-19-16
Question(s) and Reply(ies):

Question 1: Shall the values used to calculate the maximum heat input be the values recorded during an individual weld pass or unit length of weld?

Reply 1: Yes

Question 2: Is the maximum heat input observed from all weld passes the maximum heat input to be recorded on the PQR?

Reply 2: Yes

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