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RE: [MW:17566] Welding Position & Backing in PQR

By Materials & Welding
Dear Ali,
 
Please refer the below for your query
 
Position:
 

QW-203 Limits of Qualified Positions for

Procedures

Unless specifically required otherwise by the welding

variables (QW-250), a qualification in any position qualifies

the procedure for all positions. The welding process

and electrodes must be suitable for use in the positions

permitted by the WPS. A welder or welding operator making

and passing the WPS qualification test is qualified for

the position tested. See QW-301.2.

 

Backing:

  
 

QW-251.1 Types of Variables for Welding

Procedure Specifications (WPS). These variables (listed

for each welding process in tables QW-252 through

QW-265) are subdivided into essential variables, supplementary

essential variables, and nonessential variables

(QW-401). The "Brief of Variables" listed in the tables

are for reference only.

 
Date: Fri, 26 Apr 2013 11:27:25 +0400
From: mhaskar.aly@gmail.com
To: materials-welding@googlegroups.com
Subject: [MW:17560] Welding Position & Backing in PQR

Dear Friends,
Is welding position & backing is the criteria for PQR;
 
Can we  use any position , with or without backing for PQR...and we don't have any restriction on above parameters
 
 
 
Kindly clarify as per ASME SEc IX
 
Ali
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