Page 129 - Quick Guide to Welding and Weld Inspection by S.E. Hughes, Clifford Matthews

Codes, Standards and Documentation

○ Part 4: Elementary quality requirements
Welding procedure qualifications
Welding procedure qualification is carried out to prove that a
welded joint meets the mechanical, metallurgical and physical
properties required by a code or specification. It also enables
repeatability by allowing a systematic approach to making
the welded joint to be recorded and then used by any
qualified welder or welding operator. The welding procedure
qualification documents consist of a welding procedure
specification (WPS) and a procedure qualification record
(PQR). The PQR is also referred to as a welding procedure
qualification record (WPQR) in the European procedure
qualification standards. For the purposes of clarity this book
will use the terms PQR and WPS.
Common procedure qualification standards are:
. ASME IX: Welding and Brazing Qualifications
This specifically details the welding procedure qualifica-
tion requirements for welding in accordance with the
ASME BPV code but is also referenced by other American
standard organisations including API. Although other
standards will reference ASME IX they may specify
additional essential variables or procedure qualification
requirements.
. EN 288-2: Specification and Approval of Welding
Procedures for Metallic Materials – Part 2: Welding
Procedure Specification for Arc Welding
EN 288-2 is the only remaining part from a series of EN
288 standards covering welding procedure qualification.
The other parts have been superseded by EN ISO 15607
through to EN ISO 15614, which are standards detailing
the specification and qualification of welding procedures
for metallic materials with respect to:
. general rules;
. guidelines for a metallic materials grouping system;

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