The welding engineer writes a preliminary Welding
Procedure Specification (p WPS) for each test coupon to be welded.
A welder makes the test coupon in accordance with
the p WPS
A welding inspector records all the welding
conditions used to make the test coupon (called the as-run conditions).
An independent examiner/ examining body/ third party
inspector may be requested to monitor the procedure qualification
The test coupon is subjected to NDT in accordance
with the methods specified by the standard – Visual Inspection, MT or PT and RT
or UT.
The test coupon is destructively tested (tensile,
bend, macro tests).
The code/application standard client may require
additional tests such as hardness, impact or corrosion tests – depending on
material and application.
A Welding Procedure Qualification Record (WPQR) is
prepared by the welding engineer giving details of:
As-run welding conditions
Results of the NDT
Results of the destructive tests
Welding conditions allowed for production welding If
a third party inspector is involved he will be requested to sign the WPQR as a
true record of the test.
The stages for qualification of a welder
The welding engineer writes a WPS for welder
qualification test piece.
The welder makes the test weld in accordance with
the WPS
A welding inspector monitors the welding to ensure
that the welder is working in accordance with the WPS.
An independent examiner/ examining body/third party
inspector may be requested to monitor the test.
The test coupon is subjected to NDT in accordance
with the methods specified by the Standard (visual inspection, MT or PT and RT
or UT)
For certain materials, and welding processes, some
destructive testing may be required (bends or macros).
A welder’s Qualification Certificate is prepared
showing the welding conditions used for the test piece and the range of qualification
allowed by the Standard for production welding.
If a third party is involved, the Qualification
Certificate would be endorsed as a true record of the test.
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