Qualification and welding procedure certification
Welder’s qualification test certificate is a proof
that the welder can perform welding operations by a certain welding process on
a particular base material and in certain welding positions.
In order for the company to perform welding
operations on a particular product, it is necessary to have approved Welding
Procedures (WPS). In this way, it is proved that the welding by a certain
welding process and certain welding consumable, meets the required characteristics
of the welded joint, both mechanical and metallurgical characteristics.
HOW TO QUALIFY WELDER AND WELDING
Prior to the Welding Procedure (WPS), it is
necessary to test the welding procedure and create a welding procedure record
(WPAR / PQR). Our company provides a complete service for welding procedure
• Preparation of preliminary welding procedure
• Welding of test specimens with all the most
commonly used welding processes in our workshop, or in client’s workshop.
• Non-destructive and destructive tests according
to the welding procedure qualification requirements.
• Processing the results and issuing required
records (WPAR and WPS).
Certification of welding procedures is most commonly
performed according to ISO 15614-1: 2017 and, where applicable, according to
other applicable standards and regulations for welding procedure certification,
according to the specific client’s requirements.
Welder’s certification can be done in in our
workshop, in client’s workshop or directly on the site. Welders’ certificate is
valid for 2 (or 3) years, after which it has to be extended for another 2
years. After the expiration of 4 years, it’s necessary to renew certificate.
The certificate is only valid if the welder is controlled at least every 6
months for the welding work that is covered by the welder’s certificate. If the
certificate is not properly and regularly filled, the certificate is considered
invalid and needs to be renewed.
After welding test samples and satisfactory results
after a visual inspection, non-destructive testing (RT, UT, MT, PT) and
additional destructive testing of weld sample (bend test, tensile strength
test, toughness test, etc.) according to the specific requirements of the
standard for welding procedure certification.
After a successful certification, the Welder’s
qualification test certificate is issued by either our Engineer or Welding
Technician (IWE/EWE and/or IWT/EWT) or by the Classification Society.
test is carried out under the supervision of welding specialists with the
required EWF certificates (IWE/EWE and/or IWT/EWT) or, if necessary, under the
supervision of one of the Classification Societies (LR, DNV, BV, HRB and
others) and according to the specific client’s requirements.