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EN 15609 WPS: Welding instruction is a form prepared in accordance with the relevant Project standard codes, containing the details of the weld mouth, the welding method to be used, the type and diameter of the electrode and/or welding wire, current, volt, welding position, number of welding passes and similar information.
– EN 15614 WPQR:
According to the standards, it is a report stating that the welding method, material group and welding material are compatible for each weld to be made, and that the welds are made in accordance with the project standard, mechanical tests are carried out and the results are appropriate. A WPQR can support more than one WPS within its scope of validity. WPQR preparation and tests must be performed and approved under the supervision of Independent Control Organizations (Third Party Inspection Firms).
Our Services for Companies and Welders are listed below;
– ASME SEC. IX WPQ, WPS/WPQR Certification:
For a pressure equipment, it is of great importance that the welding area is as strong as the main material. Because the pressure acting on the main material in a pressure vessel also affects the sources. Welds should also have yield strength and other mechanical properties equivalent to the base material. Therefore, one of the most important and critical areas in welded manufacturing is the manufacture of pressure vessels and boilers. Proving the welding procedures with mechanical tests and ensuring that the personnel who will use these approved procedures will make solid welds is the basis of a production in accordance with the standards in this sector.
– API 1104 WPQ, WPS/WPQR Certification:
This standard provides qualified welders and method approval for the production of high quality welds using approved welding procedures, materials and equipment for pipelines and related facilities. The most reassuring stage of the pipeline construction work to the contractor and the administration, technically and financially, is to prove the welding procedures to be used by mechanical tests and to ensure that the personnel who will use these approved procedures will make solid welds.
– AWS D1.1 WPQ, WPS/WPQR Certification:
Determining the competence level of Steel Structure Welders and making steel structure manufacturing according to approved welding procedure specifications ensure the quality of a welded fabrication.
– AWS D1.5 WPQ, WPS/WPQR Certification:
Determining the competence level of Steel Bridge Welders and using approved welding procedure specifications in steel bridge construction is one of the elements that ensure the strength of the bridge.
QUARCO Inspection and Certification Engineering Inc. provides 2nd party and 3rd party inspection and surveillance services in many different fields including industrial plants, power plants, large construction projects and steel constructions.
Welded fabrication, steel construction, assembly, facility evaluation, commissioning, subcontractor control and all other diversified works or projects, by providing all quality control services to the manufacturers with qualified engineers and technicians, on behalf of the customer, in accordance with the international standards, codes, technical specifications and customer requests, We follow the quality by inspecting completely independently and impartially from the manufacturer and the customer.
Within the scope of Third Party Surveillance Services, the following services are performed.
• Examination of the Quality Control Plan (ITP)
• Examining the materials and material certificates to be used in production,
• Control of consumables to be used in production,
• Checking Welding Procedures and Welder Certificates,
• Visual controls of welding connection points,
• Supervising the non-destructive testing (NDT) stages to be performed by the manufacturer when necessary,
• Examination of non-destructive testing (NDT) reports,
• Supervising the surface preparation and painting stages to be made by the manufacturer,
• Supervising the paint controls to be made by the manufacturer,
• Supervising the measurement controls to be made by the manufacturer,
• Supervising the manufacturing stages,
• Supervising the loading stages of the finished products,
• Reporting of control results.