Welding and NDT inspection performed by certified welding inspectors and ASNT-qualified personnel — reviewing WPS, PQR and welder qualifications before the first arc, witnessing production welding against the approved ITP, and independently overseeing radiographic, ultrasonic, penetrant and magnetic particle testing so weld defects are found in the shop, not in service.
Welding inspection is the independent verification that welding procedures, welder qualifications, joint preparation, in-process parameters and completed welds conform to the applicable code — AWS D1.1, ASME Section IX, API 1104 or the project specification. NDT inspection is the parallel verification that the non-destructive examination used to prove those welds is performed by qualified technicians, to a written procedure, with results interpreted and reported correctly.
Jags Assurance provides both as an independent third party. Our certified welding inspectors review and accept welding documentation before fabrication starts, monitor essential variables during production, and inspect completed joints visually against code acceptance criteria. Our NDT oversight covers the examination itself: verifying technician certification levels, reviewing written procedures against the referencing code, witnessing shoots and scans, and independently reviewing radiographs, UT data and reports before they are accepted into the quality record. Because we do not perform the NDT we oversee, there is no conflict between the party doing the testing and the party judging it.
Delivered against AWS D1.1/D1.5, ASME Section V and Section IX, API 1104 and ASNT SNT-TC-1A for personnel qualification, supplemented by the project specification and client acceptance criteria — the code sets the floor, the contract usually sets more.
Review and acceptance of Welding Procedure Specifications, supporting Procedure Qualification Records and welder/operator performance qualifications against ASME Section IX, AWS D1.1 or API 1104 before production welding begins.
Weld maps, joint registers and NDE extent built into the Inspection and Test Plan, with hold and witness points fixed against the applicable code and specification.
AWS-certified welding inspectors performing fit-up, in-process and final visual inspection against code acceptance criteria, with documented findings and repair tracking.
Procedure review, technique-sheet verification, witnessing of exposures, and independent film or digital radiograph interpretation against the acceptance standard.
Verification of calibration blocks, scan plans and technician certification for conventional UT and phased array, with witness of scanning and independent review of indications and data.
Surface-examination oversight — consumable batch and compatibility checks, dwell and development timing, technique and lighting verification, and evaluation of recorded indications.
Assessment of the NDT subcontractor's written practice, SNT-TC-1A compliance, technician certification files, equipment calibration records and reporting quality.
Weld repair procedure review, repair re-inspection, non-conformance reports through verified closure, and a complete weld and NDE record package for the data book.
Sequenced so documentation failures are caught before welding, and examination failures before acceptance.
Accept or reject WPS, PQR, welder qualifications and NDT written procedures against the referencing code and the project specification.
Agree weld maps, examination extent and acceptance criteria, and place hold and witness points into the approved ITP.
CWI visual inspection through fit-up, in-process and final stages; witness RT, UT, PT and MT and verify technician qualification on the day.
Independently review examination results, raise NCRs on rejectable indications, verify repair welding and re-examination, and compile the weld and NDE dossier.
Delivered across North America, with India and the UAE coming soon.
A CWI verifies that welding is performed to the applicable code. That means reviewing the WPS, PQR and welder qualifications before work starts, checking joint preparation and fit-up, monitoring essential variables such as preheat, interpass temperature and consumables during welding, and inspecting the completed weld visually against the code's acceptance criteria. The CWI also reviews NDE results and documents everything into the quality record.
Welding inspection is the broader activity — it covers documentation review, welder qualification, in-process monitoring and visual examination of the finished weld. NDT (non-destructive testing) is one set of examination methods used within that activity to look below the surface: radiography, ultrasonics, penetrant and magnetic particle testing. Visual inspection alone cannot find internal defects; NDT alone does not confirm the weld was produced by a qualified welder to a qualified procedure.
A Welding Procedure Specification (WPS) is the written instruction telling the welder how to make the weld — process, materials, joint design, position, preheat, electrical parameters. A Procedure Qualification Record (PQR) is the evidence that a test weld made to those variables was produced and mechanically tested with acceptable results. The PQR supports the WPS; a WPS without a valid supporting PQR should not be accepted for production welding.
Radiographic testing (RT), conventional ultrasonic testing (UT), phased array ultrasonic testing (PAUT), liquid penetrant testing (PT) and magnetic particle testing (MT), plus visual testing (VT). We provide independent oversight and review of these examinations — procedure and personnel verification, witnessing and result interpretation — rather than competing with your NDT contractor.
It depends on the material, thickness, joint geometry and the code being applied. Radiography is generally better at detecting volumetric defects such as porosity and slag and produces a permanent image, while ultrasonics is generally better at detecting planar defects such as lack of fusion and cracks, and is preferred on thicker sections and where radiation safety or access is a constraint. Many specifications call for both on critical joints. The referencing code and project specification decide it, not preference.
The examination extent is set by the referencing code, the service criticality and the contract — it can range from a spot percentage of production welds to 100% examination on high-consequence joints. We agree the extent and the sampling rule in the ITP before fabrication starts, and escalate the extent when the rejection rate indicates a systemic problem rather than a one-off defect.
Yes. We mobilise CWI and ASNT-qualified personnel to fabrication shops, module yards, pipe spool facilities and construction sites, on either a resident basis for the duration of fabrication or a campaign basis around specific hold points and shipments.
Yes. We assess the NDT contractor's written practice against ASNT SNT-TC-1A or the applicable scheme, review technician certification and eye-examination files, check equipment calibration and consumable control, verify written procedures against the referencing code, and sample-review issued reports for technical adequacy.
Independent inspectors and quality engineers across your vendors, fabrication shops and sites.
Owner-side PQMS — ITPs, third-party inspection, NCR/CAPA and certified data-book handover.
Inspection scope, required documentation and the weld rejects that recur most on structural fabrication.
How each NDT method works, what it can and cannot detect, and where acceptance criteria come from.
Where weld and NDE hold points sit inside the ITP, and how to set examination extent.
Send us the code, the weld scope and the location — we'll confirm the right certification level and mobilisation window within one business day.
