Non-Destructive Testing

Weld inspection — visual to volumetric.

Certified visual and NDT weld inspection to AWS D1.1, ASME IX and API 1104 — from fit-up and root through to MT/PT surface and UT/RT volumetric examination.

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Live GCS · Oman

Service overview

Independent weld inspection in Oman.

Welds carry the load and the pressure. GCS provides CSWIP/CWI visual inspection plus the full NDT toolkit, witnessing fit-up and root, gauging weld profiles, and applying surface and volumetric methods to confirm welds meet the code.

Scope of work

What we cover.

The complete range of activities included in this service line.

Visual (CSWIP/CWI)

Certified visual weld inspection

Fit-up & Root

Joint preparation, alignment and root pass

MT / PT Surface

Magnetic particle and dye penetrant

UT / RT Volumetric

Ultrasonic and radiographic testing

Profile Gauging

Weld size, undercut and reinforcement

NCR & Reporting

Defect logs, NCRs and acceptance reports

Features & benefits

Why operators choose GCS.

Independent

Third-party reporting recognised by EPC and O&G majors in Oman.

Accredited

LEEA Full Member, ISO 17020 and ISO 17025 accredited delivery.

Fast mobilisation

Typically within 2 working days across Muscat, Sohar and Duqm.

Traceable records

Photographic reports and certificates issued within 5 working days.

Industry applications

Where this service is deployed.

Weld Inspection supports asset integrity and statutory compliance across Oman’s heavy industry.

Oil & GasPetrochemicalRefiningPower GenerationWater & DesalinationFertiliserEPC ContractorsStorage Terminals

Standards & compliance

Frameworks we work to.

Every report references the applicable code so your QA, client and insurer can audit decisions back to source.

AWS D1.1ASME IXAPI 1104ISO 5817ASME V

Service process

How the job runs.

A repeatable, auditable sequence from enquiry to certificate.

Stage 01

WPS review

Welding procedure and welder qualifications confirmed.

Stage 02

Fit-up check

Joint prep, alignment and pre-heat witnessed before welding.

Stage 03

In-process

Inter-pass and root inspection during welding.

Stage 04

Final NDT

Visual plus MT/PT and UT/RT as the code requires.

Stage 05

Report

Acceptance reported against the code; NCRs raised for defects.

Equipment & technology

Tools of the trade.

Calibrated, traceable instruments operated by qualified technicians — every tool carries a current calibration certificate.

UT flaw detectorsPAUT / TOFD arraysMPI AC/DC yokesUV-A lampsX-ray / gamma sourcesReference blocks

Frequently asked

Questions our clients ask most often.

Which weld inspection method should I use?+

Visual and surface NDT (MT/PT) confirm surface quality; volumetric NDT (UT/RT) confirms internal soundness. The governing code and joint criticality dictate the combination — we advise the right method mix for each weld.

Do you review welding procedures and welder qualifications?+

Yes. We review WPS/PQR and WPQ records to confirm the procedure is qualified and the welder is approved for the joint before and during inspection.

Are your weld inspectors certified?+

Our welding inspectors hold CSWIP 3.1 / AWS CWI certification, and NDT technicians are certified to ISO 9712 at the appropriate level.

How quickly can GCS mobilise weld inspection in Oman?+

For routine work in Muscat, Sohar or Duqm, mobilisation is typically within 2 working days. Emergency and post-incident jobs can be mobilised same-day, with reports issued within 5 working days.

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