Find flaws before they find you.
Certified NDT technicians delivering ultrasonic, magnetic particle, dye penetrant, radiographic and eddy current testing on welds, lifting gear and pressure equipment — with documented evidence your QA, EPC and insurer all accept.
Explore each discipline in depth.
Click through to the dedicated page for each equipment / discipline — complete with its own animated illustration, scope & standards.
Ultrasonic Testing
Ultrasonic testing uses high-frequency sound waves to detect internal flaws and measure wa...
View pageMagnetic Particle
MPI reveals surface and near-surface flaws in ferromagnetic materials by exposing magnetic...
View pageDye Penetrant
Dye penetrant testing detects surface-breaking defects on any non-porous material — ...
View pageRadiographic
Radiographic testing uses X-rays or gamma rays to image internal defects in welds, casting...
View pagePhased Array
Phased array UT (PAUT) and time-of-flight diffraction (TOFD) deliver superior defect chara...
View pageEddy Current
Eddy current testing uses electromagnetic induction to detect surface and near-surface fla...
View pageFrom scan to defect map — every result evidenced.
Every method follows the same five-stage discipline so your QA records hold up under any audit.
Procedure & calibration
Method-specific written procedure approved by Level III. Reference blocks calibrated against traceable standards.
Surface preparation
Surface cleaned to method-specific roughness; temperature, accessibility and access permits validated.
Scanning & data capture
Trained Level II / III techs scan the test object — every signal, indication and reading captured digitally.
Evaluation & sizing
Findings classified against ASME, API or AWS acceptance criteria. Defects sized, located and characterised.
Report & recommendations
Full NDT report with images, A/B/C-scans, sentencing and engineering recommendations — within 5 working days.
Built for accuracy, independence & accountability.
Precision
Every measurement traceable to international standards.
Independence
Independent third-party reporting recognised by EPC majors.
Safety First
HSE-compliant operations on every job we touch.
Partnership
Single point of contact, fast response, accountable delivery.
Questions our clients ask most often.
What NDT methods does GCS offer in Oman?
GCS performs ultrasonic testing (UT, PAUT, TOFD), magnetic particle inspection (MPI), dye penetrant testing (DPT), radiographic testing (RT with X-ray and Ir-192/Se-75 gamma sources), eddy current testing (ECT), hardness testing and PMI.
Are your NDT technicians certified?
Yes. All NDT technicians are certified to ASNT SNT-TC-1A Level II or Level III in their respective methods. Certification records are available for client audit.
Can NDT be performed without taking equipment out of service?
Most surface methods (MPI, DPT, visual) and ultrasonic thickness gauging can be performed in-service. Radiographic testing usually requires controlled-access exclusion zones but the equipment doesn't always need shutdown. We plan around your operating constraints.
Which NDT method is best for weld inspection?
It depends on the weld and acceptance criteria. Surface defects: MPI (ferromagnetic) or DPT (non-ferrous). Volumetric defects: UT for in-service welds, PAUT for complex geometries with sizing accuracy, TOFD for crack height, RT for documentary record. We help you choose.
Do you provide NDT for offshore and marine applications?
Yes. Our crews are mobilised across Sohar Industrial Port, Duqm SEZ and Salalah Port for marine NDT including underwater inspection coordination, lifting accessory testing and vessel/platform structural NDT.
Specialised NDT services.
Click through to the dedicated page for each sub-service.
More in this category.
Additional services in this group.
Critical Weld Assessment
Critical weld assessment in Oman: engineering-critical assessment of high-consequence welds with PAUT/TOFD…
View pageFluorescent Penetrant Inspection
Fluorescent penetrant inspection (FPI) in Oman: high-sensitivity fluorescent dye penetrant for fine…
View pageLong-Range UT (Guided Wave) in
Guided-wave ultrasonic testing in Oman screens 30+ metres of pipework from one transducer ring. Detect…
View pageStructural Integrity Inspection
Structural integrity inspection in Oman: steel structures, pipe racks and platforms surveyed for corrosion,…
View pageTank Floor MFL Robotic Inspection in
Robotic MFL tank-floor inspection in Oman: Floormap, Silverwing and MFE robotic crawlers, mapping pitting and…
View pageWeld Inspection
Weld inspection in Oman: visual and NDT weld inspection by CSWIP/CWI inspectors to AWS D1.1, ASME IX and API…
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