Specialised cover for oil & gas.
Facility, rig and wellsite lifting inspection, rapid field mobilization and shutdown/turnaround support — specialised oil & gas inspection to API, OPAL and LOLER standards.
Inspection built for Oman’s energy sector.
Oil & gas operations demand inspection that understands rigs, wellsites and turnarounds. GCS provides whole-facility inspection, API 4G/RP 8B rig lifting inspection, wellsite certification, rapid field mobilization and shutdown surge support — all OPAL-aligned.
Explore each discipline in depth.
Click through to the dedicated page for each service — complete with its own scope, standards and FAQs.
Oil & Gas Facility Inspection Services
Multi-discipline inspection of plant, lifting, pressure and structural assets at production…
View pageRig Lifting Equipment Inspection
Drilling-rig cranes, hoisting and lifting equipment inspected to API 4G, API RP 8B, LOLER and…
View pageWellsite Lifting Gear Certification
Field examination and certification of slings, shackles, hoists and lifting equipment at…
View pageField Mobilization Inspection Services
Rapid deployment of inspection and NDT teams to remote sites, rigs and wellsites with portable…
View pageShutdown & Turnaround Inspection Support
Surge inspection and NDT manpower for plant turnarounds and shutdowns — planning,…
View pageFrameworks we work to.
From enquiry to certificate.
Every job follows the same disciplined sequence so your team and your insurer always speak the same language.
Document review
OEM data, prior reports and service history reviewed before mobilising.
On-site examination
Visual, functional and dimensional checks against the checklist, fully photographed.
NDT / testing
Surface or volumetric NDT and functional or load testing as the code requires.
Findings & sentencing
Defects classified A/B/C, photographed and sentenced against the governing standard.
Certificate & tag
Certificate of Conformity and colour-coded tag issued 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.
Are your services OPAL-aligned?
Yes. Our inspection, inspectors and documentation align to OPAL requirements, so work at Oman’s oil & gas facilities, rigs and wellsites meets operator and contractor audit expectations.
Is GCS a LEEA member?
Yes. GCS is a Full Member of the Lifting Equipment Engineers Association (LEEA) and operates an ISO 17020 inspection scheme — the de-facto standard for credible lifting inspection in Oman.
Can you mobilise to remote field locations?
Yes. We deploy inspection and NDT crews with portable equipment to rigs, wellsites and remote interior and Duqm-region locations, with same/next-day response for urgent work.
How quickly can GCS mobilise oil & gas inspection in Oman?
For routine work in Muscat, Sohar or Duqm, mobilisation is typically within 2 working days. Emergency and field jobs can be mobilised same-day, with reports issued within 5 working days.