Third-Party Inspection

Shackle & hook inspection — gauged & MPI-tested.

Bow and dee shackles, eye and clevis hooks and connecting hardware gauged, MPI-tested and certified to LOLER, EN 13889 and ASME B30.10/B30.26.

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Live GCS · Oman

Service overview

Independent shackle & hook inspection in Oman.

Connecting hardware is small, cheap and load-critical. GCS gauges throat openings and pin diameters, applies magnetic particle inspection to detect surface cracks, and verifies WLL marking before tagging and certification.

Scope of work

What we cover.

The complete range of activities included in this service line.

Bow & Dee Shackles

Screw-pin and bolt-type shackles

Eye & Clevis Hooks

Self-colour and alloy lifting hooks

Swivel Hooks

Swivels, links and connecting hardware

Throat-Opening Gauge

Hook opening and twist measurement

MPI on Critical

Magnetic particle crack detection

WLL & Marking

Stamp legibility and WLL verification

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.

Shackle & Hook Inspection supports asset integrity and statutory compliance across Oman’s heavy industry.

Oil & GasConstructionPorts & MarinePower & UtilitiesManufacturingLogistics & WarehousingMining & QuarryingEPC Contractors

Standards & compliance

Frameworks we work to.

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

LOLER 1998LEEA COPSULEEN 13889ASME B30.10ASME B30.26

Service process

How the job runs.

A repeatable, auditable sequence from enquiry to certificate.

Stage 01

Document review

OEM data, prior reports and service history reviewed before mobilising.

Stage 02

On-site examination

Visual, functional and dimensional checks against the checklist, fully photographed.

Stage 03

NDT / testing

Surface or volumetric NDT and functional or load testing as the code requires.

Stage 04

Findings & sentencing

Defects classified A/B/C, photographed and sentenced against the governing standard.

Stage 05

Certificate & tag

Certificate of Conformity and colour-coded tag issued within 5 working days.

Equipment & technology

Tools of the trade.

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

Throat-opening gaugesVernier callipersMPI AC/DC yokesUV-A lampsCalibrated load cellsStamp kits

Frequently asked

Questions our clients ask most often.

When should a lifting hook be rejected?+

A hook is rejected if the throat opening has increased beyond ~5% (or OEM limit), it shows twist beyond 10°, wear beyond 8% of section, a missing or defective latch, or any crack found by MPI. We measure and sentence each hook individually.

Is GCS a LEEA member?+

Yes. GCS is a Full Member of the Lifting Equipment Engineers Association (LEEA), the global body governing lifting equipment competence — the de-facto standard for credible lifting inspections in Oman.

Why is MPI used on shackles and hooks?+

Magnetic particle inspection reveals surface and near-surface cracks at high-stress areas (hook saddle, shackle crown and pin) that a visual check alone would miss. It is quick, sensitive and ideal for ferromagnetic lifting hardware.

How quickly can GCS mobilise a shackle and hook 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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