EOT Crane Load Test Procedure UAE — Overhead Cranes

Load testing electric overhead travelling cranes in UAE factories and warehouses. The regulatory context behind Dubai crane testing is covered in our work equipment inspection regulations guide.

What the Test Covers and When It Is Required

An Electric Overhead Travelling crane is the workhorse of UAE factories, workshops and warehouses: it runs on elevated rails along the building, with a bridge spanning the bay, end carriages carrying the bridge along the runway, and a trolley travelling along the bridge carrying the hoist. Every component moves, and every component is loaded during a lift — so the load test addresses each element: the hoist is proven for its rated and proof load, the trolley is travelled under load, and the bridge is run along the runway with the load positioned to stress it while deflection is measured.

Three triggers bring a facility to testing. The first is commissioning: a newly installed EOT crane is load tested before it starts production duty, giving the baseline certificate factories keep on file. The second is periodic thorough examination, where the crane's regime includes proof load testing at defined intervals. The third is repair or modification — a new hoist, re-roping, re-geared machinery or structural repair ends the old test evidence.

In the UAE, factories and warehouse operations are routinely asked for current test certificates by clients, insurers, or authority and municipality-linked inspections, and a lapsed test can stop production on the spot. Keeping the load test current is an operational matter, not paperwork. Confirm the applicable interval and load with the inspection body.

The Test Sequence: No-Load, Load and Proof

Testing proceeds from light to heavy, in a fixed order. The no-load stage exercises the crane empty: hoisting and lowering, trolley travel, bridge travel, limit switches and controls, confirming everything behaves before weight is applied. The load stage then lifts the rated load and runs the crane through its working motions with that load, checking brakes and smooth travel under working conditions. Below-the-hook accessories follow the quarterly colour rotation — charted in our lifting colour code chart 2026.

Only then is the proof load applied — commonly 125% of SWL per international practice — held for its defined period and observed while deflection is measured. Skipping ahead to the proof load wastes the value of the earlier stages, because faults found empty are cheaper to fix than faults found under overload. The sequence is summarised below.

Brakes, Limit Switches and Deflection

Brakes are the safety element most tested under load. The hoist brake must hold the load when the crane is stopped; trolley and bridge brakes must hold the crane on its travels. During the test, the load is stopped deliberately at each motion to demonstrate holding — a brake that lets a load creep is a fail, and a slipping brake on an EOT crane in a factory bay is a serious finding.

Limit switches are proven with the load on the hook: the hoist upper limit trips before the hook assembly reaches a dangerous position, and travel limits function on the trolley and bridge. Deflection of the bridge under the proof load is measured and compared with the permissible deflection limit set by the applicable standard and the crane's design. Confirm the specific deflection limits for your crane's span and class with the inspection body.

Common Findings and What They Mean

Most EOT load test findings cluster in three places. Brake creep — a hoist load that drifts slowly downward with the brake applied — points to worn friction linings or misadjustment, and the crane stays out of service until it is corrected and re-tested. Limit switch maladjustment, where the upper limit trips late or not at all, is a straightforward correction that prevents a hook over-travel into the structure.

Deflection beyond the permissible limit is the finding that matters most structurally: it suggests the bridge is overloaded for its class, fatigued, or was designed to a different duty than the certificate claims. After any finding, the correction is documented and the relevant part of the test repeated, so the final report records a crane that passes, not one that passed before the fault. Per international practice, the inspection body decides what must be repeated after rectification.

Preparing the Factory for the Test

The area under the crane bay is controlled like any lift zone. Production is cleared from beneath the load path, the floor below is barricaded, and personnel are briefed that test loads will be suspended overhead. Test loads need planning: certified weights are the simplest for smaller cranes, while larger capacities may use water bags filled on site to the required mass, so nothing heavy needs to be hauled through the plant.

The crane's documents are assembled first — capacity plate, prior reports, maintenance records — so the inspector can verify the rated duty before any load is applied. Access to the crane gantry, working lighting and clean walkways all affect how smoothly the test runs, whether the facility sits in Dubai's industrial areas, Mussafah in Abu Dhabi, or a Sharjah free zone. Agree the schedule and the production downtime window with the inspection body in advance so plant planning is not surprised.

The Load Test Report

The report closes the process. A complete EOT load test report identifies the crane and its rated capacity, states the loads applied at each stage, records hold periods, brake and limit switch results, and deflection measurements, and closes with a pass or fail conclusion carrying the competent person's signature and the date.

Factories should file the report with the certificate and review both before the next thorough examination. The history of deflection and brake results across successive tests is what reveals whether a crane is ageing gracefully or drifting toward a problem. QIC (Quality International Certifications), a UAE inspection company since 1998 that performs load testing, issues EOT crane test reports and certificates for factories and warehouses.

Checklist

• Assemble crane documents, capacity plate and prior test reports.
• Verify the rated SWL before planning the proof load.
• Clear and barricade the area under the load path.
• Brief plant personnel that test loads will be suspended.
• Run no-load checks: hoist, trolley, bridge, limits, controls.
• Test with rated load: brakes and travel under working load.
• Apply the proof load, commonly 125% of SWL, and hold.
• Measure bridge deflection and compare with the permissible limit.
• Prove all limit switches with load on the hook.
• Inspect for permanent deformation after unloading.
• File the signed report and certificate together.

EOT-specific requirements sit inside the general test framework — the crane load test UAE overview covers mobile, tower and EOT crane classes together.

Related Guides

• Crane Load Test Procedure UAE — Proof & Performance
• Load Test Certification Uae Proof Load
• Lifting Equipment Inspection Checklist Template (Free)
• Third Party Inspection Uae