Does a Crane Scale Need Examination After Repair?

Learn when a repaired crane scale needs a LOLER thorough examination, what must be assessed and how to document its safe return to service correctly.

A crane scale after repair thorough examination is required when the damage, failure, modification or repair is an exceptional circumstance liable to jeopardise its safety. HSE includes major changes and the replacement or repair of critical parts among such circumstances. Routine maintenance does not automatically create the same trigger, so there is no universal rule that every minor repair starts a new examination interval. Quarantine the scale first, establish what changed and obtain competent-person direction before release where safety could have been affected.

Separate routine maintenance from a critical repair

The decision turns on safety significance, not cost or duration. Cleaning to the manufacturer’s instructions, an approved battery change or scheduled service may be routine maintenance if it does not disturb the load path, conceal damage or alter a safety function. It still needs prescribed checks and a controlled return to use.

Treat work as potentially critical when it follows damage or failure, changes the design, or affects a hook, shackle, suspension eye, load pin, load cell, structural member or load-bearing joint. Welding, straightening, component substitution, changed attachment geometry or altered rated capacity also demand specialist review. A small repair can be critical because of its location in the load path.

LOLER Regulation 9 requires examination after exceptional circumstances liable to jeopardise lifting-equipment safety. HSE’s thorough-examination guidance expressly identifies damage, failure and major changes likely to affect integrity, including critical-part replacement or repair. If classification is uncertain, do not let an operator decide by trial use; refer the repair history to a suitable competent person.

Quarantine before deciding the scope

Remove the scale from service when damage, abnormal behaviour or a safety-relevant defect is found. Identify it by asset and serial number, attach a clear “do not use” status, block it in the issue system and segregate it. Record the event, symptoms, load and circumstances where known, and preserve damaged parts.

Quarantine should continue through repair, examination and any required testing. A repairer’s completion note is valuable evidence, but it is not automatically a LOLER thorough-examination report or permission to resume lifting.

Let the competent person define the examination

A thorough examination is a systematic, detailed assessment of safety-critical parts followed by a written report. The competent person needs enough practical and theoretical knowledge and experience to detect defects and judge their importance. HSE also expects independence and impartiality; the assessor should not simply approve their own routine maintenance.

Provide the examiner with original instructions, declarations and markings; previous reports; the incident record; repair method and parts; repairer qualifications; and any manufacturer approval. The crane-scale and hoist thorough-examination guide explains why the scale, hoist and accessories need defined examination scopes rather than one vague status.

Depending on the repair, the competent person may require visual and functional checks, wear measurements, internal examination, non-destructive testing or load testing. They should verify that identification and safe-working-load markings remain correct, attachments are compatible, safety features work and no new defect exists. The scope must cover the repaired area and connected parts potentially affected by the event or repair.

Testing is risk-based, not automatic

HSE says most lifting equipment does not need testing at every thorough examination, and an unsuitable overload test can cause damage. The competent person should decide what is necessary from the repair details, manufacturer information and risk. Never improvise a proof load or infer one from the capacity marking.

After repair, the manufacturer and your LOLER competent person jointly define what functional checks, calibration or testing the unit needs; get that scope and its acceptance criteria in writing before the scale re-enters the lifting chain.

Any suspended-load test remains a lifting operation. Under the HSE LOLER overview, it must be competently planned, appropriately supervised and carried out safely. Control the area, keep everyone out from beneath the load and stay within the lowest-rated component’s limit.

Calibration and safety examination answer different questions

Calibration compares indications with suitable reference standards and reports measurement results, including error and uncertainty where applicable. It may be needed after work affecting the load cell, indicator, electronics, alignment or adjustment. Display division is not the same as verified accuracy, and a stable display does not prove a sound load path.

A thorough examination asks whether the equipment can continue to be used safely. Calibration cannot identify every crack, deformation, incorrect part or weakened connection; a satisfactory safety examination does not quantify weighing error. Complete both when the repair affects safety and measurement.

Use the P6 product page to identify the model and stated specification, then obtain the applicable repair instructions and calibration scope. The P6 is for check weighing, not legal-for-trade pricing or weight-based trade transactions. Calibration after repair does not create legal-for-trade approval.

Record the decision and control release

The equipment file should show the quarantine date, defect or event, repair authorisation, work completed, parts fitted and repairer. Add the competent person’s scope, examination date, findings, test results, defects requiring action and next due date. Keep calibration evidence separately but cross-reference it.

The LOLER report requirements guide covers the information expected in a report. A named authorised person should verify that required defects are closed, documents are present, status labels and registers are updated, and any operating restrictions are communicated before removing quarantine.

Do not assume either that a minor service resets the periodic clock or that a post-critical-repair examination leaves it unchanged. The competent person’s report or examination scheme should state the next due date. Release is an evidenced decision, not merely the moment the repaired scale powers on.

Frequently asked questions

Does replacing a battery require a new thorough examination?

Not automatically. If it is routine work using the correct part and procedure, with no safety-critical disturbance or exceptional event, proportionate maintenance and functional checks may be enough. Escalate any damage, unauthorised modification or uncertainty.

Does a calibration certificate release the scale for lifting?

No. It supports measurement performance within its stated scope. It does not replace the safety examination, defect closure or authorised release required after a critical repair.

Must every post-repair examination restart the interval?

There is no universal restart rule for every repair. Follow the next due date stated by the competent person in the report or the applicable examination scheme.