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Crane Pre-operation Inspection
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What should you check for before operating a crane? - Rope appearance - lubrication, kinks, breaks, corrosion, reduced diameter, or other signs of wear or damage.
- A rope drum - position of cable in groove tracking, means of anchoring and drum wear or damage.
- Sheaves - alignment of ropes, guides, dead ends, wear in sheave groove.
- Hooks - cracks, twisting, straightening, hook throat opening or other signs of wear or damage.
- Lights - burned out, broken.
- Mechanical parts and guards - loose, bent, broken, and missing.
- Rails - broken, chipped, cracked.
- Wheels - worn (showed by bumpy riding).
- Bearings - loose, worn.
- Brakes - shoe wear.
- Bridge bumpers and a trolley end stop - loose, missing, improper placement.
- Controllers and collector shoes or bars - worn, pitted, loose, broken, or faulty operation.
- A foot walk - condition of the boards, railings, and ladders.
- Gears - lack of lubrication or foreign material in gear teeth (indicated by grinding or squealing).
- A fire extinguisher must be in the crane cab.
- Make sure that no one is on or around a crane before closing the main or emergency switch, even when starting on regular duty.
- Before closing the main switch, make sure that all controllers are in the "off" position.
- Inspect oil only after opening and locking out the main switch.
What should you inspect a moving crane for? Before lifting any load you should start the crane and inspect it when it is moving - Smooth play out of wire rope to and from a drum.
- Sheaves turning without binding or jerking as a rope passes over them.
- Proper alignment where ropes enter sheaves.
- Ropes not rubbing on rope sheave guards.
- Rubbing, scraping, or clattering noises during operation.
- Proper operation of controls and brakes.
- Test the limit switch. Slowly raise the hook block with no load attached to the hook. If the switch is defective, make sure the block does not strike the cable drum.
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Document last updated on April 13, 1999
Copyright ©1997-2008 Canadian Centre for Occupational Health & Safety
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