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Crane and Hoist Safety
Safety Instruction Number:50
Last Update:Tue, 09/11/2007
- Direct supervision of an experienced and licensed operator is required for any trainee learning to use lifting equipment.
- Riding a load or hook is prohibited.
- A limit switch is not to be used as an operating control.
- If the power goes off while an electric crane or hoist is being operated, turn off all switches or operating buttons.
- Don't use a crane or hoist in an unsafe working condition until it is repaired.
- Makeshift repair of lifting equipment is prohibited.
- If a crane, hoist, or mobile lifting device has been red-tagged as dangerous, OSU employees will not operate it..
- Before hoisting work begins, consideration must be given to the fact that stress is greatly increased if the leg of a hoisting chain, cable, or rope is rigged at an angle of less than 90 degrees with the horizontal. Avoid angles of less than 45 degrees.
- Side pull is prohibited; the load must be directly in line with the mast or boom.
- Keep cranes, power shovels, telescoping lifting devices, and similar equipment at least 6 feet away from high voltage lines. Use approved insulated buckets to lift personnel.
- Lift only one separately rigged load at a time.
- Keep lifting equipment from dangling or dragging under the load.
- The crane or hoist operator is responsible for the load. Only one employee will give signals to the operator. The operator needs a clear view of work and equipment at all times.
- Attach the load to the crane or hoist by slings or other approved devices.
- Remove from service all deformed or defective hooks, rings, or other lifting equipment.
- Don't use wire or manila rope which is frayed to the extent that it is weakened, or wire rope cables that are cut, frayed, kinked, or rusted .
- Nylon or wire rope slings must not be shortened by using knots..
- Use only manufacturer-recommended means to secure chain links of a hoist; don't use a nut and bolt, nails, pins, etc.
- Prevent sudden shock to slings used to lift equipment (e.g., twisting, snapping, or jerking into place).
- Don't carry compressed gas cylinders on a sling.
- Don't wrap the working line of the hoist around the load.
- Inspect a load for loose parts or objects before lifting.
- Secure the safety latch on the hook of a hoist when lifting or moving a load.
- Secure and properly balance the load before lifting a few inches off the floor or support.
- Test the brake each time a load is lifted, by raising the load a few inches and applying the brake.
- Make sure equipment lifting a load isn't kinked or caught against obstructions while moving the load upward.
- The area around the crane and the area directly under the travel path of the load is to be cordoned off sufficiently to prevent traffic and protect bystanders.
- All OSU cranes will be inspected on a yearly basis.