HSE : IQA : Crane

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The Safety Interview Question & Answer

Topic: Crane

1. What is a crane?
• A piece of mechanical equipment used to lift or lower the load.
2. What are types of cranes? Tell me some
• 
  Mobile crane.
• Overhead crane.
• Tower crane.
• Crawler crane.
3. What is an anti-two-block device?
   
• Safety advice installed in lifting equipment (crane, side boom, boom truck, etc.) to prevent the hook/load from touching the sheaves.
• (It prevents the accidental collision of the hook with the sheaves (boom).
4. What is the Boom Angle Indicator?
• The boom angle indicator is normally mounted on the backside of the boom to help the operator determine at what angle the boom is.
5. What is the load chart (crane)?
• Specifications (documents) provided by the manufacturer showing the capabilities of lifting equipment (crane) at specific angles, radii, and boom lengths.
• In fact, a load chart shows the actual strength of a crane or any other lifting equipment to lift a load at a certain angle, distance, and length.
6. What is an anemometer?
• Anemometer is a device used for measuring wind speed.
7. What is the radius of the crane?
• The area from the center pin of the crane to the center of load.
8. What is the area that needs to be barricaded for crane operation?
• Swinging radius.
9. What is SWL?
• Safe Working Load is the maximum working load specified by the manufacturer.
10. Does radius affect the capacity of the crane?
• Yes, as soon as the radius increases, the capacity of the crane decreases.
11. What is the safe angle for the crane?
• 60 degrees.
12. What is the minimum acceptable angle for the crane?
• 45 degrees.
13. What is the minimum acceptable angle for a sling?
• 30 degrees.
14. Who will inspect the crane on a daily basis?
• Operator.
15. What should be the minimum distance the crane needs to maintain from the power line?
• The crane shall maintain a safe distance from the power line during lifting operation.
• Minimum clearance shall be
• Up to 50 kV (10 feet).
• Over 50 kV and 200 kV (15 feet).
• Over 200 to 350 kV (20 feet).
• Over 350 to 500 kV (25 feet).
• (See 1926.1408 (h) for more information)
16. What is an overhead goal post or height restriction Goal post used for?
• Overhead cable goal posts or height restriction goal posts are used to warn vehicles of the danger of overhead cables, power lines, low structures on highways, roads, sites, etc.
• (It shows the maximum overhead clearance distances).
17. You mentioned that the lifting operation shall be stopped at 32 km/hr. But what is the possibility if crane operation is in progress at more than 32 km/h?
• If the manufacturer allows it, crane operation can be done at the specific wind speed as specified by the manufacturer.
18. Give a brief note about the crane and LE?
• Only authorized and competent persons should operate cranes
• The correct sling must be used for the load to be lifted
• Lifting equipment must be certified from a competent authority and marked with its SWL
• Never be used for loads exceeding its SWL
• Cables and slings must be padded when passing over sharp edges of equipment
• Check the condition of the ground before parking the crane and use outriggers
• All moving parts must be guarded
• Uncertified chains, ropes, slings, and hooks should not be used
• All slings are to be inspected by third-party inspectors
• Never stand or work under a suspended load
• Place the outriggers on firm ground
• Guide ropes shall be used to control the swing of lifted material
• Never operate the crane at the time of speed wing
• Lifting over live equipment should not be encouraged
• The crane should undergo periodical maintenance as per the manufacturer
19.