Crane Operations & Safety Procedures Flashcards

Before beginning crane operations, what is the operator's first responsibility?

Answer: Conduct a pre-operation inspection of the crane

A thorough pre-operation inspection ensures all crane systems are functioning properly and identifies potential hazards before any lifts are attempted.

What must an operator verify before making any lift?

Answer: That the load weight is within the crane's rated capacity for the configuration and radius

The operator must verify that the load weight, including rigging, does not exceed the crane's rated capacity at the specific radius and configuration being used.

When should a crane operator refuse to make a lift?

Answer: When conditions are unsafe, load exceeds capacity, or proper planning hasn't been completed

Operators have the authority and responsibility to refuse any lift they believe is unsafe, regardless of pressure from supervisors or others on site.

What is the purpose of maintaining a minimum two-wrap on the drum?

Answer: To ensure the rope end is secured to the drum and prevent the load from free-falling

Maintaining at least two wraps on the drum ensures the rope's dead-end attachment isn't the only thing holding the load. Without adequate wraps, the rope could slip off the drum.

What does the term 'swing radius' refer to in crane operations?

Answer: The area swept by the crane's counterweight or other parts as it rotates

The swing radius is the area covered by any part of the crane (including counterweight) as it rotates. Personnel and obstacles must be kept clear of this zone.

What is 'two-blocking' and why is it dangerous?

Answer: When the hook block contacts the boom tip, potentially causing structural failure or rope breakage

Two-blocking occurs when the hook block or overhaul ball is pulled up to the boom tip sheaves. This can break the wire rope, allowing the load to free-fall, or damage the boom.