Lift Planning and Critical Lift Procedures Flashcards

When planning a lift near electrical power lines, what is the minimum default clearance distance required by OSHA for lines up to 350 kV?

Answer: 15 feet

OSHA requires a minimum 15-foot clearance from power lines up to 350 kV when no table value is available.

During lift planning, the 'rated capacity' of a crane refers to:

Answer: The load limit established by the manufacturer for specific configurations

Rated capacity is the manufacturer-established maximum load for a specific boom length, angle, and radius configuration.

A 'tandem lift' requires special planning because:

Answer: Two or more cranes share the load, making load distribution critical

Tandem lifts involve multiple cranes sharing a load, so precise coordination and load distribution calculations are essential to prevent overloading either crane.

What document must be developed and approved before performing a critical lift?

Answer: A written lift plan reviewed by a qualified person

Critical lifts require a written lift plan that must be reviewed and approved by a qualified person before the lift begins.

Which condition would most likely classify a routine lift as a 'critical lift'?

Answer: The lift exceeds 75% of the crane's rated capacity

A lift is typically classified as critical when it exceeds 75% of the crane's rated capacity, requiring enhanced planning and oversight.

When calculating the load radius for lift planning, the radius is measured from:

Answer: The center of rotation of the crane to the center of the load

Load radius is measured horizontally from the crane's center of rotation to the center of the suspended load.

Before beginning a critical lift over an occupied structure, the lift planner must:

Answer: Evaluate exclusion zones and ensure personnel are evacuated from the area below the load path

For lifts over occupied structures, establishing exclusion zones and clearing personnel from beneath the load path is mandatory for safety.