NCCCO Emergency Procedures & Accident Prevention 5

Question 1

A worker on the ground is directing a blind lift via radio. The signal is lost mid-lift. What should the operator do?

Accepted Answer

Stop all crane movement and hold position until communication is restored

Answer

Loss of communication during a blind lift requires the operator to stop all movement and hold position until communication is re-established with the signal person.

Question 2

When conducting a post-accident investigation involving a crane, which action should be taken FIRST?

Accepted Answer

Secure the accident scene and preserve evidence for investigation

Answer

Securing the accident scene and preserving evidence is the first priority to ensure an accurate investigation and comply with regulatory requirements.

Question 3

What is the minimum distance a crane must maintain from an energized power line rated at 50–200 kV, when no electrical utility owner authorization is in place?

Accepted Answer

20 feet

Answer

OSHA 1926.1408 requires a minimum 20-foot clearance from power lines rated 50–200 kV unless the utility owner has authorized a reduced clearance.

Question 4

An operator observes that the crane's load moment indicator (LMI) is reading differently than the load chart for the current configuration. The operator should:

Accepted Answer

Stop the lift and have the LMI inspected before continuing

Answer

A discrepancy between the LMI and load chart indicates a potential malfunction; the operator must stop and have the device inspected by a qualified person.

Question 5

During a lift, a rigger signals an emergency stop. After stopping, the operator notices smoke coming from the hoist motor. What is the correct next step?

Accepted Answer

Shut down the crane and use an alternative means to safely lower the load

Answer

The crane should be shut down and an alternative lowering method employed so the compromised hoist motor is not used with a suspended load.

NCCCO (National Commission for the Certification of Crane Operators) Practice Test

NCCCO (National Commission for the Certification of Crane Operators) Practice Test

NCCCO Emergency Procedures & Accident Prevention 5