NCCER Crane Site Operations & Hazard Recognition 2

Question 1

A crane is working near an energized 69 kV power line. What is the minimum required clearance distance?

Accepted Answer

15 feet

Answer

OSHA requires a minimum 15-foot clearance from power lines rated between 50 kV and 200 kV.

Question 2

When performing a pre-lift site survey, which of the following ground conditions is most critical to evaluate?

Accepted Answer

Soil bearing capacity

Answer

Soil bearing capacity determines whether the ground can support the crane and load without settling or tipping.

Question 3

What does the term 'exclusion zone' mean in crane operations?

Accepted Answer

Restricted area around the crane and load path where unauthorized personnel are not allowed

Answer

An exclusion zone is a barricaded area beneath and around the crane's load path to protect workers from falling loads.

Question 4

During crane assembly, a worker notices the boom hoist limit switch is not functioning. What is the correct action?

Accepted Answer

Tag the crane out of service and notify the supervisor

Answer

A non-functioning boom hoist limit switch is a critical safety defect that requires removing the crane from service.

Question 5

Which condition most increases the risk of crane overturning during travel on a job site?

Accepted Answer

Traveling with the boom at maximum elevation

Answer

A high boom elevation raises the center of gravity dramatically, making the crane unstable when traveling.

(NCCER Crane) National Center for Construction Education and Research Crane Certification Practice Test