CHST CHST - Construction Health and Safety Technician Crane and Rigging Safety Questions and Answers 3

Question 1

What is the minimum safe distance a crane must maintain from energized power lines rated at 50 kV or below?

Accepted Answer

10 feet

Answer

OSHA 29 CFR 1926.1408 requires a minimum 10-foot clearance from energized power lines up to 50 kV.

Question 2

When a crane operator cannot see the load at all times, what must be done?

Accepted Answer

Use a signal person

Answer

OSHA requires a qualified signal person whenever the operator does not have a clear view of the load or path of travel.

Question 3

A wire rope used for rigging shows more than __ broken wires in one lay length and must be removed from service.

Accepted Answer

6

Answer

Six or more broken wires in one rope lay, or three or more in one strand, is a criterion for removal from service per ASME B30.9.

Question 4

What document must be available in the cab or on the crane at all times during operations?

Accepted Answer

Manufacturer's load chart

Answer

OSHA 29 CFR 1926.1417 requires the load chart to be in the cab and legible so operators can verify capacity before any lift.

Question 5

Which factor does NOT affect a crane's rated load capacity?

Accepted Answer

Operator's years of experience

Answer

Rated capacity is a mechanical/structural calculation based on boom angle, length, and configuration — operator experience is not a variable in the load chart.

CHST - Construction Health and Safety Technician Practice Test

CHST - Construction Health and Safety Technician Practice Test

CHST CHST - Construction Health and Safety Technician Crane and Rigging Safety Questions and Answers 3