CHST FREE Construction Health and Safety Technician Questions and Answers 4

Question 1

Under OSHA 1926.403, what is the minimum clearance required between energized electrical conductors operating at 50 kV and unqualified workers?

Accepted Answer

10 feet

Answer

OSHA requires unqualified workers to maintain at least 10 feet of clearance from overhead lines up to 50 kV.

Question 2

Which hierarchy of controls level offers the highest level of worker protection?

Accepted Answer

Elimination

Answer

Elimination removes the hazard entirely, making it the most effective level in the hierarchy of controls.

Question 3

A scaffold plank must extend beyond its support at least how many inches but no more than 18 inches?

Accepted Answer

6 inches

Answer

OSHA 1926.451 requires scaffold planks to overhang supports by at least 6 inches and no more than 18 inches.

Question 4

What does the acronym 'IDLH' stand for in confined space and respiratory protection standards?

Accepted Answer

Immediate Danger to Life and Health

Answer

IDLH (Immediately Dangerous to Life or Health) defines exposure concentrations that pose an immediate threat.

Question 5

During a confined space entry, the attendant's PRIMARY duty is to:

Accepted Answer

Monitor entrants and maintain continuous communication

Answer

The attendant must maintain continuous communication with entrants and be ready to initiate rescue, not enter the space.

CHST - Construction Health and Safety Technician Practice Test