CHST General 4

Question 1

What is the maximum permissible noise exposure for a construction worker at 95 dBA without hearing protection under OSHA standards?

Accepted Answer

4 hours

Answer

OSHA 1926.52 allows a maximum of 4 hours of exposure at 95 dBA without engineering controls or hearing protection in construction.

Question 2

During a toolbox talk, a foreman asks which class of hard hat protects against high-voltage electrical hazards up to 20,000 volts. The correct answer is:

Accepted Answer

Class B

Answer

Class B (Type II) hard hats are tested to protect against high-voltage electrical hazards up to 20,000 volts.

Question 3

A CHST is implementing a hierarchy of controls for a struck-by hazard from overhead crane operations. Which control should be implemented FIRST?

Accepted Answer

Eliminate overhead lifting by using ground-level assembly

Answer

Elimination is the highest and most effective level of the hierarchy of controls, removing the hazard entirely rather than mitigating exposure to it.

Question 4

Which document establishes minimum safety and health program requirements that are widely referenced by safety professionals and used as a framework for construction SMS?

Accepted Answer

ANSI/ASSP Z10

Answer

ANSI/ASSP Z10 is the American national standard for Occupational Health and Safety Management Systems, widely used as a construction SMS framework.

Question 5

Under 29 CFR 1926.502, what is the maximum force a personal fall arrest system must be able to withstand during a fall arrest event?

Accepted Answer

5,000 pounds

Answer

OSHA requires anchorage points for personal fall arrest systems to support at least 5,000 pounds per attached worker.

CHST - Construction Health and Safety Technician Practice Test

CHST - Construction Health and Safety Technician Practice Test

CHST General 4