GCC Construction Safety and Risk Management 3

Question 1

Which of the following is an example of an engineering control for reducing silica dust exposure on a construction site?

Accepted Answer

Using wet methods or local exhaust ventilation on grinding equipment

Answer

Engineering controls like wet methods and LEV eliminate or reduce the hazard at the source, which is preferred over PPE.

Question 2

Under OSHA's silica standard for construction (29 CFR 1926.1153), what is the Permissible Exposure Limit (PEL) for respirable crystalline silica?

Accepted Answer

50 micrograms per cubic meter as an 8-hour TWA

Answer

OSHA's silica PEL for construction is 50 μg/m³ as an 8-hour time-weighted average.

Question 3

A worker falls into a trench and is buried to the waist. What is the FIRST action responders on the surface should take?

Accepted Answer

Call emergency services and stop all nearby heavy equipment vibration

Answer

Calling 911 and stopping vibration from equipment prevents further cave-in and is the safest immediate action.

Question 4

What does the hierarchy of controls prioritize FIRST when addressing a workplace hazard?

Accepted Answer

Elimination of the hazard

Answer

The hierarchy of controls places elimination at the top because physically removing the hazard provides the greatest protection.

Question 5

A scaffold collapses injuring three workers. Under OSHA's severe injury reporting rule, the contractor must report the hospitalization within:

Accepted Answer

24 hours of learning of the hospitalization

Answer

OSHA requires employers to report any in-patient hospitalization within 24 hours of learning of the event.

(GCC) General Contracting Certification Practice Test