STSC Hazard Identification and Control 2

Question 1

The hierarchy of hazard controls lists controls in what order from most to least effective?

Accepted Answer

Elimination → Substitution → Engineering controls → Administrative controls → PPE

Answer

NIOSH's hierarchy of controls ranks from most effective (elimination) to least effective (PPE), guiding hazard control selection.

Question 2

A Job Hazard Analysis (JHA) or Job Safety Analysis (JSA) is most effective when:

Accepted Answer

Developed by the supervisor and workers who perform the task

Answer

JHAs are most effective when developed collaboratively with workers who actually perform the task, as they have firsthand knowledge of the hazards.

Question 3

An 'engineering control' for controlling a noise hazard would be:

Accepted Answer

Installing sound-dampening enclosures around loud machinery

Answer

Engineering controls physically modify the work environment to reduce hazard exposure — in this case, enclosing the noise source.

Question 4

When should a pre-task safety plan be reviewed on a construction site?

Accepted Answer

Every morning at the beginning of each shift (toolbox talk)

Answer

Pre-task safety briefings (toolbox talks) should occur at the start of each shift to address daily hazards specific to that day's work.

Question 5

The term 'near miss' in construction safety refers to:

Accepted Answer

A close call where no injury or damage occurred but could have

Answer

A near miss is an unplanned event that did not result in injury or damage but had the potential to do so under slightly different circumstances.

(STSC) Safety Trained Supervisor Construction Practice Test