STSC Hazard Recognition and Risk Assessment 2

Question 1

In construction risk assessment, what does the term 'residual risk' mean?

Accepted Answer

The risk that remains after all feasible controls have been implemented

Answer

Residual risk is the level of risk that remains after all practical hazard controls have been applied. It helps determine whether additional measures or PPE are still needed.

Question 2

Which of the following is an example of an 'engineering control' used to reduce hazards on a construction site?

Accepted Answer

Installing guardrails around an elevated work platform

Answer

Engineering controls physically change the work environment or equipment to reduce hazard exposure — guardrails eliminate the fall hazard rather than just protecting a worker from its consequences.

Question 3

A safety supervisor notices workers are repeatedly bypassing a machine guard. What is the MOST effective long-term solution?

Accepted Answer

Investigate why workers bypass the guard and redesign it to be user-friendly without compromising protection

Answer

Repeatedly bypassed guards often indicate a design problem. Investigating the root cause and redesigning the guard addresses the underlying issue rather than enforcing compliance against a poorly designed system.

Question 4

Under OSHA 29 CFR 1926, which of the following activities requires a written permit before work can begin?

Accepted Answer

Entry into a permit-required confined space

Answer

29 CFR 1926.1203 requires a written entry permit for entry into permit-required confined spaces, which have serious hazards such as atmospheric dangers, engulfment risks, or configuration hazards.

Question 5

What is the significance of the 'Fatal Four' in OSHA's construction industry focus?

Accepted Answer

The four leading causes of worker deaths in construction: falls, struck-by, caught-in/between, and electrocution

Answer

OSHA's 'Fatal Four' refers to the four leading causes of construction fatalities: falls, struck-by objects, caught-in/between hazards, and electrocution — which together account for the majority of construction worker deaths.

(STSC) Safety Trained Supervisor Construction Practice Test

(STSC) Safety Trained Supervisor Construction Practice Test

STSC Hazard Recognition and Risk Assessment 2