Free OHST Exam Questions That Helps Candidates Pass

Comprehensive and Detailed Explanation:

180 ÷ 6 = 30 units per hour

Therefore, the correct answer is B.

Production rate calculations help OHST professionals evaluate operational efficiency and potential risk exposure due to machine usage intensity. Higher rates may increase fatigue and mechanical failure risks, requiring stronger safety controls.

Comprehensive and Detailed Explanation:

The correct answer is C.

Engineering controls are least dependent on human behavior because they physically change the workplace environment to reduce or eliminate hazards.

Examples include machine guards, ventilation systems, and isolation barriers. These controls are more reliable than PPE or administrative measures.

OHST professionals prefer engineering controls for long-term risk reduction.

Comprehensive and Detailed Explanation:

42 ÷ 7 = 6 tasks per hour

So, the correct answer is B.

OHST professionals use task rate calculations to evaluate workload and identify fatigue risks.

Comprehensive and Detailed Explanation:

The correct answer is B.

Elimination is the most effective hazard control method because it completely removes the hazard from the workplace. If the hazard no longer exists, workers cannot be exposed to it.

Examples include discontinuing a dangerous chemical process or redesigning a task so a hazardous step is no longer required.

OHST professionals prioritize elimination during risk assessments because it provides permanent risk reduction without reliance on human behavior or protective equipment.

Comprehensive and Detailed Explanation:

The correct answer is D.

Elimination is the most effective control because it completely removes the hazard from the workplace. If the hazard no longer exists, workers cannot be exposed to it.

OHST professionals prioritize elimination during risk assessments because it provides permanent and reliable risk reduction without reliance on human behavior or protective equipment.