OHST Practice Exam

The correct choice is probabilistic risk assessment, which focuses on evaluating and prioritizing hazards by analyzing their potential impact and the likelihood of their occurrence. This method involves the use of mathematical and statistical models to determine the probability of different outcomes. By incorporating both the frequency of hazardous events and their possible consequences, probabilistic risk assessment helps safety professionals better understand risks and make informed decisions regarding safety measures.

In this approach, experts can quantify uncertainties and assess various scenarios, leading to a more comprehensive understanding of risks. This is particularly valuable in environments where multiple hazards may compete for attention, allowing for a prioritized response based on the severity and likelihood of potential incidents.

Qualitative risk assessment, while valuable in its own right, often relies on subjective judgment and does not involve detailed numerical analysis. Quantitative risk assessment similarly provides numerical data but may not always include comprehensive probability calculations for all potential hazards. Comparative risk assessment is useful for comparing different risks but is not intrinsically focused on the in-depth analysis of impact and likelihood as seen in probabilistic risk assessment.