ASP Risk Assessment and Control 4

Question 1

A facility uses the 'Bow-Tie' analysis method. What does the 'knot' or center of the bow-tie represent?

Accepted Answer

The top event or hazardous event

Answer

In Bow-Tie analysis, the central knot represents the top event — the moment control of the hazard is lost.

Question 2

When applying the hierarchy of controls, substitution is preferred over engineering controls because:

Accepted Answer

It eliminates or reduces the hazard at the source rather than containing it

Answer

Substitution replaces a hazardous material or process with a less hazardous one, reducing inherent risk rather than just controlling exposure.

Question 3

A safety manager calculates a Risk Priority Number (RPN) of 120 for a hazard. Which FMEA inputs produce this value if severity = 8 and detectability = 5?

Accepted Answer

Occurrence = 3

Answer

RPN = Severity × Occurrence × Detectability; 8 × 3 × 5 = 120.

Question 4

In quantitative risk assessment, 'risk tolerance' criteria are typically expressed as:

Accepted Answer

A maximum acceptable individual or societal risk level (e.g., 1×10⁻⁵/year)

Answer

Quantitative risk tolerance is usually expressed as an annual probability of harm threshold for individuals or populations.

Question 5

Which of the following BEST describes a 'leading indicator' in safety risk management?

Accepted Answer

Percentage of safety observations completed on schedule

Answer

Leading indicators measure proactive activities (like completed observations) that predict future safety performance before incidents occur.

(ASP) Associate Safety Professional Practice Test

(ASP) Associate Safety Professional Practice Test

ASP Risk Assessment and Control 4