Risk Assessment and Management Flashcards
7 cards from real ASP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Risk Assessment and Management flashcards as text
A safety professional calculates the Probability of Failure on Demand (PFD) for a safety instrumented function (SIF). A PFD of 0.01 corresponds to which Safety Integrity Level (SIL)?
Answer: SIL 2
SIL 2 corresponds to a PFD range of 0.001 to 0.01, meaning the safety function fails on demand between 0.1% and 1% of the time.
Which qualitative risk assessment technique uses a structured 'what-if' format with a standardized set of guide words such as 'more,' 'less,' 'no,' and 'reverse'?
Answer: Hazard and Operability Study (HAZOP)
HAZOP applies guide words to process parameters to systematically identify deviations that could lead to hazardous consequences.
A company performs a bow-tie analysis. What does the LEFT side of the bow-tie diagram represent?
Answer: Threats and prevention barriers leading to the top event
The left side of the bow-tie depicts threats (causes) and the preventive barriers that stop them from causing the central hazardous event.
In a quantitative risk assessment, what does the term 'Individual Risk' specifically measure?
Answer: The annual probability of death for a specific individual at a given location
Individual risk quantifies the probability per year that a specific person located at a defined point will be fatally injured by a hazard.
A facility reviews its process safety information (PSI) as part of a Process Hazard Analysis (PHA). Under OSHA PSM (29 CFR 1910.119), how often must a PHA be revalidated?
Answer: Every 5 years
OSHA PSM requires that PHAs be updated and revalidated at least every five years to ensure they reflect current process conditions.
Which risk analysis technique assigns a Risk Priority Number (RPN) by multiplying severity, occurrence, and detection ratings?
Answer: Failure Mode and Effects Analysis (FMEA)
FMEA calculates RPN = Severity × Occurrence × Detection to prioritize failure modes requiring corrective action.
A safety professional is reviewing a risk register. An identified risk has a high likelihood but very low severity. Which risk response strategy is MOST appropriate?
Answer: Monitor the risk and apply low-cost controls to reduce frequency
High-likelihood, low-severity risks are best managed by monitoring and applying inexpensive controls to reduce frequency, since their impact per event is limited.