Risk Assessment & Hazard Identification Flashcards
7 cards from real SAF 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 & Hazard Identification flashcards as text
Which analysis technique uses a tree-like diagram to trace the logical combinations of events that could lead to a defined undesired top event?
Answer: Fault Tree Analysis
Fault Tree Analysis (FTA) uses Boolean logic gates in a top-down tree structure to identify combinations of causes leading to a specific top-level failure or hazard.
Workplace hazard identification inspections should be conducted:
Answer: At regular intervals and whenever work conditions change significantly
Inspections should occur regularly and also whenever there are changes to processes, equipment, or the work environment that could introduce new hazards.
A Bowtie diagram in risk management illustrates:
Answer: Threats and consequences around a central hazardous event, with barriers on both sides
A Bowtie diagram places the hazardous event at the center, showing threats and prevention barriers on the left and consequences with recovery barriers on the right.
Which of the following BEST represents a 'quantitative' risk assessment approach?
Answer: Calculating a numerical probability of fatality per person per year
Quantitative risk assessment (QRA) uses statistical data and mathematical modeling to assign numerical probabilities and frequencies to risk outcomes.
When a safety professional conducts a risk assessment for a new process, the FIRST action should be:
Answer: Gather information about the process, materials, and equipment involved
Information gathering — including process flow, chemicals used, equipment specifications, and regulatory requirements — is the essential foundation before hazards can be identified.
In OSHA's process safety management (PSM) standard, a 'process hazard analysis' (PHA) must be revalidated at least every:
Answer: 5 years
OSHA PSM (29 CFR 1910.119) requires that PHAs be revalidated and updated at least every five years after the initial PHA is completed.
Which of the following hazard identification techniques is MOST effective for identifying hazards in complex, continuous chemical process systems?
Answer: Hazard and Operability Study (HAZOP)
HAZOP is specifically designed for continuous process systems, using guide words to systematically examine deviations in process parameters like flow, temperature, and pressure.