Risk Assessment & Hazard Control Flashcards
7 cards from real SHS 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 Control flashcards as text
Which element is NOT typically included in a formal written hazard control plan?
Answer: Employee social security numbers
Hazard control plans include hazard descriptions, control priorities, responsible parties, and timelines — never personally identifiable information like SSNs.
The concept of 'inherently safer design' is BEST applied by:
Answer: Minimizing hazardous materials or energy at the design stage
Inherently safer design reduces risk by minimizing, substituting, moderating, or simplifying hazards during the design phase rather than adding controls later.
When assessing confined space hazards, which atmospheric condition would classify a space as immediately dangerous to life or health (IDLH)?
Answer: Carbon monoxide concentration of 1,200 ppm
NIOSH defines the IDLH for carbon monoxide as 1,200 ppm, representing an immediate threat to life requiring immediate rescue.
Which risk assessment approach uses historical accident data and statistical analysis to estimate the probability of future events?
Answer: Quantitative risk assessment
Quantitative risk assessment relies on numerical data, historical failure rates, and statistical models to calculate event probabilities.
Safety inspections should be documented primarily to:
Answer: Provide a verifiable record of hazards found and corrective actions taken
Documentation creates an auditable trail showing that hazards were identified, tracked, and corrected, supporting legal compliance and continuous improvement.
Which term describes the probability that a safety system or barrier will function as intended when demanded?
Answer: Probability of failure on demand (PFD)
Probability of Failure on Demand (PFD) quantifies the likelihood that a protective system will fail when it is needed, directly informing risk assessments.
A safety professional conducting a change management review (MOC) should evaluate which of the following FIRST?
Answer: Whether the change introduces any new or increased hazards
The Management of Change process requires a hazard review of proposed changes before implementation to prevent new risks from being introduced.