Hazard Identification and Risk Assessment Flashcards
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Read the first 7 Hazard Identification and Risk Assessment flashcards as text
Which type of risk assessment method uses descriptive categories such as 'low,' 'medium,' and 'high' rather than numerical values?
Answer: Qualitative risk assessment
Qualitative risk assessments use descriptive categories and relative rankings rather than precise numerical probabilities or consequence values.
An employer is reviewing a new chemical process. Which hazard identification technique involves systematically applying guide words such as 'no flow' or 'reverse flow' to identify deviations?
Answer: Hazard and Operability Study (HAZOP)
HAZOP uses structured guide words applied to process parameters to systematically identify ways a process can deviate from its intended design.
Which of the following is a psychosocial hazard in the workplace?
Answer: Excessive workload leading to chronic workplace stress
Psychosocial hazards arise from the design, organization, and management of work and can cause psychological harm such as stress, burnout, or anxiety.
A 'bow-tie analysis' in risk assessment is best described as:
Answer: A diagram showing both the causes of a hazardous event and its consequences, with controls on each side
Bow-tie analysis combines a fault tree (causes/threats on the left) with an event tree (consequences on the right), placing the hazardous event at the center with controls visualized on each side.
When assessing radiation hazards, which type of ionizing radiation has the greatest penetrating power?
Answer: Gamma rays
Gamma rays are electromagnetic radiation with very high penetrating power, capable of passing through the human body and requiring dense shielding like lead or thick concrete.
Which scenario demonstrates 'substitution' as a hazard control measure?
Answer: Replacing a highly toxic cleaning solvent with a less toxic biodegradable alternative
Substitution replaces a hazardous material or process with a less hazardous one, reducing risk at the source.
Which of the following statements about risk tolerance is MOST accurate?
Answer: Risk tolerance reflects an organization's willingness to accept a given level of residual risk based on its context and values
Risk tolerance varies by organization, industry, regulatory environment, and stakeholder expectations, and guides decisions on which residual risks are acceptable.