Risk & Hazard Control Flashcards
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Read the first 7 Risk & Hazard Control flashcards as text
The 'as low as reasonably practicable' (ALARP) principle requires that risk be reduced until:
Answer: Further risk reduction costs are grossly disproportionate to the safety benefit gained
ALARP requires risk reduction to continue until the cost and effort of further reduction is grossly disproportionate to the safety benefit, balancing practicality with protection.
Which method is most appropriate for quantifying the probability of failure of a safety-critical system?
Answer: Quantitative risk assessment (QRA) using failure rate data
Quantitative risk assessment uses mathematical models and historical failure rate data to calculate the probability and consequence of system failures.
A 'near miss' incident should be investigated primarily because:
Answer: Near misses indicate a hazard exists that could cause injury in a future incident
Near misses are unplanned events that did not result in injury but had the potential to — investigating them reveals existing hazards before they cause harm.
Ergonomic hazard controls for preventing musculoskeletal disorders (MSDs) most often involve:
Answer: Redesigning tools, workstations, or tasks to reduce strain and awkward postures
Engineering ergonomic controls redesign the job, equipment, or workspace to fit the worker, reducing force, repetition, and awkward postures that cause MSDs.
Under OSHA's lockout/tagout (LOTO) standard, the purpose of energy isolation is to:
Answer: Prevent accidental startup or release of stored energy during servicing or maintenance
LOTO procedures ensure that hazardous energy sources (electrical, mechanical, hydraulic, pneumatic, chemical, thermal) are isolated and dissipated before servicing begins.
When establishing a safety management hierarchy, which group bears the PRIMARY legal responsibility for workplace safety?
Answer: The employer or organization
Under the OSH Act, the employer has the legal duty to provide a workplace free from recognized hazards likely to cause death or serious physical harm.
A 'permit-to-work' (PTW) system is a hazard control tool used primarily for:
Answer: Authorizing and controlling high-risk non-routine tasks through formal written permission
A PTW system provides a formal, documented process to authorize high-risk activities (confined space entry, hot work, LOTO) and verify all required safeguards are in place before work begins.