Accident Investigation and Analysis Flashcards
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Read the first 7 Accident Investigation and Analysis flashcards as text
Which accident causation model uses the concept of 'energy transfer' to explain how injuries occur?
Answer: Haddon Matrix
The Haddon Matrix analyzes accidents in terms of energy transfer between a host, agent, and environment across pre-event, event, and post-event phases.
When should a post-incident critique (after-action review) be conducted following a serious workplace accident?
Answer: As soon as all immediate hazards are controlled and key personnel are available
Post-incident critiques should occur as soon as practicable after the immediate hazards are controlled to capture accurate recollections while they are fresh.
In root cause analysis, a 'latent failure' is best described as:
Answer: A hidden systemic weakness that becomes active when triggered by local conditions
Latent failures are dormant organizational or design weaknesses that lie undetected until combined with other conditions to produce an accident.
The primary purpose of photographing an accident scene is to:
Answer: Provide visual evidence that preserves the scene as found before it is altered
Photographs preserve the original state of the scene as objective evidence before cleanup, repair, or other changes occur.
Which of the following is an example of an 'indirect cause' of a workplace accident?
Answer: A management system that failed to enforce lockout/tagout procedures
Indirect (or underlying) causes are management system failures, such as inadequate policy enforcement, that allow direct hazards to exist.
A 'near-miss' event should be investigated with the same rigor as an injury-producing accident primarily because:
Answer: Near-misses share the same causal factors and represent missed prevention opportunities
Near-misses have the same causal chain as injury accidents; investigating them prevents the same scenario from causing future harm.
The '5 Whys' technique is most effective at identifying which type of accident cause?
Answer: Root causes embedded in systems or management practices
Repeating 'why' iteratively drills past immediate causes to expose deeper systemic or management root causes.