Accident Investigation and Analysis Flashcards
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Read the first 7 Accident Investigation and Analysis flashcards as text
An Events and Causal Factors (ECF) chart is most useful for:
Answer: Displaying the chronological sequence of events and conditions that led to an accident
An ECF chart maps the timeline of events (boxes) and causal factors (ovals) to reveal how multiple conditions combined to produce the accident.
Under OSHA recordkeeping rules, a work-related fatality must be reported to OSHA within:
Answer: 8 hours
Employers must report work-related fatalities to OSHA within 8 hours of learning about the death.
Which of the following best represents a 'corrective action' versus a 'preventive action' in post-accident follow-up?
Answer: Corrective actions address the specific hazard that caused the accident; preventive actions address similar hazards before accidents occur
Corrective actions fix the identified deficiency from the current accident, while preventive actions proactively address similar hazards in other areas before harm occurs.
When interviewing an injured worker immediately after an accident, the safety supervisor should first:
Answer: Ensure the worker's medical needs have been addressed before beginning the interview
The worker's physical and psychological wellbeing takes priority; interviewing should only begin after medical attention has been provided and the worker is stable enough to speak.
The concept of 'change analysis' in accident investigation involves:
Answer: Comparing the pre-accident conditions to the norm to identify what was different at the time of the accident
Change analysis identifies deviations from the normal process or environment — such as substituted materials, modified procedures, or new personnel — that may have contributed to the accident.
In Heinrich's Domino Theory, removing which domino is considered the most practical way to prevent an accident?
Answer: Unsafe Act or Unsafe Condition
Heinrich identified the unsafe act or condition as the central domino; removing it interrupts the accident sequence and prevents injury even if earlier dominoes have fallen.
An accident investigation reveals that multiple workers were injured performing the same task using the same flawed procedure over several years. This pattern most strongly suggests:
Answer: A systemic failure in the safety management system to identify and correct procedural hazards
Repeated injuries from the same cause indicate a management system failure to detect, analyze, and correct a known hazard.