COSS Accident Investigation Principles 2

Question 1

Which analysis technique uses a tree diagram to trace the logical combination of events and conditions that led to an accident?

Accepted Answer

Fault tree analysis

Answer

Fault tree analysis (FTA) uses a top-down tree diagram to map the logical combinations of failures, errors, and conditions that can result in an accident.

Question 2

When should the accident scene be altered or cleaned up after a serious workplace injury?

Accepted Answer

Only after OSHA has been notified and, if required, granted permission

Answer

For fatalities and hospitalizations, OSHA regulations require employers to notify OSHA and generally preserve the scene until OSHA inspects or grants permission to proceed.

Question 3

Which of the following BEST describes a 'proximate cause' in accident investigation?

Accepted Answer

The immediate event or condition that directly produced the injury

Answer

The proximate (or direct) cause is the immediate event or condition that directly resulted in the accident or injury.

Question 4

A safety investigator reviews maintenance records, training logs, and inspection reports during an accident investigation. This phase is best described as:

Accepted Answer

Document review and records analysis

Answer

Reviewing maintenance records, training logs, and inspection reports is a document review and records analysis phase that helps identify management system failures.

Question 5

What is the primary purpose of re-enacting or reconstructing an accident during an investigation?

Accepted Answer

To verify witness accounts and identify physical cause factors

Answer

Accident reconstruction helps investigators verify witness statements and identify physical and environmental factors that contributed to the event.

COSS - Certified Occupational Safety Specialist Practice Test

COSS - Certified Occupational Safety Specialist Practice Test

COSS Accident Investigation Principles 2