CHST - Construction Health and Safety Technician Incident Investigation and Reporting Questions and Answers Flashcards

Which analysis tool uses a diagram shaped like a fish skeleton to identify multiple root causes of an incident?

Answer: Ishikawa (fishbone) diagram

The Ishikawa or fishbone diagram visually maps cause-and-effect relationships to identify multiple contributing factors to an incident.

Under OSHA's recordkeeping rule, which of the following is NOT considered a 'first aid' treatment and therefore makes a case recordable?

Answer: Use of prescription medications

Use of prescription medications (beyond a single dose on the day of injury) exceeds first aid and makes the case OSHA recordable.

A construction worker fractures a finger on a Monday and is placed on restricted work duties for the remainder of the week. How should this be classified on the OSHA 300 Log?

Answer: Restricted work or job transfer case

When an injury results in restricted work or job transfer rather than days away, it is recorded as a restricted work case on the OSHA 300 Log.

Which incident investigation technique involves repeatedly asking 'why' until the fundamental system failure is identified?

Answer: 5-Whys analysis

The 5-Whys technique iteratively asks 'why' at each level of cause until the root systemic failure is uncovered.

When investigating a near-miss event involving a scaffold plank failure, the investigator should FIRST:

Answer: Photograph and preserve the scene before disturbance

Preserving the scene through photographs and physical evidence before any disturbance is the critical first step in a valid incident investigation.

A supervisor fails to report a recordable injury to the safety department for 10 days. Which OSHA standard is most likely violated?

Answer: 29 CFR 1904.29 — Forms

29 CFR 1904.29 requires that OSHA 300 Log entries be made within 7 calendar days of learning that a recordable incident occurred.

Which of the following best describes a 'contributing cause' in incident investigation terminology?

Answer: A condition that increased the likelihood or severity of the incident but alone would not have caused it

A contributing cause is a factor that worsened or enabled the incident but is distinguished from the direct cause by the fact that it alone was insufficient to produce the outcome.