CMSP Accident Investigation & Analysis Flashcards

Which accident investigation method uses a top-down logic diagram with AND/OR gates to show combinations of failures that can lead to an undesired event?

Answer: Fault tree analysis

Fault tree analysis uses a deductive, top-down diagram with AND/OR logic gates to map all pathways of failures that can cause a specific undesired event.

The Management Oversight and Risk Tree (MORT) analysis methodology was originally developed for use in which industry?

Answer: Nuclear energy

MORT was developed by the U.S. Atomic Energy Commission and later adapted for use across multiple industries, including mining.

The '5 Whys' accident investigation technique is designed to identify:

Answer: Root causes by iteratively asking why each causal factor occurred

The 5 Whys method drills through successive causal layers by treating each answer as the subject of the next 'why' question until a root cause is reached.

When investigators arrive at a mine accident scene, what should be the FIRST priority?

Answer: Preserve and document the scene before anything is disturbed

Scene preservation through photography, measurements, and detailed documentation must occur before any evidence is moved or conditions change.

A 'near-miss' incident in mine safety is best defined as:

Answer: An unplanned event with injury potential that did not result in harm or property damage

Near-miss events reveal system weaknesses that could lead to serious injury and are valuable learning opportunities because no harm actually occurred.

Which investigation tool uses a visual diagram resembling a fish skeleton to organize potential causes of an accident into major categories?

Answer: Ishikawa (fishbone) diagram

The Ishikawa diagram organizes potential causes into categories such as people, equipment, environment, and methods, branching from a central problem 'spine.'