CMSP CMSP Accident Investigation & Analysis 2

Question 1

According to Heinrich's Industrial Accident Prevention Triangle, for every one major injury there are approximately how many minor injuries?

Accepted Answer

29

Answer

Heinrich's Triangle proposes a ratio of 1 major injury to 29 minor injuries to 300 no-injury incidents, highlighting the base of unsafe behaviors.

Question 2

James Reason's 'Swiss Cheese Model' of accident causation illustrates:

Accepted Answer

How holes in multiple defensive barriers can align to allow accidents to occur

Answer

Reason's model shows that accidents occur when gaps in multiple independent defensive layers simultaneously align, allowing a hazard to reach a vulnerable target.

Question 3

'Immediate causes' of accidents are commonly classified as:

Accepted Answer

Unsafe acts and unsafe conditions

Answer

Immediate causes are the direct precursors visible at the time of an accident, categorized as unsafe acts by people or unsafe conditions in the environment.

Question 4

In accident investigation, a 'contributing cause' differs from a 'root cause' in that:

Accepted Answer

Contributing causes increase accident likelihood but alone would not have caused the event

Answer

Contributing causes are enabling factors that increase the probability of an accident but are insufficient by themselves to cause it without the presence of the root cause.

Question 5

The primary purpose of developing 'corrective actions' following a root cause analysis is to:

Accepted Answer

Prevent recurrence by directly addressing identified root and contributing causes

Answer

Corrective actions address the identified causes of an accident to eliminate or control the conditions that allowed it to occur, preventing recurrence.

(CMSP) Certified Mine Safety Professional Practice Test

(CMSP) Certified Mine Safety Professional Practice Test

CMSP CMSP Accident Investigation & Analysis 2