Dr. Laura Helmrich-Rhodes,CSPAssociate Professor

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Students will be able to:◦ Define “Accident”◦ Discuss different Accident Causation Theories◦ Describe an Accident Investigation Plan◦ Differentiate roles in AI◦ Begin to use Human Error Concepts in AI◦ Begin to describe the Accident Investigation

Process

Are all accidents preventable??◦ “Event without Causes?”◦ “Unplanned & Uncontrolled?”

Loss?

Definition of an Accident◦ Unwanted or undesired event which results in

physical harm and/or property damage (Vincoli)◦ An accident is a specific, unexpected, unusual and

unintended external action which occurs in a particular time and place, with no apparent and deliberate cause but with marked effects

What does the theory state? What are the pro’s, cons, current perceptions about the theory?◦ Domino Theory◦ Safety Pyramid◦ Unsafe Acts versus Unsafe Conditions◦ Multiple Causation Theories◦ Pure Chance Theory◦ Energy Transfer Theories

How can these accident causation theories aid an accident investigation?◦ Domino Theory- Heinrich (1931)

◦ Safety Pyramid- Heinrich, see also Bird

◦ Unsafe Acts versus Unsafe Conditions (Petersen, mgt problem w/ each hazard)

◦ Multiple Causation Theories (grouped into behavioral and environmental)

◦ Pure Chance Theory (what happens if people believe this?)

◦ Energy Transfer Theories every change of energy there is a source, a path and a receiver

◦ Is there any ONE theory which should be used?

Let’s discuss this!

*difference between a program and a procedure?

Written Clear Concise instructions What to do When to do it

Inside the organization?◦ Who?

Outside investigators?◦ Who?

(See Vincoli pg 57-62)

What are the rolls of those people?

Which accidents should be investigated?

Report the accident occurrence to a designated person within the organization

Provide first aid and medical care to injured person(s) and prevent further injuries or damage

Investigate the accident Identify the causes Report the findings Develop a plan for corrective action Implement the plan Evaluate the effectiveness of the corrective action Make changes for continuous improvement

Disclaimer-huge subject! Just touching tonight

Is it a “cause” or a “symptom?”

Should be able to:◦ Define “Accident”◦ Discuss different Accident Causation Theories◦ Describe an Accident Investigation Plan◦ Differentiate roles in AI◦ Begin to use Human Error Concepts in AI◦ Begin to describe the Accident Investigation

Process