Occupational Safety Engineering Terminologies Quiz

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Questions and Answers

What is the definition of Risk according to the text?

Any event that could have resulted in injury and illness
An unplanned event resulting in death or injury
Expression of impact and possibility of a mishap in terms of potential mishap severity and probability of occurrence (correct)
An undesirable and unexpected event

What is the definition of Hazard according to the text?

Degree of freedom from harm or danger
Any real or potential condition that can cause injury, illness, or death to personnel; damage to or loss of a system, equipment or property; or damage to the environment (correct)
An expression of the impact and possibility of a mishap in terms of potential mishap severity and probability of occurrence
An undesirable and unexpected event

What is the definition of Mishap according to the text?

Any event that could have resulted in injury and illness
An unplanned event or series of events resulting in death, injury, occupational illness, damage to or loss of equipment or property, or damage to the environment (correct)
Expression of impact and possibility of a mishap in terms of potential mishap severity and probability of occurrence
An undesirable and unexpected event

What is the definition of Incident according to the text?

Any event that could have resulted (near miss) or did result (accident) in injury and illness, property damage, environmental release, adverse community reaction, business interruption (C) Signup and view all the answers

What is the definition of Safety according to the text?

Degree of freedom from harm or danger (B) Signup and view all the answers

What is the formal definition of Individual Risk (IR) as per the text?

The frequency with which an individual within a specific group may be expected to sustain a given level of harm from the realization of a specific hazard or particular combinations of hazards. (B) Signup and view all the answers

What is the definition of Societal Risk (SR) according to the text?

The frequency and the number of people suffering a given level of harm from the realization of specified hazards. (D) Signup and view all the answers

What does the formula 𝐑 = 𝑷 × 𝑪γ represent in the context of Risk Assessment?

Calculation of risk considering probability, consequence, and perception factor. (B) Signup and view all the answers

What is the purpose of (F-N) curves in the context of Risk Assessment?

To show the cumulative frequency of all event outcomes with a certain number of fatalities. (C) Signup and view all the answers

What does the activity/agent ranking by Risk Analyst and non-Risk Analyst indicate?

Difference in risk perception between Risk Analyst and non-Risk Analyst. (C) Signup and view all the answers

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Study Notes

Risk and Hazard Definitions

Risk: the likelihood and potential impact of an adverse event or circumstance
Hazard: a situation or substance that has the potential to cause harm
Mishap: an unintended event or sequence of events that results in damage or injury
Incident: an event that does not result in damage or injury, but has the potential to do so
Safety: a state of being where the risk of harm is minimized or eliminated

Risk Assessment Definitions

Individual Risk (IR): the frequency at which an individual is expected to be killed or seriously injured
Societal Risk (SR): the frequency of multiple fatalities or serious injuries in a single event

Risk Assessment Formulas

𝐑 = 𝑷 × 𝑪γ: represents the risk calculation formula, where 𝐑 is risk, 𝑷 is probability, and 𝑪 is consequence
F-N curves: used to display and compare the frequency of accidents with multiple fatalities

Risk Ranking

Activity/agent ranking by Risk Analyst: ranking of activities or agents by a risk analyst based on their risk level
Activity/agent ranking by non-Risk Analyst: ranking of activities or agents by a non-risk analyst, indicating their perceived risk level