Which two factors are used to calculate risk in the Marine Corps Operational Risk Assessment?

Which two factors are used to calculate risk in the Marine Corps Operational Risk Assessment?

• A. Time of day and weather
• B. Number of personnel
• C. Probability of occurrence and severity
• D. Location and equipment value

Answer: (C)

In the Marine Corps Operational Risk Assessment, risk is determined by combining how likely a hazard is to occur with how severe the consequences would be if it does. The two factors used are probability of occurrence and severity of consequences. Probability of occurrence is the chance the hazard will happen under the planned actions and conditions. Severity describes the potential harm, damage, or mission impact if the hazard materializes. By evaluating both factors, you place the risk on a matrix or scale to decide what controls or mitigations are needed. For example, a hazard with a moderate chance of happening but the potential for serious injury or mission loss yields a high risk that requires strong mitigation. Time of day and weather, number of personnel, and location or equipment value can influence either probability or severity, but they are not the two factors used in the calculation themselves. They are inputs that help determine the probability and severity, which is why the combination of probability and severity is the correct basis for the risk assessment.

In the Marine Corps Operational Risk Assessment, risk is determined by combining how likely a hazard is to occur with how severe the consequences would be if it does. The two factors used are probability of occurrence and severity of consequences. Probability of occurrence is the chance the hazard will happen under the planned actions and conditions. Severity describes the potential harm, damage, or mission impact if the hazard materializes.

By evaluating both factors, you place the risk on a matrix or scale to decide what controls or mitigations are needed. For example, a hazard with a moderate chance of happening but the potential for serious injury or mission loss yields a high risk that requires strong mitigation.

Time of day and weather, number of personnel, and location or equipment value can influence either probability or severity, but they are not the two factors used in the calculation themselves. They are inputs that help determine the probability and severity, which is why the combination of probability and severity is the correct basis for the risk assessment.