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When used as part of an aviation hazard analysis, a "Likelihood" is a specific probability. It is the joint probability of a hazard occurring, that hazard causing or contributing to an aircraft accident or incident, and the resulting degree of loss or harm falling within one of the defined severity categories.
Implementing a risk-ranking methodology to prioritize risks within and across functions. Establishing a risk committee and/or chief risk officer (CRO) to coordinate certain activities of the risk functions. Establishing ownership for particular risks and responses. Demonstrating the cost-benefit of the risk management effort.
The risk rating of the hazard prior to applying the control is known as the 'inherent risk rating'. The risk rating of the hazard with the control in place is known as the 'residual' risk rating. Risk, within the occupational health and safety sphere, is defined as the 'effect of uncertainties on objectives [ 8 ] '.
ORM is the oversight of operational risk, including the risk of loss resulting from inadequate or failed internal processes and systems; human factors; or external events. Unlike other type of risks (market risk, credit risk, etc.) operational risk had rarely been considered strategically significant by senior management.
The continual focus on risk elimination that a control self-assessment can lead to has also been criticised. The process of continual evaluation of risks and making plans to mitigate and eliminate them may lead to an unbalanced corporate culture where risks are eliminated ignoring the risk-return ratio of different business choices. [21]
A root cause analysis identifies the set of multiple causes that together might create a potential accident. Root cause techniques have been successfully borrowed from other disciplines and adapted to meet the needs of the system safety concept, most notably the tree structure from fault tree analysis, which was originally an engineering technique. [7]