Credible hazard

Credible hazards have been identified, assessed, understood, and documented. 

Mitigation The protection of people and physical assets from the effects of any remaining credible hazards through fire protection systems. 

To design general area gas detection, each area should be evaluated based on its volume for credible gas release hazards. The factors to consider when determining credible hazards are ... 

If the prompt reveals that a credible hazard exists, the design team should ask themselves questions, such as ... 

The conclusion rapidly reached is that an external fire is a credible hazard and we need to design against it. 

Secondly, stracture provides the reader with a means of evaluating completeness. The goal-based assessment methodology and a number of common risk assessment techniques can occasionally be criticised for their inability to clearly demonstrate completeness. A convincing safety argument may be set out based on the evident facts but how can one be reassured that all credible hazards have been considered The application of structure to an argument facilitates the reader in determining this and perhaps invites their welcome criticism. 

You should identify all credible hazards and accidents and the risks associated with them. 

ACP.Sl. There is sufficient confidence that mitigating credible hazards will demonstrate that the insulin pump is adequately safe for routine use. Arguing over hazards is a widely accepted strategy in safety engineering, and this fragment of the confidence case is simple to construct. 

ACP.A2. There is suffieient confidenee that the list of credible hazards is complete and eorreet. Inadequate definition of a hazard or omission of a hazard might invalidate the safety elaim. 

The analysis will likely be conducted in the same manner as a Hazard Identification (HAZID). However, the discussion will focus on the consequences of credible hazards, particularly major safety or environmental consequences. 

Dutyholders should ensure they can demonstrate that staffing arrangements are adequate to detect, diagnose and recover any reasonably credible hazardous scenario. 

To illustrate this definition of context, consider the example in Fig. 4. A hazard list must be the hazard list created for the system in question because the ordinary meaning of the words all credible hazards is that they are hazards of the system in question. The hazard list must also be complete and correct because inference DIP. SI would be invalid if supporting goals DIP.G2-DIP.G6 did not accurately portray all relevant hazards. The hazard list can be assumed to have these properties throughout the argument supporting goals DIP.G2-DIP.G6. 

A credible hazard is an identified hazard that is reasonable and realistic based on the best design information available. The hazard causal factors (HCFs) are plausible and convincing. When the hazard or its causal factors can be proven to not exist, then the hazard is no longer credible. If a hazard has an extremely small probability of occurrence that does not mean it is not credible credible refers to the fact that the hazard is possible, regardless of probability. 

A worst-credible hazard is a hazard that is credible and where the hazard risk parameters are taken at the maximum, or worst-case values. For example, the hazard probability is taken at worst-case possibility, and the hazard severity is taken at worst-case scenarios. 

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