The dictionary defines hazard as a danger or risk. However, in this guide we distinguish between a hazard and a risk. According to the guide, a hazard is occasional, depending on the temporal situation, while a risk is an invariant property of the system.
The risks of operating a boiler include explosion when it is too hot. The corresponding hazards include thermometer stuck on, shortage in the control unit, etc.
A hazard is an undesired situation. A situation is undesired if the operation design is not prepared to handle it, namely, if it is not in the design scope.
According to the resilience model ... ... a hazard is associated with an exceptional situation.
When a hazard implements a risk, the hazard becomes a threat. The relationships between these terms are described in the Extended Swiss Cheese Model ...
The goals of resilience-oriented design include preventing hazards and protecting from hazard. Protection is based on automatic automatic detection. This is possible if we formalize the term.
A hazard is a situation not included in the knowledge base of normal operation.
In the navigation system presented here ..., the scenario setting [Normal navigation, Idle] is a hazard, because it is not part of the scenario knowledge base.
Updated on 29 Mar 2017.