Hazard assessment
The goal of hazard assessment is to set requirements for mitigating the
risk due to these hazards.
Primary hazard assessment
The activities involved in primary hazard assessment are
- Identify the hazards that might implement the
risks.
- Set measures and
sensors for quantifying the hazards
- Set thresholds for
alarming about different
risks of these hazards
Example
Suppose that a certain unit is designed to operate in the range of temperatures between Tmin and Tmax. Then the hazard assessment may include:
- Specification of the
risk for the
system and the environment if the unit is operated outside of the temperature range
- Requirement for a thermometer to measure the temperature
- Requirements about how the system should behave when outside the temperature range
- Requirements about how to inform the
operators about crossing the range boundaries.
Recursive hazard assessment
The hazard considered may result from various sources. For example, the unit temperature might raise due to a controller problem, such as a thermostat being stuck on or off. The sources for the primary hazards are also
hazards that should be specified, as above.
Updated on 26 Mar 2017.