A.220.127.116.11 Prioritize hazards for corrective action.
Hazards should be prioritized so that corrective action efforts can be
focused on the most serious hazards first. A categorization of hazards may
be conducted according to the mishap risk potential they present.
safety design order of precedence (see 4.4
). The ultimate goal of a system safety program is to design systems
that contain no hazards. However, since the nature of most complex systems
makes it impossible or impractical to design them completely hazard-free, a
successful system safety program often provides a system design where there
exist no hazards resulting in an unacceptable level of mishap risk. As
hazard analyses are performed, hazards will be identified that will require
resolution. The system safety design order of precedence defines the order
to be followed for satisfying system safety requirements and reducing risks.
The alternatives for eliminating the specific hazard or controlling its
associated risk are evaluated so that an acceptable method for mishap risk
reduction can be agreed to.