MEMORANDUM FOR A1 - Air Force E-Publishing

AFI91-202 5 AUGUST 2011 89
Chapter 11
SYSTEM SAFETY
11.1. Overview. This Chapter establishes the roles, responsibilities and policy requirements for
Safety personnel in support of System Safety. It also defines how Safety personnel and
organizations interact, influence and advise the other Air Force communities that are corporately
responsible for System Safety in the Air Force. System acquisition and sustainment Program
Managers are subject to the mandatory policy and guidance described in paragraph 11.1.3
System safety principles are used to manage safety risks in multiple functional areas across the
AF and form the basis for operational safety risk management and management of risks within
nuclear surety activities.
11.1.1. System Safety must be a planned, integrated, comprehensive effort employing both
engineering and management resources. Effective System Safety efforts depend on clearly
defined safety objectives and system performance requirements. System Safety objectives
shall include, but not be limited to, prevention or mitigation of all reportable mishaps that
may be associated with a system and its use and function.
11.1.2. System Safety efforts consist of eight essential elements:
11.1.2.1. Documenting the system safety approach.
11.1.2.2. Hazard identification and analysis over the system life cycle.
11.1.2.3. Assessment of mishap risk, expressed as severity and probability of
consequences.
11.1.2.4. Identification and assessment of potential risk mitigation measures.
11.1.2.5. Implementation of measures to reduce risks to acceptable levels.
11.1.2.6. Verification of risk reduction.
11.1.2.7. Acceptance of residual risks by appropriate authorities.
11.1.2.8. Tracking of hazards and residual risks throughout the system life cycle.
11.1.3. These elements must be documented and periodically reviewed by program
managers.
11.1.3.1. Hazard tracking logs communicate sufficient information to identify and track
the status of each hazard. To ensure appropriate management attention, the status of
hazards is required to be presented at program and technical reviews. The System Safety
effort supports program and technical reviews with current information of all hazards.
The hazard tracking logs should contain:
11.1.3.1.1. A hazard description.
11.1.3.1.2. Unique identification information.
11.1.3.1.3. Risk assessment information, including the initial assessment, the target
risk level, interim assessments, as required, and the final (residual) risk assessment.
11.1.3.1.4. Information concerning the mitigation action(s).