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controls. The cognizant FAA system safety manager usually reviews the following documents at this point:
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· Preliminary Hazard or Accident Risk Assessment Reports approved by both the
contractor's program manager and system safety manager
· Draft preliminary checklists
· Scenarios, including planned operations
· Current hazards lists and risk assessments
· System and subsystem descriptions
· Other hazard reports.
During the documentation review, the following key points should be checked:
· Preliminary hazards analysis activities
· Effectiveness of verification effort
· Changes to the SDR baseline
· Proposed operations and ground support equipment
· Proposed facilities design.
Finally, the government system safety manager must determine if the following requirements have been
met:
· Preliminary design meets requirements established by the negotiated contract
· Hazards, compatible with the level of system development have been identified
· Proposed hazard controls and verification methods are adequate
· Safety-critical interfaces have been established and properly analyzed.
· A Hazard Tracking and Incident Reporting System are in place.
Critical Design Review (CDR)/CDR Safety Review
CDR occurs when the detail design is complete and fabrication drawings are ready to release. The Safety
CDR centers on the final hazard controls incorporation into the final design and intended verification
techniques. Requirements compliance is assessed. By this review, some design related safety hazards/risks
will be closed, however, some hazards/risks may remain open with management’s cognizance. The
information sources to review are:
· SER and/or DAR verified by program manager
· Operating and support hazard analysis approach
· Operating timeline matrices.
· Operational scenarios identifying:
· Hazardous operations
· Support equipment planning and preliminary design
FAA System Safety Handbook, Chapter 6: System Safety Guidelines for Contracting
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· Proposed procedures list
· Proposed operational hazard controls.
· Hazard Tracking and Risk Resolution Results
The key points for evaluation are:
· System hazard analysis activities
· Operating and support hazard analysis activities
· Training requirements
· Personnel protection requirements
· Safety-critical support equipment design
· Effectiveness of design hazard controls
· Interface analysis.
The requirements that must be met at CDR for a successful program are:
· Final design meets negotiated contractual requirements
· Hazard controls have been implemented and verification methods defined
· Support equipment preliminary design hazards and controls have been identified
· All interface analyses are complete
· Contractor certification that all contractual design requirements are met.
Pre-operational Safety Review
At this review, the contractor presents the final hazard reports with controls incorporated and verified for
both the operational hardware and the support equipment. Ideally, procedures and technical orders are
complete; however, if they are not, then a tracking system must ensure that controls are incorporated and
safety validation is performed prior to first use. The following information sources should be reviewed:
· Completed and verified operating and support hazard analyses (O&SHA)
· Approved change proposals
· Completed and verified system hazards analyses
· Completed and verified checklists
· Contractor's hazard closeout logs
· Summary of hazards analysis results and assessment of residual risk
The key points for evaluation are:
· Operating and support hazards analysis
FAA System Safety Handbook, Chapter 6: System Safety Guidelines for Contracting
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· Changes to CDR baseline
· System hazard analysis
· Closeout of action items
· Assessment of residual risk.
The requirements for a successful safety program at the pre-operational phase are:
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System Safety Handbook系统安全手册下(10)
