X hits on this document

637 views

0 shares

0 downloads

0 comments

176 / 220

ATTACHMENT 26

1. SYSTEM SAFETY

A systems approach provides a logical structure for problem solving which views the entire system as an integrated whole.  Consequently, to ensure such a system is as safe as possible, risks must be assessed and managed in all components of this system.  Civil aviation is such a system.  Accordingly, it should be recognized that in such a complex and dynamic system, all threats to safety cannot be avoided and predicted; hence prevention cannot be relied on alone.  It must also be recognized that system designs do not completely preclude high consequences for every threat, hence design features alone cannot be relied on.  To achieve a high level of confidence, safety must be designed into and hazards eliminated or minimized.

Some basic concepts of system safety are:

Safety should be built into the system, not added on to a completed design

Safety is a property of the system, not a component

Accidents are not always caused by failures and all failures do not cause accidents

Analysis to prevent the accident is emphasized instead of reacting to the accident

Emphasis is on identifying hazards as early as possible and then designing to eliminate or control those hazards

Trade-offs and compromises are recognized in system design

This workgroup has considered these system safety concepts and incorporated key concepts into the proposed oversight system.

Document info
Document views637
Page views637
Page last viewedSat Dec 10 23:10:21 UTC 2016
Pages220
Paragraphs5397
Words68086

Comments