Systems Engineering
System engineering can best be explained as coordinating multiple tasks within the two disciplines of engineering and engineering management. This paper highlights the systems method of coordinated tasks and its relevance concerning current and future business system life cycles: concept, design, planning, testing, optimization, and deployment. It defines the boundaries necessary for a robust life cycle and analysis to occur.
4. Requirements Types
4.5 Safety
Safety is the state of being protected against adverse consequences to living things, or damage and destruction of inanimate objects. It is an inverse measure of other risks than those under the previous heading. So a higher safety level is measured by lower risks. Under the principle of "protecting the innocents", hazards to a crew that volunteers to accept a risk can be higher than those allowed to the public at large. A safe system, such as a nuclear power plant or passenger airplane, may have less than one expected accident during the system life. So safety often involves assessing low probability events. Requirements to maintain control of a system despite failures, inherent fail-safe design, design margins, backup systems, and redundancy can improve safety when properly implemented.