5Reliable Systems on a Spatial Scale
Simplicity is prerequisite for reliability.
5.1 Principle 2
A system is a region where EEIS are intended to serve. On a spatial scale, a system can be classified as residential, community, city, country, or global level. Reliability is defined as the duration of an EEIS to function normally and provide the required service to protect human health and the environments under normal conditions. Reliability usually is measured by the time period during which the system will not fail. Therefore, it can be quantified as the time from starting service to failure of the system. EEIS should be designed in such a way that their reliability is quantified with known ...
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