Pressure Relief Power Failure

 
By 29 April 2015
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Power failure will shut down all motor driven rotating equipment such as pumps, compressors, air coolers, and reactor agitators. As with cooling water failure, power failure can have a cascading negative affect on other equipment and systems in the plant. Different scenarios should be considered for this contingency depending upon whether the power interruption is local (to a single equipment item), to a unit substation, or plant-wide. Adequate backup features should be included in the plant’s electrical design to reduce the probability of a major power interruption to an acceptable level.