The impact of the accident at Three Mile Island on plant control and instrumentation philosophy

  • F. Catlow


Instrumentation systems as defined in this book do not provide direct inputs to control systems but provide data for recording or display. The display, or so-called man—machine interface, is a key part of instrumentation systems which is easily neglected to the detriment of overall performance. Consideration of the accident at the Three Mile Island nuclear power plant returns us to an issue raised in the very first paper, the credibility of instrumentation displays. The operator must be in a position to construct an accurate mental picture of conditions and events within the plant, simply on the basis of instrument readings. When these readings conflict, the operator is in the unenviable position of having to decide which are correct. (Eds.)


Nuclear Power Plant Control Room Safety Parameter Electric Power Research Institute Instrumentation System 
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© Chapman & Hall 1990

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  • F. Catlow

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