Establishing Goals and Functions for a Plant-Wide Disturbance Analysis and Surveillance System (DASS)

Abstract
This paper discusses part of the work performed for the Electric Power Research Institute under contract RP891-3 for the development of a plant-wide Disturbance Analysis and Surveillance System (DASS) for nuclear power plants. Specifically, a process is developed that allows the DASS design team to maintain control over the scope (number of) and depth (detail) of the plant systems and equipment which must be modelled in order to produce a diagnostic tool which reactor operators should find helpful in recognizing the nature of and in coping with unexplained plant transients.

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