Regulatory Treatment of On-Line Surveillance and Diagnostic Systems
For almost two decades, various university and national laboratory research groups have been developing surveillance and diagnostic techniques for application to nuclear power plants. For more than a decade, many of these techniques included various types of artificial intelligence based systems to develop a data-based model as a substitute for first principles models that were found deficient. The motivation for such techniques was to monitor the condition of signal channels with a view to reducing the number of calibrations required by the Nuclear Regulatory Commission (NRC). When the Electric Power Research Institute (EPRI) approached the NRC for approval of these systems, such use was not approved, primarily because of the uncertainty of the magnitude of the errors associated with the monitoring technique when used for sensor calibration. After eight years of interaction with the NRC, the EPRI submitted Topical Report #104965 “On-Line Monitoring of Instrument Channel Performance.” The NRC replied with 14 conditions that had to be met for acceptance. This paper discusses the EPRI topical report and NRC’s response.
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- Memorandum to Stephen Dembek from Evangelos C. Marinos, June 22, 2000 Subject: The Staff Review of EPRI Topical Report (TR) 104965, “On-Line Monitoring of Instrument Channel Performance,” Final Report, November 1998, (TAC No. M93653)Google Scholar
- EPRI Topical Report (TR) 104965, “On-Line Monitoring of Instrument Channel Performance,” Final Report, November 1998, (TAC No. M93653)Google Scholar