Ann Rpt - Forewarn of Failure - Critical Equip at Next-Gen

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L. Bond, “On-line, Intelligent, Self-Diagnostic Monitoring for Next Generation Nuclear Power Plants,” NERI99-168 Project Summary (September 1999 – January 2003) in “Nuclear Energy Initiative – 2002 Annual Report,” DOE/NE-0122 (pp. 53−56). 25 26 Fig. 1. Typical baseline EPRI data vs time from the Allis Chalmers motor. Top three plots show the three-phase voltages (Vi). Middle three plots show the three-phase currents (Ii). The sinusoidal variation in these plots corresponds to 60 Hz. The bottom plot shows instantaneous power, P, as the sum of the products of the three-phase currents times the corresponding voltages.

Third, the combination of the previous two items required work by DE&S during the last week of February to meet the Task 1 delivery date. Fourth, DE&S informed the ORNL principal investigator on Monday February 25, 2002 that they had exceeded the Task 1 budget ($15K) by $2K. The DE&S request for additional funds to cover the $2K overage was declined. Both of the deliverables were complete by the Task 1 deadline of 1 March 2002 (two test sequences and characterization of those sequences). Fifth, a quality check of new DE&S data revealed that the data-sampling rate was too low, so no further analysis of their data was appropriate.

Summary of Improvements for Commercialization Current state-of-the art for PSDM Forewarning (a) analyst-intensive (b) retrospective analysis of (c) archival data via (d) desktop computer to give (e) binary forewarning that is (f) machine- and fault-specific, after which the (g) failure occurs in an uncontrolled fashion (h) at high cost of laboratory resources (i) depending on laboratory infrastructure Bridge ≤ 3 years now now now ≤ 3 years > 3 years > 3 years Ideal for commercial forewarning device (a’) analyst-independent (b’) prospective analysis of (c’) (near) real-time data via (d’) portable computer to give (e’) the remaining time to failure that is (f’) independent of specific machine or fault (g’) allowing failure avoidance or control ≥ 5 years (h’) at reasonable cost > 5 years (i’) reliably/independently for years A first-generation commercial device will need one additional and vital feature: analystindependence.

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