Part 21 Report - 1998-560

LICENSEE: WESTRONICS SITE: WESTRONICS EN NUMBER:34607 DOCKET: EVENT DATE: 06-23-98 RX TYPE: EVENT TIME: 00:00 VENDORS: NOTIFY DATE: 08-05-98 EMERGENCY CLASS: N/A REGION: 4 STATE: TX TIME: 15:25 OPS OFFICER: CHAUNCEY GOULD 10 CFR SECTION: CCCC 21.21 UNSPECIFIED PARAGRAPH PART 21 REPORT - WESTRONICS OF KINGWOOD, TX REPORTED A DEFECT IN CERTAIN RECORDERS THE VENDOR HAS DETERMINED THAT THREE WESTRONICS SERIES 1200A COMMERCIAL GRADE RECORDERS EXHIBITED AN ANOMALY WHEREBY THE BAR-GRAPH DISPLAYS WENT BLANK OR FROZE, POTENTIALLY PRESENTING ERRONEOUS INFORMATION TO THE OPERATOR. THE INTERNAL "BEEPER", WHICH ANNUNCIATES KEY STROKES WHILE PROGRAMING, MIGHT SOUND. THIS ANOMALY IS ASSOCIATED WITH NUMEROUS REPETITIVE OPENINGS AND CLOSURES OF THE RECORDER DOOR, WHICH MAY CAUSE STRAIN RELATED FRACTURES IN THE FLAT-CONDUCTOR CABLE ROUTED TO THE DOOR-MOUNTED DISPLAY. AFTER THE FAILURE, THE RECORDER CONTINUES TO MEASURE AND PROCESS DATA CORRECTLY, AND TO ALARM ON PROCESS SIGNALS THAT HAVE EXCEEDED NORMAL BOUNDARIES. THE RECORDER PENS ALSO INDICATE SIGNAL LEVELS CORRECTLY. HOWEVER, THE DATA MEASURED AND RECORDED MAY NOT MATCH THE DATA WHICH IS DISPLAYED ON THE ALPHANUMERIC AND BAR-GRAPH DISPLAY. THERE HAVE BEEN NO REPORTED FIELD FAILURES OF THE SAFETY RELATED SERIES 1200 (1200AC AND 1200BC) RECORDERS; HOWEVER, THE MANUFACTURER IS NOTIFYING CUSTOMERS WHO HAVE PURCHASED THESE RECORDERS. THE 1200AC AND 1200BC RECORDERS HAVE BEEN SHIPPED TO THE FOLLOWING NUCLEAR FACILITIES: BEAVER VALLEY, RIVER BEND STATION AND ARKANSAS NUCLEAR ONE.

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