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.
Page Last Reviewed/Updated Tuesday, March 09, 2021