Part 21 Report - 1998-360

LICENSEE: SAIC, INC, EGS DIVISION SITE: SAIC, INC, EGS DIVISION EN NUMBER:34190 DOCKET: EVENT DATE: 05-07-98 RX TYPE: EVENT TIME: 01:00 VENDORS: NOTIFY DATE: 05-07-98 EMERGENCY CLASS: N/A REGION: 2 STATE: AL TIME: 17:14 OPS OFFICER: BOB STRANSKY 10 CFR SECTION: CDEG 21.21(c)(3)(i) DEFECTS/NONCOMPLIANCE 10CFR PART 21 REPORT REGARDING INCORRECTLY INSTALLED MOVABLE CONTACTS IN CUTLER-HAMMER RELAYS PROVIDED TO DUKE POWER COMPANY AND GEORGIA POWER COMPANY. MOVABLE CONTACTS IN A CUTLER-HAMMER D26MA 4-POLE FRONT ATTACHMENT FOR A D26 RELAY WERE FOUND TO BE INSTALLED UPSIDE DOWN. THE PROBLEM WAS IDENTIFIED TO CUTLER-HAMMER IN OCTOBER 1997, AND IS THOUGHT TO BE A RANDOM OCCURRENCE. HOWEVER, THE VENDOR HAS TAKEN STEPS TO PREVENT RECURRENCE. THE CALLER REPORTED THAT WITH THE INCORRECTLY INSTALLED MOVABLE CONTACTS, THE RELAY WILL WORK PROPERLY WHEN NEW, BUT THE COPPER CONTACT SURFACE WILL BE BURNED AWAY BY REPEATED OPENING AND CLOSING OF THE RELAY, INCREASING CONTACT RESISTANCE. (THE OTHER SIDE OF THE CONTACT IS COATED WITH SILVER TO PREVENT THIS PROBLEM.) THIS CONDITION COULD LEAD TO UNSATISFACTORY OPERATION OF THE RELAY CONTACTS AT SOME POINT IN THE FUTURE. THE CALLER STATED THAT THE DATE CODES OF POTENTIALLY AFFECTED RELAY ATTACHMENTS WOULD BE PROVIDED TO THE NRC IN A LETTER TO BE ISSUED ON 05/08/98. HOWEVER, A TOTAL OF SIX POTENTIALLY AFFECTED RELAY ATTACHMENTS WERE SOLD TO GEORGIA POWER COMPANY, AND 80 RELAY ATTACHMENTS WERE SOLD TO DUKE POWER COMPANY. A SIMPLE VISUAL INSPECTION OF THE ATTACHMENT WILL DETERMINE WHETHER THE CONTACTS ARE ORIENTED CORRECTLY.

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