LICENSEE: ROCHESTER GAS & ELECTRIC CORP.
SITE: GINNA 1		EN NUMBER:35731
DOCKET:		EVENT DATE: 05-18-99
RX TYPE: PWR		EVENT TIME:
VENDORS: W-2-LP		NOTIFY DATE: 05-18-99
EMERGENCY CLASS: N/A	REGION: 1	STATE: NY	TIME: 12:47
OPS OFFICER: STEVE SANDIN
10 CFR SECTION: CCCC UNSPECIFIED PARAGRAPH

UNIT	SCRAM CODE	RX CRIT	INIT PWR	INITIAL MODE	CURR PWR	CURRENT MODE
1	N	Y	98	Power Operation	98	Power Operation

DEFICIENT CONTROL RELAYS IDENTIFIED DURING PRE-INSTALLATION TESTING.

ON 4/2/99, THE LICENSEE IDENTIFIED THAT CONTROL RELAYS (NBFD65NR) MANUFACTURED BY EATON CORPORATION CONTAINED A MANUFACTURING DEFICIENCY, I.E., "THE RELAY COIL HAD BEEN INCORRECTLY WIRED SUCH THAT THE INTERNAL RELAY DESIGN, WHICH INCLUDES A PICK UP AND A HOLD COIL, WOULD OPPOSE EACH OTHER AT LOWER VOLTAGES AND PROHIBIT HOLDING COIL ACTUATION WHICH RESULTED IN EXCESSIVE RELAY CHATTER." THIS DEFECT WAS IDENTIFIED DURING PRE-INSTALLATION TESTING PRIOR TO USE IN THE REACTOR TRIP LOGIC. NO DEFICIENT RELAYS ARE INSTALLED.