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| 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.
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