Part 21 Report - 1999-270
| 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.
Page Last Reviewed/Updated Thursday, March 25, 2021