Event Notification Report for January 29, 2000
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
01/28/2000 - 01/29/2000
EVENT NUMBERS
36641
Power Reactor
Event Number: 36641
Facility: HATCH
Region: 2 State: GA
Unit: [1] [] []
RX Type: [1] GE-4,[2] GE-4
NRC Notified By: ANDY DISMUKE
HQ OPS Officer: BOB STRANSKY
Region: 2 State: GA
Unit: [1] [] []
RX Type: [1] GE-4,[2] GE-4
NRC Notified By: ANDY DISMUKE
HQ OPS Officer: BOB STRANSKY
Notification Date: 01/29/2000
Notification Time: 17:20 [ET]
Event Date: 01/29/2000
Event Time: 15:40 [EST]
Last Update Date: 01/29/2000
Notification Time: 17:20 [ET]
Event Date: 01/29/2000
Event Time: 15:40 [EST]
Last Update Date: 01/29/2000
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(ii) - ESF ACTUATION
10 CFR Section:
50.72(b)(2)(ii) - ESF ACTUATION
Person (Organization):
CAUDLE JULIAN (R2)
CAUDLE JULIAN (R2)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | N | 0 | Cold Shutdown | 0 | Cold Shutdown |
BLOWN FUSE CAUSES VALVES TO REPOSITION.
A short circuit in a relay coil caused a blown fuse and resulted in the following actuations: the main condenser mechanical vacuum pump tripped, turbine steam packing exhausters received a trip signal (they were not running at the time), partial primary containment isolation system (PCIS) Group 2 isolation (outboard valves), and a partial PCIS Group 1 isolation (outboard main steam line drain and reactor water sample valves). The licensee reported that all actuations were expected for this condition.
The faulty relay has been electrically isolated for repair, and the blown fuse was replaced.
The NRC resident inspector has been informed of this event by the licensee.
A short circuit in a relay coil caused a blown fuse and resulted in the following actuations: the main condenser mechanical vacuum pump tripped, turbine steam packing exhausters received a trip signal (they were not running at the time), partial primary containment isolation system (PCIS) Group 2 isolation (outboard valves), and a partial PCIS Group 1 isolation (outboard main steam line drain and reactor water sample valves). The licensee reported that all actuations were expected for this condition.
The faulty relay has been electrically isolated for repair, and the blown fuse was replaced.
The NRC resident inspector has been informed of this event by the licensee.