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Event Notification Report for July 21, 2004

U.S. Nuclear Regulatory Commission
Operations Center

Event Reports For
07/20/2004 - 07/21/2004

** EVENT NUMBERS **


40882 40884 40885

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Power Reactor Event Number: 40882
Facility: PERRY
Region: 3 State: OH
Unit: [1] [ ] [ ]
RX Type: [1] GE-6
NRC Notified By: JAMES JUDD
HQ OPS Officer: HOWIE CROUCH
Notification Date: 07/20/2004
Notification Time: 04:04 [ET]
Event Date: 07/20/2004
Event Time: 03:44 [EDT]
Last Update Date: 07/20/2004
Emergency Class: ALERT
10 CFR Section:
50.72(a) (1) (i) - EMERGENCY DECLARED
Person (Organization):
KENNETH O'BRIEN (R3)
RICHARD WESSMAN (IRO)
JAMES CALDWELL (RA)
MARK RING (R3)
PAT HILAND (R3)
STEVE REYNOLDS (R3)

Unit SCRAM Code RX CRIT Initial PWR Initial RX Mode Current PWR Current RX Mode
1 N Y 100 Power Operation 100 Power Operation

Event Text

ALERT DECLARED DUE TO HIGH OFFGAS EFFLUENT ALARM PEGGED HIGH AND UNABLE TO CONFIRM WITHIN 15 MINUTES

At 0344 hrs. EDT, the licensee declared an Alert under Emergency Action Level HA.1. The initiating event was a pegged high off gas ventilation effluent radiation monitor and inability to obtain a confirmatory sample within 15 minutes. Only the gaseous channel failed high. The particulate and iodine channels remained reading normally.

When plant chemistry technicians were able to obtain samples (an initial and back-up), they were negative with no activity greater than background detected. The plant management and operations team is currently evaluating their exit strategy for the Alert. The plant remains stable at 100% power, operating at normal operating parameters.

The NRC entered monitoring mode at 0438 hrs. in response to this event.

Notified DOC (Outlaw), DOE (Wyatt), USDA (Brzostek), EPA(NRC) (Baumgartner), and HHS (Phillips).

The NRC Resident Inspector was notified and is present in the control room.

* * * UPDATE FROM RALPH DAVIS TO JEFF ROTTON AT 0907 HRS ON 07/20/04 * * *

The licensee terminated the Alert at 0901 hrs. EDT. The basis for the termination was that samples taken at the site boundary were negative, samples taken locally at the skid indicated no activity, and the licensee determined that the radiation monitor equipment was faulted.

The NRC Resident Inspector was notified by the licensee.

The licensee notified the State of Ohio (Collins), Ashtabula County, OH, Geauga County, OH and Lake County, OH.

The NRC exited monitoring mode at 0914 hrs. EDT.

The NRC Operations Center notified DHS (Everett), FEMA (Biscoe), DOE (Smith), EPA(NRC) (Jones), USDA (Comeau), HHS (Molina), HQPAO (Brenner), DOC (Outlaw) and RIVDO (Farnholtz).

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Power Reactor Event Number: 40884
Facility: COMANCHE PEAK
Region: 4 State: TX
Unit: [ ] [2] [ ]
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: DON CERNY
HQ OPS Officer: CHAUNCEY GOULD
Notification Date: 07/20/2004
Notification Time: 18:00 [ET]
Event Date: 07/20/2004
Event Time: 15:39 [CDT]
Last Update Date: 07/20/2004
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
Person (Organization):
TOM FARNHOLTZ (R4)

Unit SCRAM Code RX CRIT Initial PWR Initial RX Mode Current PWR Current RX Mode
2 N Y 100 Power Operation 100 Power Operation

Event Text

LOSS OF EMERGENCY ASSESSMENT CAPABILITY EXCEEDING 8 HOURS

"Scheduled work activity on Plant Computer System resulted in loss of emergency assessment capability exceeding 8 hours."

The licensee informed the NRC Resident Inspector.

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Power Reactor Event Number: 40885
Facility: FT CALHOUN
Region: 4 State: NE
Unit: [1] [ ] [ ]
RX Type: [1] CE
NRC Notified By: RANDY HODGSON
HQ OPS Officer: STEVE SANDIN
Notification Date: 07/20/2004
Notification Time: 20:36 [ET]
Event Date: 07/20/2004
Event Time: 18:18 [CDT]
Last Update Date: 07/20/2004
Emergency Class: NON EMERGENCY
10 CFR Section:
OTHER UNSPEC REQMNT
Person (Organization):
TOM FARNHOLTZ (R4)

Unit SCRAM Code RX CRIT Initial PWR Initial RX Mode Current PWR Current RX Mode
1 N Y 100 Power Operation 100 Power Operation

Event Text

4-HOUR NOTIFICATION REQUIRED BY TECHNICAL SPECIFICATIONS

"At 1818 the predicted post trip voltage on the 161 KV incoming line went into alarm on the PCM MINT program. The alarm was validated using OI-EG-3 and by conversation with the system operator. The predicted voltage was 160.4 KV. AOP-31 Section 1 'grid instability' was entered. Per the AOP, at less that 160.7 KV, the incoming line and T1A3 and T1A4 are considered inoperable. Technical Specification 2.7(2)c was entered. This is a 72 hour LCO and requires a 4 hour notification to the NRC. Both diesel generators are operable.

"The system operator took actions to raise the 161 KV system voltage. At 1831, the predicted post trip voltage was 160.9 KV and the LCO was exited. The line was inoperable for 13 minutes.

"At 1834 the voltage was 161.1 KV and AOP-31 was exited."

The licensee attributes the dip in line voltage due to heavy demand. The licensee informed the NRC Resident Inspector.

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Friday, March 30, 2012