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Event Notification Report for March 29, 2011

U.S. Nuclear Regulatory Commission
Operations Center

Event Reports For
03/28/2011 - 03/29/2011

** EVENT NUMBERS **


46702 46704

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Power Reactor Event Number: 46702
Facility: SEABROOK
Region: 1 State: NH
Unit: [1] [ ] [ ]
RX Type: [1] W-4-LP
NRC Notified By: JEFF MCNALLY
HQ OPS Officer: JOHN SHOEMAKER
Notification Date: 03/28/2011
Notification Time: 12:38 [ET]
Event Date: 03/28/2011
Event Time: 11:43 [EDT]
Last Update Date: 03/28/2011
Emergency Class: UNUSUAL EVENT
10 CFR Section:
50.72(a) (1) (i) - EMERGENCY DECLARED
Person (Organization):
RAY POWELL (R1DO)
SCOTT MORRIS (IRD)
MIKE CHEOK (NRR)
ERIC LEEDS (NRR)
DAVID LEW (R1)
DENNIS VIN (FEMA)
ROD BRADSHAW (DHS)

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

UNUSUAL EVENT DECLARED DUE TO SMOKE COMING FROM AN ELEVATOR CONTROL CABINET

At 1129 EDT on 03/28/11, smoke was detected coming from an elevator power supply transformer in the "B" Residual Heat Removal (RHR) vault. The licensee declared a Unusual Event at 1143 EDT. At 1146 EDT the fire brigade responded and found smoke only and no flame. The smoke stopped when the cabinet was de-energized. At 1158 EDT, the fire was proven to be out when the cabinet was opened. No fire fighting extinguishing agents were used. There was no damage to other plant equipment and no personnel injuries. At 1151 EDT, the licensee notified the States of New Hampshire and Massachusetts and at 1209 EDT, activated their Technical Support Center (TSC). The plant was operating at 100% power and remained stable during and after the event.

The licensee notified the NRC Resident Inspector.

* * * UPDATE FROM JEFF MCNALLY TO JOHN SHOEMAKER AT 1341 EDT ON 03/28/11 * * *

"At 1243 EDT on 03/28/11, the Unusual Event was terminated. Subsequent investigation has revealed that no plant equipment damage beyond a power transformer that supplies an equipment elevator occurred. There was no indication of [visible] flame (smoke only) and no personnel injuries as a result of the event."

The licensee notified the NRC Resident Inspector.

Notified R1DO (Powell), NRR EO (Cheok), IRD (Morris).

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Power Reactor Event Number: 46704
Facility: NINE MILE POINT
Region: 1 State: NY
Unit: [1] [ ] [ ]
RX Type: [1] GE-2,[2] GE-5
NRC Notified By: BETHANY HINCKLEY
HQ OPS Officer: JOE O'HARA
Notification Date: 03/29/2011
Notification Time: 02:48 [ET]
Event Date: 03/29/2011
Event Time: 01:55 [EDT]
Last Update Date: 03/29/2011
Emergency Class: UNUSUAL EVENT
10 CFR Section:
50.72(a) (1) (i) - EMERGENCY DECLARED
Person (Organization):
RAY POWELL (R1DO)
WILLIAM DEAN (RA)
JACK GROBE (NRR)
SCOTT MORRIS (IRD)
MIKE CHEOK (NRR)
HILL (DHS)
BARDEN (FEMA)

Unit SCRAM Code RX CRIT Initial PWR Initial RX Mode Current PWR Current RX Mode
1 N N 0 Refueling 0 Refueling

Event Text

ELECTRICAL FIRE IN THE DRYWELL ON A PIECE OF LIFTING EQUIPMENT

"At approximately 0145 EDT, the Unit 1 control room was notified of elevated carbon monoxide (CO) levels in the Unit 1 Drywell. The cause of the elevated CO was a small fire on a 'Lift-A-Loft'. The fire was immediately extinguished followed by an evacuation of all personnel from the Drywell.

"Follow up atmosphere samples indicated carbon monoxide levels above the OSHA Threshold of 50 PPM. Readings were as high as 79 PPM and have been slowly lowering since the initial response. These values are considered to affect the health of plant personnel or safe plant operation and an Unusual Event was declared at 0155 EDT.

"As of 0225 EDT, all values within the Unit 1 Drywell have been confirmed to be below the 50 PPM threshold.

"As of 0226 EDT, the Unusual Event has been terminated."

There were no injuries, no offsite assistance required, and the NRC Senior Resident Inspector responded to the site.

The licensee notified the NRC Senior Resident Inspector, the State Emergency Communication Center, and the Oswego County Warning Point. No press release is planned.

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Thursday, March 29, 2012