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Event Notification Report for February 4, 2005

U.S. Nuclear Regulatory Commission
Operations Center

Event Reports For
02/03/2005 - 02/04/2005

** EVENT NUMBERS **


41364 41368 41369 41370

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General Information or Other Event Number: 41364
Rep Org: FLORIDA BUREAU OF RADIATION CONTROL
Licensee:
Region: 1
City: MIAMI State: FL
County:
License #:
Agreement: Y
Docket:
NRC Notified By: STEVE FURNACE
HQ OPS Officer: CHAUNCEY GOULD
Notification Date: 02/01/2005
Notification Time: 17:57 [ET]
Event Date: 02/01/2005
Event Time: 17:00 [EST]
Last Update Date: 02/01/2005
Emergency Class: NON EMERGENCY
10 CFR Section:
AGREEMENT STATE
Person (Organization):
TODD JACKSON (R1)
M. WAYNE HODGES (NMSS)
CREWS (NRC)

Event Text

AGREEMENT STATE REPORT - NONLICENSED RADIOGRAPHY CAMERA CONFISCATED BY US CUSTOMS IN FLORIDA

A private plane landed at the Tamiami airport in Miami, FL and US Customs discovered a Model 802 radiography camera with an Iridium 192 source measuring approximately 11 curies aboard. The camera belonged to a Guatemala company by the name of S.I.E. Limitada located in Guatemala City. The company was doing work in the Grand Cayman Islands for a Florida company by the name of Tampa Tank. The contract company was returning from the Grand Cayman Islands to Guatemala via Miami. US Customs has confiscated the camera and has it under their control until the State can get their people in place to take control of the device. As soon as a State representative can transport the camera to the Miami Airport it will be flown back to Guatemala City via Arrow transport.

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Power Reactor Event Number: 41368
Facility: SAN ONOFRE
Region: 4 State: CA
Unit: [ ] [2] [ ]
RX Type: [1] W-3-LP,[2] CE,[3] CE
NRC Notified By: CLAY WILLIAMS
HQ OPS Officer: MIKE RIPLEY
Notification Date: 02/03/2005
Notification Time: 18:02 [ET]
Event Date: 02/03/2005
Event Time: 12:27 [PST]
Last Update Date: 02/03/2005
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(iv)(B) - RPS ACTUATION - CRITICAL
50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION
Person (Organization):
GARY SANBORN (R4)

Unit SCRAM Code RX CRIT Initial PWR Initial RX Mode Current PWR Current RX Mode
2 A/R Y 100 Power Operation 0 Hot Standby

Event Text

AUTOMATIC REACTOR TRIP DUE TO UNIT AUXILIARY TRANSFORMER TRIP

"On February 3, 2005, at about 1227 PST, SONGS Unit 2 tripped from about 100 percent power. Preliminary information indicates that the Unit 2 Unit Auxiliary Transformer tripped on high differential current, which caused the main generator to trip and caused the Reactor Protection System to automatically trip the reactor, as expected. Auxiliary Feedwater system actuated as designed and the Unit remains stable in Mode 3 on Main Feedwater. SCE's investigation is ongoing.

"SCE is reporting this occurrence in accordance with 10CFR50.72(b)(2)(iv)(B) and 10CFR50.72(b)(3)(iv).

"At the time of this event, SONGS Unit 3 was at about 100 percent power. The NRC resident inspectors are aware of this event and SCE will provide them with a copy of this report."

All control rods fully inserted. Decay heat is being rejected to the main condenser. All ESF systems are available and the electrical grid is stable.

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Power Reactor Event Number: 41369
Facility: QUAD CITIES
Region: 3 State: IL
Unit: [1] [2] [ ]
RX Type: [1] GE-3,[2] GE-3
NRC Notified By: TERRY GALLENTINE
HQ OPS Officer: BILL HUFFMAN
Notification Date: 02/03/2005
Notification Time: 23:48 [ET]
Event Date: 02/03/2005
Event Time: 18:19 [CST]
Last Update Date: 02/04/2005
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(ii)(B) - UNANALYZED CONDITION
50.72(b)(3)(v)(B) - POT RHR INOP
Person (Organization):
BRUCE BURGESS (R3)

Unit SCRAM Code RX CRIT Initial PWR Initial RX Mode Current PWR Current RX Mode
1 N Y 85 Power Operation 85 Power Operation
2 N Y 85 Power Operation 85 Power Operation

Event Text

4160 VOLT RELAYING AND METERING SINGLE FAILURE VULNERABILITY

The licensee provided the following report via facsimile:

"On February 3, 2005 at 1819 hours, Quad Cities Nuclear Power Station (QCNPS) confirmed a vulnerability with a 4160 VAC relaying and metering current transformer (CT) associated with the Unit and Reserve Auxiliary Transformers (i.e., the UAT and RAT) on both Unit 1 and Unit 2. Although the CT is currently fully operable, failure of the CT circuitry could cause the neutral overcurrent relay to trip and lockout the circuit breakers supplying feeds to safety related buses 13 (23) and 14 (24), isolating them from their normal and emergency power sources. Emergency power (i.e., the emergency diesel generator) would still be available to supply power to safety related buses 13-1 (23-1) and 14-1 (24-1), but the Residual Heat Removal Service Water (RHRSW) system may be without a source of power. If this failure occurred during a LOCA, then the RHRSW pumps may not be started within the ten minute requirement. A modification is in progress to eliminate this vulnerability. This event is being reported as a potential loss of safety function (10CFR50.72(b)(3)(v)(B)) and as a degraded or unanalyzed condition (10CFR50.72(b)(3)(ii)(B))."

The NRC Resident Inspector has been notified.

See similar events #41362 (Crystal River), #41366 (LaSalle), and #41370 (Dresden).

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Power Reactor Event Number: 41370
Facility: DRESDEN
Region: 3 State: IL
Unit: [ ] [2] [3]
RX Type: [1] GE-1,[2] GE-3,[3] GE-3
NRC Notified By: PAUL SALGADO
HQ OPS Officer: BILL HUFFMAN
Notification Date: 02/04/2005
Notification Time: 00:23 [ET]
Event Date: 02/03/2005
Event Time: 19:15 [CST]
Last Update Date: 02/04/2005
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(ii)(B) - UNANALYZED CONDITION
50.72(b)(3)(v)(B) - POT RHR INOP
Person (Organization):
BRUCE BURGESS (R3)

Unit SCRAM Code RX CRIT Initial PWR Initial RX Mode Current PWR Current RX Mode
2 N Y 95 Power Operation 95 Power Operation
3 N Y 96 Power Operation 96 Power Operation

Event Text

4160 VOLT RELAYING AND METERING SINGLE FAILURE VULNERABILITY

The licensee provided the following report via facsimile:

"On February 3, 2005 at 1915 hours, DNPS confirmed a vulnerability with a 4160 VAC relaying and metering current transformer (CT) associated with the Unit and Reserve Auxiliary Transformers (i.e., the UAT and RAT) on both Units. Although the CT is currently fully operable, failure of the CT circuitry will cause the neutral overcurrent relay to trip (and lockout) the main, reserve and tie feed breakers. These combined protective relay trips will act to trip and lock out the circuit breakers supplying feeds to buses 23 (33) and 24 (34), essentially isolating them from their normal and emergency power sources. Emergency power (i.e., the emergency diesel generator) would still be available to safety related buses 23-1 (33-1) and 24-1 (34-1), but the Containment Cooling Service Water (CCSW) system would remain without a power source. If this failure occurred during a LOCA, then the CCSW pumps may not be able to be started within ten minutes. A modification is in progress to eliminate this vulnerability. This event is being reported as a potential loss of safety function (10CFR50.72(b)(3)(v)(B)) and a degraded or unanalyzed condition (10CFR50.72(b)(3)(ii)(B))."

The NRC Resident Inspector has been notified.

See similar events #41362 (Crystal River), #41366 (LaSalle), and #41369 (Quad Cities).

Page Last Reviewed/Updated Friday, March 30, 2012
Friday, March 30, 2012