| U.S. Nuclear Regulatory Commission
Operations Center Event Reports For
11/19/2012 - 11/20/2012 ** EVENT NUMBERS ** |
 | !!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!! | | Power Reactor | Event Number: 48367 | Facility: CALVERT CLIFFS
Region: 1 State: MD
Unit: [1] [ ] [ ]
RX Type: [1] CE,[2] CE
NRC Notified By: JOSEPH GIOFFRE
HQ OPS Officer: DONG HWA PARK | Notification Date: 10/03/2012
Notification Time: 07:25 [ET]
Event Date: 10/03/2012
Event Time: 00:10 [EDT]
Last Update Date: 11/19/2012 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(ii)(B) - UNANALYZED CONDITION
| Person (Organization):
WAYNE SCHMIDT (R1DO)
|
| 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 UNANALYZED CONDITION DUE TO HIGH ENERGY LINE BREAK BARRIER BEING PARTIALLY OPEN
"At 0010 [EDT] on 10/3/12, it was determined that an unanalyzed condition existed for the switchgear rooms on Unit 1. A degraded condition of a high energy line break (HELB) barrier was created during security surveillance. A HELB barrier door for the 27' elevation switchgear room was partially opened for a 14 minute period and could have allowed steam from a HELB on the 27' elevation of the Turbine Building to potentially impact equipment in both the 27' and 45' elevation switchgear rooms because these rooms are connected by a common ventilation system. The switchgear rooms are not analyzed for a steam environment. The degree of the impact could not be readily determined, but could likely affect the safety related equipment in the switchgear rooms. At 0024 [EDT] on 10/3/12, the HELB barrier door for the 27' elevation switchgear room was closed and the barrier restored which eliminated the potential unanalyzed condition. An 8 hour report to the NRC is required under 10 CFR 50.72(b)(3)(ii)(B), 'Any event or condition that results in the nuclear power plant being in an unanalyzed condition that significantly degrades plant safety' since there was not a reasonable expectation that the switchgear room environment could support operation of safety related equipment with the 27' elevation switchgear room door partially open. Further analysis is underway."
The licensee has notified the NRC Resident Inspector.
* * * RETRACTION FROM CHARLES MORGAN TO HOWIE CROUCH AT 1241 EST ON 11/19/12 * * *
"Subsequent engineering analysis conducted for this condition demonstrated that having the roll-up door stuck open six inches would not, should a HELB occur in the vicinity of the 27' switchgear room roll-up door, result in conditions within both switchgear rooms that would challenge the design limits and which would render the Class 1E electrical busses inoperable. Therefore the unit was not in a degraded or unanalyzed condition.
"As a result this condition is not reportable under 50.72(b)(3)(ii)(B). Based on this information, Calvert Cliffs is retracting notification message EN #48367."
The licensee has notified the NRC Resident Inspector. Notified R1DO (Dwyer). |
| Agreement State | Event Number: 48498 | Rep Org: MA RADIATION CONTROL PROGRAM
Licensee: DANA-FARBER CANCER INSTITUTE
Region: 1
City: BOSTON State: MA
County:
License #: 60-0037
Agreement: Y
Docket:
NRC Notified By: BRUCE PACKARD
HQ OPS Officer: HOWIE CROUCH | Notification Date: 11/09/2012
Notification Time: 17:02 [ET]
Event Date: 11/07/2012
Event Time: [EST]
Last Update Date: 11/09/2012 | Emergency Class: NON EMERGENCY
10 CFR Section:
AGREEMENT STATE
| Person (Organization):
GLENN DENTEL (R1DO)
FSME RESOURCE (EMAI)
| Event Text AGREEMENT STATE REPORT - DOSE TO EMBRYO/FETUS
The following information was obtained from the Commonwealth of Massachusetts via facsimile:
"A lung cancer patient [underwent] PET and CT [scans and received] a calculated dose of 2 Rem to [her] embryo. The patient was asked if she was pregnant and she replied no. The dose was calculated to be 8.8 mGy from CT and 11.5 mGy from PET."
The patient was notified. |
| Power Reactor | Event Number: 48518 | Facility: SUMMER
Region: 2 State: SC
Unit: [1] [ ] [ ]
RX Type: [1] W-3-LP,[2] W-AP1000,[3] W-AP1000
NRC Notified By: MICHAEL MOORE
HQ OPS Officer: VINCE KLCO | Notification Date: 11/18/2012
Notification Time: 11:10 [ET]
Event Date: 11/18/2012
Event Time: 11:30 [EST]
Last Update Date: 11/19/2012 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
| Person (Organization):
MALCOLM WIDMANN (R2DO)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 1 | N | N | 0 | Refueling | 0 | Refueling | Event Text LOSS OF ASSESSMENT CAPABILITY DUE TO INTEGRATED PLANT COMPUTER PLANNED MAINTENANCE
"On 11/18/2012 at approximately 1130 EST, the Summer Safety Parameter Display System (SPDS) and the Emergency Response Data System (ERDS) will be taken out of service for approximately 12 hours to support a planned maintenance on an inverter that feeds the station's Integrated Plant Computer System (lPCS). During this time frame. ERDS and SPDS will be unavailable. Should the need arise, plant status information will be communicated to the NRC using other available communication systems. SPDS and ERDS are expected to be restored on 11/18/2012 at 1800 EST. This event is reportable under 10 CFR 50.72(b)(3)(xiii).
"The NRC Resident Inspector has been notified."
* * * UPDATE FROM MICHAEL MOORE TO DONALD NORWOOD AT 1003 EST ON 11/19/2012 * * *
"On November 18, 2012, at approximately 1730, IPCS was returned to service. Completing this planned maintenance activity restored the VCSNS Safety Parameter Display System and the Emergency Response Data System (ERDS). ERDS was tested this morning, November 19, 2012, by VCSNS and the NRC ERDS Help Desk to verify system operability.
"The NRC Resident Inspector has been notified."
Notified R2DO (Widmann). | |