Event Notification Report for February 17, 2013
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
02/16/2013 - 02/17/2013
EVENT NUMBERS
48763
Power Reactor
Event Number: 48763
Facility: CALVERT CLIFFS
Region: 1 State: MD
Unit: [] [2] []
RX Type: [1] CE,[2] CE
NRC Notified By: JAMES GROOM
HQ OPS Officer: HOWIE CROUCH
Region: 1 State: MD
Unit: [] [2] []
RX Type: [1] CE,[2] CE
NRC Notified By: JAMES GROOM
HQ OPS Officer: HOWIE CROUCH
Notification Date: 02/17/2013
Notification Time: 15:51 [ET]
Event Date: 02/17/2013
Event Time: 13:45 [EST]
Last Update Date: 02/17/2013
Notification Time: 15:51 [ET]
Event Date: 02/17/2013
Event Time: 13:45 [EST]
Last Update Date: 02/17/2013
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(i) - PLANT S/D REQD BY TS 50.72(b)(3)(ii)(A) - DEGRADED CONDITION
10 CFR Section:
50.72(b)(2)(i) - PLANT S/D REQD BY TS 50.72(b)(3)(ii)(A) - DEGRADED CONDITION
Person (Organization):
ANTHONY DIMITRIADIS (R1DO)
ANTHONY DIMITRIADIS (R1DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | N | N | 0 | Hot Standby | 0 | Hot Standby |
PRESSURE BOUNDARY LEAKAGE DISCOVERED DURING CONTAINMENT WALKDOWN
"CCNPP [Calvert Cliffs Nuclear Power Plant] U-2 discovered during the Mode 3 NOP/NOT containment walkdown that 2CV-100F Pressurizer Spray valve had a pin hole leak on the leak-off welded cap. This indicates that the bellows has a leak and in addition, the packing is leaking, pressurizing the leak-off line thus the leak-off line is the pressure boundary making this pressure boundary leakage. Technical Specification 3.4.13 [Action B] requires the unit be in mode 3 in 6 hrs. Unit was in mode 3 when discovered and unit will be placed in mode 5 within 36 hrs. Currently, the plant is at 400 degrees and 950 PSIA."
The licensee has notified the NRC Resident Inspector.
"CCNPP [Calvert Cliffs Nuclear Power Plant] U-2 discovered during the Mode 3 NOP/NOT containment walkdown that 2CV-100F Pressurizer Spray valve had a pin hole leak on the leak-off welded cap. This indicates that the bellows has a leak and in addition, the packing is leaking, pressurizing the leak-off line thus the leak-off line is the pressure boundary making this pressure boundary leakage. Technical Specification 3.4.13 [Action B] requires the unit be in mode 3 in 6 hrs. Unit was in mode 3 when discovered and unit will be placed in mode 5 within 36 hrs. Currently, the plant is at 400 degrees and 950 PSIA."
The licensee has notified the NRC Resident Inspector.