| U.S. Nuclear Regulatory Commission
Operations Center Event Reports For
11/09/2007 - 11/12/2007 ** EVENT NUMBERS ** |
 | General Information or Other | Event Number: 43776 | Rep Org: CONVAL INC
Licensee: CONVAL INC
Region: 1
City: SOMERS State: CT
County:
License #:
Agreement: N
Docket:
NRC Notified By: DONALD CURTIN
HQ OPS Officer: MARK ABRAMOVITZ | Notification Date: 11/09/2007
Notification Time: 15:30 [ET]
Event Date: 11/09/2007
Event Time: [EST]
Last Update Date: 11/09/2007 | Emergency Class: NON EMERGENCY
10 CFR Section:
21.21 - UNSPECIFIED PARAGRAPH
| Person (Organization):
MARIE MILLER (R1)
MARK LESSER (R2)
MONTE PHILLIPS (R3)
BLAIR SPITZBERG (R4)
VERN HODGE (EMAIL) (NRR)
JOHN THORP (EMAIL) ()
| Event Text PART 21 NOTIFICATION - CONVAL VALVES WELD QUALIFICATIONS
The manufacturer provided the following information via facsimile:
"This letter serves to notify the Commission of two (2) potential safety-related, non-compliances as defined in 10CFR-Part 21. These non-compliances involve Electron Beam (EB) weld qualifications for welds performed on pressure boundary and safety related components of Conval valves; and Electron Beam (EB) welding of cobalt alloy types 6 and 21 to pressure boundary parts of Conval valves.
"Possibly as high as 2,000 forged-body, globe valves generally for use on high temperature steam and hot water in sizes ranging from, 1/2" to 4", possibly involving one or more of these non-compliances, have been supplied by Conval to approximately 25 nuclear power plants over an estimated time period extending from the 1980's to the present. Probably over half of the valves suspected of nonconformances were procured as Commercial Grade valves."
Potentially affected plants are:
Region 1: Fitzpatrick, Indian Point, Pilgrim, Vermont Yankee, Nine Mile Point
Region 2: North Anna, Surry, Oconee, Brunswick, Crystal River, Harris
Region 3: Cook, Palisades, Quad Cities, Point Beach
Region 4: Arkansas Nuclear One, Fort Calhoun, Palo Verde, Grand Gulf, Waterford, Cooper, South Texas
Foreign Plants: Laguna Verde (Mexico), Keoberg (South Africa) |
| Power Reactor | Event Number: 43779 | Facility: HOPE CREEK
Region: 1 State: NJ
Unit: [1] [ ] [ ]
RX Type: [1] GE-4
NRC Notified By: BERNARD LITKETT
HQ OPS Officer: JEFF ROTTON | Notification Date: 11/11/2007
Notification Time: 20:06 [ET]
Event Date: 11/11/2007
Event Time: 16:39 [EST]
Last Update Date: 11/11/2007 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(v)(D) - ACCIDENT MITIGATION
| Person (Organization):
MARIE MILLER (R1)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 1 | N | Y | 8 | Startup | 8 | Startup | Event Text HPCI INOPERABLE DUE TO VALVE FAILURE DURING QUARTERLY SURVEILLANCE
"On 11/11/07 at 1639, the High Pressure Coolant Injection (HPCI) system was declared inoperable. The quarterly HPCI System Valve In-Service Surveillance was in progress. During the performance of the surveillance, the Suppression Chamber supply check valve was unable to be cycled open in accordance with the surveillance procedure.
"Loss of the HPCI system is reportable under 10CFR50.72(b)(3)(v) as loss of a single train safety system required to mitigate the consequences of an accident. The plant is stable in Operational Condition 2, no other Emergency Core Cooling or Safety Related systems are inoperable and plant start-up activities are in progress."
The licensee notified the NRC Resident Inspector and the Lower Alloways Creek Township. | |