ML20114A747
| ML20114A747 | |
| Person / Time | |
|---|---|
| Site: | Oyster Creek |
| Issue date: | 08/13/1992 |
| From: | J. J. Barton GENERAL PUBLIC UTILITIES CORP. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| C321-92-2235, NUDOCS 9208210018 | |
| Download: ML20114A747 (3) | |
Text
- _ _ _ _ - _ _ _ _ _ _ - _ _ _ _ _ _
ia GPU Nuclear Corporation G U MuClear-
=1o"go r 388 e
Forkod River, New Jersey 08731-0388 609 971 4000 Writer's Direct Dial Number; C321-92-2235 August 13, 1992 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555
Dear Sir:
In accordance with 10 CFR 2.201, the enclosed provides GPU Nuclear's response to the Notice of Violation identified in NRC's Inspection Report 50-219/92-80.
If you should have any questions or require further information, please contact Thomas Blount, OC Licensing Engineer at (609) 971-4007 or Mr. Dave Jerko at (201)316-7976.
ery t ulyg ours,,
/
lJh ohn J.
ten i ent & Director Vice Pr d
Oyner Creek JJB/TB:jc cc:
Administrator, Region 1 Senior NRC Resident Inspector Oyster Creek NRC Project Manager
-200099-9208210018 920813
){i ADOCKOSOOg9 DR GPU Nsclear Corporaton is e subs;dwy of Generte Puthc Ut ' tes Comwation v
Attachment C321-92-2235 Paae 1 of 2 RESPONSE TO NOTICE OF VIOLATION Inspection ReDort 50.219/92-80 Violation:
10CfR50 Appendix B, Criterion XI, requires in part that a test program shall be estab112ed to assure that all testing required to demonstrate that components will perform satisfactorily in service is identified and performed in accordance with written procedures.
Contrary to the above, on June 5,1992 no test programs were established for functional tests of battery main breakers, static battery chargers, rotary battery chargers and inverters to assure that they will perform satisfactorily in service.
Also, no written test procedures were developed to test these safety-related components.
This is a Sever h.y level IV Violation (Supplement I).
RESPONSE
GPUN concurs with the violation.
No test program was established to test the main battery breakers.
GPUN will develop' Preventive Maintenance (PM) tasks to test all main battery breakers.
The A/B _ rotary battery chargers are continuously in service and maintain a float charge - on the batteries.
They are inspected monthly via the Preventive Maintenance Program. When brush replacement or other maintenance is required the static charger is placed in operation and maintains the float charge on the batteries.
The "C" battery float charge is maintained by the in service static charger and backed up by the standby static charger.
The back up and standby chargers are alternated each refueling outage.
The rotary inverter supplying continuous instrument panel #3 (CIP-3) consists of independent motors AC or DC driving a common generator. Current PMs perform trip tests of the AC breaker and inspect the motors and generator for signs of sparking, overheating and excessive vibration.
In addition, if the rotary inverter generator. were to fail, the supply to CIP-3 would transfer to a redundant vital bus (lA1) via an auto transfer switch.
In servir.e battery chargers and inverters are routinely monitored to detect degraded or impending failures.
J
r Attachment C321-92-2235 Page 2 of 2 GPUN recognizes that the above information does not constitute a test procedure
- or test program. It does, however, indicate the components have been monitored and maintained.
Based on this assessment, the safety significance of not having written test procedures or a test program for these components is considered minimal.
The Reason for the Violation The reason for this violation is the lack of a formal review of the plant equipment to define all the preventive maintenance and operability testing required.
This has been recognized by GPUN and discussed with the NRC.
Significant efforts are underway to perform such a review and implement any i
required actions.
The following equipment is specifically identified in this violation:
Battery Main Breakers Static Battery Chargers Rotary Battery Chargers Inverters The Corrective SteDs That Have Been Taken and the Results Achieved i
Pit requests have been issued to implement vendor and engineering recommendations to test the Battery Main _ Breakers.
The current PM for the Rotary Inverter AC circuit breaker has been revised to tra,sfer to the DC motor. This revision will functionally test the standby DC motor. In addition, engineering tasks have been assigned to develop detailed test procedures for the Inverters, Static Battery Chargers and Rotary Battery Chargers.
The Corrective Steps Which Will Be Taken to Avoid Future Violations
- A-Component Maintenance Team will perform a detailed review to determine the maintenance: requirements of the equipment identified above.
Preventive-maintenance will be developed, to ensure this equipment is properly maintained.
The Component Maintenance Team concept was initiated in August 1991.
The component maintenance team will specify PM requirer.ents for other critical components in addition to the components identified in this violation.
l The Date When Full Comoliance Will Be Achieved Prcventive maintenance including testing of the Main Battery Breakers (3) and a surveillance test pr =cedure for the inverters will be developed and implemented
.during the up-coming 14R refueling outage.
Preventive maintenance and operability testing will be performed on the rotary and static chargers during the 14R refueling outage.
Based on the results of this maintenance and testing, formal PM's and test procedures will be developed L
and ready ~ for implementation prior to the 15R refueling outage.
Based on the above full compliance will be achieved at the completion of 15R refueling outage.
.