ML18153C674
| ML18153C674 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 07/08/1991 |
| From: | Stewart W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| 91-014A, 91-14A, IEB-88-004, IEB-88-4, NUDOCS 9107190128 | |
| Download: ML18153C674 (3) | |
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VIRGINIA ELECTRIC AND POWER COMPANY RICHMOND, VIRGINIA 23261 July 8, l99l United States Nuclear Regulatory Commission Attention: Document Control Desk Washington, D. C. 20555 Gentlemen:
VIRGINIA ELECTRIC AND POWER COMPANY SURRY POWER STATION UNITS 1 AND 2 Serial No.
NURCS/ets Docket No.
License No.
91-014A 50-280 50-281 DPR-32 DPR-37 NRC BULLETIN 88-04. POTENTIAL SAFETY RELATED PUMP LOSS COMPLETED ACTIONS In accordance with NRC Bulletin 88-04, this letter provides notification of the completion of the long term corrective action for safety-related pumps for Unit 2. With the completion of Unit *2 long term corrective actions, corrective actions have been completed for both Unit 1 and Unit 2. A summary of the completed corrective actions is provided in the Attachment to this letter.
Should you have any further questions, please contact us.
Very truly yours, l f': l. G/J___t
\\/1. ) \\._y_AA,()-;J W. L. Stewart Senior Vice President - Nuclear Attachment cc:
U. S. Nuclear Regulatory Commission Region II 101 Marietta Street, N. W.
Suite 2900 Atlanta, Georgia 30323 Mr. M. W. Branch NRC Senior Resident Inspector Surry Power Station
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ATTACHMENT CORRECTIVE ACTIONS FOR NRC BULLETIN 88-04 POTENTIAL SAFETY RELATED PUMP LOSS I.
Corrective Actions Originally Proposed Status -
No corrective actions necessary. Engineering will initiate a study to evaluate enhancements of cooldown and possible heatup operation which may reduce pump maintenance requirements.
COMPLETE II.
LOW HEAD SAFETY INJECTION (LHSI)
Corrective Actions Originally Proposed Status -
Small break LOCA scenarios will be conducted by November 1, 1988 on the simulator to verify the EOPs adequately address and therefore minimize operation of the LHSI pumps.
COMPLETE Ill. HIGH HEAD SAFETY INJECTION (HHSI)
Corrective Actions No corrective actions are deemed necessary.
Originally Proposed Status -
COMPLETE IV. AUXILIARY FEED WATER (AFW)
Corrective Actions Short Term Originally Proposed Status -
Status -
- a. Appropriate procedures will be reviewed and revised, as necessary, by November 1, 1988 to minimize operation at low flow/minimum flow recirculation.
COMPLETE
- b. Operation/Engineering personnel will be directed to limit use of these pumps in leak testing.
COMPLETE
j IV. AUXILIARY FEED WATER (continued)
Corrective Actions Long Term Originally Proposed
- a. One auxiliary feedwater pump will be disassembled and inspected for degradation during the 1990 and 1991 refueling outage for each unit. The remaining pumps will be inspected during subsequent outages.
Inspection results will determine the required future inspection frequency and number of pumps inspected.
Status - COMPLETE.
Auxiliary feedwater pumps 1-FW-P-3A and 2-FW-P-2 were disassembled and inspected for degradation during the 1990 and 1991 refueling outages, respectively. The inspection results were evaluated and it was conservatively estimated that at least six years of remaining pump life exist for both Unit 1 and Unit 2 pumps under.historical operating conditions.
Addition of the 100% full flow test lines described below will improve testing conditions and should prolong pump life.
- b.
- Larger minimum flow recirculation lines are scheduled to be installed in the 1990 and 1991 refueling outages for Units 1 and 2, respectively.
Status - COMPLETE.
100% full flow test lines were installed in Unit 1 and Unit 2 during the refueling outages which completed December 20, 1990 and June 7, 1991, respectively.