ML18153C418
| ML18153C418 | |
| Person / Time | |
|---|---|
| Site: | Surry, North Anna  |
| Issue date: | 10/31/1990 |
| From: | Stewart W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| 90-633, GL-85-02, GL-85-2, NUDOCS 9011080123 | |
| Download: ML18153C418 (2) | |
Text
..
e e
VIRGINIA ELECTRIC AND POWER COMPANY RICHMOND, VIRGINIA 23261 October 31, 1990 United States Nuclear Regulatory Commission Attention: Document Control Desk Washington, D.C. 20555 Gentlemen:
VIRGINIA ELECTRIC AND POWER COMPANY Serial No.
NO/RFB Docket Nos.
License Nos.
SURRY AND NORTH ANNA POWER STATIONS UNITS 1 AND 2 SUPPLEMENTAL RESPONSE 90-633 50-280 50-281 50-338 50-339 DPR-32 DPR-37 NPF-4 NPF-7 GENERIC LETTER 85-02, CONDENSER INSPECTION PROGRAM Generic Letter 85-02 provided recommended actions to address steam generator integrity issues.
Our response, dated June 17, 1985, included a commitment to develop a periodic inspection program for condenser tubes that was in excess of the requirements of the Generic Letter. This program included eddy current examination of a selected number of condenser tubes during each refueling outage based on historical records of condenser performance.
In light of improved condenser performance since our original response, performing condenser inspections every refueling outage, regardless of condenser performance, is no longer warranted. Consequently, we intend to perform condenser inspections only when leakage is of concern. Condenser leakage can be detected with the use of the on-line chemistry monitoring system. This system can analyze various chemistry parameters that indicate condenser leakage. Administrative controls are established so that corrective action can be taken based on the severity of the leakage. Corrective action may include removing a waterbox from operation, reducing power or plant shutdown. At a minimum, condenser inspections would be performed if leakage is of such magnitude that a power reduction corrective action is required more than once per three month period. This position is consistent with the Generic Letter.
- -::**-=: 9() 1 o:::: 1 r
YU11UuU1~~ ~~~)nO~RO I
[ I*.
Af.11 II I.*
(). 11-F'. 1-,
1-
- _.r-..
PDC I]
f/00/
I I CJ
I e
If you have any questions regarding this modification of our commitment to Generic Letter 85-02, please contact us.
Very truly yours,
~~
W. L. Stewart Senior Vice President - Nuclear cc:
U.S. Nuclear Regulatory Commission Region II 101 Marietta Street, N.W.
Suite 2900 Atlanta, Georgia 30323 Mr. W. E. Holland NRC Senior Resident Inspector Surry Power Station Mr. M. S. Lesser NRC Senior Resident Inspector North Anna Power Station