ML20140C012
| ML20140C012 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 03/18/1986 |
| From: | Schnell D UNION ELECTRIC CO. |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| References | |
| ULNRC-1276, NUDOCS 8603250077 | |
| Download: ML20140C012 (3) | |
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1901 Gratet Street. St. Louis Donald F. Schnell Vi Prudent March 18, 1986 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, D. C.
20555 ULNRC-1276
Dear Mr. Denton:
DOCKET NUMBER 50-483 CALLAWAY PLANT TESTING OF NORMALLY CLOSED CHECK VALVES
Reference:
- 2) Memo from H. L. Thompson, Jr., Director, Division of Licensing, NRR to R. L. Spessard,
~
Director, Division of Reactor Safety, Region III dated April 18, 1985 The referenced NRC Inspection Report identified an unresolved issue involving closure testing of normally closed check valves that perform a safety function in the closed position.
This issue was first identified by an NRC Region III Inspector in September 1983.
After discussion with Union Electric, Region III referred this issue to the Office of Nuclear Reactor Regulation (NRR) for the determination of the NRC staff position.
The NRR position, as documented in Reference 2 is that normally closed check valves, that have a safety function in the closed position, should have the closure function verified periodically throughout plant life.
Union Electric agrees that testing of such valves is appropriate.
Other than conturament isolation valves or pressure isolation valves (which are tested under other requirements),
normally closed check valves that perform a safety function in the closed position are tested periodically throughout the plant life as part of the Planned Maintenance Test Program.
This testing will verify the closure capability of the check valves.
The Planned Maintenance Test Program is available onsite for your inspection.
This position adequately addresses the concerns of the unresolved issue and therefore, Union Electric considers this issue closed.
If you have any questions or comments, please contact us.
Very truly yours, 86032500
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PDR Donald F. Schnell 00
- al g WEK/bjk Mahng Address: P.O. Box 149. St. Louis, MO 63166
.l STATE OF MISSOURI )
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Donald F. Schnell, of lawful age, being first duly sworn upon oath says that he is Vice President-Nuclear and an officer of Union Electric Company; that he has read the foregoing document and' knows the content thereof; that he has executed the same for and on behalf of said company with full power'and authority to do so; and that the facts therein stated are true and correct-to the best of his knowledge, information and belief.
O By Donald F. Schnell Vice President Nuclear SUBSCRIBED and sworn to before me this. /f day of 198b.
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.FFAF [ O y BARBAR NOTARY PUBLIC, STATE OF WISSOURI MY COMMISSION EXPlRES APRIL 22,1983 l
ST. LOU.tS COUNTY i
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Gerald Charnoff,-Esq.
~ Shaw,- Pittman, Potts' & Trowbridge.
- 1800 M.-Street, N.W..
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Washington, D.C.
20036 Nicholas A.
Pe t r i c k.
s Executive Director SNUPPS.
5 Choke Cherry Road-Rockville, Maryland.20850 C. W. Hehl:
Division of Projects and ~
Resident Programs, Chief, Section lA U.S. Nuclear-Regulatory Commission.
Region:III 799 Roosevelt Road Glen Ellyn,. Illinois 60137 Bruce Little Callaway Resident Office
- U.S.. Nuclear Regulatory. Commission RRil Steedman, Missouri' 65077 Paul O'Connor Of fice. of Nuclear Reactor Regulation U.S.
Nuclear Regulatory Commission Mail Stop 316 7920-Norfolk Avenue Bethesda, MD 20014 Manager, Electric Department Missouri, Public Service Commission P.O.
Box 360 Jefferson City, MO 65102 P
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