ML20247F092
| ML20247F092 | |
| Person / Time | |
|---|---|
| Site: | Wolf Creek, Callaway, 05000000 |
| Issue date: | 03/23/1989 |
| From: | Schnell D UNION ELECTRIC CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML20247F099 | List: |
| References | |
| ULNRC-1950, NUDOCS 8904030310 | |
| Download: ML20247F092 (5) | |
Text
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I 190l Watiot Street
~N Post Ottice Box 149 W
'St Louis.MissouriS3166 314 554 2650 Union"*'c" "' ****
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33 U.
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Nuclear. Regulatory Commission ATTN:
Document Control Desk Mail Stop P1-137 Washington, D.C.
20555 ULNRC-1950 Gentlemen:
DOCKET NUMBER 50-483 CALLAWAY PLANT REVISION TO TECHNICAL SPECIFICATION 3/4.6.1.6 CONTAINMENT VESSEL STRUCTURAL INTEGRITY
References:
- 1) ULNRC-1173 dated September 18, 1985
- 2) NRC Letter dated May 16, 1988 Reference 1 transmitted an amendment request to revise Technical Specification 3/4.6.1.6, which concerns contain-ment vessel structural integrity.
On March 16, 1988, Union Electric and Wolf Creek Nuclear Operating Corporation representatives meet with the Staff to discuss the amendment request.
Based on that meeting, the requested change has been revised as shown on the attached marked-up Technical Specification pages.
The changes to the original request include:
1)
Proposed Action 3.6.1.6.c will include a 30 day preliminary Special R oort as well as a 90 day Special Report.
2)
Surveillance 4.6.1.6.1.d, which addresses tendon lift-off stress, will be tied to Action 3.6.1.6.a, which addresses tendon lift-off force.
3)
Surveillance 4.6.1.6.1.e is revised to include the 5%
grease void criteria, visual inspection of the containment to assure no widespread grease leakage, and considerations for determining the maximum grease pumping pressure.
Reference 2 transmitted a request for additional information to support the 15 day allowed outage time in proposed Action 3.6.1.6.a. to this letter provides an evaluation which concludes that the rate of h00!
change in prestressing levels is extremely slow, such that f $D$C0 $E888f I
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if occasional low lift-off readings are encountered an immediate reduction in the prestressing system capacity is not expected.
Therefore, the 15 day period to restore the lift-off stress to within limits is reasonable.
With these changes, the conclusions of the Safety Evaluation.and Significant Hazard Evaluation tiensmitted by Reference 1 remain valid.
If you have any additional questions in'this matter, please contact us.
Very truly yours,
(
Donald F. Schnell DS/ dis Attachments:
1)
Marked-up Technical Specification Pages 2)
Post Tensioning System Evaluation l
9 STATE OF MISSOURI )
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i Donald F.
Schnell, of lawful age, being first duly sworn upon oath says that he is Senior 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.
By Donald F.
Schnell Senior Vice President Nuclear SUBSCRIBED and sworn to before me this c2342 day of
,198f.
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bAnuaaA J. PFAFF NGa ARY PUBUC, STATE OF MISSOURI MY C0YMISSION EXPIRES APRIL 22, 1989 ST. LOUIS COUNTY.
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cc:
Gerald Charnoff, Esq.
I Shaw, Pittman, Potts & Trowbridge 2300 N. Street, N.W.
Washington, D.C.
20037 Dr.
J. O. Cermak CFA, Inc.
4 Professional Drive (Suite 110)
Gaithersburg, MD 20879 R.
C.
Knop Chief, Reactor Project Branch 1 U.S.
Nuclear Regulatory Commission Region III 799 Roosevelt Road Glen Ellyn, Illinois 60137 Bruce Little Callaway Resident Office U.S. Nuclear Regulatory Commission RR#1 Steedman, Missouri 65077 Tom Alexion (2)
Office 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 U.S.
Nuclear Regulatory Commission ATTN:
Document Control Desk Washington, D.C.
20555 Ron Kucera Department of Natural Resources P.O. Box 176 Je f fersor. City, MO 65102
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D. Shafer/A160.761
/QA Record (CA-758)
Nuclear Date E210.01 DFS/ Chrono D.
F.
Schnell J.
E.
Birk J. V.
Laux M. A.
Stiller G.
L. Randolph R.
J.
Irwin H. Wuertenbaecher W.
R. Campbell A. C.
Passwater R.
P. Wendling D.
E. Shafer D.
J. Walker O. Maynard (WCNOC)
N. P. Goel (Bechtel)
T.
P. Sharkey NSRB (Sandra Auston) l t
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