ML20012A414
| ML20012A414 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 02/23/1990 |
| From: | Schnell D UNION ELECTRIC CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| ULNRC-2161, NUDOCS 9003090492 | |
| Download: ML20012A414 (3) | |
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' I901 Gratiot Sticet u4 lbst Office Ban 149 '
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- St. Louis. htssoun 63166 r
i 314 b542E50 February-23, 1990-Donald r. schnell
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.g U..S. Nuclear Regulatory Commission k
ATTN:
Document Control Desk.
Mail Station P1-137
-Washington D.C.
20555 ULNRC-2161 n
. Gentlemen:
CALLAWAY PLANT DOCKET NO. 50-483 INTERPRETATION TO LEAVE LEAK CHASES PLUGGED DURING AN INTEGRATED
-LEAK RATE TEST (ILRT)
References:
- 1) ULNRC-1542, dated July 10, 1987
- 2) T.-W. Alexion letter to D. F. Schnell, dated March 30, 1988
- 3) ULNRC-1945, dated March 20, 1989
- 4) T. W. Alexion letter to D. F. Schnell, dated July 31,-1989
- 5) ULHRC-2083, dated September 29, 1989
- 6) ULNRC-2088, dated October 4, 1989 I
References 1 and 3 requested the NRR Staff to review the interpretation that the combined liner butt weld along with the associated pre-tested channel fillet welds and leak test connections constitute the actual containment boundary in post accident conditions.
This interpretation would form the basis for not venting the containment liner weld channels during a containment integrated leak rate test (ILRT).
Since the leak chase design and construction moots the intent of the ASME Code,Section III, Div. 1, Subsection.NE-2000 and 3000 (as shown in References 5 and 6), Union Electric requests NRC concurrence that the leak chase system is an integral part of the containment boundary and does not need to be vented during a containment ILRT.
If you have any questions concerning this letter, please contact us.
Very truly
- ours, W
Donald F. Schnell WEK/sla s
'p 9003090492 900223 3,g:
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.t STATE OF MISSOURI )
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Alan C. Passwater, of lawful _ age, being first duly sworn upon oath says that he is Manager, Licensing and Fuels (Nuclear) for c
Union Electric Company; that he has read the foregoing document and knows the content thereof that he has executed the same for and on l
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.
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By Alan C.
Passwater Manager, Licensing and Fuels Nuclear o
SUBSCRIBED and sworn to before me this c23AI day of
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DAG3 ARA J. P[ AIT h01ARY PUBLIC. STATE OF MISSOURI MY COMM!SSION EXPIRES APRIL 22, 1993 ST LOUIS COUNTY
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cci Gerald Charnoff, Esq.
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Shaw, Pittman, Potts & Trowbridge i
2300 N.. Street, N.W.
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20037
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Dr. J. O. Cermak CFA, Inc.
16 Professional Drive (Suite 110)
Gaithersburg, MD 20879 I
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 i
U.S. Nuclear Regulatory Commission RR#1 Stoedman, Missouri 65077 S. V. Athavale (2)
Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission 1 White Flint, North, Mail Stop 13E21 11555 Rockville Pike i
Rockville, MD 20852 Manager, Electric Department 1
Missouri Public Service Commission 4
P.O. Box 360 Jefferson City, MO 65102 t