ML20012C944
| ML20012C944 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 03/14/1990 |
| From: | Athavale S Office of Nuclear Reactor Regulation |
| To: | Schnell D UNION ELECTRIC CO. |
| Shared Package | |
| ML20012C945 | List: |
| References | |
| TAC-72750, NUDOCS 9003260166 | |
| Download: ML20012C944 (3) | |
Text
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1 March 14,1990
~ Docket No.~ 250-483 DISTRIBUTION:-
( 6 3NRC & Local PDRs
'4r. Donald F. Schnell PDIII-3 r/f JZwolinski
' Senior Vice President'- Nuclear JHannor SVAthavale Union Electric Company PKreutzer 0GC-WF1 Wi Post Office Box 149 EJordan ACRS(10)
St. Louis, Missouri 63166 PDIII-3 Gray
Dear Mr. Schnell:
SUBJECT:
CONTAINMENT LINER LEAK CHASE CHANtlEL VENTING CALLAWAY PLANT UNIT NO. 1 (TAC NO. 72750)
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On February 23, 1990, you submitted a request to qualify the containment liner leak chase channels as an integral part of the containment liner plate.
In addition, you-submitted additional supporting'information relating
- to the above request via letters dated July 10, 1987, March 20, 1989, Oc+ober 4, 1989 and September 29, 1989. The staff has reviewed your request and all related r M ttals, p
Based on our review of the information submitted, the staff has concluded that-the containment liner leak chase channels, as built per 1974 code of ASME meet the intent of ASME Boiler and Pressure Vessel Code, Section.III, Division 1, subsections NE 2000, 3000 and 4000 for clt 1 MC components (1983). The channel welds at the redefined pressure boundary are qualitatively equivalent to those for the primary containment liner and.the channels are capable to withstand the loading conditions of a postulated design basis accident as well as during normal operation and maintain their structural E
integrity at all times. Therefore, the staff concurs that it is not necessary for Callaway Nuclear Plant to-vent the liner weld leak chase channels to containment during a containment integrated leakage rate test, provided 7
visual inspections required by 10 CFR Part 50, Appendix J, Section V, are performed for readily accessible areas prior to each subsequent Type A test.
1 A copy our safety evaluation is enciesed.
Sincerely, S. V. Athava
, Project Manager h
Project Directorate III-3 Division of Reactor Projects - III, 4 oo um cf 0 o 71 b o I & (.
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IV, V and Special Projects PDR Mot t J
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Office of Nuclear Reactor Regulation a
Enclosure:
Safety Evaluation l
E cc: See next page cb yi Office:
LA/PDIII-3 Pli/PRI-1-3 PDN0111-3 F
Surname: PKeektr%r SVAthavale/tg JHannon Date:
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NUCLEAR REGULATORY COMMISSION i
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March 14, 1990 Docket No.- 50-483 Mr. Donald F. Schnell Senior Vice President - Nuclear
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Union Electric Company j
Post Office Box 149 St. Louis, Missouri 63166 L.
Dear Mr. Schnell:
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SUBJECT:
' CONTAINMENT LINER LEAK' CHASE CHANNEL YENTING CALLAWAY PLANT UNIT NO.1(TAC ~NO.72750)
On February 23, 1990, you submitted a request to qualify the containment liner leak chase channels as an integral part of the containment liner plate. :In addition, you submitted additional supporting $nformation relating to the 'above request via. letters dated July 10,, 1987, March 20, 1989, October 4, 1989 and September 29, 1989. The staff hat reviewed yDur request and all related submittals.
l Based on our review of the inforation submitted. the staff has concluded that the containment liner leak chase channels, u built per 1974 code of'
'ASME meet the' intent of ASME Boiler e d Pressure Vessel Code,'Section III,
' Division 1, subsections NE 2000, 3000 and.4000 for class MC componeints (1983).Thechannelweldsattheredefinedpressureboardaryarequalitatively_
equivalent to those for the frimary containment liner and the channels are capable to withstand the lorO ng conditions of a postulated design basis l
' accident as well as during normal operation and maintain their structural integrity _at all times. Therefore, the staff concurs that <it is not necessary for.Callaway Nuclear Plant'to vent the liner weld leak chase channels to
' containment during a containment integrated leakage rate test, provided, visual inspections required by 10 CFR Port 50, Appendix J Section V, are performed for readily access (ble, areas' prior to each subsequent Type A test.
A copy our safety evaluation is enclosed.
Sincerely,
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S. V. Athavale, Project Manager Project Directorate III-3 Division of Reactor Projects - III, IV, V.and S'pecial Projects Office of Nuclear Reactor Regulation
Enclosure:
Safety Evaluation cc: See next page.
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' Mr. D. F. Schnell Callaway Plant s
Union Electric Company Unit No. 1 l
cc:
Dr. J. O. Cermack Mr. Bart D. Withers CFA Inc.
President and Chief 4 Professional Dr., Suite 110 Executive Officer Gaithersburg, MD 20B79 Wolf Creek Nuclear Operating Corporation Gsraid Charnoff, Esq.
P. 0. Box 411
~ Thomas A'. Baxter, Esq.
Burlington, Kansas-66B39 Shaw, Pittman, Potts & Trowbridge 2300 N Street, N. W.
Mr. Dan I. Bolef, President Wathington, D. C.
20037 Kay Drey, Representative Board of Directors Coalition fir. T. P. : Sharkey for the Environment Supervis 4q Engineer,-
St. Louis Region-Site. Licensing 6267 Delmar. Boulevard Union Electric Company University City, Missouri 63130 Post-Office Eox 620 Fulton, Missouri 65251-U. S. Nuclear Regulatory Commission Resident Inspectors Office RR#1-Steedman,ttissouri 65077 Mr. Alan C. Passwater, Manage l
Licensing and Fuels Union ~ Electric Company L,.
Post Office Box 149 St. Louis, Missouri 63166 l
Manager - Electric Department
- 111ssouri-Public Servica Commission
. 301 W. High Post Office Box 360 Jefferson. City, Missouri 65102 Regional Admin 4trator U. S. NRC, Region II' 799' Roosevelt Reed Glen Ellyn Illinois 60137 Mr. Ronald A.-Kc.erE Deputy Director
- DepartmentofI;atsiralRasources P. O. Box 176 Jefferson City, Missouri 65102
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