ML20006E473
| ML20006E473 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 02/16/1990 |
| From: | Athavale S Office of Nuclear Reactor Regulation |
| To: | Schnell D UNION ELECTRIC CO. |
| References | |
| TAC-75619, NUDOCS 9002230270 | |
| Download: ML20006E473 (4) | |
Text
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4.T February 16, 1990-
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_' Docket No. 50-483 DISTRIBUTION:
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,Nr. Donald F. Schnell; EJordan
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Senior Vice President Nuclear PDIII-3 Gray
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Dear M( Schnell:
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SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION REGARDING STORAGE l0F ENRICHED-FUEL IN SPENT FUEL POOL AREA (TAC NO 75619 )l, r
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The staff'is continuing its review of your December '28, 1989 request for'
.revisionLto Technical: Specification sections 5.3.-5.6.1.1-and bases'3/4'.9.3 4
concerning storage of: enriched fuel rods -in the' spent fuel pool and bases for decay: time' prior to fuel movement. _ The staff requests additional information.
identified in the enclosure to continue its review.
. Pleas'e respond _within 30 days ~from the_date of. this letter..This request-for information.affects fewer than 10 respondents; therefore,-0MB clearance is1not. required under Pub. L.96-511.
- Sincerely,
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S.'V.' Atha' vale, Project Manager Project Directorate 111-3 Division of,. Reactor Projects - 111-IV, V, and Special projects Office: of Nuclear Reactor. Regulation :
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Enclosure:
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I' FebruaryL.16,; 1990 m=
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- Docket Noi 50-483 '
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- Mr. Donald F. Schnell Senior Vice President - Nuclear Union Electric Company Post Office Box 149-St.' Louis, Missouri-63166
Dear Mr. Schnell:
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SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION REGARDlHG STORAGE-0F ENRICHED FUEL' IN SPENT FUEL POOL AREA (TAC'NO 75619-)_
' The staff is continuing its-review of your December 28,:1989 request for..
s revision to. Technical Specification sections 5.3,.5.6.1.1 and bases'3/4.9.3' concerning storage of enriched fuel rods in the spent fuel pool-and bases for
' decay time prior-to fuel movement. The staff requests additional-information identified in the enclosure to continue its review.
Please respond within 30 days from the date of this letter. This request-U for information affects fewer than 10-respondents; therefore, 0MB clearance-is not required under-Pub. L.96-511.
Sincerely, M
S. V. Athavale, Project Manager Project Directorate 111-3 Division of Reactor Projects - 111 IV, V, and Special projects Office of Nuclear Reactor Regulation-
Enclosure:
As stated cc:
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Mr. D; F. Schnell Callaway Plant 1;
- Union Electric Company Unit No. 1
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cc:
Dr. J. O. Cermack-Mr..Bart D. Withers CFA-'.Inc..
President and Chief l
4 Professional Dr., Suite 110 Executive Officer' Gaithersburg, MD 20879 Wolf Creek Nuclear Operating Corporation-i L
. Gerald Charnoff, Esq.
P. O. Box 411-L Thomas A.'Baxter, Esq.
Burlington, Kansas 66B39 Shaw, Pittman,.Potts & Trowbridge 2300 N Street, N. W.
Mr. Dan I. Bolef, President
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Washington, D. C.
20037-Kay Drey, Representative
. Board of Directors Coalition Mr. T. P. Sharkey for the Environment r
Supervising Engineer, St. Louis Region
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Site Licensing 6267 Delmar Boulevard Union Electric Company University City, Missouri 63130 Post Office Box 620 L
Fulton, Missouri 65251 U. S. Nuclear Regulatory Commission l.
Resident Inspectors Office i:
RRf1 Steedman, Missouri 65077 l
Mr. Alan C. Passwater, Manager Licensing'and Fuels Union Electric Company Post Office Box 149 St.' Louis,-Missouri 63166 Manager - Electric Department l'
Missouri Public Service Commission l-
~ 301-W. High Post Office Box 360 Jefferson City, Missouri 65102 Regional Administrator U. S. NRC, Region III L
799 Roosevelt Road Glen Ellyn, Illinois 60137
' Mr. Ronald A. Kucera, Deputy Director Department of Natural Resources P. O. Box 176 Jefferson City, Missouri 65102
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ab REQUEST FOR' ADDITIONAL INFORMATION.
CALLAWAY UNIT 1. FUEL ENRICHMENT INCREASE AND STORAGE IN SPENT FUEL POOL J"
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.Your analysis implies that the maximum reactivity' occurs at zero burnup for any nuder of-IFBA rods per assembly. If this is so, explain why and discuss how this has been verified by calculations.
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'What fuel geometry was used for k-infinity ' calculations? This should be described in the FSAR, 3.
Can the distribution of IFBA rods vary between assemblies as compared to the distribution. assumed in the analysis? For example, can one assedly with.30 IFBA rods have a different IFBA rod pattern than another assembly with 30 IFBA rods? If so, what effect does this have on.the rack reactivity results?-
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Discuss the effect of the enrichment increase on postulated reactivity
-accidents in the pool.
Is a minimum boron concentration assumed for accidents? If so, this should be a TS requirement with.a corresponding i
surveillance requirement for periodic sampling..
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The statement is made-that the equivalent k-eff for the storage of spent.
fuel in the Region I fuel racks is determined by modeling two-out-of-four storage. locations. We also understand that a three-out-of-four storage-restriction is required for Region 11 storage. Therefore, please modify TS section 5.6.1.1 to include.these restrictions.
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