ML20128H520
| ML20128H520 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 10/07/1996 |
| From: | Thomas K NRC (Affiliation Not Assigned) |
| To: | Schnell D UNION ELECTRIC CO. |
| References | |
| IEB-96-001, IEB-96-1, TAC-M95050, NUDOCS 9610090374 | |
| Download: ML20128H520 (4) | |
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UNITED STATES y
j NUCLEAR REGULATORY COMMISSION Ci4'ff WASHINGTON, D.C. 206t&0001 p$
October 7,1996 Mr. Donald Schnell Senior Vice President - Nuclear Union Electric Company Post Office Box 149 St. Louis, Missouri 63166
SUBJECT:
NRC BULLETIN 96-01, " CONTROL R0D INSERTION PROBLEMS - UNION ELECTRIC COMPANY, CALLAWAY PLANT, UNIT 1 (TAC NO. M95050) 1
Dear Mr. Schnell:
i By letter dated April 4,1996, Union Electric Company (UE) submitted its planned control rod testing for the Refuel 8 outage at the Callaway Plant in response to MC Bulletin 96-01, " Control Rod Insertion Problems." By letter dated September 4,1996, the NRC informed UE that the planned testing for the Callaway Plant was inadequate. By letter dated September 20, 1996, Union Electric submitted its modified Refuel 8 control rod testing plan. This information was supplemented by letters dated September 27 and 30,1996.
The staff has reviewed the revised testing plan for measuring control rod drop times.
For control banks, UE plans to record the time to dashpot entry.
For control and shutdown banks, UE plans to record turnaround times (a time roughly corresponding to rod bottom) instead of obtaining recoil data.
In addition, UE will compare the rod drop times obtained at end of cycle (E0C) to those at beginning of cycle (B0C) 8 and provide these results to the NRC prior to the performance of the drag testing. While this proposed testing is slightly different from that requested in the bulletin, the staff considers this revised plan to be adequate.
In addition, UE submitted the power history, temperature and burnup data for Callaway Cycles 7 and 8.
The staff has reviewed this data and compared it with similar data from Vogtle Electric Generating Plant Units 1 and 2, which use the same fuel type (17 X 17 Vantage 5 with IFM grids) as Callaway. On the basis of this comparison, the staff has concluded that it is not necessary to drag test all rodded assemblies. However, the staff requests that rodded
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assemblies from Cycle 8 that will be rodded in Cycle 9, as well as the 13 fuel
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assemblies from Cycle 8 with burnups exceeding 30,000 MWD /MTV, be drag tested.
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9610090374 961007 PDR ADOCK 05000403 P
Mr. Donald Schnell If you have any questions regarding this matter, please contact me at (301) 415-1362.
Sincerely, Original signed by:
Kristine M. Thomas, Project Manager Project Directorate IV-2 Division of Reactor Projects - III/IV Office of Nuclear Reactor Regulation Docket No. 50-483
Enclosure:
cc See next page DISTRIBUTION:
Docket File ACRS TWFN PUBLIC PDIV-2 Reading JRoe OGC, 015B18 EAdensam WJohnson, RIV i
WBateman JDyer, RIV KThomas EPeyton RJones, SRXB MChatterton, SRXB i
i l
i DOCUMENT NAME: CAL 95050.LTR OFC PDIV-2/PM PDIV-2/LA SRXB/BCjy-NAME KThomasitar E@
RJonesW DATE O/Y/96 1 0 /'7 /96 A /e/ /96 0FFICIAL RECORD COPY
Mr. Donald Schnell,
If you have any questions regarding this matter, please contact me at (301) 415-1362.
Sincerely, Original signed by:
Kristine M. Thomas, Project Manager Project Directorate IV-2 Division of Reactor Projects - III/IV Office of Nuclear Reactor Regulation Docket No. 50-483
Enclosure:
cc See next page DISTRIBUTION:
Docket File ACRS TWFN PUBLIC PDIV-2 Reading JRoe OGC, 015B18 EAdensam WJohnson, RIV WBateman JDyer, RIV KThomas EPeyton RJones, SRXB MChatterton, SRXB DOCUMENT NAME: CAL 95050.LTR OFC PDIV-2/PM PDIV-2/LA SRXB/BC,-
f NAME KThomasitV E@
RJonesW DATE IO/Y/96 1 0 /'7 /96 A/V/96 0FFICIAL RECORD COPY
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Mr. D. F. Schnell,
cc:
l Professional Nuclear Mr. Neil S. Carns Consulting, Inc.
President and Chief Executive Officer 19041 Raines Drive Wolf Creek Nuclear Operating Corporation Derwood, Maryland 20855 P.O. Box 411 Burlington, Kansas 66839 Gerald Charnoff, Esq.
Thomas A. Baxter, Esq.
Mr. Dan I. Bolef, President Shaw, Pittman, Potts & Trowbridge Kay Drey, Representative 2300 N. Street, N.W.
Board of Directors Coalition Washington, D.C.
20037 for the Environment 6267 Delmar Boulevard Mr. H. D. Bono University City, Missouri 63130 Supervising Engineer, Site Licensing Mr. Lee Fritz Union Electric Company Presiding Commissioner Post Office Box 620 Callaway County Court House Fulton, Missouri 65251 10 East Fifth Street Fulton, Missouri 65151 U.S. Nuclear Regulatory Commission Resident Inspector Office Mr. Alan C. Passwater, Manager 8201 NRC Road Licensing and Fuels Steedman, Missouri 65077-1302 Union Electric Company Post Office Box 149 Mr. G. L. Randolph, Vice President St. Louis, Missouri 63166 Nuclear Operations Union Electric Company Mr. J. V. Laux, Manager P.O. Box 620 Quality Assurance Fulton, Missouri 65251 Union Electric Company Post Office Box 620 Manager - Electric Department Fulton, Missouri 65251 Missouri Public Service Commission 301 W. High i
Post Office Box 360 l
Jefferson City, Missouri 65102 Regional Administrator, Region IV U.S. Nuclear Regulatory Commission Harris Tower & Pavilion 611 Ryan Plaza Drive, Suite 400 Arlington, Texas 76011-8064 Mr. Ronald A. Kucera, Deputy Director Department of Natural Resources P.O. Box 176 Jefferson City, Missouri 65102