ML20247M726
| ML20247M726 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 05/19/1998 |
| From: | Thomas K NRC (Affiliation Not Assigned) |
| To: | Randolph G UNION ELECTRIC CO. |
| References | |
| GL-97-04, GL-97-4, TAC-M99970, NUDOCS 9805260360 | |
| Download: ML20247M726 (3) | |
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May 19,1998
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Mr. Gterry L. Randolph -
~ Vice President and Chief Nuclear Officer Union Electric Company Post Office Box 620 Fulton, Missouri 65251
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION FOR UNION ELECTRIC COMPANY, CALLAWAY PLANT, UNIT 1 (TAC NO. M99970)
Dear Mr. Randolph:
The staff issued Generic Letter (GL) 97-04, " Assurance of Sufficient Net Positive Suction Head for Emergency Core Cooling and Containment Heat Removal Pumps" on October 7,.1997.' The GL requested that licensees provide information necessary to confirm the adequacy of the net positive suction head available for emergency core cooling and containment heat removal pumps. By letter dated December 19,1997, Union Electric Company submitted its 90-day response to GL 97-04.. The staff has reviewed your response and has determined that additional information is necessary. Please provide the information in the enclosed request within 30 days from the date of this letter. Should you have any questions, please contact me at (301) 415-1362.
Sincerely, Original Signed By M. K. Gray.
Kristine M. Thomas, Project Manager Project Directorate IV-2 Division of Reactor Projects - lil/IV Office v( Nuclear Reactor Regulation -
~ Docket No. 50-483 -
DISTRIBUTION:
Docket File
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Mr. Garry L. Randolph May 19, 1998 cc w/ encl:
Professional Nuclear-Mr. Otto L. Maynard 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 Chamoff, Esq.
Thomas A. Baxter, Esq.
Mr. Dan 1. 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 Quality Assurance Regulatory Support Mr. Lee Fritz i
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 66149 Mr. J. V. Laux, Manager St. Louis, Missouri 63166-6149 Quality Assurance Union Electric Company Post Office Box 620 Fulton, Missouri 65251 Manager-Electric Department Missouri Public Service Commission 301 W. High Post Office Box 360 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 Resou6ces P.O. Box 176 Jefferson City, Missouri 65102 l
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Enclosure j
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REQUEST FOR ADDITIONAL INFORMATION UNION ELECTRIC COMPANY CALLAWAY PLANT. UNIT 1 l
DOCKET NO. 50-483 i
1.
What is the maximum sump temperature assumed in the net positive suction head (NPSH) analyses?
2.
In response to question 3, it is stated that " minor calculation adjustments to the required and available NPSH values are currently being evaluated." Provide a description of the minor adjustments to the analyses and their effect on NPSHR and NPSHA.
3.
Will the GL 97-04 response be updated when the minor adjustments to calculations are complete?
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