ML20248A559
| ML20248A559 | |
| Person / Time | |
|---|---|
| Site: | Byron, Braidwood  |
| Issue date: | 05/22/1998 |
| From: | John Hickman NRC (Affiliation Not Assigned) |
| To: | Kingsley O COMMONWEALTH EDISON CO. |
| References | |
| GL-97-04, GL-97-4, TAC-M99961, TAC-M99962, TAC-M99968, TAC-M99969, NUDOCS 9805290411 | |
| Download: ML20248A559 (6) | |
Text
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Msy'22, 1998
- 4 Mr. Oliver D. Kingsley, President Nuclear Generation Group,
Commonwealth Edison Company Executive Towers West lil 1400 Opus Place, Suite 500 Downers Grove, IL 60515
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION FOR BRAIDWOOD STATION, UNITS 1 AND 2; AND BYRON STATION, UNITS 1 AND 2 (TAC NOS. M99961, M99962, M99968 AND M99969),
Dear Mr. Kingsley:
s 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 January 5,1998, Commonwealth Edison Company submitted its 90-day response to GL 97-04. The staff has reviewed your response and has determined that ad' itional information is d
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) 415-3017.
Sincerely l higinal Signed By:
John B. Hickman, Project Manager Project Directorate ill-2 l-Division of Reactor Projects - lil/lV Office of Nuclear Reactor Regulation l
Docket Nos. STN 50-454, STN 50-455, STN 50-456, STN 50-457 i
Enclosure:
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May 22, 1998 s
Mr. Oliver D. Kingsley, President Nuclear Generation Group
' Commonwealth Edison Company Executive Towers West lil l
1400 Opus Place, Suite 500 Downers Grove, IL 60515
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION FOR BRAIDWOOD STATION, UNITS j
1 AND 2; AND BYRON STATION, UNITS 1 AND 2 (TAC NOS. M99961, M99962, M99968 AND M99969) 1
Dear Mr. Kingsley:
The staff issued Generic Letter (GL) 97-04, " Assurance of Sufficient Not Positive Suction Head for Emergency Core Cooling and Containment Heat Removal Pumps," on October 7,1997.
The GL requested that licensees provide infonnation necessary to confirm the adequacy of the net positive suction head available for emergency core cooling and containment heat removal pumps.
By letter dated January 5,1998, Commonwealth Edison 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 informs. tion in the enclosed request within 30 days from the date of this letter. Should you have any questions, please contact me at (301) 415-3017.
Sincerely, Original Signed By:
John B. Hickman, Project Manager Project Directorate lil-2 Division of Reactor Projects - lil/IV Office of Nuclear Reactor Regulation Docket Nos. STN 50-454, STN 50-455, STN 50-456, STN 50-457
Enclosure:
RAI cc w/ encl: See next page DISTRIBUTION Docket File -
PUBLIC PD3-2 r/f JKudrick, NRR ACRS
' RCaruso EAdensam, EGA1 SRichands OGC JHickman CMoore SBailey MJordan, MJJ i
DOCUMENT NAME: G:\\CMNTSP\\ BRAID-BY\\BB99968.RAI Ts receim e copy of this document,indcate in the box: "C" = Copy without enclosures "E" = Copf with enclosures "N" = No copy l
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May 22, 1998 Mr. Oliver D. Kingsley, President Nuclear Generation Group I
, Commonwealth Edison Company Executive Towers West lli 1400 Opus Place, suite 500 Downers Grove, IL 60515
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION FOR BRAIDWOOD STATION, UNITS I
1 AND 2: AND BYRON STATION, UNITS 1 AND 2 (TAC NOS. M99961, M99962, M99968 AND M99969)
Dear Mr. Kingsley:
The staff issued Generic Letter (GL) 97-04, " Assurance of Sufficient Net Positive Suction Head for Emergency Core Cooling and Containment Heat Removal Pumps," c,n 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 January 5,1998, Commonwealth Edison 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) 415-3017.
Sincerely, John B. Hickman, Project Manager Project Directorate ill-2 Division of Reactor Projects - til/lV Office of Nuclear Reactor Regulation Docket Nos. STN 50-454, STN 50-455, STN 50-456, STN 50-457
Enclosure:
RAI cc w/ encl: See next page
s O. Kingsley Byron /Braidwood Stations Commonwealth Edison Company cc:
Ms. C. Sue Hauser, Project Manager George L. Edgar Westinghouse Electric Corporation Morgan, Lewis and Bochius Energy Systems Business Unit 1800 M Street, N.W.
Post Office Box 355 Washington, DC 20036 Pittsburgh, Pennsylvania 15230 Attomey General Joseph Gallo 500 S. Second Street -
Gallo & Ross Springfield, Illinois 62701 1250 Eye St., N.W., Suite 302 Washington, DC 20005 lilinois Department of Nuclear Safety Office of Nuclear Facility Safety Michael 1. Miller, Esquire 1035 Outer Park Drive Sidley and Austin Springfield, Illinois 62704 One First National Plaza Chicago, Illinois 60603 Commonwealth Edison Company Byron Station Manager Howard A. Leamer 4450 N. German Church Road Environmentallaw and Policy Byron, Illinois 61010-9794
. Center of the Midwest 35 East Wacker Dr., Suite 1300 Commonwealth Edison Company Chicago, Illinois 60601 Site Vice President - Byron 4450 N. German Church Road U.S. Nuclear Regulatory Commission Byron, Illinois 61010-9794 Byron Resident inspectors Office 4448 N. German Church Road U.S. Nuclear Regulatory Commission Byron, Illinois 61010-9750 Braidwoo.. Resident inspectors Office RR 1, Bra 79
~ Regional Administrator, Region lli Braceville, Illinois 60407 U.S. Nuclear Regulatory Commission 801 Warrenville Road Mr. Ron Stephens
. Lisle, Illinois 60532-4351 lilinois Emergency Services and Disaster Agency Ms. Lorraine Creek 110 E. Adams Street RR 1, Box 182 Springfield, Illinois 62706 Manteno, Illinois 60950 Chairman Chairman, Ogle County Board Will County Board of Supervisors l
Post Office Box 357 Will County Board Courthouse Oregon, Illinois 61061 Joliet, Illinois 60434 l
Mrs. Phillip B. Johnson Commonwealth Edison Company 1907 Stratford Lane Braidwood Station Manager Rockford, Illinois 61107 RR 1, Box 84 Braceville, Illinois 60407 L__--_____-__-__-_
O c'
O. Kingsley Commonwealth Edison Company 2-Byron /Braidwood Stations Ms. Bridget Little Rorem -
Ms. Irene Johnson, Licensing Director Appleseed Coordinator Nuclear Regulatory Services 117 N. Linden Street Commonwealth Edison Company Essex, Illinois 60935 Executive Towers West lli 1400 Opus Place, Suite 500 Document Control Desk-Licensing Downers Grove, IL 60515 Commonwealth Edison Company 1400 Opus Place, Suite 400 Commonwealth Edison Company Downers Grove, Illinois 60515 Reg. Assurance Supervisor-Braidwood RR 1, Box 79 Commonwealth Edison Company Braceville, Illinois 60407 Site Vice President-Braidwood RR 1, Box 84 Commonwealth Edison Company Braceville,IL 60407 Reg. Assurance Supervisor-Byron 4450 N. German Church Road Mr. David Helwig Byron, Illinois 61010-9794 Senior Vice President Commonwealth Edison Company Mr. Michael J. Wallace Executive Towers West lli Senior Vice President
- 1400 Opus Place, Suite 900 Commonwealth Edison Company Downers Grove,IL 60515 Executive Towers West til 1400 Opus Place, Suite 900 Mr. Gene H. Stanley Downers Grove, IL 60515 PWR's Vice President Commonwealth Edison Company Executive Towers West til 1400 Opus Place, Suite 900 Downers Grove, IL 60515 Mr. Steve Perry BWR's Vice President
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Commonwealth Edison Company i
Executive Towers West lli 1400 Opus Place, Suite 900 Downers Grove, IL 60515 Mr. Dennis Farrar Regulatory Services Manager Commonwealth Edison Company Executive Towers West 111 1400 Opus Place, Suite 500 Downers Grove,IL 60515 e
di REQUEST FOR ADDITIONAL INFORMATION RELATED TO NRC GENERIC LETTER GL 97 04 BRAIDWOOD AND BYRON STATIONS 1.
What is the maximum sump temperature assumed in the net positive suction head (NPSH) analyses?
2.
In rerponse to Question 3 it is stated that, "neither the methodology for calculating NPSH nor the acceptability of the analyses as documented in the above table have changed from that which was previously reviewed and approved by the NRC." This could imply that the inputs to the analyses have changed since it was last reviewed and approved by the staff, if this is correct, specify the differences between the reviewed and approved analyses and the current analyses, and whether the change was done under 10 CFR 50.59.
ENCLOSURE
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