ML20141D115
| ML20141D115 | |
| Person / Time | |
|---|---|
| Site: | Monticello  |
| Issue date: | 05/13/1997 |
| From: | Kim T NRC (Affiliation Not Assigned) |
| To: | Richard Anderson NORTHERN STATES POWER CO. |
| References | |
| TAC-M97781, NUDOCS 9705200002 | |
| Download: ML20141D115 (3) | |
Text
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May 13, 1997 Mr. Roger 0. Anderson, Director Distribution:
Licensing and Management Issues LDocket Fily OGC j
Northern States Power Company PUBLIC AGill l
414 Nicollet Mall PD3-1 Rdg.
JKudrick Minneapolis, MN 55401 JRoe KKavanagh EAdensam(EGA1)
ACRS JJacobson, DRP/RIII
SUBJECT:
MONTICELLO NUCLEAR GENERATING PLANT - REQUEST FOR ADDITIONAL INFORMATION ON LICENSE AMENDMENT REQUEST DATED JANUARY 23, 1997 ENTITLED UPDATE OF DESIGN BASIS ACCIDENT CONTAINMENT TEMPERATURE AND PRESSURE RESPONSE (TAC N0. M97781)
Dear Mr. Anderson:
By letter dated January 23, 1997, and as revised by letter dated January 28, j
1997, Northern States Power Company (NSP) submitted a license amendment requesting review and approval of an update to the design basis accident containment temperature and pressure response.
In addition, on March 4, 1997, NSP submitted supplemental information in response to a staff request.
Based on our review of the March 4,1997 submittal, the staff has determined that additional information is necessary to complete its review.
The enclosed request for additional information (RAI) provides details of the required material.
Please provide your response within 60 d.ays of the date of this letter.
If you need additional time, or if you have any questions, please contact me at (301) 415-1392.
i Sincerely, j
Original signed by Beth Wetzel Tae Kim, Senior Project Manager Project Directorate III-1 Division of Reactor Projects III/IV Office of Nuclear Reactor Regulation Docket No:
50-263
Enclosure:
As stated cc w/ encl:
See next page DOCUMENT NAME:. G:\\WPD0CS\\MONTICEL\\ MON 97781.RA1 To receive a copy of this docurnent, indicate in the box: "C" = Copy without enclosures *E" = Copy with enclosures "N"
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s Mr. Roger 0. Anderson, Director Monticello Nuclear Generating Plant Northern States Power Company cc:
J. E. Silberg, Esquire Adonis A. Neblett Shaw, Pittman, Potts and Trowbridge Assistant Attorney General 2300 N Street, N. W.
Office of the Attorney General Washington DC 20037 445 Minnesota Street Suite 900 U.S. Nuclear Rogulatory Commission St. Paul, Minnesota 55101-2127 Resident Inspector's Office 2807 W. County Road 75 Monticello, Minnesota 55362 Plant Manager Monticello Nuclear Generating Plant ATTN: Site Licensing Northern States Power Company 2807 West County Road 75 Monticello, Minnesota 55362-9637 Robert Nelson, President Minnesota Environmental Control Citizens Association (MECCA) 1051 South McKnight Road St. Paul, Minnesota 55119 Commissioner Minnesota Pollution Control Agency l
520 Lafayette Road St. Paul, Minnesota 55119 Regional Administrator, Region III U.S. Nuclear Regulatory Commission 801 Warrenville Road Lisle, Illinois 60532-4351 Comissioner of Health Minnesota Department of Health 717 Delaware Street, S. E.
Minneapolis, Minnesota 55440 Darla Groshens, Auditor / Treasurer l
Wright County Government Center l
10 NW Second Street Buffalo, Minnesota 55313 Kris Sanda, Commissioner Department of Pubile Service 121 Seventh Place East Suite 200 St. Paul, Minnesota 55101-2145 2% ms
s, RE0 VEST FOR ADDITIONAL INFORMATION MONTICELLO NUCLEAR GENERATING PLANT 1.
Please specify the amount of containment overpressure necessary to meet both short-and long-term NSPH [ net positive suction head] requirements for all four cases provided in the March 4,1997 submittal.
2.
Provide the minimum containment pressure analyses that support the amount of containment overpressure assumed in the NPSH calculations.
If new code is used for the containment pressure analyses, then the new code should be benchmarked against a code that has been approved by the staff.
Results from such benchmarking studies should be provided for staff review.
3.
Has the operation of containment sprays been factored into the assumption of containment overpressure?
4.
How much of an impact will the higher than rated pump flow have on the brake horsepower requirements for the core spray and LPCI [ low pressure core injection] pump motors?