ML20135F935

Forwards Request for Addl Info in Order to Complete Review of Licensee 970123 License Amend Requesting Review & Approval of Update to Design Basis Accident Containment Temperature & Pressure Response

ML20135F935
Person / Time
Site:	Monticello
Issue date:	03/12/1997
From:	Kim T NRC (Affiliation Not Assigned)
To:	Richard Anderson NORTHERN STATES POWER CO.
References
TAC-M97781, NUDOCS 9703170204
Download: ML20135F935 (4)

Text

_.. ._ _._ _ _ ___ _ _ _ _. _ .._.-.- _ .-_ _ . .. - . - _ . _ _ _ . _ _ . _ .

Mr.' Roger 0. Anderson, Director Distribution: '

4 Licensing and Management Issues _ Docket File: 0GC Northern-States Power Company PUBLIC AGill

, 414 Nicollet-Mall ~ PD3-1 Rdg. JKudrick

. Minneapolis, MN 55401 JRoe KKavanagh

{ EAdensam(EGA1) ACRS

JJacobson, DRP/RIII i

S BJECT: 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 l PRESSURE RESPONSE (TAC N0. M97781)

Dear Mr. Anderson:

2 By letter dated January 23, 1997, and as revised by letter dated January 28, 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.

i Based on a preliminary review of the above submittals, 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. days of the date of this letter. If you need additional time, or if you have any questions, please contact me at l (301)-415-1392.

Sincerely, Orig. signed by Tae Kim, Senior Project-Manager Project Directorate 111-1 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:\WPDOCS\MONTICEL\ MON 97781.RA1 To receive a copy of this document, indicate in the box: "C" = Copy without enclosures "E" = Copy with enclosures "N"

= No copy 0FFICE PD31:PM lE PD31:LA ,l E PD31:PD ff NAME TJKim -r,f#. CJamerson (W / JHannon L' I DATE 3//L/97 ' 3/12/97 // 3// 1 /97 0FFICIAL RECORD COPY v' gh g noo20 yOL i 9703170204 970312 PDR ADOCK 05000263 P PDR

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NUCLEAR REGULATORY COMMISSION o WASHINGTON, D.C. 20666 4 001

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• • • • • s March 12, 1997 l

Mr. Roger 0. Anderson, Director l Licensing and Management Issues l Northern States Poder Company l 414 Nicollet Mall  !

Minneapolis, MN 55401 l

SUBJECT:

MONTICEll0 NUCLEAR GENERATING PLANT - REQUEST FOR ADDITIONAL INFORMATION ON LICENSE AMENDMENT REQUEST DATED JANUARY 23, 1997 .

l ENTITLED UPDATE OF DESIGN BASIS ACCIDENT CONTAINMENT TEMPERATURE AND PRESSURE RESPONSE (TAC NO. M97781)

Dear Mr. Anderson:

By letter dated January 23, 1997, and as revised by letter dated January 28, 1997, Northern States Power Company (NSP) submitted a liconse amendment requesting review and approval of an update to the design basis accident containment temperature and pressure response.

Based on a preliminary review of the above submittals, 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 days of the date of this letter. If you need additional time, or if you have any questions, please contact me at (301) 415-1392.

Sincerely, yk A Tae Kim, Senior Project Manager Project Directorate 111-1 Division of Reactor Projects III/IV Office of Nuclear Reactor Regulation Dacket No: 50-263

Enclosure:

As stated cc w/ enc 1: See next page

.- < l RE0 VEST FOR ADDITIONAL INFORMATION ,

MONTICELLO NUCLEAR GENERATING PLANT l l

1. Which code is used in the decay heat analyses? Was this code used in the previous analyses? If not, then justify its use.

2. List and justify the changes in input parameters used in the ANS 5.1 versus those used previously in the May Witt analyses.

3. Provide and justify the values for the following ANS 5.1 input parameters:

4

1. Q (total recoverable energy) =(MeV/ fission)

2. 6Q (net recoverable energy) =(MeV/ fission)

3. P (total power from fissioning of one nuclide) -(MeV/sec)

4. 6P (net power from fissioning of nuclide) =(MeV/sec)

5. Fractional fission product power for: U235, U238, Pu239, and Pu241

6. R-factor (the actinide production multiplier)

7. G-factor (a decay heat multiplier to account for the effect of neutron capture in fission products)

8. Si (a multiplier applied to the G-factor equation l 4. Provide the value used for estimating the length of time cf full power

operation before shutdown.

5. Justify that your use of the ANS 5.1 analyses is conservative by showing that at least two standard deviations of confidence in your analyses results is provided.

6. Were the contributions to the decay heat from U-239 and Np-239 calculated in accordance with Branch Technical Position ASB 9-27 If not, provide the equation used to calculate them.

l s

- 4 l

Mr. Roger 0. Anderson, Director Monticello Nuclear Generating Plant ,

Northern States Power Company I cc:

J. E. Silberg, Esquire Adonis A. Nebiett 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 Regulatory Comission St. Paul, Minnesota 55101-2127 Resident Inspector's Office 2807 W. County Road 75 Monticello, Minnesota 55362 1

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 -

Connissioner Minnesota Pollution Control Agency 520 Lafayette Road St. Paul, Minnesota 55119 Regional Administrator, Region III U.S. Nuclear Regulatory Comission 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 Wright County Government Center 10 NW Second Street Buffalo, Minnesota 55313 Kris Sanda, Comissioner Department of Public Service 121 Seventh Place East Suite 200 St. Paul, Minne:ota 55101-2145 w ms

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