ML20209J094

Forwards SER Finding Rev 7 to Topical Rept NSPNAD-8102, Reload Safety Evaluation Methods for Application to PI Units, Acceptable for Ref in Plant Licensing Actions

ML20209J094
Person / Time
Site:	Prairie Island
Issue date:	07/15/1999
From:	Kim T NRC (Affiliation Not Assigned)
To:	Richard Anderson NORTHERN STATES POWER CO.
Shared Package
ML20209J100	List: ML20209J094 ML20209J113
References
TAC-MA4731, TAC-MA4732, NUDOCS 9907210126
Download: ML20209J094 (4)

Text

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I \ UNITED STATES I

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g NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. snama anni L

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July 15, 1999

[ Mr. Roger O. Anderson, Director l- Nuclear Energy Engineering Northern States Power Company l

414 Nicollet Mall L Minneapolis, Minnesota 55401 -

SUBJECT:

PRAIRIE ISLAND NUCLEAR GENERATING PLANT, UNITS 1 AND 2 - SAFETY EVALUATION FOR TOPICAL REPORT NSPNAD-8102, REVISION 7 (TAC NOS.

MA4731 AND MA4732) . .

Dear Mr. Anderson:

The staff has reviewed Revision 7 to Topical Report NSPNAD-8102, " Reload SWAv <

l-.

l Evaluation Methods for Application to PI Units," submitted by Northern States Power (NSP).

l The ruision incorporates new methods developed by NSP for determining the minimum

! required shutdown margin for an inadvertent boron dilution event initiated from subcritical conditions. Revision 7 also incorporates corrections to sections of the text in the previously approved version, Revision 6, that either contained errors or needed er.Ncncement. We find the Revision 7 acceptable for referencing in Frairie Island licensing actions. A copy of our related ,

Safety Evaluation is also enclosed. .

l J l Sincerely, l

1

, 1 Tae Kim, Senior Project Manager, Section 1 i Project Directorate ill Division of Licer ing Project Management j Office of Nuclear Reactor Regulation j Docket Nos. 50-282 and 50-306

Enclosure:

Safety Evaluation I cc w/ encl: See next page q

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\

900138 {

9907210126 990715 PDR-P ADOCK 05000282 PDR J

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Mr. Roger O. Anderson, Director Prairie Island Ncclear Generating Northem States Power Company Plant cc:

J. E. Silberg, Esquire Site Licensing Shaw, Pittman, Potts and Trowbridge Prairie Island Nuclear Generating 2300 N Street, N. W. Plant Washington DC 20037 Northem Ctates Power Company 1 1717 Wakonade Drive East Plant Manager Welch, Minnesota 55089 Prairie Island Nuclear Generating Plant Tribal Council Northem States Power Company Prairie Island Indian Community 1717 Wakonade Drive East ATTN: Environmental Department 4 Welch, Minnesota 55089 5636 Sturgeon Lake Road Welch, Minnesota 55089 Adonis A. Nebiett Assistant Attomey General Site General Manager Office of the Attorney General Prairie island Nuclear Generathg 455 Minnesota Street Plant Suite 900 Northern States Power Company .

St. Paul, Minnesota 65101-2127 1717 Wakonade Drive East Welch, Minnesota 55089 U.S. Nuclear Regulatory Commission Resident inspecter's Office 1719 Wakonade Drive East Welch, Minnesota 55089-9642 Regional Administrator, Region ill U.S. Nuclear Regulatory Commission 801 Warrenville Road

~

Lisle, Ittinois 60532-4351 1 Mr. Stephen Bloom, Administrator Goodhue County Courthouse Box 408 Red Wing, Minnesota 55066-0408 Commissioner Department of Public Service 121 Seventh Place East Suite 200 I

St. Paul, Minnesota 55101 2145 Apre 1990

n- , 1 July 15, 1999-Mr. Roger O. Anderson, Director Nuclear Energy Engineering Northern States Power Company 414 Nicollet McIl Minneapolis, Minnesota 55401

SUBJECT:

PRAIRIE ISI.AND NUCLEAR GENERATING PLANT, UNITS 1 AND 2 - SAFETY EVALUATION FOR TOPICAL REPORT NSPNAD-8102, REVISION 7 (TAC NOS.

MA4731 AND MA4732)

Dear Mr. Anderson:

The staff has reviewed Revision 7 to Topical Report NSPNAD-8102, " Reload Safety Evaluation Methods for Application to PI Units," submitted by Northern States Power (NSP).

The revision incorporates new methods developed by NSP for determining the minimum required shutdown margin for an inadvertent boron dilution event initiated from suberitical conditions. Revision 7 also incorporates corrections to sections of the text in the previously approved version, Revision 6, that either contained errers or needed enhancement. We find the Revision 7 acceptable for referencing in Prairie Island licensing actions. A copy of our related Safety Evaluation is also enclosed.

Sincerely, Original signed by:

Tae Kim, Senior Project Manager, Section 1 Project Directorate lli Division of Licensing Project Management Of5ce of Nuclear Reactor Regulation Docket Nos. 50-282 and 50-306

Enclosure:

Safety Evaluation cc w/ encl: See next page ,

1 l

l DOCUMENT NAME: G:\PD3-1\WPDOCS\ PRAIRIE \SERMA4731.WPD i Ts ,ecahre a copy of this document, indicata in the bor 'C" = Copy without ettachment/ enclosure "E" = copy wem anachment/ enclosure "N" = No copo I OFFICE PUl:LPD3 . lE LA:LPD3 E SC:SRXB, _ _ l SC:LPif l NAME TJKim 7;t/4 EBamhill W EWeiss?T,ff4 , CCraic] RL l DATE /) / (f 799 7 /j /99 7 //)/99 t'"'" '7 / if/99 I

/ OFFICIAL RECORD COPY I

l i

. ~ ~ .

DATED: July 15, 1999 Docket File (50-282,50-306)

PUBLIC PDill-1 Reading J. Zwolinski/S. Black C. Thomas E. Bamhill T. J. Kim (2)

OGC G. Hill (4)

ACRS R. Lanksbury, Rlll '

E-Mail SE to Ray Scholl 9

4

os. 15, 1999-Mr. Roger O. Anderson, Director Nublear Energy Engineering Northem States Power Company 414 Nicollet Mail Minneapolis, Minnesota 55401

SUBJECT:

PRAIRIE ISLAND NUCLEAR GENERATING PLANT, UNITS 1 AND 2 - SAFET(

EVALUATION FOR TOPICAL REPORT NSPNAD-8102, REVISION 7 (TAC NOS.

MA4731 AND MA4732)

Dear Mr. Anderson:

The staff has reviewed Revision 7 to Topical Report NSPNAD-8102, " Reload Safety Evaluation Methods for Application to P! Units," submitted by Northern States Power (NSP).

The revision incorporates new methods developed by NSP for determining the minimum required shutdown margin for an inadvertent boron dilution event initiated from suberitical conditions. Revision 7 also incorporates corrections to sections of the text in the previously approved version, Revision 6, that either contained errors or needed enhancement. We find the l

Revision 7 acceptable for referencing in Prairie Island licensing actions. A copy of our related Safety Evaluation is also enclosed.

Sincerely, j j

Original signed by:

Tae Kim, Senior Project Manager, Section 1 Project Directorate Ill Division of Licensing Project Management '

Office of Nuclear Reactor Regulation Docket Nos. 50-282 and 50-306 1

Enclosure:

Safety Evaluation cc w/ encl: See next page DOCUMENT NAME: G:\PD3-1\WPDOCS\ PRAIRIE \SERMA4731.WPD '

v. c.c.w . copy w mi. sacum.aunam in m. ter c con .= noemenu.nciow. v . con we m.mm.w.ncio-. r . w e OFFICE PM:LPD3 ,

E LA:LPD3 E SC:SRXB, _ _ SC:LPQ NAME TJKim 7;1/4 EBarnhill M- EWeiss7'T,/f4 , CCraid NL DATE /J / 9 799 1 / 9 /99 7 // A99 "" 7 / if/99

/ OFFICIAL RECORD COPY

.......i. ._