ML20207L771

Summary of 990223 Meeting with NSP to Discuss Potential NRC Review Process for New Core & Thermal Hydraulic Computer Modeling Methods Currently Under Evaluation by NSP

ML20207L771
Person / Time
Site:	Monticello, Prairie Island
Issue date:	03/11/1999
From:	Lyon C NRC (Affiliation Not Assigned)
To:	NRC (Affiliation Not Assigned)
References
NUDOCS 9903180263
Download: ML20207L771 (4)

Text

. _ _

6'c - 24 3 4i C"%

j

\\

UNITED STATES i

g

r -

NUCLEAR REGULATORY COMMIS810N

)

WASHINGTON, D.C. 30006 4 001 I

-March 11, 1999 LICENSEE:

Northem States Power Company (NSP)

FACILITIES: _ Monticello Nuclear Generating Plant Prairie Island Nuclear Generating Plant

SUMMARY

OF THE FEBRUARY 23,1999, MEETING WITH NSP TO DISCUSS l

THE FUELS GROUP TOPICAL REPORT SCHEDULE On February 23,1999, a meeting was held between NRC staff and NSP representatives to discuss the potential NRC review process for new core and thermal hydraulic computer modeling methods currently under evaluation by NSP, the EPRI [ Electric Power Research Institute) schedule for completion of the CPM 3/CORETRAN analysis topical report, and NSP's transition plan for converting methodologies. The meeting was open to the public and was noticed on February 1,1999. A list of meeting participants is enclosed.

NSP discussed the computer models that it is currently using and provided a status of its evaluations of the codes that it may propose to use in the near future, including CASMO4/ SIMULATE 3, CASMO4/ SIMULATE 3 WITH DYNODE-P, CPM 3/CORETRAN, and RETRAN-3D. In the near term, the new codes would be used for core and thermal hydraulic calculation models at the Monticello and Prairie Island plants. NSP has also signed a contract to perform the calculations for Nebraska Public Power District's Cooper plant, in the long term, if NSP provides its fuel management services to other utilities, the codes could be used for other plants.

NSP discussed the need for a generic approval process, including core and safety analyses for pressurized-water reactors and boiling-water reactors, that could provide for change to previously approved computer codes or the addition of new plants. They propose to submit a generic topical report describing the process used to benchmark data and a process to

//

determine uncertainties for new methods or plants. They could then develop a specific topical

//

report for each plant or site to document the process, which would be sent to the NRC for information. The generic process could result in improved efficiency for the industry and the NRC.

The staff discussed some of the information that the submittal for a new methodology would need to contain to allow an efficient review, including sufficient benchmark data that was current and covered an adequate range for each plant type, use of approved statistical methods, and the range of applicability, capabilities, and limitations of the code.

J l

(,-,-,~-

- y w e.

~, y Vs s.

. - - -. ~

n-

1 2

During the meeting, no regulatory decisions or commitments were requested or made.

ORIGINAL SIGNED BY Carl F. Lyon, Project Manager Project Directorate ill-1 Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket Nos. 50 263,50-282, and 50-306

Enclosure:

As stated cc w/ encl: See next page HARD COPY Docket File (50-263,50-282,50-306)

PUBLIC PD#3-1 Reading j

C. F. Lyon OGC ACRS E-MAIL i

S. Collins /R. Zimmerman B. Sheron J. Zwolinski/S. Black C. A. Carpenter T. Hiltz J.Lyons E. Kendrick M. Chatterton A. Attard A. Ulses T. Fitz R. Lanksbury DOCUMENT NAME: G:\\PD3-1\\WPDOCS\\MONTICEL\\MTS223 To receive a copy of this document. Ind6cate in the box: "C" = Copy without attachment / enclosure "E* = Copy with attachment / enclosure "N* = No copy OFFICE PM:PD31 lC LA:PD31

(\\ ) C D;PD31 lC NAME FLyon:db (

CJamerson G.V CACarpenter (M DATE 3 /lD/99 -

3/10/99

[]

3 /f t /99 OFFICIAL RECORD COPY

^

North:m Stat:s Power Company Monticello cnd Przirin liland Nucirr

{

Generating Plants e

ec.

Mr. Roger O. Anderson, Director Kris Sanda, Commissioner Nuclear Energy Engineering Department of Public Service Northem States Power Company 121 Seventh Place East i

. 414 Nicollet Mall Suite 200 i

Minneapolis, Minnesota 55401 St. Paul, Minnesota 55101-2145

~ J. E. Silberg, Esquire Daria Groshens, Auditor / Treasurer Shaw, Pittman, Potts and Trowbridge Wright County Govemment Cetitor l

2300 N Street, N. W.

10 NW Second Street Washington DC 20037

. Buffalo, Minnesota 55313 l

l U.S. Nuclear Regulatory Commission Adonis A. Noblett Resident inspector's Office Assistant Attorney General 2807 W. County Road 75 -

Office of the Attomey General Monticello, Minnesota 55362 455 Minnesota Street Suite 900 i

Plant Manager St. Paul, Minnesota 55101-2127 Monticello Nuclear Generating Plant l

ATTN: Site Licensing Plant Manager Northem States Power Company Prairie Island Nuclear Generating 2807 West County Road 75 Plant '

Monticello, Minnesota 55362 9637 Northem States Power Company 1717 Wakonade Drive East Robert Nelson, President' Welch, Minnesota 55089 Minnesota Environmental Control Citizens Associa:lon (MECCA)

U.S. Nuclear Regulatory Commission i

1051 South McKnight Road Resident inspector's Office l

St. Paul, Minnesota 55119 1719 Wakonade Drive East i

Welch, Minnesota 55089-9642 Commissioner Minnesota Pollution Control Agency Mr. Stephen Bloom, Administrator 520 Lafayette Road Goodhue County Courthouse St. Paul, Minnesota 55119 Box 408 Red Wing, Minnesota 55066-0408 Regional Administrator, Region lll U.S. Nuclear Regulatory Commission Site Licensing 801 Warrenville Road Prairie Island Nuclear Generating Plant Lisle, Illinois 60532-4351 Northern States Power Company 1717 Wakonade Drive East Commissionerof Health Welch, Minnesota 55089 Minnesota Department of Health 717 Delaware Street, S. E.

Tribal Council Minneapolis, Minnesota 55440 Prairie Island Indian Community ATTN: EnvironmentalDepartment 5636 Sturgeon Lake Road Welch, Minnesota 55089 I

June 1998

E MEETING ATTENDEES FOR THE FEBRUARY 23,1999, MEETING WITH NORTHERN STATES POWER COMPANY (NSP)

TO DISCUSS THE FUELS GROUP TOPICAL REPORT SCHEDULE NAME AFFILIATION J.Lyons NRC/SRXB E. Kendrick NRC/SRXB M. Chatterton NRC/SRXB A. Attard NRC/SRXB A. Ulses NRC/SRXB C. F. Lyon NRC/PD3-1 R. Anderson NSP C.Bonneau NSP D. Kern NSP Contractor

. _.