ML20154D803

Submits Annual Rept of Any Change or Error Identified in ECCS Analytical Models or Application

ML20154D803
Person / Time
Site:	Monticello
Issue date:	09/25/1998
From:	Hammer M NORTHERN STATES POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20154D796	List: ML20154D792 ML20154D803
References
NUDOCS 9810070346
Download: ML20154D803 (3)

Text

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m Northern states Power Company F

Monticello Nuclear Generating Plant 2807 West county Road 75 Monticello. MN 55362 September 25,1998 10CFR Part 50 Section 50.46(a)(3)

US Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555 MONTICELLO NUCLEAR GENERATING PLANT Docket No. 50-263 License No. DPR-22 1998 Report of Corrections to ECCS Evaluation Models

References:

1) GE Report NEDC-32514P, Revision 1, "Monticello SAFER /GESTR-LOCA Loss-of-Coolant Accident Analysis," dated October 1997. This reportis Exhibit G of" Revision 1 to License Amendment Request dated July 26,1996 supporting the Monticello Nuclear Generating Plant Power Rerate Program," from Michael F. Hammer (NSP) to US NRC Document Control Desk, December 4,1997.

2) GE Letter TRB:98-167, Letter from TR Brohaugh to TJ Asmus (NSP),

" Annual Report of Changes and Errors in ECCS Evaluation Models,"

dated July 20,1998. (Attached)

3) GE Letter GAW-98-013, G. A. Watford to the U. S. Nuclear Regulatory Commission," Reporting of Changes and Errors in ECCS Evaluation Models," dated June 30,1998.

Pursuant to 10 CFR 50.46(a) the following is the required annual report of any chango or error identified in ECCS analytical models or their application. Monticello's LOCA analysis of record (AOR)is contained in the License Amendment Request for Plant Rerate (Reference 1). The most recent correspondence from GE to NSP reporting errors and changes to the ECCS Analysis is denoted as Reference 2. That letter 9810070346 981001 PDR ADOCK 05000263 1

P PDR 9/28/98 51S Ji\\LICEN5t\\ Periodic ke r a\\ECCS 96R.RP7,kl.coc

transmits Reference 3 wherein GE informed the NRC that no changes were made to or l

errors identified in the ECCS evaluation models during the reporting period.

Please contact Sam Shirey, Sr. Licensing Engineer at (612) 295-1449 if you require further information. This letter contains no new commitments.

M Michael F. Hammer Plant Manager l

Monticello Nuclear Generating Plant

Attachment:

GE Letter TRB:98-167, Letter from TR Brohaugh to TJ Asmus (NSP),

" Annual Report of Changes and Errors in ECCS Evaluation Models,"

l dated July 20,1998.

c:

Regional Administrator-lil, NRC NRR Project Manager, NRC Sr. Resident inspector, NRC State of Minnesota Attn: Kris Sanda J E Silberg i

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'o GENucInrEnirgy ToHR. Brehoogh Nuclearfuelknences FuelProjectManager GeneralSectnc Company F0 Box 780. MICA 33 WikW NC284014780

July 20,1998 810 875 5738 cc: C. A. Bonneau TRB:98-167

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J. E. Fawks H. H. Paustian J. L. Rash R. A. Rossi D. G. Wegener Mr. T. J. Asmus Senior Engineer, Fuel Resources Northern States Power Company 1

414 Nicollet Mall-Ren Sq 10 Minneapolis, MN '55401-1927

Subject:

Annual Report of Changes and Errors in ECCS Evaluation Models l

Referspee: Letter GAW-98-013, G. A. Watford to the U. S. Nuclear Regulatory Commission,

" Reporting of Changes and Errors in ECCS Evaluation Models", dated June 30, i

1998 (attached)

Dear Mr. Asmus:

H Enclosed for your information is a copy of the referenced letter regarding the impact of changes and errors in the Emergency Core Cooling System (ECCS) evaluation methodology used by GE.

The annual ECCS reporting letter was sent to the NRC June 30,1998. It is being sent to you so r-that you remain abreast of the happenings on the annual reporting ofECCS per 10 CFR 50.46 (a)

(3)(ii).

If you would like additional information, please contact me or Jim Rash at (910) 675-5612.

i Very tmly yours,

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T. R. Brohaugh L

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