ML20125A620

Forwards Monticello Nuclear Power Station LOCA Analysis Conformance W/10CFR50,App K

ML20125A620
Person / Time
Site:	Monticello
Issue date:	07/09/1975
From:	Mayer L NORTHERN STATES POWER CO.
To:	Ziemann D Office of Nuclear Reactor Regulation
Shared Package
ML20125A623	List: ML20125A620 ML20125A625
References
NUDOCS 9212080420
Download: ML20125A620 (4)

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ygp NORTHERN 5TATES POWER COMPANY MlN N E A POLI S. MIN N E SOTA 95401 July 9, 1975

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M r. D. L. Ziemann, Chie f s s -~3 OperatingReactors Branch # 2 O -

i Division of Reactor Licensing %T g U. S. Nucicar Regulatory Commis n Washington, DC 20555  ; JUN 1 11975-

Dear Mr. Zimann:

)d MONTICELLO NUC E4bCEgRATIN  ! PLANT DOCKET No. 50-26hM{tchg . DPR-22 Transmittal of ECCS Analyses Attached, please find a report entitled "Monticello Nuclear Power Station, Loss-of-Coolant Accident Analyses, Conformance with 10 CFR 50 Appendix K, June 1975."

This filing is in response to the following letters f rom you; December 27, 1974 Order for Modification of License, April 24, 1975 Request for Analyses Including Criteria on Manually Controlled Electrically Operated Valves and June 18, 1975 Identification of Required Information for ECCS Analyses.

On the receipt of the December 27, 1974 Order we immediately made arrangements with the General Electric Company to perform the required analyses. We also i

requested them to increase the scope of that project on receipt of each of the subsequent letters identified above. As it became apparent that General Electric could not meet our initial request for the analyses by June 1,1975, (to allow suf ficient time to review the material and prepare Technical Specifications by July 9,1975) we filed a request for extension on June 18, 1975. The July 3,1975 l

1etter f rom K. R. Goller to L. O. Mayer in effect denied this request and asked for the analyses prior to licensee review. Contrary to a statement in that letter, l we did not indicate that we had received the evaluation from our reactor vendor.

Our request for an extension stated General Electric's intention to transmit the analyses by June 26, 1975. The attached evaluation was received .on July 7,1975 and due to the requirement for immediate submittal, it has _not had even our most cursory review prior to reproduction. We have not had the opportunity to verify l that the two letters increasing the scope of the analyses have been included. Dis-cussions with General Electric indicate that the April 24, 1975 letter is compiled with in full, but that parts of the June 18, 1975 letter may not be addressed l completely.

The attached analyses support MAPLHCR . limits different from those currently in the Monticello Technical Specifications. These changes will be prepared and reviewed expeditiously in accordance with existing legal requirements concerning proposed Technical Specification Changes. The changes will basically consist of using l

Figures D-5A, B, C, D and E of the attachment to supercede Figure 3.5.1 of our exist-ing Technical Specification and Figures 3.11.1-A, B and C of our pending License Amendment Request Dated : August 20, 1974.

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• NOR HERN CTATED POWER COMPANY Mr. D. L. Ziemann 2 July 9, 1975 We have been informed by General Electric that Figures B-2, C-1, C-2, D-1, and D-2 of the attached report are considered proprietary for the following reasons.

These figures contain information which is of the' type which General Electric customarily maintains in confidence and withholds from public disclosure. The information has been handled and classified proprietary by General Electric in accordance with procedures and standards set forth in Attachment A to this letter, and we hereby make application for withholding from public disclosure this in-formation in accordance with the provision of 10 CFR 2.790. The analytical methods and the data which would be em promised by public disclosure of these figures were developed at considerabic expense to the General Electric Company and the release of the information would allow competetors to confirm similiar designs without incurring similar expense. We have proprietary agreements with General Electric and have handled this information in accordance with those agreements and Attachment A. Non-proprietary versions of the proprietary figures will be submitted with our Techrical Specification change request on this matter. ,

Yours very truly, S - 'ei L. O. FMyer, PE Manager, Nuclear Support Services LOM/ deb cc: J. G. Keppler (without proprietary figures)

G. Charnof f MPCA Attn: J. W. Fe rman (without proprietary figures)

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ATTACINENT A GENERAL ELECTRIC PROPRIETARY CLASSIFICATION SYSTEM General Electric proprietary documents contain information and are of the type which General Electric customarily maintains in confidence and withholds from public disclosure. To the best of General Electric's knowledge and belief, such documents have consistently been maintained in confidence and no public disclosure has been made of them.

Documents are classified proprietary pursuant to standard General Electric pro-cedures pertaining to such classification. General Electric's definition of proprietary information is similar to that used in the courto to define

" trade secrets". The definition encompasses "any formula, pattern, device or compilation of information which is used in one's business and which gives him an opportunity to obtain an advance over competitors who do not know or use it". Additionally, a substantial element of secrecy must exist, so that, except by the use of improper means, there.would be difficulty in ac-quiring the information. Some factors to be considered in determining whether given information is proprietary are: (1) the extent to which the information is known outside the business; (2) the extent to which it is known by employees and others involved at General Electric; (3) the extent of measures taken to guard the secrecy of the information; (4) the value of the information to General Electric and its competitors; (5) the amount of ef fort or money expended by General Electric in developing the information; and (6) the ease or difficulty with which the information could be properly acquired or duplicated by others. Additional information treated as con-fidential consists of business intelligence such as business plans, forecasts, financial data and similar information which, if obtained by competition, could compromise the interest of the Company, k

NRC STRIBUTION FOR PART 50 DOCKE .1 AT E RI AL (TEMPORARY FORM)

CONTROL NO: 7 0.5 FILE:

F ROM: Northern States Power Co DATE OF DOC DATE REbD LTR TWX RPT OTHER Minneapolis, Mn

___ _ _ ..L _0_May e r_ 7-9-E 7-11-75 _JLX TO: ORIG CC OTHER SENT NRC PDR *II_ _ _

Mr Ziemann one signed SE NT LOC A L PD R ._ *XX

. CLASS U NC L ASS PROPINFO INPUT NO CYS REC'D DOCKET NO:

XXXXXXXXX 1 50-263 DESCRIPTION: p n e r g ,,. g /clo y c, % : tec ENCLOSURES:

Lt r r e que s t inhw [khho1'~ dkn g"ptb'huanD t o Reanalysis of ECCS Acceptance Criteria. . . . .

10 CFR 2.790.....trans the following:

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