ML20128A693

Affidavit Supporting Requested Extension of Time for Submitting ECCS Evaluation & License Amend Through 740916

ML20128A693
Person / Time
Site:	Monticello
Issue date:	06/14/1974
From:	Wachter L NORTHERN STATES POWER CO.
To:
Shared Package
ML20128A679	List: ML20128A673 ML20128A693
References
NUDOCS 9212030427
Download: ML20128A693 (3)

Text

- .

9  %

m i

I l UNITED STATES OF AMERICA r

ATQ41C ENERGY COMMISSION In the Matter of )

)

NORTHERN STATES POWER CQ4PANY ) Docket No. 50-263

)

(Monticello Nuclear Generating Plant) )

AFFIIAVIT OF LEO J WACirrER STATE OF MINNESOTA )

) ss.

COUNTY OF HENNPIN )

LEO J WACHTER, being duly sworn says:

1. I am the Vice-President of Power Production and System Operation of the Northern States Power Company (NSP). I make this affidavit in support of NSP's requested extension of time for the Emergency Core Cooling System (ECCS) evaluation required by Title 10 of the Code of Federal Regulaticas, Section 50.46, for the Monticello Nuclear Generating Plant, License No. DPR- 22.

2. On January 4,1974 the Atomic Energy Commission (AEC) promulgated changes in the Federal Register to 10CFR Part 50 to become effective February 4, 1974. In particular, two sentences were added to Section 50.34 of 10CER Part 50, a new section 50.46 was added to 10CFR Part 50 and Appendix K was added to 10CFR Part 50. Section 50.46 requires that an ECCS evaluation accompanied by proposed changes to the Technical Specifications or license amendments must be submitted within six months of the effective date based on an ECCS evaluation model meeting the requirements of Appendix K. Section 50.46 further provides that a licensee may request an extension to the six month period for good cause.

Such a request is required to be submitted not less than 45 days prior to the expiration of the six month period and to be accompanied by affidavits shouing precisely why the evaluation is not complete and the minimum time believed necessary to complete it.

(

I 9212030427 740614 PDR ADOCK 05000263 P PDR

3. The first step in providing the required ECCS evaluation is for the AEC staf f to concur that a reactor vendor's ECCS model meets- the requirements of Appendix K. The General Electric ECCS model which will be used for the Monticello evaluation has been under intensive review by the AEC staf f since January, 1974. At the present time, AEC staff concurrence has been obtained for only certain portions of the model. Concurrence as to the remaining portions is expected in the near future. The complete Monticello ECCS eval-untion cannot be done satis factorily without this concurrence.

4. Ceneral Electric has begun the Monticello ECCS evaluation using those portions of the model presently having AEC staf f concurrence. They have es tab-lished a schedule for completing the Monticello calculations along with a number of other boiling water reactor plants assuming imminent concurrence by the AEC staf f on the remainder of their ECCS model. Their current schedule indicates that July 18, 1974 is the earliset possible date by which the Monticello ECCS evaluation and technical information for a Technical Specification change or license amend-ment will be completed and sent to NSP.

5. Administrative controls contained in the Monticello Technical Specifi-cations require that the Operations Committee and the Safety Audit Committee review proposed changes to the Technical Specifications or operating license. NSP will require approximately 60 days to complete an in-depth review and to prepare the formal license submittal once the ECCS evaluation and the technical information for a Technical Specification change or license amendment are received from -

General Electric.

6. Based on the earliest projected date for having calculations available f rom General Electric, as well as the minimum time required for a thorough review of any Technical Specification changes that may be necessary NSP will be unable to meet the August 4, 1974 deadline. NSP, therefore, respectfully requests an extension of the deadline through September 16, 1974.

2

g -

~ i This requested extension does not provide contingency for delays beyond NSP's control; such as, for example, a delay in the time required by the AEC staf f to give its concurrence on the remaining portions of the General Electric ECCS model or the time required by General Electric to conclude the Monticello calculations.

At the time of the submittal of NSP's license amendment the company intends to impose on the Monticello operations the most conservative combina-tion of existing and proposed Technical Specifications relating to the ECCS pe r fomance. Preliminary calculations have been performed by General Electric attempting to show approximately what ECCS evaluation results might be expected based on Appendix K. These projections indicate that while operating'at rated power Monticello is presently in compliance with the provisions of the new ECCS criteria.

Oh<

Leo (# Wachter

~~1 Subscribed and sworn to before me this 14th day of June, 1974.

/

i t , -l 1 l, ^ ". ' -

9 //A*) . Y

• U

' ' Not Public dHN J. SMITH Heterr Pubhc. Hennepin County, MinneeMa A.7 Conirnissien Empires March 3,1976 3

(..