ML20148G060

Notice of Issuance & Availability of Amend 25 to License DPR-3.Preliminary Determination:Noticing of Proposed Licensing Amend Concurrences Encl

ML20148G060
Person / Time
Site:	Yankee Rowe
Issue date:	10/07/1976
From:	Schwencer A Office of Nuclear Reactor Regulation
To:
Shared Package
ML20148G041	List: ML20148G037 ML20148G043 ML20148G048 ML20148G055 ML20148G060
References
NUDOCS 8011070154
Download: ML20148G060 (4)

Text

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4 i UNITED STATES NUCLEAR' REGULATORY COMMISSION $

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DOCKET N0. 50-29 "

YANKEE ATOMIC ELECTRIC COMPANY f NOTICE OF ISSUANCE OF AMENDMENT TO FACILITY OPERATING LICENSE f

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t The U. S. Nuclear Regulatory Commission (the Commission) has issued p 6

r Amendment No. 25 to Facility Operating License No. DPR-3 issued to Yankee Atomic Electric Company which revised Technical Spe-ifications for p operation of the Yankee Nuclear Pcwor Station (Yani c-Rowe) located in $

g Rowe, Massachusetts. The amendment is effective as of the date of f st p

issuance, The amendment changes the requirement in the lechnical Specifications II f

relating to the ECCS accumulator pressure, to reflect actual accumulator Q A

flow in the ECCS performance analysis for Core XII which we have previously J,g u.

found to be acceptable and in compliance with 10 CFR 550.46. The previous 4

scecification was not consistent with the ECCS performance analysis.  ;'

4 Since the time that this inconsistency was identified earlier in the p p

year, the licensee has operated at the correct pressure on the interim 7 basis. This amcndment modifies the facility Technical Specification to g g,

reflect this corrected oressure. ljd !

Ql The application for the amendment complies with the standards and Si

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requirements of the Atomic Energy Act of 1954, as amended (the Act), and ij the Commission's rules and regulations. The Commission has made appropriate &i

^l findings as required by the Act and the Commission's rules and regulations .;

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in 10 CFR Chapter I, which are set forth in the license amendment. Prior  ;. f Q

l public notice of this amendment was not required since the amendment does l not involve a significant hazards consideration, ky The Commission has determined that the issuance bf this amendment d will not result in any significant environmental impact and that pursuant y$

g to 10 CFR 551.5(d)(4) an environmental statement, negative declaratio.', p or environmental impact appraisal need not be prepared in connection with p issuance of this amendment. #

For further details with respect to this action, see (1) the-1 fi d'

application for amendment dated May 11, 1976, and supplements dated l"[

j May 11, 17, 19, 1976, and June 16,1976,(2) Amendment No. 25 to License b

.xyg No. DPR-3 and (3) the Commission's related Safety Evaluations dated M May 19, 1976 and October 7, 1976. All of these items are available f g

e for public inspection at the Commission's Public Document Room 1717

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H; Street, N. W., Washington, D. C. 20555, and at the Greenfield Public $k 4

Library, 402 Main Stree.t. Greenfield, Massachusetts 01581. A copy of f fg.

. items (2) and (3) may be obtained upon request addressed to the U. S. jg}

Nuclear Regulatory Commission, Washington, D. C. 20555, Attention:

Director, Division of Operating Reactors, j[

' Dated at Bethesda, Maryland, this 7th day of October 1976. .

FOR THE NUCLEAR REGULATORY COMMISSION *I

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A. Schwencer, Chief hb.

Operating Reactors Branch #1 d Division of Operating Reactors  %

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c-PRELIMINARY DETERMINATION .

. NOTICING OF PROPOSED L7 CENSING AMEND' TENT, $

LICENSEE: Yankee Atomic. Electric Company (Yankee-Rowe) -

l REQUEST FOR:

Change Tech Spec relating to ECCS accumulator pressure.

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e REQUI.ST DATE:  %,

mt PROPOSED ACTION: () Pro-notice Recommended fg.

JNX) Post-notico Recommended .

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() Determinntion delayed pending completion of Safety Evaluation ag f

W m-EASIS FOR DECJSION: Licensee's recent investigation of ECCS design and performance fS confirced that flow capability of the ECCS accumulator as tested at the plant (which le in agreement with the initial system design flow calculations) is slightly higher (gyeg than the accumulator flow calculated in the ECCS performance analysis. This is so gg because flow resistances used as input in the ECCS performance calculations were 1* .

intentionally chosen somewhat higher for conservatism. Licensee's further investigation ?Ai of the difference between the actual (and realistically calculated accumulator flow)

• and the slightly lower accumulator flow in the ECCS analysis required adjustment  :((

of the accumulator pressure (which is an LCO) to assure that required flow will be H1 delivered to reflect actual plant behaviour, viz, accumulator flow as verified by ".~

acceptable plant tests. The proposed action (change of the specified accumulator i pressure) acceptably corrects accumulator flow,does not involve a cha,nge of the appreved evaluation model, analysis methods, or conservative assumptions prescribed j'dy by Appendix K, and assures the same results of the Core XII ECCS performance analysis j2 for Yankee-Rowe which we have previously approved. , fy; For the above reasons the proposed action does not involve a significant hazards hk consideration. gt 2N."

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( ) EIS Required -

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.( ) Negative Declaration (ND) and Environmental Impact i

Appraisal (EIA) Required i

i (XX) No EIS, ND or EIA Required i *

( -) Detemination delayed pending completion of EIA BASIS FOR DECISION: This action involves the same environmental considerations r31ating to ECCS performance analysis which we hava previously prenoticed and for which we have previously issued a Negative Declaration and Environmental Impact Statement. Therefore, no EIS,'ND or EIA are required.

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