ML20012B411

Provides Addl Info Requested to Clarify Changes Proposed to Tech Spec Action Statements for Inoperable Accumulator

ML20012B411
Person / Time
Site:	Millstone
Issue date:	03/02/1990
From:	Mroczka E NORTHEAST NUCLEAR ENERGY CO., NORTHEAST UTILITIES
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20012B412	List: ML20012B411 ML20012B495
References
B13469, NUDOCS 9003140354
Download: ML20012B411 (3)

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March 2, 1990-1-

Docket No. 50-423 B13469 Re: 10CFR50.90 ,

1 U.S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, DC 20555

Reference:

(1) E. J. Mroczka' letter to the U.S. Nuclear Regulatory

- Commission, " Millstone Nuclear Power Station, Unit No. 3, Proposed Revision to Technical Specifications, Accumu-lators," dated December 11, 1989.

Gentlemen:

Millstone Nuclear Power Station, Unit No. 3 Proposed Revision to Technical Specifications. Accumulators By letter dated December 11,1989 (Reference (1)), Northeast Nuclear Energy

-Company (NNECO) . submitted a proposed ' revision to the Technical Specifications <

for Millstone Unit No. 3. In a subsequent discussion with the NRC Staff,

additional information was requested to clarify the changes proposed to the Action Statements. for an inoperable accumulator. The purpose of this submit-tal is-to provide the Staff with the requested information. ,

The proposed changes, transmitted in Reference (1), would allow 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> to restore the inoperable accumulator (proposed ACTION statement 'a'), except as a result of a closed isolation valve or boron concentration, or 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />

-(proposed: ACTION statement 'c') if the inoperability is due to the boron concentration not being within the limits. These proposed changes are being combined into a single ACTION statement. Specifically, the revised proposed

' ACTION statement 'a' will allow 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> to restore the inoperable accumulator, except as a result of a' closed isolation valve.

It should- be noted that the significant hazards consideration discussion previously included in the December 11, 1989, letter is still applicable for the above revised change. The revised Technical Specification page is provid-ed inLAttachment 1.

9003140354 9003 DR ADOCK 050 [pk P U. p Q p\

, OS342J AEV. 4 o . i U.S. Nuclear Regulatory Commission t B13469/Page 2

, March 2, 1990 We trust the Staff finds this additional information helpful. Should you have any additional questions, please contact our licensing representative direct-ly.

Very truly yours, NORTHEAST NUCLEAR ENERGY COMPANY l'&

/

W E. J. MrK zka Senior Vice President cc: W. T. Russell, Region I Administrator l D. H. Jaffe, NRC Project Manager, Millstone Unit No. 3 1 W. J. Raymond,-Senior Resident Inspector, Millstone Unit Nos. 1, 2, and 3  :

Mr. Kevin McCarthy, Director I Radiation Control Unit Department of Environmental Protection Hartford, Ct C5116 STATE OF CONNECTICUT)

) ss. Berlin COUNTY OF HARTFORD )

l Then personally appeared before me, E. J. Mroczka, who being duly sworn, did i state that he is Senior Vice President of Northeast Nuclear Energy Company, a l

Licensee herein, that he is authorized to execute and file the foregoing information -in the name and on behalf of the Licensee herein, and that the statements contained in said information are true and correct to the best of l

his knowledge and belief.

Iwrm On Sheltc(%

l Notary Public l

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'A i Docket No. 50-423 i B13469 l

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Attachment 1 Millstone Nuclear Power Station, Unit No. 3-Proposed Revision to Technical Specifications Accumulators

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1 March 1990 i