ML20235B960

Requests That Tech Spec Requirement for Isolation Valve Exercising Be Waived,Allowing Full Load Operation of Plant Over 721209-10 Weekend

ML20235B960
Person / Time
Site:	Monticello, 05000000
Issue date:	12/07/1972
From:	Mayer L NORTHERN STATES POWER CO.
To:	Anthony Giambusso US ATOMIC ENERGY COMMISSION (AEC)
Shared Package
ML20235B311	List: IA-87-111, Submits Rept on Plant,As Discussed in ACRS 150th Meeting on 721012-14.Listed Items Can Be Resolved During Const & Facility Can Be Constructed W/Reasonable Assurance for Operation W/O Undue Risk to Public Safety IR 05000254/1972009 IR 05000358/1972003 IR 05000358/1973001 IR 05000358/1973002 IR 05000358/1973003 IR 05000358/1973005 IR 05000358/1973006 IR 05000358/1973007 IR 05000358/1974001 IR 05000358/1974002 IR 05000358/1974003 IR 05000358/1975004 ML20235B308 ML20235B364 ML20235B401 ML20235B405 ML20235B424 ML20235B456 ML20235B461 ML20235B465 ML20235B477 ML20235B488 ML20235B507 ML20235B552 ML20235B582 ML20235B585 ML20235B588 ML20235B605 ML20235B618 ML20235B623 ML20235B649 ML20235B656 ML20235B662 ML20235B670 ML20235B679 ML20235B683 ML20235B687 ML20235B702 ML20235B708 ML20235B713 ML20235B714 ML20235B718 ML20235B720 ML20235B730 ML20235B734 ML20235B748 ML20235B754 ML20235B762 ML20235B764 ... further results
References
FOIA-87-111 NUDOCS 8709240300
Download: ML20235B960 (1)

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Mr A osambusso DEOO W d

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Attention: Mr J J aban Deputy DLrector for Resetor Projects Directorate of Licensing

~ United States Atomic Energy Commission hahington, D.C.

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Dear Mr Diambusso MueTICELLO NUCLEAR GMERATING PIANT Idcense Eo. IIR-22 Waiver of hchnical Specification Requirement 4 7.D.I.d Mrsuant to a conversation with Mr J J Shea, ABC-!E, this afternoco, the h

Northern States 7bwer 00sqpany system geneysting capability-to'leset' projected loads over the next seveml days has been greatly reduced due to genenting equissent failu m s.

Monticello Plant 'Elechnical Specification 4.7.D.1.d, IE422, requims a once per voek exercising of the main s+=amm ' power

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e opeisted isolation valves. Isolation valve exercising requires a load re-ductica to &$ of full load. 2 bis load reduction, valve exercising, and load recovery is routinely scheduled over the weekend and results in reduced load for a period or about 40 hours4.62963e-4 days <br />0.0111 hours <br />6.613757e-5 weeks <br />1.522e-5 months <br />.

'Ibe four main steam isolation valves have been exercised weekly for over one and one-half years with no findicatiott of b1 Ming onany single test. In view of the abnomal system electrical capabilit;r conditions and the excellent surveillance test results, it is requested that the Te&nical Specification requirement for isolation valve exercising, k.7.D.1.d, be waived for this

, eekend tbus allowing full load operation of the Monticello Plant over the w

December 9-10, 1972 weekend.

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3, Yours Very truly, he

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i' L 0 Mayer, P..

Director of helear Sapport Services l

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