ML19319D495

Forwards Second Round Questions Re Electrical Power Grid Instability,Lack of Offsite & Ac/Dc Onsite Power Sys Independence, & Failure of Emergency Feedwater Sys to Meet Single Failure Criterion.W/O Encl

ML19319D495
Person / Time
Site:	Crystal River
Issue date:	07/25/1973
From:	Stello V US ATOMIC ENERGY COMMISSION (AEC)
To:	Deyoung R US ATOMIC ENERGY COMMISSION (AEC)
References
NUDOCS 8003170622
Download: ML19319D495 (2)

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e. rRoquested Complation Date:J. July 12, 1973'

' Applicant 9 Ecaponse Date: C August 18, 1973

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j Description of Response:: Second Set:of Quastions T g% ?

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Review Status:y Coarplats u:r a

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Enclosed is a listing cf the saccad' set of questionsL prepared by the L:RS

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' Electrical, Instnuentatica and Control Systems 3rsuch. for transmittal to the.applicent._ This"liat'refleets the resulta of our review of.the appli-

' ' cation through h ndmenti 26. The ceelosed listi' states tha positicus which

_ we will be taking in our! safety, evaluation. Also, it includes additional raquasts.for thformanon resulting from deficient responses to our first set of questions.: The responses to our previcusIrequests for-informatica are characteched as lacking eguality and comprehension of the subject in question. Emi the(rasponses f:o:a' tha' applica:::t;is: prove 'significantly

~.from those of t.he firoc astlef questions, our review cannot be completed in time for the safety. evaluation report.'

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The' significant'p chlen. areas. outstanding in this ' application are: (1)

F Telectrical power, grid inermM1 f tyg (2) lack.of.independance in the offsite, Q se essitef and,de omaite. power. systems, and (3) an. emergency'fesdwater sye-2 6 e v}.:, s.mA f tem id:ich ^deesinot most thEsinglaifailure Teriterion.k. ~'

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Ji, M during. the CP review of Aguirre. This position stated that'an;onsita power

'l, l. system of proportionally. higher reliability 'and/or additional capability c.f 7 ~ must be' considered to ciospensatelfor;the reduced ~ availability of, the off-

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' 's., f ;Q^aite power,systas.% Fwther.fnformation with regard' te:this eonee c.

4 as' the 'other problamL arees:sontioned:a.bove,is presested.m.n'the enclmsed.

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" consultants u discuss these problos areas and to set the tone as to the.1 type and quality of info mation that we vill require to comp 1nts our

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0-icinal Signedlig 7 e

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Victor Stallo, Jr... Assistant Director

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