ML17342A092

Forwards Request for Addl Info Needed for NRC Review of Stretch Power Application.Response Requested within 30 Days of Receipt of Ltr

ML17342A092
Person / Time
Site:	Saint Lucie
Issue date:	05/11/1981
From:	Clark R Office of Nuclear Reactor Regulation
To:	Robert E. Uhrig FLORIDA POWER & LIGHT CO.
References
NUDOCS 8105190008
Download: ML17342A092 (3)

Text

Docket No~50-335

~~Vp rh Or. Robert E. Uhrfg Vice President Advanced Systems 4 Technology Florida Power 5 Light Company P. 0. Box 529100 Miami, Florida 33152 Dear Or Uhrig:

I

-He are revtewing your stretch power application for St. Lucie Un'it 1 and have determined, that the additional-information identified in the enclosure is necessary to continue our review.

Please provide this information within 30 days from receipt of this letter.

Sincerely, Original signed bj Robert A. Ctark-

Enclosure:

As stated

'cc

.. See next page Robert A. Clark, Chief Operating Reactors Branch g3 Division. of Licensing D

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~hat is he ma"n;tuce o-he bias app! ied c

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Tax'.; "m

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~ calculated rad-al peaking factors in fuel pins ad'acent to CV, water noles?

2 For.he C"=0 wi:hdrawal event, i-is stated ha either

.he Yariable High Power l ~vel or Ther, al i~argin/Low Pressure trip are used in conjunction with the init'al st acy s-.a-e 'Qs

-'o prevent ONBR limia from eing exceeded.

it was our unders.andi g

that the CEA!4 event was reclassified as per C"-~V-125(F) so that only the High Power Trip or the Variable Hiah Power Trip were requir d to prevent violation of SAFDLs in lieu of including a, pressure bias component in the Ti't/LP trip algor thm.

Explain the continued reliance on he TN/LP trip for tne CAW event depending on the initial conditions and he reac ivity insertion ra The key parameters assumed in the full lerc:h C9, drop analysis are shown in Table 7.2.4-1.

The dropped C:-A worth,"r the unrodded cond-:ion has decreased from 0.10 to 0.'04" zo.

Please explain this decrease in CEA worth.

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Bank Building Nial Florida 33131 Indi n River Junior College Library 3209 Virginia Avenue For Pierce, Florida 33480

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Ac;.,; ni s=rator Depar

."len ai Envi ranriental Regulation

?ewer Plant Siting Sec"ian 2600 Bi:il 5tane Road Tallahassee, Flori da 32301 i~r. Jack 5chrev Roam 4, HoIland Bu,'! ';nc Tallahassee, Flarii da 32304 Resident Inspector/St.

Luci e Ni clear Power St tian c/o U.S.N.?.C.

P. 0. Box 400 Jensen

Beach, Flor',ca 334".7 Bureau of'ntergovernnzntal R latians 660 Apal achee Parkway Tallahasse, Flori da 32304 Nr. Meldon S. Lewis County Administrator St. Lucie County Z300 Virginia Avenue, Room 104 For. Pierce, Florida 33450 Oi rec" cr, Criteri a and Standards 0 ivi s ion Off'ce "= 'Radia.ion Programs (ANR-460)

U.S. Environmental Protection Agency

'Washington, D. C.

20460

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Environmental Protec" ian Agency Ra~ an IY Orrice AI IN:

EIS COORDINATOR 3<<B Ccurtland Street, H.E..

Atlanta, Georgi a 30308 Y.r. Charles B. Brinkman Nanacer - Mash ngtan Nuclear Operations C-E Power System Car.fustian Engineering, Inc.

48 "3 Car de 1 1 Ave nu e, 5ui te A-1 Be-hesda, Haryl and 20014.