ML19326C665

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Advises of Planned Action to Alleviate Potential Valve Failure from Postulated Operator Submergence During Loca. Motor Operators on Valves CV-1050 & 1410 Will Be Replaced W/ LOCA-qualified Submersible Operators
ML19326C665
Person / Time
Site: Arkansas Nuclear 
Issue date: 08/22/1975
From: Cavanaugh W
ARKANSAS POWER & LIGHT CO.
To: Boyd R
Office of Nuclear Reactor Regulation
References
9083, NUDOCS 8004250483
Download: ML19326C665 (2)


Text

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NRC DISi..!BUTION FOR PART 50 DOCKET Mm.~ERI AL a

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CONTROL NO: 09 FILE:

FROM: Arkansas Power & light CoOATE OF DOC DATE REC'D LTR TWX RPT OTHER Little Rock, Arkansas William cavanauch III S-22-75 8-26-75 XXX TO:

ORIG CC OTHER SENT NRC PDR Yvv NRC 1 Simed SENT LOCAL PDR

ccc CLASS UNCLASS PROPINFO INPUT NO CYS REC'D DOCKET NO:

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50-313 DESCRIPTION:

ENCLOSURES:

Furnishing Re-Evaluation of ECCS Performance Regarding alternatives for alleviating the possibility of valve failure as a result of postulated operator submergence durning a LOCA.

(1 Cop"EnclosureReceivedl PLANT NAME:

Arkansas $ 1 FOR ACTION /INFORMATION SA3 8-26-75 BUTLER (L)

SCHWi!NCER (L) /ZIEMANN (L)

REG AN (E)

W/ Copies W/ Copes W/6 Copies W/ Copies nCKNOWLEDGED CLARK (L)

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W/ Copies W/ Copies W/ Copies W/ Copies PARR (L)

VASSALLO (L)

KNIGHTON (E)

SPIES W/ Copies W/ Copies W/ Copies W/ Copies DO NOT REMOV9 KNIEL (L)

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YOUNGBLOOD (E)

LPM W/ Copies W/ Copies W/ Copies W/ Copies INTERNAL DISTRIBUTION MIEG FILD TECH REVIEW DENTON LIC ASS f A/T IND.

/NRC POR SCHROEDER GRIMES R. DIGGS (L)

BRAITMAN AGC, ROOM P 506A MACCARY GAMMILL H. GEARIN (L)

SALTZMAN jGOSSICK/ STAFF VIGHT KASTNER E. GOULBOURNE (L)

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IPPOLITO KNIGHTON M. SLATER (E)

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EXTERN AL DISTRIBUTION

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.cting Director Division of Reactor Licensing U. S. Nuclear Regulatory Comission Washington, D. C.

20555

Subject:

Arkansas Power 6 Light Company Arkansas Nuclear One-Unit 1 Docket No. 50-313 License No. DPR-51 Re-Evaluation of ECCS Performance

Dear tir. Boyd:

In our July 9,1975 transmittal to h!r. A. Giambusso concerning the above subject we stated that we were investigating possible alternatives for alleviating the possibility of valve failure as a result of postulated operator submergence during a LOCA. We have completed our investigations and evaluations and hereby notify you of our planned action.

This course of action involves replacing the motor operators on the affected valves

' /-1050 and CV-1410) with LOCA qualified, submersible operators.

Thes e operators have been ordered and will be installed during our first refuel-ing shutdown.

If you have any comments or questions concerning this action please con-tact us.

Ve truly yours W~

_fu William Cavanaugh II h!anager, Nuclear Se

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