ML20086D412

Ro:On 760312,util Notified by Westinghouse of Possible Error in LOCA Analysis.Error Involves Oversight of Potential Effect of Steam Generator Tube Plugging.Limiting Valve of Fq Reduced to 2.26 Pending Further Investigation

ML20086D412
Person / Time
Site:	Robinson
Issue date:	03/15/1976
From:	Mcgirt J CAROLINA POWER & LIGHT CO.
To:	Moseley N NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20086D409	List: ML20086D412
References
NUDOCS 8312010444
Download: ML20086D412 (1)

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- .- Caroeine Power & Ugn4 Comoony *

- H B. ROBINSgt STEAM ELECTRIC PLANT . '.

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Hsich 15,1976 * .

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'  : Robinson Filo No. 2- 0-4-a-1. rl .:.

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". Mr. Norman C. Moseley, Director-

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. E Directorate of Regulatory Operations

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Nuclear Regulatory Coc: mission l

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230 Peachtree Street,. N. V. ,

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.)tlanta, Georgia 30303 1 ..,( . #-,3, ~ f 7. . 'y . ;

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'f Mr. John C." Davis, Acting Director -

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( Directorate of Regulator 7 Operationa [2; . L l'I

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Dear Sirs:

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.'cIn accordance with Section. 6.6.1.a of-the Facility Technical Specifications,

. sthe _foMoving Reportable Occurrenco ,,is promulgat 9ds .

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.(On March 12, 1976, Caroh Power and Light was notified by Westhghouse Tcf a possible error in the LOCA analysis. This error could have the effect Scf increasing the peak clad temperature during the "uorse case" loss of

.: coolant accident. The error involves the oversight ~ of the potential'~effect- J cf steam generator tube plugging.. As an intbrim action, the limiting value .

- O~idescribed in section 3.10.2 of the Technical Specifications has 2'or'F a -

.benn reduced to 2.26 in acconlance with Westinghouse recoaanendations pending '

" further inv.:.stigation..

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, .a - , 4 :. ,., i This finding constitutes a reportable occurrence as defined in Technical i

- Specification 6.9.2.a.9 and was reported by telephone to Mr. Dick Lewis _.of.___..

RRC, Atlanta,on March 15, 1976, and Mr. H. R. Banks of-Garolina Power and Light, Raleigh, on March 13,.1SP/6. ,

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,, Jack B. McGirt, Manager II. B. Robinson SEG Plant RHC:ala -

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PDR ADOCK 05000261 .

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