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: 05000261/LER-1976-006, :on 760312,reevaluation of LOCA Analysis by Westinghouse Indicated Possible Inaccuracies in Prediction of Peak Clad Temp.Caused by Oversight of Effect of Steam Generator Tube Plugging ML20086D412
References
NUDOCS 8312010444
Download: ML20086D412 (1)

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i i-Caroeine Power & Ugn4 Comoony

- H B. ROBINSgt STEAM ELECTRIC PLANT Fost Office Box 790

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Hsich 15,1976

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". Mr. Norman C. Moseley, Director-3...

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Directorate of Regulatory Operations

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Nuclear Regulatory Coc: mission i

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Region II, Suite 818 S -

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

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Directorate of Regulator 7 Operationa

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1Buclear Regu.1.atory C.~::missian.

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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 ds.

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

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.benn reduced to 2.26 in acconlance with Westinghouse recoaanendations pending

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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.

j Youra.very trul 177 Jack B. McGirt, Manager II. B. Robinson SEG Plant RHC:ala

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