ML20126J762

Discusses Discrepancy Between Analyses Delay Time & Tech Spec Value for Unit 2 Found by NRC Reviewer in 800423 Reload Safety Analysis.Reload 4 SER Includes NRC Evaluation to Adjust for Discrepancy.No Further Branch Action Needed

ML20126J762
Person / Time
Site:	Peach Bottom
Issue date:	07/08/1980
From:	Riggs R Office of Nuclear Reactor Regulation
To:	Berlinger C Office of Nuclear Reactor Regulation
References
NUDOCS 8105050248
Download: ML20126J762 (1)

Text

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. JUL 8 1980 . l MENORANDlm FOR: C. Berlinger,. Acting Chief Operating Experience Evaluation Branch Division of Safety Technology

.FROM: R. Riggs, Operating Experience Evaluation Branch

$UBJECT: REACTOR PROTECTION SYSTEM (RPS) DELAY ~ TIME In accordance with the attached letter dated April 23, 1980; M. Cooney (Philadelphia Electric Company) to B. Grier (0!E). the Peach Botten Units 2 and 3 reload safety analyses were based on a RPS delay time of 50 milli-second. Centrary to the above letter, this discrepancy between the analyses delay time (50 millisecond) and the Tech Spec value (100 millisecond) was picked up by the NRC reviewer (R. Riggs) on the Peach Botton 2 Reload 4 submittal .

Discussions between the licensee MRC Project Manager (D. Verre111), and NRC reviewer (R. Riggs), and subsequent discussions with GE prompted the above letter. As a result of these discussions. the Peach Botton Unit 2 i Reload 4 SER included eer evaluation and ACPR allowance to adjust for this - k discrepancy. The 015-2 Branch Chief (T. Tppelite) and Peach Botton Project Manager were made aware that these conditions may exist at othez BWR facilities.

I am assuming that the PM's of the vereces BWR plants will have determined if any corrective action (pt adjustment) is required at other operating SWR's. i Therefort, no further action in the part of 0EER is required.

F R. Riggs Operating Experience Evaluation Branch j

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