ML17309A438

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Forwards AEOD/T904, Design Deficiency of Safety Injection Block Switch. Licensee Decision to Correct Existing Scheme by Installing Two Selector Switches W/One Switch for Each Train Noted
ML17309A438
Person / Time
Site: Ginna, Point Beach  
Issue date: 04/18/1989
From: Mazumdar S
NRC OFFICE FOR ANALYSIS & EVALUATION OF OPERATIONAL DATA (AEOD)
To: Rosenthal J
NRC OFFICE FOR ANALYSIS & EVALUATION OF OPERATIONAL DATA (AEOD)
Shared Package
ML17309A437 List:
References
AEOD-T904, NUDOCS 9002150203
Download: ML17309A438 (2)


Text

a APR 18 1989 THRU:

FROM:

Matthew Chiramal, Chief Engineering Section Reactor Operations Analysis Branch Division of Safety Programs Office for Analysis and Evaluation of Operational Data Subinoy Mazumdar, Electrical Engineer Engineering Section Reactor Operations Analysis Branch Division of Safety Programs Office for Analysis and Evaluation of Operational Data t".EHORANDUH FOR:

Jack E. Rosenthal, Chief Reactor Oper ations Ana lysi s Branch Division of Safety Programs Office for Analysis and Evaluation of Operational Data 0 ISTR I B IT ION PDR ROAB R/F DSP R/F SMazumdar HChiramal KBlack HWi 1 1 iams VBenaroya TNovak WLanning CHeltemes EJordan BBrady HTaylor SUBJECT'ESIGN DEFICIENCY OF SAFETY INOECTION BLOCK SWITCH Enclosed is our Technical Review report on design deficiency of safety injection (SI) block switch used in Point Beach Nuclear Plant, Unit l.

In the existing scheme only one "block/unblock" manual selector switch is used for both SI trains.

The licensee has decided to correct the existing scheme by installing two selector

switches, one for each train.

Westinghouse has agreed to inform the other utilities that may have similar problem.

No additional AEOD action is recommended at this stage, though we need to keep ourselves abreast with the close-out of this issue'.

Original signed S7

Enclosure:

As stated Subinoy Hazumdar, Electrical Engineer Engineering Section Reactor Operations Analysis Branch Division of Safety Programs Office for Analysis and Evaluation of Operational Data ROAB:DSP:AEOD SMuzumdar:as 4//g/89 ROAB:DSP:AEOD Mchiramai) 4/((/89 R

B:DSP:AEOD JRosenthal 4/f

/89 9002i50203 900202

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PDR ADOCH, 05000244' PDRL