ML20209G560
| ML20209G560 | |
| Person / Time | |
|---|---|
| Site: | Brunswick  |
| Issue date: | 08/29/1985 |
| From: | Ashe F NRC OFFICE FOR ANALYSIS & EVALUATION OF OPERATIONAL DATA (AEOD) |
| To: | Seyfrit K NRC OFFICE FOR ANALYSIS & EVALUATION OF OPERATIONAL DATA (AEOD) |
| Shared Package | |
| ML20209G564 | List: |
| References | |
| AEOD-T509, NUDOCS 8509190527 | |
| Download: ML20209G560 (2) | |
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l P D TL August 29, 1985 MEPORANDUM FOR:
Karl V. Seyfrit, Chief AE00/T509 Reactor Operations Analysis Branch Office for Analysis and Evaluation of Operational Data THRU:
Matthew Chiramal Section Chief Engineering Section Reactor Operations Analysis Branch Office for Analysis and Evaluation of Operational Data FROM:
Frank Ashe, Engineer Engineering Section Reactor Operations Analysis Branch Office for Analysis and Evaluation of Operational Data
SUBJECT:
INADEQUATE SURVEILLANCE TESTING PROCEDURES FOR DEGRADED V0LTAGE AND UNDEPVOLTAGE RELAYS ASSOCIATED WITH 4160 VOLT EMERGENCY BUSES b
i The enclosed Technical Review Report is forwarded for your information. This report provides information concerning inadequate testing procedures and i
practices for degraded voltage and undervoltage relays associated with 4160 volt emergency buses. The safety concern regarding this area-is that such procedures and practices could result in component failures which are not detected during periodic testing. Also, since the same testing procedures and practices are used_for redundant trains, such component _ failures could exist in redundant trains.
The situation described above clearly has significant safety implications.
However, based on a review of a set of related events obtained from the Sequence Coding and Search System, it does not appear that this concern is applicable to nuclear stations in general, although it may apply to certain stations.
In view of this result, we believe that further AE00 actions regarding this issue are not warranted at this time. However, should i
8509190527 850829 PDR ADOCK 05000324 i
S PDR l
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_ =.
~ Karl V. Seyfrit -,
additional events or situations similar to those for the Brunswick Station be identified, it is suggested that further AE0D actions regarding this issue be undertaken at that time.
h Frank Ashe, Engineer Engineering Section Reactor Operations Analysis Branch Office for Analysis and Evaluation of Operational Data c
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Enclosure:
As stated i
Distribution PDR "
FAshe 1
MChiramal KSeyfrit
- TIppolito CHeltemes I
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ROAB F, A, SC:ROAB Ekke C:ROAb-Dn:AE FAshe:Jz MChiramal MC-KSeyfrit TIppo n te -
08/i6/85 08/ib/85 08/20/85 08/pff85 i -
I i
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