ML20125C134
| ML20125C134 | |
| Person / Time | |
|---|---|
| Issue date: | 11/25/1992 |
| From: | Salah S NRC OFFICE FOR ANALYSIS & EVALUATION OF OPERATIONAL DATA (AEOD) |
| To: | Rosenthal J NRC OFFICE FOR ANALYSIS & EVALUATION OF OPERATIONAL DATA (AEOD) |
| Shared Package | |
| ML20125C135 | List: |
| References | |
| AEOD-T92-09, AEOD-T92-9, NUDOCS 9212110061 | |
| Download: ML20125C134 (2) | |
Text
..' "
NOV 2 51992 MEMORANDUM FOR: Jack E. Rosenthal, Chief
= Reactor Operations Analysis Branch Division of Safety Programs Offiw for Analysis and Evaluation of Operational Data 1 FROM: Sagid Salah Reactoc Systems Section M and B&W Reactor Operations Analysis Branch Division of Safety Programs Office for Analysis and EvaluaHon of Operational Data
SUBJECT:
REVIEW OF MANUAL VALVE FAILURES The enclosed Technied Review of Manual Valve Failures is forwarded for your y information and consideration. l i -
Manur' valve failure data were obtained using the Nuclear Documents System (NUDOCS), sequence coding and search system (SCSS) and the nuclear plant reliability data system (NPRDS). The data obtained from NUDOCS and SCSS were not complete due to limitations in search strategies available. NPRDS provided a lar; amount of data, mostly about mechanical failures. To the extent oossible, human related failures
- were obtained with NUDOCS.
Using NPRDS, approximately 6200 failures were retrieved including 5 events considered important using AEOD screening criteria. Most of the NPRDS failures, wi*h a' few exceptions, were routine failures. Details of the review and evaluations are included in this report.
^
There does not appear to be a systematic or pervasive problem associated w ith r.canual valves. Therefore, additional < .dy does not seem warranted at this time.
Original Signed by:
I, 1 Sagid Salah 9212110061 921125 Reactor Systems Section E and B&W DDR ORG HEXC Reactor Operations Analysis Branch f Division of Safety Programs Office for Analysis and Evaluation gg 9 "
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Enclosure:
As stated '
080052 .. I Distribution: See attached A} .
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Jack E. Rosenthal Distribution:
PDR JRosenthal LSpessard RSavio, ACRS VChexal, EPRI
~ Central File EJordan KBrockman MTaylor, EDO AChaffee, NRR ROAB R/F Dross SRubin KRaglin,1TC SSalah TNovak PBaranowsky PLewis, INPO WJones VBenaroya HKaragiannis DQueener, NOAC