ML19325D652
| ML19325D652 | |
| Person / Time | |
|---|---|
| Site: | Brunswick  |
| Issue date: | 10/18/1989 |
| From: | Ellen Brown NRC OFFICE FOR ANALYSIS & EVALUATION OF OPERATIONAL DATA (AEOD) |
| To: | Rosenthal J NRC OFFICE FOR ANALYSIS & EVALUATION OF OPERATIONAL DATA (AEOD) |
| Shared Package | |
| ML19325D653 | List: |
| References | |
| TASK-AE, TASK-E908 AEOD-E908, GL-89-13, NUDOCS 8910250235 | |
| Download: ML19325D652 (1) | |
Text
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MEMORANDUM FOR: Jack E. Rosenthal, Chief AE0D/E908 Reactor Operations Analysis Branch p
Division of Safety Programs, AE0D THRU:
Matthew Chiramal, Chief Engineering Section i
Reactor Operations Analysis Branch Division of Si.fety Programs, AEOD TROM:
Earl J. Brown Engineering Section Reactor Operations Analysis Branch Division of Safety Programs, AEOD l.
SUBJECT:
EXCESSIVE VALVE BODY EROSION AT BRUNSWICK i:
A copy of a technical review report on excessive valve body erosion at Brunswick J
is enclosed for your informatien.
The report indicates there is a broad scope of erosion related problems that could have an adverse impact on safety related system operation or availability.
The problems include cavitation induced valve body erosion, valve assembly degradation due to vibration, piping support damage due to vibration, piaing erosion downstream of throttled valves, severe degradation of pumps in tie service water system and RHR service water system low flow related damage to pumps in. other systems, and corrosion / erosion fouling that may adversely impact heat transfer capability of service water system heat exchangers or piping rather than pump or valve operability.
The industry action by the BWR owners group will cover " target" valves, but not pumps. Thus, it a) pears that low flow dcmage mechenisms for pumps may not be adequately covered >y either the BWR owners group or Generic Letter 89-13 for Service Water Systems.
IA Earl J. Brown Engineering Section Reactor Operations Analysis Branch Division of Safety Programs, AE00
Enclosure:
As-stated cc w/ enclosure:
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