ML20024E608
| ML20024E608 | |
| Person / Time | |
|---|---|
| Site: | FitzPatrick  |
| Issue date: | 08/03/1983 |
| From: | Harold Denton Office of Nuclear Reactor Regulation |
| To: | Heltemes C NRC OFFICE FOR ANALYSIS & EVALUATION OF OPERATIONAL DATA (AEOD) |
| Shared Package | |
| ML20023D765 | List: |
| References | |
| NUDOCS 8308150399 | |
| Download: ML20024E608 (2) | |
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/ Central ~ File BSnyder NRC PDR DPickett M 3 - 1983 L PDR-LBerry/FMi raglia NSIC (YT 83-171)
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MEMORANDUM FOR:
C. J. Hel temas. Jr.. Director PPAS KBowman Office for Analysis and Evaluation TSpets of Operational Data RMattson RVollmer FROM:
Harold R. Denton, Director HThompson Office of Nuclear Reactor Regulation NGrace S(BJECT:
OPERABILITY OF TARGET ROCK SRVs' IN THE SAFETY MDOE WITH PIL0T VALVE LEAKAGE i
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Your memorandum on the above subject dated May 18, 1983 concluded that pilot valve leak rates above 200 pounds per hour may challenge the operability of Target Rock two-stage safety / relief valves (SRVs) in the safety mode.
It was recommended that the NRR activities related to the SWR Owners Group y
setpoint drift program for two-stage SRVs be az$ ended to encompass this concern and, if this challenge is confirmed, provide appropriate regulatory guidance to the affected BWR licensee.
We initially informed your staff that the NRR response to this concern could be prepared by August 15, 1983. However, the Mechanical Engineering Branch / Division of Engineering currently anticipates receiving the necessary manufacturer supplied data in a time frame that would not enable them to provide a full response until September 15, 1983.
Due to the extended time since you originally made your recommendations, we consider it appropriate to infona you that your concerns are being i
actively pursued.
Odgical Signed Bv L & Case Harold R. Denton, Director Office of Nuclear Reactor Regulation f
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MEMORANDUM FOR:
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FROM:
\\ Harold R. Denton, Dire.ctor ffice of Nuclear Reactor R0gulation StBJECT:
OPERABILITY OF TARGET ROCK SRVs,tM THE SAFETY MDE
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WITH PILOT VALVE LEAKAGE
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Your memorandum on the abnve subject dated May 18, 1983 concluded that pilot valvo leak rates above 200 pounds per hour may challenge thet operability of s
Target Rock two-stage safety / relief valves (SRVs) in the safety mode.
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was reconsnanded that the NRR' activities related to the BWR Owners Group setpoint drift program for two-stage SRVs be expanded to encompass this concern and, if this challenge 'is confirmed, provitia appropriate regulatory guidance to the affected BWR licensee.
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We initially informed your staff that the NRR response to this concern V
could be prepared by August 15, 1983. However, the Mechanical Engineering i
Branch / Division of Engineering currently anticipates receiving the necessary WW
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a full response until September 15, 1983.
Due to the extended time since you originally made your recommendations, we consider it appropriate to inform you that your concernr, are being actively pursued.
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Harold R. Denton, Director Office of Nuclear Reactor Regulation DISTRIBUTION Central File T. Speis R. Bosnak i
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