ML102940095
| ML102940095 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 04/13/2010 |
| From: | Sabisch A NRC/RGN-II |
| To: | Conte R Division of Nuclear Materials Safety I |
| References | |
| FOIA/PA-2010-0334 | |
| Download: ML102940095 (3) | |
Text
To:
Conte, Richard
Subject:
RE: AFW Buried Piping Issue at Oconee?
The p'iping here at Oconee is in fact safety-related and resulted in the SSF being declared inoperable while repairs were beinig ~peifotmed. 'The leak itself was fairly small bUt~the analysls~showed considerable degradation in the area of the leak; iLe., thinning in the surrounding wall.
From;ý Conte, RidIch-r Sent; Tuesday,-April 13, 2010 9:52 AM To: 8roWn,: Michael; Sabisch; Andrewi; OHar~a,, Timothy Cc: King, Mark; Lupold Tioh;Cso rg;Hris oet ine, Leonard; Burrltt, Arthur Subject-RE: AFW Burled Piping Issue at Oconee?
Andrew if you don't mind me asking?
Outside of Scope We are trying to find out if Salem is was the worst case in term of actually effecting operability of a safety related system buried.
O-utside of scope Salem-seems to be challenging this statement but there is a Finite, Element Analysis that may support or deny this statement - more to come.
From: Brown, Michael Sent., Tuesday, April 1,2010 8:57 AM To: Conte, Richard Cc* K.Ing,,Mark
Subject:
FW: AFW Burled Piping Issue at Oconee?
Here you goRich, Outside of scope
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k-.ocoiele - AFW through wall leak on buried piping
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Salem'-, Bow mm wall thickess Let me know your thoughts.
M ie nformemanthlo7 vmi~r zzx.a delsted in Exetptorts 4' FOi~i~J.
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s en sday, April,13, 2010 8:49 AM To: BrownMlichael
Subject:
RE:, AFW Buried Piping Issue at Oconee?
Outside of Scope
~
- , j Andy Andrew T. Sabisch:
U.S. Nu~clear Regulatory Commission Senior ResidentIdsnpector Oconee Nucleai Station 7812B Rocester Highwa Seneca SC 29672 (0)864-885-3001 1(C)((6 From: B`rbiwn', Mi ch a 61l SentM Moiday, April2,-1 0 4:33 PM To: BartleyJonathan; Rapp, Curtis; Sabisch, Andrew; Riggs, Eric Subje66tAFW Buried Piping issue at Oconee?
Jonathan et al, My name is Mike Brown and I work in the OpE Branch in HQ. Salem Unit 1 recently discovered that substantial portions of their AFW piping that is buried had degraded to less than rrequired minimum wall thickness.
During the conference call, one of the participants mentioned that they thought Oconee had a similar issue sometime in the past. I've searched all the OpE I can find and have not located anything.
Are you aware of any issues at Oconee where their AFW piping that is buried (or any other safety related piping that' is budýid) had degraded to less than minimurn wall thickness?
Any help' isappreciated. 1 wouldn't wastedtime researching this, i just Was interested to know if you are aware of anything on this issue.
- Thanks, Mike Mike Brown Reactor Systems Engineer NRRIDIRS/IOEB email - *ichaelbrOwn@nrcgov phon (6 114D91 cell -
LP office O-7E11 3