ML092010070
| ML092010070 | |
| Person / Time | |
|---|---|
| Site: | Oyster Creek |
| Issue date: | 01/12/2009 |
| From: | Modes M Engineering Region 1 Branch 1 |
| To: | Richmond J Engineering Region 1 Branch 1 |
| References | |
| FOIA/PA-2009-0070 | |
| Download: ML092010070 (3) | |
Text
ýONS Nathan Lafferty From:
Michael Modes Sent:
Monday, January 12, 2009 2:08 PM To:
John Richmond
Subject:
RE: UT Draft Write-up for OC Yes that is ok.
No we do not have to explain in more detail.
From: John Richmond Sent: Monday, January 12, 2009 2:07 PM To: Michael Modes
Subject:
UT Draft Write-up for OC Michael, Is this ok, or do we need to explain in more detail?
L (b)(5)
From: Michael Modes Sent: Monday, January 12, 2009 10:26 AM To: John Richmond
Subject:
RE: Reason For Fiberglass in the Containment Annulus at Oyster Creek I was really close to establishing the Part 50 documented basis for the drywell examinations, the ACRS and hearing files contain all the relevant historical documents. We went into a great deal of hjstorical detail on the very same subject when 1-hey dumped the iolv bottle-... did they violate a Part 50 recuirmentL (b)(5)
L__
(b)(5)
I am directed to focus on my feeders.
Therefore:
(b)(5)
I will now move on to the other two feeders: Bellows, and Fatigue.
From: John Richmond Sent: Monday, January 12, 2009 9:56 AM To: Michael Modes; Harold Gray
Subject:
RE: Reason For Fiberglass in the Containment Annulus at Oyster Creek I continue to learn! thanks for the update.
From: Michael Modes Sent: Monday, January 12, 2009 9:12 AM To: Harold Gray
&*xan In INS wec was deleted i oe lon withl the Freedom of Informatdon Act 1
i+APA *_m
Cc: John Richmond
Subject:
Reason For Fiberglass in the Containment Annulus at Oyster Creek Follow up to our recent conversation.
This is from an '87 calculation performed to determine drywell integrity. I found it while researching an unresolved item proposed by John Richmond and Rich Conte.
"A two-inch gap was formed with fiberglass between elevations 12' 3" and 23' 6". Above 23' 6" a three-inch gap was formed with Fire-D. The gap depths were established by design to permit unimpeded expansion of the drywell shell during any design condftion. The materials were selected to resist crushing by the concrete during pouring but allowing crushing by induced vessel expansion."
2
Received: from R1CLSTRO1.nrc.gov ([148.184.99.7]) by R1 MS01.nrc.gov
([148.184.99.10]) with mapi; Mon, 12 Jan 2009 14:08:09 -0500 Content-Type: application/ms-tnef; name="winmail.dat" Content-Transfer-Encoding: binary From: Michael Modes <MichaeI.Modes@nrc.gov>
To: John Richmond <John.Richmond@nrc.gov>
Date: Mon, 12 Jan 2009 14:07:32 -0500
Subject:
RE: UT Draft Write-up for OC Thread-Topic: UT Draft Write-up for OC Thread-Index: AQHJdL+v/xQVf76p8Oa/ALOcnusOXY9WojOAgAAE2w2AAEBMsIAAATE8 Message-ID: <2856BC46F6A308418F033D973BBOEE72AA60EF77A3@R1CLSTR01.nrc.gov>
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