ML13225A279
| ML13225A279 | |
| Person / Time | |
|---|---|
| Site: | Watts Bar, Sequoyah  |
| Issue date: | 08/13/2012 |
| From: | Lingham S Office of Nuclear Reactor Regulation |
| To: | Sean Meighan Division of Operating Reactor Licensing |
| References | |
| FOIA/PA-2013-0139 | |
| Download: ML13225A279 (2) | |
Text
Poole, Justin 4/?
From:
Lingam, Siva I Sent:
Monday, August 13,2012 4:24 PM To:
Meighan, Sean Cc:
Quichocho, Jessie; Wilson, George; Poole, Justin; Hon, Andrew
Subject:
RE: RPV Material Issue From: Mackaman, Clyde Douglas rmailto:cdmackaman*tva.goyv Sent: Monday, August 13, 2012 4:21 PM To: Lingam, Siva Cc: Lee, Henry; Proffitt, James W Jr; Guinn, Donna Kay; Robinson, Anne E
Subject:
FW: RPV Material Issue
- Siva, We now have evidence that Watts Bar Units 1 and 2 also have reactor vessels manufactured by Rotterdam Dockyard Company.
Clyde Mackaman TVA Corp. Licensing 423-751-2834 From: Mackaman, Clyde Douglas.
Sent: Monday, August 13, 2012 1:52 PM To: 'Lingam, Siva' Cc: Lee, Henry; Proffltt, James W Jr
Subject:
RE: RPV Material Issue
- Siva, I received your emails both at the same time at about 1:25 PM. As Indicated in our phone conversation regarding this issue, Section 5.4.2, first sentence (Page 5.4-2), of the SQN UFSAR states that "The reactor vessel manufactured by DeRotterdame Drodgdak Mattschappu N.V. (The Rotterdam Dockyard Company) is cylindrical with a welded hemispherical bottom head and a removable, bolted flanged and gasketed, hemispherical upper head." So, to answer your question, Yes, the Sequoyah Units 1 and 2 reactor vessels are forged by Rotterdam Dockyards.
Clyde Mackaman TVA Corp. Licensing 423-751-2834 From: Lingam, Siva Fmailto:Siva.Linoamanrc.gov]
Sent. Monday, August 13, 2012 12:13 PM To: Mackaman, Clyde Douglas Cc: Quichocho, Jessie; Meighan, Sean
Subject:
RE: RPV Material Issue
At your request, I am resending the e-mail.
Per our telephone conversation, attached please find the related information.
Please verify if Sequoyah 1 and 2 Reactor Pressure Vessels were forged by Rotterdam Droogdok Maatschappij (also referred to as Rotterdam Dockyards or RDM). The RPV forgings may have been welded together by another company such as B&W. NRC is interested in who forged the parts Please respond by COB today. Thank you and sorry for the short notice!
From: Mackaman, Clyde Douglas [mallto:cdmackaman&tva.gov]
Sent: Monday, August 13, 2012 11:59 AM To: Lingam, Siva
Subject:
RPV Material Issue
- Siva, I still did not receive your email. Please try to attach the information in a response to this email.
Clyde 2