ML072920555
| ML072920555 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 10/19/2007 |
| From: | Tam P NRC/NRR/ADRO/DORL/LPLIII-1 |
| To: | Scarpello M, Simpson S, Vasey B American Electric Power Co, Indiana Michigan Power Co |
| tam P, NRR/ADRO/DORL, 415-1451 | |
| References | |
| GL-07-001, TAC MD4318, TAC MD4319 | |
| Download: ML072920555 (2) | |
Text
From:
Peter Tam To:
Scarpello, Michael; Simpson, Sue; Vasey, Bob Date:
10/19/2007 2:37:12 PM
Subject:
D.C. Cook - Draft RAI on Response to GL 2007-01 (TAC MD4318, 9)
Bob:
The NRC staff has reviewed your 5/8/07 response to GL2007-01 re. inaccessible or underground power cable failures that disable accident mitigation systems or cause plant transients. The NRC staff has determined that the following additional information is necessary to clarify the information that you provided in the response. Please contact me to set up a conference to call discuss the following draft RAI questions:
(1) Licensee Event Report (LER) 50-315/98040-00 discussed a faulted underground cable due to aging of the cable. Please provide the information for the cable fault as requested in GL 2007-01, or justify why it is not within the scope of the GL.
(2) The licensee reviewed its cable routing to identify cables that could routinely be exposed to moisture. A licensee should not have excluded cable failures based on whether the cables were routinely exposed to moisture. All failures of underground or inaccessible cables are within the scope of the GL. Please confirm that the reported cable failure history included all cable failures. If D.C. Cook's response to GL 2007-01 excluded cable failures based on moisture exposure, please provide the data for each cable failure as requested in GL 2007-01.
Note that NRC provided additional guidance on how licensees should determine which cable failures are within the scope of GL 2007 01 in the NRC letter dated April 13, 2007, from Michael J. Case (NRC) to James H. Riley (Nuclear Energy Institute) (NRC Accession No. ML070940311).
The sole purpose of this e-mail is to prepare you and others for the proposed conference call.
This e-mail does not convey a formal NRC staff position, and does not formally request for additional information. During the conference call, we will discuss disposition options of the above draft questions, e.g., whether to issue them formally or not.
Peter S. Tam, Senior Project Manager Plant Licensing Branch III-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation e-mail: pst@nrc.gov Tel.: 301-415-1451 CC:
Audrey Klett; Jay Robinson Mail Envelope Properties (4718F958.BFC : 12 : 35330)
Subject:
D.C. Cook - Draft RAI on Response to GL 2007-01 (TAC MD4318, 9)
Creation Date 10/19/2007 2:37:12 PM
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PST@nrc.gov Recipients Action Date & Time aep.com Transferred 10/19/2007 2:37:45 PM mkscarpello (Michael Scarpello) rgvasey (Bob Vasey) sdsimpson (Sue Simpson) nrc.gov OWGWPO04.HQGWDO01 Delivered 10/19/2007 2:37:17 PM ALK1 CC (Audrey Klett)
Opened 10/19/2007 2:38:09 PM nrc.gov TWGWPO03.HQGWDO01 Delivered 10/19/2007 2:37:17 PM JER8 CC (Jay Robinson)
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