Letter Sequence Draft RAI |
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MONTHYEARML0726900832001-09-21021 September 2001
Tech Spec Page for Amendment 281 Regarding Reactor Trip on Low Turbine Oil Pressure
Project stage: Other
ML0626905002006-09-15015 September 2006
Technical Specification Change for Reactor Trip on Low Turbine Oil Pressure
Project stage: Other
ML0633504122006-12-0101 December 2006
Draft RAI on Amendment Re Turbine Control System Fluid Oil Pressure
Project stage: Draft RAI
ML0700401882007-01-0303 January 2007
Request for Conference Call Re. Proposed Amendment
Project stage: Other
ML0701104412007-01-11011 January 2007
Additional Draft RAI Re. Proposed Amendment
Project stage: Draft RAI
ML0712200812007-04-20020 April 2007
Response to Request for Additional Information Regarding Technical Specification Change for Reactor Trip on Low Turbine Oil Pressure
Project stage: Response to RAI
ML0710705942007-04-20020 April 2007
Request for Additional Information Regarding Proposed Amendment Regarding Turbine Control Fluid Oil System Modification
Project stage: RAI
ML0713506602007-05-15015 May 2007
Second Round of Draft RAI on the 9/15/07 Amendment Request
Project stage: Draft RAI
ML0717202192007-06-28028 June 2007
Request for Additional Information for Proposed Amendment Re. Reactor Trip on Turbine Oil Pressure
Project stage: RAI
ML0719803932007-07-0606 July 2007
Technical Specification Change for Reactor Trip on Low Turbine Oil Pressure Request for Additional Information
Project stage: Request
ML0722002522007-07-25025 July 2007
Technical Specification Change for Reactor Trip on Low Turbine Oil Pressure Request for Additional Information
Project stage: Request
ML0721806392007-09-21021 September 2007
Issuance of License Amendment 281 Regarding Reactor Trip on Low Turbine Oil Pressure
Project stage: Approval
2007-04-20
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Text
From: Peter TamTo:Scarpello, Michael; Simpson, Sue; Vasey, BobDate: 05/15/2007 10:14:31 AM
Subject:
D.C. Cook Unit 2 - Second Round of Draft RAI on the 9/15/06 AmendmentRequest (TAC MD3161)
Bob:
We have reviewed your 4/20/07 response and determined that we need additional information(see below) to complete our review. Consistent with our review process set forth in NRR Office Instruction LIC-101, Rev. 3, we would like to first discuss this information need with you in a conference call: (1) The response to Request 2 states that out-of-tolerance is defined as "exceeding theband established around a desired value...." However, the licensee has not defined how thisband is established. Provide the information about what uncertainties are included in the out-of-tolerance band, basis for their inclusion, and how it is calculated.(2)The response to Request 2 states that "An as-found condition that exceeds thecalibration tolerance......." However, the licensee has not defined how the calibration toleranceis determined. Provide the information about the uncertainties included in the calibration tolerance band, basis for their inclusion, and how it is calculated.(3)The response to Request 2, on page 3, first full paragraph provides the example of Unit1 calibration tolerance but did not state that the same value has been used for Unit 2 also and how it was determined. Provide the calibration tolerance band for Unit 2. (4)The response to Request 2, on page 3, first full paragraph states that the"out-of-Tolerance" evaluation may include changes to the acceptance criteria, changes to switch design or calibration method (including the setpoint value), or the replacement of poorly performing components, but did not provide any detail on how it is determined and who makes that determination and how soon this evaluation is completed. Provide the missing information.This e-mail aims solely to prepare you and others for the proposed conference call. Itdoes not formally request for additional information, and does not convey any formal NRC staff position
.Peter S. Tam, Senior Project ManagerPlant Licensing Branch III-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulatione-mail: pst@nrc.gov Tel.: 301-415-1451 CC:Garg, Hukam; Jin-Sien GuoMail Envelope Properties(4649C047.51D : 12 : 35330)
Subject:
D.C. Cook Unit 2 - Second Round of Draft RAI on the 9/15/06Amendment Request (TAC MD3161)Creation Date05/15/2007 10:14:31 AMFrom: Peter TamCreated By:PST@nrc.gov RecipientsActionDate & Timeaep.comTransferred05/15/2007 10:15:14
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