Letter Sequence Draft Other |
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MONTHYEARML0616004492006-05-31031 May 2006
Application for Amendment to Revise Technical Specification Surveillance Requirement for Channel Calibration of Overtemperature Differential Temperature and Overpower Differential Temperature Reactor Protection System Functions
Project stage: Request
ML0616003742006-06-16016 June 2006
Quick Turnaround for Review of a Proposed Amendment
Project stage: Approval
ML0617900742006-06-26026 June 2006
Draft RAI for Proposed Amendment - RTD Modification for DC Cook 1
Project stage: Draft RAI
ML0619804782006-07-14014 July 2006
Draft Question Re Proposed RTD Bypass Amendment
Project stage: Draft Other
ML0624803282006-10-0606 October 2006
D.C. Cook, License Amendment 296, Regarding Elimination of the Resistance Temperature Detector (RTD) Bypass Loop
Project stage: Approval
ML0628303132006-10-0606 October 2006
D.C. Cook, Tech Spec Pages for Amendment 296, Regarding Elimination of the Resistance Temperature Detector (RTD) Bypass Loop
Project stage: Other
2006-06-16
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[Table view] |
Text
From: Peter TamTo:Scarpello, Michael; Waters, JoeDate: 07/14/2006 11:13:36 AM
Subject:
D. C. Cook Unit 1: Draft Question re. Propsoed RTD Bypass Amendment(TAC MD2106)Michael, Joe:
This is regarding your 5/31/06 application for amendment. We have developed the followingdraft question, and would like to discuss it with you in a conference call: The amendment request involves the removal of the resistance temperature detector (RTD)bypass manifolds. This will affect the RTD response time, which is used in the OTT tripfunction. The OTT trip initiates automatic protective actions to mitigate the consequences ofthe following events, and therefore would be affected by the change in RTD response time:1. Loss of electrical load/turbine trip2. Uncontrolled rod cluster control assembly (RCCA) bank withdrawal at power
- 3. Chemical Volume Control System (CVCS) malfunction that results in a decrease in the boron concentration in the reactor coolant
- 4. Inadvertent opening of a pressurizer safety or relief valveFor each event, show that OTT will continue to provide adequate protection from departurefrom nucleate boiling following the requested change in RTD response time.This e-mail aims solely to prepare you and others for the requested conference call. Thise-mail does not convey a formal NRC staff position, and does not formally request for additional information. We will discuss disposition of this question in the requestedconference call.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:Miranda, Samuel; Nakoski, John; Somers, ChristopherMail Envelope Properties(44B7B4A0.E11 : 12 : 35330)
Subject:
D. C. Cook Unit 1: Draft Question re. Propsoed RTD BypassAmendment (TAC MD2106)
Creation Date 07/14/2006 11:13:36 AMFrom: Peter TamCreated By:PST@nrc.govRecipientsActionDate & Timeaep.comTransferred07/14/2006 11:14:30
AM jrwaters (Joe Waters) mkscarpello (Michael Scarpello) nrc.gov TWGWPO01.HQGWDO01Delivered07/14/2006 11:13:43
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AM SXM1 CC (Samuel Miranda)Opened07/14/2006 1:37:26
PMnrc.gov TWGWPO02.HQGWDO01Delivered07/14/2006 11:13:37
AM CMS3 CC (Christopher Somers)Opened07/14/2006 11:13:47
AMPost Office DeliveredRouteaep.com TWGWPO01.HQGWDO0107/14/2006 11:13:43 AMnrc.gov TWGWPO02.HQGWDO0107/14/2006 11:13:37 AMnrc.govFilesSizeDate & Time MESSAGE268207/14/2006 11:13:36 AMOptions Auto Delete:
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