Letter Sequence Draft RAI |
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TAC:MD6864, Clarify Application of Setpoint Methodology for LSSS Functions (Approved, Closed) |
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MONTHYEARL-MT-07-055, License Amendment Request: Revision to the Allowable Value and Channel Calibration Surveillance Interval for the Recirculation Riser Differential Pressure - High Function2007-09-25025 September 2007
License Amendment Request: Revision to the Allowable Value and Channel Calibration Surveillance Interval for the Recirculation Riser Differential Pressure - High Function
Project stage: Request
ML0727506332007-10-31031 October 2007
(MNGP) - Request for Withholding Information from Public Disclosure
Project stage: Withholding Request Acceptance
ML0807905152008-03-18018 March 2008
Draft RAI on Proposed Amendment Re Recirculation Riser Differential Pressure
Project stage: Draft RAI
ML0808804752008-03-27027 March 2008
Additional Question on the Proposed Recirculation Riser Differential Pressure Amendment
Project stage: Other
ML0819302482008-07-10010 July 2008
Draft RAI Questions Recirculation Riser Differential Pressure Amendment, Instrumentation
Project stage: Draft RAI
L-MT-08-045, Response to Requests for Additional Information for License Amendment Request: Revision to the Allowable Value and Channel Calibration Surveillance Interval for the Recirculation Riser Differential Pressure - High Function2008-09-0808 September 2008
Response to Requests for Additional Information for License Amendment Request: Revision to the Allowable Value and Channel Calibration Surveillance Interval for the Recirculation Riser Differential Pressure - High Function
Project stage: Response to RAI
L-MT-08-061, Response to 09/26/2008, Request for Additional Information for License Amendment Request: Revision to the Allowable Value and Channel Calibration Surveillance Interval for the Recirculation Riser Differential Pressure - High Function2008-11-0606 November 2008
Response to 09/26/2008, Request for Additional Information for License Amendment Request: Revision to the Allowable Value and Channel Calibration Surveillance Interval for the Recirculation Riser Differential Pressure - High Function
Project stage: Request
ML0830106242008-11-12012 November 2008
Letter to Determine Withholding Proprietary Information from Public Disclosure
Project stage: Other
ML0902800532009-01-20020 January 2009
Response to November 14, 2008, Request for Additional Information for License Amendment Request: Revision to the Allowable Value and Channel Calibration Surveillance Interval for the Recirculation Riser Differential Pressure - High Function
Project stage: Request
L-MT-09-007, Response to November 14, 2008, Request for Additional Information for License Amendment Request: Revision to the Allowable Value and Channel Calibration Surveillance Interval for the Recirculation Riser Differential Pressure - High Funct2009-01-20020 January 2009
Response to November 14, 2008, Request for Additional Information for License Amendment Request: Revision to the Allowable Value and Channel Calibration Surveillance Interval for the Recirculation Riser Differential Pressure - High Function
Project stage: Request
ML0905002592009-03-0303 March 2009
Letter to Approve Request to Withhold Document Containing Proprietary Information from Public Disclosure
Project stage: Other
L-MT-09-041, Supplement to License Amendment Request: Revision to the Allowable Value and Channel Calibration Surveillance Interval for the Recirculation Riser Differential Pressure - High Function2009-04-0202 April 2009
Supplement to License Amendment Request: Revision to the Allowable Value and Channel Calibration Surveillance Interval for the Recirculation Riser Differential Pressure - High Function
Project stage: Supplement
ML0830406082009-04-0707 April 2009
Issuance of Amendment No. 161 Regarding Recirculation Riser Differential Pressure
Project stage: Approval
2008-03-27
[Table View] |
Text
From:
Peter Tam Accession No. ML080790515 To:
Arias, Jesus; Loeffler, Rick; Blake, Timothy Date:
03/18/2008 4:29:11 PM
Subject:
Monticello - Draft RAI re. proposed amendment on recirculation riser diff.
pressure (TAC MD6864)
Rick:
We are reviewing your application dated 9/25/07 for the subject amendment. Our reviewer, Leonard Ward, has written the following draft RAI questions on the thermal hydraulic aspects of the proposed amendment. Please set up a conference call with me to discuss these draft questions. We plan to issue these questions formally around 4/4/08:
(1) For the LPCI system in the residual heat removal operating mode, please address the potential for a LOCA with certain postulated single failures in electrical distribution that could leave the plant vulnerable regardless of offsite power status. For loop select logic plants operating in this mode, for example, the loop select logic mechanism could allow a single active failure (i.e., an LPCI injection valve in the path to the intact recirculation loop) to disable the entire LPCI system, placing dependence on the core spray system to accomplish the low pressure core cooling function. Please explain.
(2) Please provide the axial power shape used in the SBLOCA re-analysis for the limiting break. What is the PLHGR applied to the peak power position for this shape?
(3) For the limiting SBLOCA, does the PCT terminate due to top down cooling (i.e.,
counter-current flow) into the hot bundle and hot rod from the core spray? Please explain.
The solely purpose of this e-mail is to prepare you and others for the proposed conference call.
This e-mail does not convey an NRC staff position, and does not formally request for additional information.
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:
Anthony Mendiola; Leonard Ward Mail Envelope Properties (47E02617.E7C : 12 : 35330)
Subject:
Monticello - Draft RAI re. proposed amendment on recirculation riser diff. pressure (TAC MD6864)
Creation Date 03/18/2008 4:29:11 PM From:
Peter Tam
Created By:
PST@nrc.gov Recipients Action Date & Time nmcco.com Transferred 03/18/2008 4:29:49 PM Jesus.Arias (Jesus Arias)
Richard.Loeffler (Rick Loeffler) tmblake (Timothy Blake) nrc.gov TWGWPO01.HQGWDO01 Delivered 03/18/2008 4:29:21 PM AJM CC (Anthony Mendiola)
Opened 03/19/2008 7:17:27 AM nrc.gov TWGWPO04.HQGWDO01 Delivered 03/18/2008 4:29:20 PM LWW CC (Leonard Ward)
Post Office Delivered Route nmcco.com TWGWPO01.HQGWDO01 03/18/2008 4:29:21 PM nrc.gov TWGWPO04.HQGWDO01 03/18/2008 4:29:20 PM nrc.gov Files Size Date & Time MESSAGE 2676 03/18/2008 4:29:11 PM Options Auto Delete:
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