ML080880475

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Additional Question on the Proposed Recirculation Riser Differential Pressure Amendment
ML080880475
Person / Time
Site: Monticello Xcel Energy icon.png
Issue date: 03/27/2008
From: Tam P
NRC/NRR/ADRO/DORL/LPLIII-1
To: Arias J, Blake T, Loeffler R
Nuclear Management Co
References
TAC MD6864
Download: ML080880475 (2)


Text

From: Peter Tam To: Jesus Arias; Rick Loeffler; Timothy Blake Date: 03/27/2008 4:44:00 PM

Subject:

Monticello - Additional Question on the Recirc. Riser Diff. Pressure Amendment (TAC MD6864)

Rick:

Our review of your 9/25/07 amendment request is ongoing. One of our reviewers, Tony Nakanishi, has written a question. Please add this question to the other 3 that I have transmitted to you by my 3/18/08 e-mail (Accession No. 080790515):

The small break analysis was performed assuming an initial core flow of 100% of rated core flow. Top peaked power shape was explicitly assumed for this analysis. The large break analysis is based on previously performed analysis in GENE-J1103878-09-02P. Please justify, quantitatively, the effect of lower and higher initial core flows (i.e. MELLLA and ICF) in conjunction with the top peaked power shape on both small and large break LOCA?

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: Leonard Ward; Tony Nakanishi Mail Envelope Properties (47EC0710.2B9 : 12 : 35330)

Subject:

Monticello - Additional Question on the Recirc. Riser Diff. Pressure Amendment (TAC MD6864)

Creation Date 03/27/2008 4:44:00 PM From: Peter Tam Created By: PST@nrc.gov Recipients Action Date & Time nmcco.com Transferred 03/27/2008 4:44:43 PM Jesus.Arias (Jesus Arias)

Richard.Loeffler (Rick Loeffler) tmblake (Timothy Blake) nrc.gov TWGWPO01.HQGWDO01 Delivered 03/27/2008 4:44:09 PM TTN1 CC (Tony Nakanishi) Opened 03/27/2008 4:44:13

PM nrc.gov TWGWPO04.HQGWDO01 Delivered 03/27/2008 4:44:09 PM LWW CC (Leonard Ward)

Post Office Delivered Route nmcco.com TWGWPO01.HQGWDO01 03/27/2008 4:44:09 PM nrc.gov TWGWPO04.HQGWDO01 03/27/2008 4:44:09 PM nrc.gov Files Size Date & Time MESSAGE 1633 03/27/2008 4:44:00 PM Options Auto Delete: No Expiration Date: None Notify Recipients: Yes Priority: Standard ReplyRequested: No Return Notification: None Concealed

Subject:

No Security: Standard To Be Delivered: Immediate Status Tracking: Delivered & Opened