ML090880001

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Additional Draft RAI Questions from the Containment and Ventilation Branch Proposed EPU Amendment for Monticello
ML090880001
Person / Time
Site: Monticello Xcel Energy icon.png
Issue date: 03/29/2009
From: Tam P
Plant Licensing Branch III
To: Pointer K, Salamon G
Northern States Power Co, Xcel Energy
Tam P
References
TAC MD9990
Download: ML090880001 (2)


Text

Accession No. ML090880001 From: Peter Tam Sent: Sunday, March 29, 2009 3:42 AM To: Peter Tam; 'Pointer, Kenneth'; 'Salamon, Gabor' Cc: Ahsan Sallman; Karl Feintuch

Subject:

Monticello - Additional Draft RAI from Containment and Ventilation Branch re. proposed EPU amendment (TAC MD9990)

Ken:

On 3/19/09 (see below) I e-mailed you draft RAI questions 1 - 36 generated by the Containment and Ventilation Branch. Afterwards I received questions 37 and 38. Please add these to the set of draft questions. Thanks.

37. Regulatory Guide 1.82 Revision 3 states that the use of containment accident pressure is acceptable for operating reactors when there is no practicable alternative. Please explain why there is no practicable way that Monticello can be modified (design change, procedures, etc.) so that the need for containment accident pressure in determining available NPSH is not necessary.
38. Please address why associated circuit issues cannot result in either a loss of containment integrity or actuation of containment overcooling during those Appendix R fire events which require use of containment accident pressure in determining available NPSH.

Peter From: Peter Tam Sent: Thursday, March 19, 2009 3:49 PM To: 'Pointer, Kenneth'; 'Salamon, Gabor' Cc: Ahsan Sallman; Karl Feintuch

Subject:

Monticello - Draft RAI from Containment and Ventilation Branch re. proposed EPU amendment (TAC MD9990)

Ken:

Our review of your 11/5/09 application for an EPU amendment is ongoing. Our Containment and Ventilation Branch has provided the attached draft RAI questions. Please contact me to set up a conference call to discuss these questions. If you desire to hold the conference call during 3/24 - 4/10 when I am on leave, please contact my backup Karl Feintuch to make arrangements (301-415-3079).

This e-mail aims solely to prepare you and others for the requested conference call. This e-mail does not convey a formal 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

Tel. 301-415-1451 E-mail Properties Mail Envelope Properties (C56E360E9D804F4B95BC673F886381E71DBF72EB9B)

Subject:

Monticello - Additional Draft RAI from Containment and Ventilation Branch re. proposed EPU amendment (TAC MD9990)

Sent Date: 3/29/2009 3:41:54 AM Received Date: 3/29/2009 3:41:00 AM From: Peter Tam Created By: Peter.Tam@nrc.gov Recipients:

Peter.Tam@nrc.gov (Peter Tam)

Tracking Status: None Kenneth.Pointer@xenuclear.com ('Pointer, Kenneth')

Tracking Status: None Gabor.Salamon@xenuclear.com ('Salamon, Gabor')

Tracking Status: None Ahsan.Sallman@nrc.gov (Ahsan Sallman)

Tracking Status: None Karl.Feintuch@nrc.gov (Karl Feintuch)

Tracking Status: None Post Office:

HQCLSTR02.nrc.gov Files Size Date & Time MESSAGE 9438 3/29/2009 Options Expiration Date:

Priority: olImportanceNormal ReplyRequested: False Return Notification: False Sensitivity: olNormal Recipients received: