ML063350078

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Draft RAI on LPCI Loop Select Logic Surveillance Requirements
ML063350078
Person / Time
Site: Monticello Xcel Energy icon.png
Issue date: 12/01/2006
From: Tam P
NRC/NRR/ADRO/DORL/LPLIII-1
To: Loeffler R, Salamon G
Nuclear Management Co
References
TAC MD3580
Download: ML063350078 (2)


Text

From: Peter Tam To: Loeffler, Rick; Salamon, Gabor Date: 12/01/2006 9:14:30 AM

Subject:

Monticello: Draft RAI on LPCI Loop Select Logic Surveillance Requirements (TAC MD3580)

Rick:

Our review of this 11/14/06 application for amendment is nearly complete, but our reviewer Benjamin Parks has 2 draft RAI questions:

(1) Provide results of the three most recent channel functional tests and calibrations performed for the LPCI loop select logic functions (Items 2.k, 2.l, and 2.m as displayed in Table 3.3.5.1-1 of the Monticello Nuclear Generating Plant Technical Specifications).

(2) The application does not specify a date for Monticello's entry into MODE 2 from the Spring 2007 refueling outage. Also, the engineering analysis performed using the GE Licensee Event Report Avoidance Test assumes a surveillance test interval (STI) increase from 92 to 140 days, whereas the PRA analysis assumed an STI increase from 92 days to 6 months (180 days).

Supplement the application to include a bounding date for the surveillance test and revise the PRA and AT analyses so that the bounding date is consistent with the analyses.

Please call me to set up a conference call to discuss these draft questions. The sole purpose of this e-mail is to prepare you and others for the proposed conference call. This e-mail does not formally request for additional information, and does not convey a formal NRC staff position.

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: Benjamin Parks; Cranston, Gregory Mail Envelope Properties (457038C6.567 : 12 : 35330)

Subject:

Monticello: Draft RAI on LPCI Loop Select Logic Surveillance Requirements (TAC MD3580)

Creation Date 12/01/2006 9:14:30 AM From: Peter Tam Created By: PST@nrc.gov Recipients Action Date & Time nmcco.com Transferred 12/01/2006 9:15:01 AM Gabor.Salamon (Gabor Salamon)

Richard.Loeffler (Rick Loeffler) nrc.gov OWGWPO03.HQGWDO01 Delivered 12/01/2006 9:14:36

AM GVC CC (Gregory Cranston) Opened 12/01/2006 9:26:09 AM nrc.gov TWGWPO03.HQGWDO01 Delivered 12/01/2006 9:14:36 AM BTP CC (Benjamin Parks) Opened 12/01/2006 9:17:32 AM Post Office Delivered Route nmcco.com OWGWPO03.HQGWDO01 12/01/2006 9:14:36 AM nrc.gov TWGWPO03.HQGWDO01 12/01/2006 9:14:36 AM nrc.gov Files Size Date & Time MESSAGE 2724 12/01/2006 9:14:30 AM Options Auto Delete: No Expiration Date: None Notify Recipients: Yes Priority: Standard ReplyRequested: No Return Notification: None Concealed

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