ML14010A023

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NRR E-mail Capture - Monticello Nuclear Generating Plant - Draft Request for Additional Information Relief Request (RR)-21
ML14010A023
Person / Time
Site: Monticello Xcel Energy icon.png
Issue date: 01/09/2014
From: Beltz T
Plant Licensing Branch III
To: Loeffler R
Northern States Power Co
References
MF2654
Download: ML14010A023 (3)


Text

NRR-PMDAPEm Resource From: Beltz, Terry Sent: Thursday, January 09, 2014 11:53 AM To: Loeffler, Richard A.

Cc: Carlson, Robert; Jenkins, Joel; Eckholt, Gene F. (Eugene.Eckholt@xenuclear.com);

Kissinger, Peter W.

Subject:

Monticello Nuclear Generating Plant - Draft Request for Additional Information re: Relief Request (RR)-21 (TAC No. MF2654)

Dear Mr. Loeffler:

By letter to the U.S. Nuclear Regulatory Commission (NRC) dated August 28, 2013 (Agencywide Documents Access and Management System Accession No. ML13241A236), Northern States Power Company - a Minnesota corporation (NSPM), doing business as Xcel Energy, submitted relief request RR-21. In RR-21, NSPM requests relief from examination coverage requirements imposed by the American Society of Mechanical Engineers Boiler and Pressure Vessel Code,Section XI, for the Monticello Nuclear Generating Plant, pursuant to 10 CFR 50.55a(g)(5)(iii). The request applies to the fourth 10-year inservice inspection interval which ended August 31, 2012.

The NRC staff in the Vessels and Internals Integrity Branch (EVIB) of the Office of Nuclear Reactor Regulatory has identified areas where additional information is needed to complete its review. The request for additional information (RAI) is provided below.

You may accept this draft RAI as a formal Request for Additional Information and provide a response by February 14, 2014. Alternatively, you may request to discuss the contents of this draft RAI with the NRC staff in a conference call, including any change to the proposed response date.

Please let me know if you have any questions or concerns.

Sincerely, TERRY A. BELTZ, SENIOR PROJECT MANAGER U.S. Nuclear Regulatory Commission One White Flint North 11555 Rockville Pike Rockville, MD 20852-2738 Mail Stop: O-8D15 REQUEST FOR ADDITIONAL INFORMATION REGARDING RELIEF REQUEST (RR)-21 RELIEF FROM IMPRACTICAL EXAMINATION COVERAGE REQUIREMENTS PURSUANT TO 10 CFR 50.55a(g)(5)(iii)

FOR THE FOURTH TEN-YEAR INSERVICE INSPECTION INTERVAL MONTICELLO NUCLEAR GENERATING PLANT 1

DOCKET NO. 50-263 (TAC No. MF2654)

By letter dated August 28, 2013 (Agencywide Documents Access Management System (ADAMS) Accession No. ML13241A236), Northern States Power Company - a Minnesota corporation (NSPM), doing business as Xcel Energy, submitted a request for relief based on impractical examination coverage requirements pursuant to 10 CFR 50.55a(g)(5)(iii) for the fourth ten-year inservice inspection (ISI) interval at the Monticello Nuclear Power Plant.

The NRC staff reviewed the information provided by NSPM and requires the following additional information to complete its review.

RAI-1

In the August 28, 2013, submittal, Enclosure 2, Table A, states that component weld W-8 (head-to-flange weld) received 79% examination coverage in 2011 during the 4th interval examination, and that coverage was limited due to flange configuration. However, Enclosure 4, Table B, states that weld W-8 received 93% examination coverage in 2001 during the 3rd interval examination.

Please discuss the basis for the differences in examination methodologies between the 3rd and 4th 10-year ISI interval examination coverage for weld W-8.

2

Hearing Identifier: NRR_PMDA Email Number: 1008 Mail Envelope Properties (Terry.Beltz@nrc.gov20140109115200)

Subject:

Monticello Nuclear Generating Plant - Draft Request for Additional Information re:

Relief Request (RR)-21 (TAC No. MF2654)

Sent Date: 1/9/2014 11:52:59 AM Received Date: 1/9/2014 11:52:00 AM From: Beltz, Terry Created By: Terry.Beltz@nrc.gov Recipients:

"Carlson, Robert" <Robert.Carlson@nrc.gov>

Tracking Status: None "Jenkins, Joel" <Joel.Jenkins@nrc.gov>

Tracking Status: None "Eckholt, Gene F. (Eugene.Eckholt@xenuclear.com)" <Eugene.Eckholt@xenuclear.com>

Tracking Status: None "Kissinger, Peter W." <Peter.Kissinger@xenuclear.com>

Tracking Status: None "Loeffler, Richard A." <Richard.Loeffler@xenuclear.com>

Tracking Status: None Post Office:

Files Size Date & Time MESSAGE 3070 1/9/2014 11:52:00 AM Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date:

Recipients Received: