ML092110812
| ML092110812 | |
| Person / Time | |
|---|---|
| Site: | Monticello, Prairie Island  |
| Issue date: | 07/29/2009 |
| From: | Salamon G Xcel Energy |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| L-XE-09-008 | |
| Download: ML092110812 (3) | |
Text
@ Xcel Energy" July 29, 2009 414 Nicollet Mall - MP4 Minneapolis, MN 55401 L-XE-09-008 10 CFR 50.55a U.S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, D.C. 20555-0001 Prairie Island Nuclear Generating Plant, Monticello Nuclear Generating Plant Units 1 and 2 Docket 50-263 Dockets 50-282, 50-306 Renewed License No. DPR-22 License Nos. DPR-42 and DPR-60 Request For Approval To Use A Subsequent ASME Code Edition And Addenda For The Second IWE Interval Pursuant to 10 CFR 50.55a(g)(4)(iv), Northern States Power Company, a Minnesota corporation (NSPM) hereby requests approval to use a subsequent ASME Code Edition and Addenda for the second IWE interval for the Prairie Island and Monticello Nuclear Generating Plants. The details of the request are enclosed.
If you have any questions or require additional information, please contact Thomas Downing at (651) 388-1 121 ext. 4366.
Summaw of Commitments This letter makes no new commitments and no revisions to existing commitments.
Gabor Salamon Director, Nuclear Licensing and Emergency Preparedness Northern States Power Company-Minnesota Enclosure cc:
Administrator, USNRC, Region Ill USNRC NRR Project Manager, PlNGP USNRC Senior Resident Inspector, PlNGP USNRC NRR Project Manager MNGP USNRC Senior Resident Inspector, MNGP
Page 1 of 2 Enclosure Request in Accordance with 10 CFR 50.55a(g)(4)(iv) for ISI Item(s)
For Use of Subsequent ASME Code Edition and Addenda The Prairie Island and Monticello Nuclear Generating Plants request approval to use a subsequent ASME Code Edition and Addenda in Accordance with 10 CFR 50.55a(g)(4)(iv) for the second IWE interval. The second IWE interval for both sites starts September 9, 2008 and ends September 8, 2018. Both sites had extended the first interval one year to September 8, 2009 as allowed by IWA-2430(d).
- 1. ASME Code Component(s) Affected The affected components are the code class MC metal containment vessels including interior and exterior accessible surfaces, parts, appurtenances, moisture barriers and pressure retaining bolted connections as itemized in table IWE-2500-1.
2. Applicable Code Edition and Addenda
The code and addenda applicable to the containment inservice inspection program (CISI) for the current first interval for both sites is ASME section XI, subsection IWE, 1992 Addenda. The code of record for the current Inservice Inspection Interval for code class 1, 2 and 3 components at each site is the ASME section XI, 2000 Addenda at Prairie Island and ASME section XI, 1996 Addenda at Monticello.
- 3. Proposed Subsequent Code Edition and Addenda (or Portion)
The subsequent code and addenda proposed for the second interval of the CISI program at each site is ASME section XI, subsection IWE, 2003 Addenda. The 2003 addenda was selected as the most appropriate as it was the latest addenda incorporated by reference in 10 CFR 50.55a(b) twelve months before the scheduled end of the first CISI interval. Repair/replacement activities for class MC components, should they be required, would be performed under the ASME section XI, 2003 Addenda at Prairie Island and the ASME section XI, 2001 Addenda at Monticello in accordance with each sites current repair/replacement program.
The ASME section XI, subsection IWE, 2003 Addenda will be applied to the class MC components for each site.
Page 2 of 2
- 4. Related Requirements The ASME section XI, subsection IWE, 2003 Addenda with all related requirements will be applied to the class MC components for each site with modifications and limitations listed in 10 CFR 50.55a(b) as applicable to the 2003 addenda.
- 5. Duration of Proposed Request The duration of the use of the proposed subsequent Code Edition and Addenda for each site is the second IWE interval starting September 9, 2008 and ending September 8, 2018.