ML101160149

Enclosure 3: Meeting Slides, Prairie Island ISFSI TN-40HT Amendment Second Request for Additional Information

ML101160149
Person / Time
Site:	Prairie Island
Issue date:	04/22/2010
From:	Pamela Longmire NRC/NMSS/SFST/LID/LB
To:	Weaver D NRC/NMSS/SFST/LID
Shared Package
ML101160130	List: ML101160140 ML101160149
References
TAC L24203
Download: ML101160149 (17)

Text

Prairie Island ISFSI TN-40HT Amendment Second Request for Additional Information (RAI)

Public Meeting April 20, 2010 1

Agenda

• Purpose

• Importance of TN-40HT Amendment

• Prairie Island (PINGP) Independent Spent Fuel Storage Installation (ISFSI) Background

• TN-40HT Amendment Status

• Outstanding Request for Additional Information (RAI) Issues

• Schedule

• Questions 2

Purpose

• Communicate importance of amendment

• Communicate Xcel responses, solicit feedback for supplement

• Promote license amendment progress

• Mutually-agreeable schedule for amendment 3

Importance of TN-40HT Amendment

• Essential for reactor operation after 2012

• 40-assembly capacity essential

• Strategic

- State Certificate of Need assumed TN-40HT

- State of Minnesota legislative stay

• Cask fabrication is at risk

• Need for TN-40HT Amendment

- Spent fuel discharge status 4

PINGP ISFSI Background

• Site-Specific License (1993)

• One cask design (TN-40)

• Mature ISFSI Program 5

Outstanding RAI Issues

• Helium Leak Testing of base metal

- 2nd Round RAI A5-2 [ML093310293]

• QA Categories not NUREG/CR-6407

- 2nd Round RAI A1-1 [ML093310293]

• TN use of foreign material standards 6

TN-40HT Amendment Status

• Submitted 3-28-2008

• RAI response 6-26-2009

• RAI response 1-18-2010

- Telecon 1-27-2010

- Telecon 2-1-2010

- Telecon 4-1-2010

• Three (3) outstanding items

• Amendment review suspended 7

Issue: Helium Leak Testing of Base Metal

• N14.5 fabrication testing refers to entire containment boundary 8

Reply: Helium Leak Testing of Base Metal

• SAR already requires fabrication helium leak test of welds and seals

• Revise SAR to extend fabrication leak test to include:

- shell base metal

- lid plate and port covers

- All tests in compliance with N14.5 9

Issue: QA Categories not NUREG/CR-6407

• Existing QA Categories not per NUREG 10

Reply: QA Categories not NUREG/CR-6407

• Adopt NUREG categories for TN-40HT

- QA Topical Report allows for NUREG categories

- Revise TN-40HT parts list categories 11

Issue: TN use of foreign material standards

• SAR does not define equivalence for use of non-ASTM materials 12

Reply: TN use of foreign material standards

• Only ASTM/ASME materials will be used on Important to Safety parts as listed on SAR drawings

• SAR drawings will be revised to remove note that allowed equivalent material standards 13

Summary

1. Helium leak test entire cask

2. Implement NUREG/CR-6407 categories

3. Remove ASTM equivalence note from SAR Drawings 14

Schedule

• Targeting responses by May 7th

• Fall 2010 cask loading campaign

• Requested 90 days for implementation 15

Questions 16

Xcel Energy*

17