ML103090378

Licensee Handouts for LaSalle Meeting with Exelon to Discuss Netco Inserts

ML103090378
Person / Time
Site:	LaSalle
Issue date:	11/19/2010
From:	Exelon Nuclear
To:	Office of Nuclear Reactor Regulation
Brown Eva, NRR/DORL, 415-2315
References
TAC ME2376, TAC ME2377
Download: ML103090378 (10)

Text

Exelon Nuclear

/<<

LaSalle County Station Unit 2 Spent Fuel Storage Racks October 21, 2010

Exelon$

Nuclear Purpose

~ Identify remaining open items for issuance of rack inserts license amendment

~ Describe current spent fuel pool status

~ Discuss current and "best-available" schedule for rack inserts installation

~ Discuss any concerns regarding Boraflex monitoring program plans during rack inserts installation transition period in Unit 2 spent fuel pool

Exelon Nuclear Agenda

../ Opening Remarks..................... Ken Nicely

../ Discussion of Remaining Open Items...... NRC/Exelon

../ Spent Fuel Pool Management Strategy.... Adam Levin

../ Interim Boraflex Management Strategy..... NRC/Exelon

Z JJ Q

m x

CD-o

J

o en

-0 CD

3.>>

110.

C

$l)

~3 S<or o~

CD _.

(")

J o

3 3

(J)

(J)_.

o

J

Exelon~

Current Unit 2 Fuel Pool Status Nuclear

../ Total number of locations - 4078

../ Total number of usable locations - 4004

../ Plans to adopt RACKLIFE 2.1.1

• Limiting assembly design - ATRIUM-10

• Limiting Boraflex degradation with all uncertainties - 44.5%

• Per RACKLIFE calculations - 1099 unusable locations

../ Number of empty, usable cells between now and 12/31/2010- 196

../ After 1/1/2011, number of empty, usable cells -96

../ Dry cask storage program campaign substantially delayed; potential start date now pushed to no earlier than October 22, 2010

Exelon@

Nuclear Current Unit 2 Fuel Pool Status

../ Due to plant activity scheduling, unlikely that more than three (3) dry storage casks can be loaded - creates additional 204 usable locations

../ Entering Spring 2011 outage, LaSalle will have 300 empty locations

../ 312 assemblies permanently discharged - insufficient number of locations to perform Spring 2011 refueling outage

../ Evaluating compensatory measures in order to execute refueling outage

../ Additional -200 locations expected to be declared unusable on 7/1/2011

Nuclear Exelon Current Plans for Rack Inserts

../ Based upon RACKLIFE 2.1.1 model, approximately 200 locations will be declared unusable every 6 months

../ Schedule for installing rack inserts between 201 0 and 2016 is sufficient to stay ahead of unusable declarations

• 400 inserts per year beginning in 2011 (after initial installation of 1875 inserts in 2010-2011)

../ Three racks full of inserts required to periorm Spring 2011 refueling outage without compensatory measures

Nuclear Exelon Accelerated Plans for Rack Inse

../ Remaining 775 of 1875 total in manufacturing expected to be delivered by February 2011

../ New ingot of raw material can be scheduled with Alcan for January 2011 - raw material necessary for 4000+

cells in Unit 2 pool

../ NETCO can begin manufacturing additional inserts in February 2011 at a rate of -200/month

../ NETCO completes manufacturing of inserts Spring 2012

../ Critical path for complete deployment is availability of installation windows (competing with outages and dry cask storage activities)

../ Current best estimate has complete deployment in Fall 2013

Z

D o

m CD o

J