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LaSalle Units 1 & 2 - Information Request for NRC Biennial Baseline Component Design Bases Inspection 05000373-07-009 (Drs); 05000374-07-009 (DRS)
	ML070851385
Person / Time
Site:	LaSalle
Issue date:	03/26/2007
From:	Stone A M; NRC/RGN-III/DRS/EB2
To:	Crane C M; Exelon Generation Co, Exelon Nuclear
References
	IR-07-009 IR-07-009
	Download: ML070851385 (9)
	v • d • e

March 26,2007Mr. Christopher M. CranePresident and Chief Nuclear Officer

Exelon Nuclear

Exelon Generation Company, LLC

4300 Winfield Road

Warrenville, IL 60555SUBJECT:LASALLE COUNTY STATION, UNITS 1 AND 2 - INFORMATION REQUESTFOR AN NRC BIENNIAL BASELINE COMPONENT DESIGN BASES

INSPECTION 05000373/2007009(DRS); 05000374/2007009(DRS)Dear Mr. Crane:

On August 27, 2007, the NRC will begin a biennial baseline Component Design BasesInspection (CDBI) at the LaSalle County Station, Units 1 and 2. This inspection will be

performed in accordance with revised NRC Baseline Inspection Procedure (IP) 71111.21 and

replaces the biennial Safety System Design and Performance Capability Inspection. The CDBI inspection focuses on components which have high risk and low design margins. The components to be reviewed during this baseline inspection will be identified during an

in-office preparation week prior to the first week of the on-site inspection. In addition, a number

of risk significant operator actions and operating experience issues, associated with the

component samples, will also be selected for review. The inspection will include 3 weeks on-site, including the information gathering during the firston-site week. The inspection team will consist of six NRC inspectors, of whom five will focus on

engineering and one on operations. The current inspection schedule is as follows: *August 27 through August 31, 2007;*September 10 through September 14, 2007; and

September 24 through September 28, 2007.The team will be preparing for the inspection, mainly during the week of August 20, 2007, asdiscussed in the attached enclosure. A Region III Senior Reactor Analyst may accompany theinspection team during the week of August 27, 2007, to review probabilistic risk assessment

data and assist in identifying risk significant components, which will be reviewed during the

inspection.Experience with previous baseline design inspections of similar depth and length has shownthat these type of inspections are extremely resource intensive, both for the NRC inspectors

and the licensee staff. In order to minimize the inspection impact on the site and to ensure a

productive inspection for both parties, we have enclosed a request for information needed for

the inspection.

C. Crane-2-It is important that all of these documents are up to date and complete in order to minimize thenumber of additional documents requested during the preparation and/or the on-site portions of

the inspection. Insofar as possible, this information should be provided electronically to the

lead inspector. The information request has been divided into three groups:*The first group lists information necessary for our initial inspection scoping activities. This information should be available to the lead inspector no later than July 30, 2007.

By August 10, 2007, the lead inspector will communicate the initial selected set of

approximately 30 high risk components. *The second group of documents requested are those items needed to support ourin-office preparation activities. This set of documents, including the calculations

associated with the initial selected components, should be available at the Regional

Office no later than August 17, 2007. During the in-office preparation activities, the

team may identify additional information needed to support the inspection. *The last group includes the additional information above as well as plant specificreference material. This information should be available to the team on the first day of

the inspection. It is also requested that corrective action documents and questions

developed during the inspection be provided to the inspectors throughout the inspection.The lead inspector for this inspection is Ms. Patricia Lougheed. We understand that ourlicensing contact for this inspection is Mr. P. Holland of your organization. If there are any

questions about the inspection or the material requested in the enclosure, please contact the

lead inspector at (630) 829-9760 or via e-mail at VPL@nrc.gov.In accordance with 10 CFR 2.390 of the NRC's "Rules of Practice," a copy of this letter andits enclosure will be available electronically for public inspection in the NRC Public Document Room or from the Publicly Available Records (PARS) component of NRC's document system

(ADAMS), accessible from the NRC Web site at http://www.nrc.gov/reading-rm/adams.html (thePublic Electronic Reading Room).Sincerely,/RA/Ann Marie Stone, ChiefEngineering Branch 2

Division of Reactor Safety Docket No. 50-373; 50-374License No. NPF-11; NPF-18Enclosure:Component Design Bases Inspection Document Request

See Attached Distribution

C. Crane-3-cc w/encl:Site Vice President - LaSalle County StationLaSalle County Station Plant Manager

Regulatory Assurance Manager - LaSalle County Station

Chief Operating Officer

Senior Vice President - Nuclear Services

Senior Vice President - Mid-West Regional

Operating Group

Vice President - Mid-West Operations Support

Vice President - Licensing and Regulatory Affairs

Director Licensing - Mid-West Regional

Operating Group

Manager Licensing - Clinton and LaSalle

Senior Counsel, Nuclear, Mid-West Regional

Operating Group

Document Control Desk - Licensing

Assistant Attorney General

Illinois Emergency Management Agency

State Liaison Officer

Chairman, Illinois Commerce Commission