ML12165A231

Lr - Draft Request for Additional Information Limerick Generating Station LRA

ML12165A231
Person / Time
Site:	Limerick
Issue date:	06/12/2012
From:	Office of Nuclear Reactor Regulation
To:	Division of License Renewal
References
Download: ML12165A231 (3)

Text

LimerickNPEm Resource From: Kuntz, Robert Sent: Tuesday, June 12, 2012 11:45 AM To: Christopher.Wilson2@exeloncorp.com Cc: Anthony Z. Roisman; gfettus@nrdc.org; Smith, Maxwell; LimerickHearingFile Resource

Subject:

DRAFT Request for Additional Information RE: Limerick Generating Station LRA Attachments: LGS LRA DRAFT followup RAI on CASS RWCU pump casing.docx

Chris, Attached is a DRAFT Request for Information related to the license renewal application for Limerick Generating Station. If Exelon would like clarification on the attached let me know and I will set up a teleconference.

Robert Kuntz Sr. Project Manager NRR/ADRO/DLR/RPB1 (301) 415-3733 robert.kuntz@nrc.gov 1

Hearing Identifier: Limerick_LR_NonPublic Email Number: 1144 Mail Envelope Properties (94A2A4408AC65F42AC084527534CF41698E0524A06)

Subject:

DRAFT Request for Additional Information RE: Limerick Generating Station LRA Sent Date: 6/12/2012 11:44:58 AM Received Date: 6/12/2012 11:45:05 AM From: Kuntz, Robert Created By: Robert.Kuntz@nrc.gov Recipients:

"Anthony Z. Roisman" <aroisman@nationallegalscholars.com>

Tracking Status: None "gfettus@nrdc.org" <gfettus@nrdc.org>

Tracking Status: None "Smith, Maxwell" <Maxwell.Smith@nrc.gov>

Tracking Status: None "LimerickHearingFile Resource" <LimerickHearingFile.Resource@nrc.gov>

Tracking Status: None "Christopher.Wilson2@exeloncorp.com" <Christopher.Wilson2@exeloncorp.com>

Tracking Status: None Post Office: HQCLSTR01.nrc.gov Files Size Date & Time MESSAGE 348 6/12/2012 11:45:05 AM LGS LRA DRAFT followup RAI on CASS RWCU pump casing.docx 28544 Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date:

Recipients Received:

LIMERICK GENERATING STATION LICENSE RENEWAL APPLICATION DRAFT REQUESTS FOR ADDITIONAL INFORMATION DRAI 3.1.1.38-1.2

Background

RAI 3.1.1.38-1.1 requested justification as to why opportunistic inspections and the planned inspection method would be adequate to manage loss of fracture toughness due to thermal aging embrittlement of the ASME Code Class 3 cast austenitic stainless steel (CASS) pump casings in the reactor water cleanup system (RWCU).

Issue:

The response to RAI 3.1.1.38-1.1, provided by letter dated May 31, 2012, does not address the history and results of the previous VT-3 examinations conducted on the CASS pump casings.

Therefore, the staff needs the following information to further evaluate the adequacy of the opportunistic inspections for managing aging: (1) when the previous VT-3 examinations were conducted on the CASS pump casings, and (2) the results of the inspections.

Request:

1. If any inspections have been performed on the ASME Code Class 3 CASS pump casings, provide the inspection results including when the inspection(s) were completed.

2. Based on the history and results of the previous inspections using the VT-3 examination, justify why the aging management would not need to ensure the following inspections of the RWCU pump casings: (1) an inspection of the representative pump casing of each unit prior to the period of extended operation and (2) at least, an inspection of the representative pump casing of each unit during the period of extended operation.