ML102160258

Request for Additional Information Email, Request for Alternative ANO2-ISI-006 for Implementation of a Risk-Informed Inservice Inspection Program Based on ASME Code Case N-716 for the Fourth 10-Year Interval

ML102160258
Person / Time
Site:	Arkansas Nuclear
Issue date:	08/04/2010
From:	Kalyanam N Plant Licensing Branch IV
To:	David Bice Entergy Operations
Kalyanam N, NRR/DORL/LPL4, 415-1480
References
TAC ME3128
Download: ML102160258 (2)

Text

From: Kalyanam, Kaly Sent: Wednesday, August 04, 2010 10:20 AM To: BICE, DAVID B

Subject:

Request for ALternative - TAC No. ME3128 Dave,,

By letter dated January 20, 2010, as supplemented by letter dated January 28, 2010, Entergy Operations, Inc. (Entergy) made a request to NRC for approval to use an Alternative - Implementation of a Risk-Informed Inservice Inspection Program Based on ASME Code Case N-716.

The TAC No. for this request is ME3128.

The NRC Staff has reviewed the and determined that we require additional information to complete our review. A request for additional information appears below.

The staff requests you to provide a response to the RAI within 30 days from the date of this email. Please let me know if this date cannot be met.

Thanks Kaly REQUEST FOR ADDITIONAL INFORMATION REGARDING ARKANSAS NUCLEAR ONE - UNIT 2 REQUEST FOR APPROVAL OF FOURTH TEN-YEAR INTERVAL INSERVICE INSPECTION PROGRAM PLAN

1. In Appendix 1 of the submittal, the disposition to IF-A1-01 states that the ANO-2 internal flooding analysis has been completed and has been performed in accordance with the accepted methodology used at Waterford-3 and therefore the issue is considered to be resolved. Based on the information provided in the submittal, the staff does not have sufficient information to characterize the quality of the internal flooding PRA for ANO-2.

Since this application is dependent on the flooding portion of the PRA, the staff requests that, based on RG 1.200 guidelines, the licensee perform a focus-scope gap assessment on the internal flooding portion of the updated PRA model. The gap assessment should assess the capability category for each supporting requirement for the updated internal flooding PRA based on the ASME standard. In addition, provide a disposition related to this application for any supporting requirements that are not met.

2. Were new examination locations identified, if so, were the new examination locations included in the change in risk estimate? Using an upper-bound estimate for new locations would be non-conservative. Please demonstrate that this non-conservative approach, if corrected, would not exceed the delta risk guidelines.

E-mail Properties Mail Envelope Properties ()

Subject:

Request for ALternative - TAC No. ME3128 Sent Date: 8/4/2010 9:22:22 AM Received Date: 8/4/2010 10:19:00 AM From: Kalyanam, Kaly Created By: Kaly.Kalyanam@nrc.gov Recipients:

DBICE@entergy.com (BICE, DAVID B)

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Files Size Date & Time MESSAGE 10287 8/4/2010 Options Expiration Date:

Priority: olImportanceNormal ReplyRequested: False Return Notification: False Sensitivity: olNormal Recipients received: