ML103490233

Letter from B. Bradley to D. Helton Request for a 75-Day Extension to the Comment Period for Draft NUREG-1953, Confirmatory Thermal-Hydraulic Analysis Risk Models - Surry and Peach Bottom.

ML103490233
Person / Time
Site:	Peach Bottom, Surry, Nuclear Energy Institute
Issue date:	12/13/2010
From:	Bradley B Nuclear Energy Institute
To:	Don Helton NRC/RES/DRA/PRAB
Helton Don 251-7594, RES/DRA
References
NUREG-1953, 75FR69140
Download: ML103490233 (2)

Text

Biff Bradley DIRECTOR, RISK ASSESSMENT December 13, 2010 Mr. Donald Helton U.S. Nuclear Regulatory Commission Office of Nuclear Regulatory Research Washington, DC 20555-0001

Subject:

Request for a 75-day Extension to the Comment Period for Draft NUREG-1953, Confirmatory Thermal-Hydraulic Analysis Risk Models - Surry and Peach Bottom (Federal Register of November 10, 2010, 75 FR 69140-69141)

Project Number: 689

Dear Mr. Helton:

The subject Federal Register notice issued for public comment a draft U.S. Nuclear Regulatory Commission Regulation, Confirmatory Thermal-Hydraulic Analysis Risk Models - Surry and Peach Bottom. Comments on the draft regulatory guide were requested by December 15, 2010. The purpose of this letter is to request a 75-day extension to this comment period, which would result in a comment due date of February 28, 2011.

This draft NUREG documents in-depth analysis of the thermal-hydraulic aspects of the Standardized Plant Analysis Risk (SPAR) models for Surry and Peach Bottom, and suggests numerous changes to improve the consistency of the SPAR models with licensee-generated analyses. Review of this draft regulatory guide will require input from personnel with varied technical expertise from several utilities, and the Nuclear Energy Institute is coordinating industry comments to ensure that the comments submitted by industry are of high quality and that they reflect a consensus industry perspective. However, the comment period provided in the November 10 Federal Register Notice is insufficient given the volume and breadth of material that merits a thorough technical review.

Extending the comment period would provide the time necessary to fully assess this draft NUREG and arrive at a set of comments that are of highest value to the NRC staff.

1776 I Street, NW l Suite 400 l Washington, DC l 20006-3708 l P: 202.739.8083 l F: 202.533.0107 l reb@nei.org l www.nei.org

December 13, 2010 Page 2 We appreciate your consideration of this request. Since the current due date for comments is already near, we request timely feedback. If you have any questions or require additional information, please contact me or Victoria Anderson at vka@nei.org; 202-739-8101.

Sincerely, Biff Bradley c: Mr. Kevin Coyne Rules, Announcements, and Directives Branch NRC Document Control Desk