ML103410506

December 1, 2010, Summary of Telephone Conference Call Held Between the U.S. Nuclear Regulatory Commission and Entergy Nuclear Operations, Inc., Concerning the Pilgrim Nuclear Power Station License Renewal Application

ML103410506
Person / Time
Site:	Pilgrim
Issue date:	01/07/2011
From:	Regner L M License Renewal Projects Branch 2
To:
Regner L M, NRR/DLR, 415-1906
References
TAC MC9669
Download: ML103410506 (6)

Text

UNITED NUCLEAR REGULATORY WASHINGTON, D.C. 20555-0001 January 7, 2011 LICENSEE:

Entergy Nuclear Operations, Inc. FACILITY:

Pilgrim Nuclear Power Station

SUMMARY

OF TELEPHONE CONFERENCE CALL HELD ON DECEMBER 1, 2010, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND ENTERGY NUCLEAR OPERATIONS, INC., CONCERNING THE PILGRIM NUCLEAR POWER STATION LICENSE RENEWAL APPLICATION (TAC NO. MC9669) The U.S. Nuclear Regulatory Commission (the staff) and representatives of Entergy Nuclear Operations, Inc. (the applicant) held a telephone conference call on December 1, 2010, to discuss and clarify the staff's draft request for additional information (RAI) concerning the Pilgrim Nuclear Power Station (Pilgrim) license renewal application.

The draft RAI was associated with a review of NUREG-1891, "Safety Evaluation Report Related to the License Renewal of Pilgrim Nuclear Power Station," issued on June 28,2007, and supplemented on September 28, 2007. The telephone conference call was useful in clarifying the intent of the staff's draft RAI. Enclosure 1 provides a listing of the participants and Enclosure 2 includes the draft RAI discussed with the applicant, including a brief description on the status of the item. The applicant had an opportunity to comment on this summary. Lisa M. Regner, Sr. Project Manager Projects Branch 2 Division of License Renewal Office of Nuclear Reactor Regulation Docket No. 50-293

Enclosures:

As stated cc w/encls: Distribution via Listserv PARTICIPANTS Lisa Regner Bart Fu Allen Hiser Joe Lynch Fred Mogolesko Dave Heard Paul Smith TELEPHONE CONFERENCE PILGRIM NUCLEAR POWER LICENSE RENEWAL LIST OF DECEMBER 1, AFFILIATIONS U.S. Nuclear Regulatory Commission (NRC) NRC NRC Entergy Nuclear Operations, Inc. (Entergy)

Entergy Entergy Entergy ENCLOSURE DRAFT REQUESTS FOR ADDITIONAL INFORMATION PILGRIM NUCLEAR POWER STATION LICENSE RENEWAL APPLICATION DECEMBER 1, The U.S. Nuclear Regulatory Commission (the staff) and representatives of Entergy Nuclear Operations, Inc. (the applicant) held a telephone conference call on December 1, 2010, to discuss and clarify the following draft request for additional information (RAI) concerning the Pilgrim Nuclear Power Station license renewal application (LRA). DRAFT RAI B.1.23-1 -Small Bore Piping Socket Welds During the past year, the staff has worked extensively with license renewal applicants, the and the industry on socket weld examination issues for license renewal. The efforts included reviews of operating experience and various techniques for examination of The staff finds that volumetric examination of Class 1 small bore socket welds recommended the GALL Report AMP XI.M35, "One-Time Inspection of ASME Code Class 1 Piping," is warranted based on the operating experience review. It provides assurance that either aging of small-bore ASME Code Class 1 piping is not occurring or aging is The staff noted that a VT-2 examination is required for socket welds by ASME Code, Section but it is only for leakage detection. This examination is not adequate for license renewal management since cracking of socket welds, in most cases, starts from the inside surface. the time a flaw is detected by VT-2 (or a surface examination), the subject component has and cannot perform its intended function.

This is the reason the GALL Report recommends one time volumetric examinations of small-bore piping including socket because examination of the external surface is not an adequate way to detect cracks on the interior surface of a The staff also finds that several demonstrated ultrasonic testing (UT) techniques have been developed and used by the nuclear industry.

They provide a pass or fail result that adequate in the examination of socket welds. Recently developed and improved have increased the capability to differentiate construction flaws and service induced Measures have been made to minimize the possibility of false-positive Nonetheless, the staff understands that, based on the GALL Report, license renewal have the option of performing available industry demonstrated UT, opportunistic examinations, or qualified UT when available, on socket A supplemental review of the One-Time Inspection of ASME Code Class 1 Small-Bore Program in the LRA for PNPS revealed that the examination of socket welds only includes and surface examinations.

This is not consistent with the recommendation of the GALL ENCLOSURE 2

-2 Update the One-Time Inspection of ASME Code Class 1 Small-Bore Piping Program to volumetric examinations or opportunistic destructive examinations of socket Discussion:

the applicant stated that it understands the question and will respond to the January 7, 2011 LICENSEE:

Entergy Nuclear Operations, Inc. FACILITY:

Pilgrim Nuclear Power Station

SUMMARY

OF TELEPHONE CONFERENCE CALL HELD ON DECEMBER 1, 2010, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND ENTERGY NUCLEAR OPERATIONS, INC., CONCERNING THE PILGRIM NUCLEAR POWER STATION LICENSE RENEWAL APPLICATION (TAC NO. MC9669) The U.S. Nuclear Regulatory Commission (the staff) and representatives of Entergy Nuclear Operations, Inc. (the applicant) held a telephone conference call on December 1, 2010, to discuss and clarify the staff's draft request for additional information (RAI) concerning the Pilgrim Nuclear Power Station (Pilgrim) license renewal application.

The draft RAI was associated with a review of NUREG-1891, "Safety Evaluation Report Related to the License Renewal of Pilgrim Nuclear Power Station," on June 28,2007, and supplemented on September 28, 2007. The telephone conference call was useful in clarifying the intent of the staff's draft RAI. Enclosure 1 provides a listing of the participants and Enclosure 2 includes the draft RAI discussed with the applicant, including a brief description on the status of the item. The applicant had an opportunity to comment on this summary. IRA! Lisa M. Regner, Sr. Project Manager Projects Branch 2 Division of License Renewal Office of Nuclear Reactor Regulation Docket No. 50-293

Enclosures:

As stated LA:RPOB:DLR IKing B2:DLR LRegner 12/13/10 12/22/10 PM:RPB2:DLR LRegner (Signature) 1/7/11 BC:RPB2:DLR DWrona 117/11 OFFICIAL RECORD COpy Memorandum to Entergy Nuclear Operations, Inc. from L. Regner dated January 7, 2010

SUMMARY

OF TELEPHONE CONFERENCE CALL HELD ON DECEMBER 1, 2010, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND ENTERGY NUCLEAR OPERATIONS, INC., CONCERNING THE ANNUAL UPDATE ASSOCIATED WITH THE PILGRIM NUCLEAR POWER STATION LICENSE RENEWAL APPLICATION DISTRIBUTION:

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