ML18078A755

Telephone Call Summary on Applicant'S Response to RAI B1.4-1 & B.1.4-2 (Set 5) on 030618 Rev 2 - All Edits Incorp

ML18078A755
Person / Time
Site:	River Bend
Issue date:	03/28/2018
From:	Sayoc E C NRC/NRR/DMLR/MRPB
To:	Maguire W F Entergy Operations
Albert Wong, NRR/DMLR/MRPB, 415-3081
References
CAC MF9757
Download: ML18078A755 (4)

Text

March 28, 2018 Mr. William F. Maguire Site Vice President River Bend Station, Unit 1 Entergy Operations, Inc. 5485 U.S. Highway 61 N St. Francisville, LA 70775

SUBJECT:

SUMMARY OF PUBLIC TELEPHONE CONFERENCE CALL HELD ON MARCH 6, 2018, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND ENTERGY REGARDING REQUESTS FOR ADDITIONAL INFORMATION PERTAINING TO THE RIVER BEND STATION, UNIT 1 LICENSE RENEWAL APPLICATION REVIEW (CAC NO. MF9757)

Dear Mr. Maguire:

The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of Entergy Operations, Inc. (the applicant) held a public telephone conference call on March 6, 2018, to discuss and clarify the applicant's response to the staff's requests for additional information, RAIs B.1.4-1 and B.1.4-2 contained in RAI Set 5, (Agencywide Documents Access and Management System (ADAMS) Accession No. ML18025B750). The telephone conference call was held at the request of NRC to clarify the applicant's response to the staff's RAIs. Enclosure 1 includes a listing of the participants and Enclosure 2 provides a summary of the key points discussed in the conference call. The applicant had an opportunity to comment on this summary to ensure accuracy.

If you have any questions, please contact me by telephone at 301-415-4084 or via e-mail at Emmanuel.Sayoc@nrc.gov. Sincerely,

/RA/

Emmanuel Sayoc, Project Manager License Renewal Project Branch Division of Materials and License Renewal Office of Nuclear Reactor Regulation Docket No. 50-458

Enclosures:

1. List of Participants 2. Summary of the Telephone Call

ML18078A755 OFFICE PM:MRPB:DMLR LA:MRPB:DMLR BC:MRPB:DMLR PM:MRPB:DMLR NAME ESayoc YEdmonds EOesterle ESayoc DATE 03/27/2018 03/22/2018 03/28/2018 03/28/2018 Enclosure 1 LIST OF PARTICIPANTS FOR THE MARCH 6, 2018 TELEPHONE CONFERENCE CALL PARTICIPANTS AFFILIATIONS Eric Oesterle U.S. Nuclear Regulatory Commission (NRC)

Brian Allik NRC William Gardner NRC Emmanuel Sayoc NRC Albert Wong NRC Alan Cox Entergy Nuclear Operations Inc. (Entergy)

Dave Lach Entergy Alyson Coates Entergy Mark Spinelli Entergy Steve McKissack Entergy Jim Morgan Entergy Randy Gauthreaux Entergy Mike Cooper Entergy Reggie Jackson Entergy Mark Sandusky Entergy Lisa Borel Entergy Ted Ivy Entergy Scott Kauffman Exelon Brian Messett Florida Power and Light Rick Orthen Florida Power and Light Mark Moenssens Westinghouse Matthew Golliet Westinghouse Enclosure 2 SUMMARY OF THE TELEPHONE CALL BACKGROUND During the public telephone conference call the following items were discussed.

GALL Report (NUREG-1801 Rev. 2) Aging Management Program (AMP) XI.M41, "Buried and Underground Piping and Tanks," as modified by LR-ISG-2015-01, "Changes to Buried and Underground Piping and Tank Recommendations," Table XI.M41-2, "Inspection of Buried and Underground Piping and Tanks," recommends that when conducting inspections for Preventive Action Category E (i.e., three inspections or five percent of the piping length per 10-year interval), it is permissible that cathodic protection does not meet performance goals; however, the conditions necessary to meet Preventive Action Category E are: coatings have been provided, backfill meets the recommendations in the "preventive actions" program element, plant-specific operating experience meets expectations, and soil sampling demonstrates that the soil is not corrosive.

The applicant's response to RAI B.1.4-1, dated January 24, 2018, states that Preventive Action Category F will be used in determining the number of inspections for portions of the in-scope buried steel piping where the cathodic protection system is not meeting performance goals (i.e., operational time period, effectiveness) unless the soil is demonstrated to be non-corrosive.

It was unclear to the staff how demonstration of soil non-corrosiveness constitutes the only condition necessary when transitioning from Preventive Action Category F to E. GALL Report AMP XI.M41, as modified by LR-ISG-2015-01, Table XI.M41-2 states that the four conditions to consider when transitioning from Preventive Action Category F to E are soil corrosivity, coatings, backfill and plant-specific operating experience.

In addition, in the applicant's response to RAI B.1.4-2, dated January 24, 2018, LRA Sections A.1.4 and B.1.4 state that the criterion for determining piping inspection locations will include in-scope piping protected by cathodic protection located in areas exceeding the limiting critical potential of -1200 mV in more than one survey.

It was unclear to the staff why exceeding the limiting critical potential in a single survey would not be considered when determining piping inspection location (e.g., instances where a single survey shows that the limiting critical potential has been exceeded by hundreds of millivolts). During the public telephone conference call the applicant agreed to supplement its original response with additional information to explain its rationale on conditions to consider when transitioning from Preventive Action Category F to E and how exceeding the limiting critical potential would be considered when determining piping inspection location. Response Date Entergy stated that they understand the concern and will be able to provide additional justification. Entergy staff agreed to supplement their RAI response and provide it no later than 30 days from the date of the public telephone conference call.