ML18071A018

Telephone Call Summary RAI 3.2.2.3.2-1a Generic Filtration on 27FEB2018 v1_RBS Edits incorp._030618

ML18071A018
Person / Time
Site:	River Bend
Issue date:	03/29/2018
From:	Sayoc E C Division of Materials and License Renewal
To:	Maguire W F Entergy Operations
Albert Wong, NRR/DMLR/MRPB, 415-3081
References
CAC MF9757
Download: ML18071A018 (4)

Text

March 29, 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 FEBRUARY 27, 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 February 27, 2018, to discuss and clarify the applicant's response to the staff's requests for additional information, RAI 3.2.2.3.2-1 Generic Filtration RAI Set 3, (Agencywide Documents Access and Management System (ADAMS) Accession No. ML18010A848). The telephone conference call was held at the request of NRC to clarify the applicant's response to the staff's RAI.

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.

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 Projects 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

ML18071A018 OFFICE PM:MRPB:DMLR BC: MRPB:DMLRPM:MRPB:DMLRNAME ESayoc EOesterle ESayoc DATE 03/28/2018 03/28/208 03/29/2018 Enclosure 1 LIST OF PARTICIPANTS FOR THE FEBRUARY 27, 2018 TELEPHONE CONFERENCE CALL PARTICIPANTS AFFILIATIONS Eric Oesterle U.S. Nuclear Regulatory Commission (NRC) Matthew Yoder NRC Steve Bloom NRC William Holston NRC James Gavula NRC William Gardner NRC Brian Allik NRC Emmanuel Sayoc NRC Albert Wong NRC Alan Cox Entergy Nuclear Operations Inc. (Entergy) Gary Young Entergy Dave Lach Entergy Alyson Coates Entergy Lisa Borel Entergy Kirk Ehren Entergy Steve McKissack Entergy Mark Spinelli Entergy Tom Orlando Entergy Ted Ivy Entergy Paul Aitken Dominion Energy Eric Blocher Dominion Energy Craig Heath Dominion Energy Rick Orthen NextEra Energy Jeff Head Enercon Services, Inc.

James Wick Enercon Services, Inc.

Stephen Hale Enercon Services, Inc. Jack Hoffman Enercon Services, Inc. Bill Maher Florida Power & Light Paul Jacobs Florida Power & Light Terry McCool Florida Power & Light Brian Messitt Florida Power & Light Steve Franzone Florida Power & Light Paul Weymuller Exelon Mary Kowalski Exelon Mark Miller Exelon Scott Kauffman Exelon Emma Wong Electric Power Research Institute Enclosure 2 SUMMARY OF THE TELEPHONE CALL BACKGROUND During the public telephone conference call the following items were discussed.

The applicant's response to RAI 3.2.2.3.2-1 Generic Filtration RAI Set 3, dated January 10, 2018, addresses the flow blockage due to fouling and filtration function of numerous components (including strainers) in Sections 3.2, 3.3, and 3.4 of the license renewal application.

The applicant's response states that routine monitoring of the active function of flow delivery, including observing operational parameters, periodic inspection and cleaning, is credited to manage potential flow blockage of the strainers.

With the exception of the emergency core cooling system suction strainers and filters in the

control rod drive hydraulic control units (HCU), th e staff agreed with the applicant's position that routine observation of the active flow function (e.g., high differential pressure alarmed in the control room) could manage the potential flow blockage of those components that are readily monitorable. However, it is not clear to the staff how monitoring during normal operation can manage potential flow blockage for those components that are not readily monitorable. In addition, the staff seeks clarification on the effectiveness of monitoring the HCU filters.

Accordingly, the staff prepared follow-up RAI 3.2.2.3.2-1a (ADAMS Accession No. ML18065A213) requesting additional information to demonstrate how monitoring during normal operation, including periodic inspection and cleaning, will be adequate to provide reasonable assurance that the intended function of flow delivery can be maintained in all cases.

Response Date

Entergy stated that they understand the concern and will be able to provide a response to the follow-up RAI no later than 30 days from its receipt.