ML15355A034

12/8/2015 Summary of Teleconference for GGNS Set 53 RAI Responses

ML15355A034
Person / Time
Site:	Grand Gulf
Issue date:	01/12/2016
From:	Rebecca Richardson Division of License Renewal
To:
Richardson R, NRR/DLR, 415-2867
References
DLR-15-0573
Download: ML15355A034 (5)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 January 12, 2016 LICENSEE:

Entergy Operations, Inc.

FACILITY:

Grand Gulf Nuclear Station, Unit 1

SUMMARY

OF TELEPHONE CONFERENCE CALL HELD ON DECEMBER 8, 2015 BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND ENTERGY OPERATIONS, INC., CONCERNING REQUEST FOR ADDITIONAL INFORMATION PERTAINING TO THE GRAND GULF NUCLEAR STATION LICENSE RENEWAL APPLICATION (TAC NO. ME7493)

The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of Entergy Operations, Inc. (Entergy or the applicant) held a telephone conference call on December 8, 2015, to discuss and clarify the staffs request for additional information (RAI) concerning the Grand Gulf Nuclear Station license renewal application. The telephone conference call was useful in discussing and clarifying the staffs concerns with the responses to the RAI.

provides a listing of the participants and Enclosure 2 contains a listing of the RAI discussed with the applicant, including a brief description on the status of the items.

The applicant had an opportunity to comment on this summary.

/RA/

Rebecca Richardson, Project Manager Projects Branch 1 Division of License Renewal Office of Nuclear Reactor Regulation Docket No. 50-416

Enclosures:

1. List of Participants

2. Summary of Telephone Conference Call cc w/encls: Listserv

ML15355A034 Publicly Available Non-Publicly A

il bl Sensitive Non-Sensitive To receive a copy of this document, indicate in the concurrence box C = Copy without attach/encl, E = Copy with attach/encl, N = No copy OFFICE LA:DLR PM:RPB1:DLR BC:RPB1:DLR PM: RPB1:DLR NAME IBetts RRichardson YDiaz-Sanabria RRichardson DATE 1/ 5 /16 1/ 8 /16 1/ 12 /16 1/ 12 /16

SUMMARY

OF TELEPHONE CONFERENCE CALL HELD ON DECEMBER 8, 2015 BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND ENTERGY OPERATIONS, INC., CONCERNING REQUEST FOR ADDITIONAL INFORMATION PERTAINING TO THE GRAND GULF NUCLEAR STATION, LICENSE RENEWAL APPLICATION (TAC NO. ME7493)

DISTRIBUTION:

EMAIL:

PUBLIC RidsNrrDlr Resource RidsNrrDlrRpb1 Resource RidsNrrDlrRpb2 Resource RidsNrrDlrRarb Resource RidsNrrDlrRasb Resource RidsOgcMailCenter RidsNrrPMGrandGulf Resource RRichardson DDrucker JDanna AWang RSmith, RIV BRice, RIV DMcIntyre, OPA

ENCLOSURE 1 TELEPHONE CONFERENCE CALL GRAND GULF NUCLEAR STATION, UNIT 1 LICENSE RENEWAL APPLICATION LIST OF PARTICIPANTS DECEMBER 8, 2015 PARTICIPANTS AFFILIATION Yoira Diaz-Sanabria U.S. Nuclear Regulatory Commission (NRC)

Allen Hiser NRC James Medoff NRC Rebecca Richardson NRC Lori Tilly General Electric-Hitachi Keith Brinson Entergy Operations, Inc. (Entergy)

Alan Cox Entergy Kirk Ehren Entergy David Lach Entergy Richard Scarbrough Entergy Andrew Taylor Entergy Gary Young Entergy

ENCLOSURE 2

SUMMARY

OF TELEPHONE CONFERENCE CALL GRAND GULF NUCLEAR STATION, UNIT 1 LICENSE RENEWAL APPLICATION DECEMBER 8, 2015 The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of Entergy Operations, Inc. (Entergy or the applicant), held a telephone conference call on December 8, 2015, to discuss Set 53 Request for Additional Information (RAI) responses associated with the upper shelf energy (USE) assessment for the Grand Gulf Nuclear Station license renewal application (LRA). The telephone conference call was useful in discussing and clarifying the staffs concerns with the responses to the RAI.

RAI 4.2.3-2

Background:

By letter dated July 29, 2015 (ADAMS Accession No. ML15212A747), the applicant updated the USE analysis for Grand Gulf Nuclear Station, which has been identified as a Time Limited Aging Analyses for the LRA. The updated USE analysis (i.e., LRA Table 4.2-2 and Note 10 of this table) identifies that the applicant performed an equivalent margins analysis (EMA) for a specific plate component (made from Heat No. C2779-1) in the third shell ring of the reactor pressure vessel (RPV).

The applicant identifies that the EMA was needed because the applicant could not sufficiently demonstrate that the USE value of the component would remain above or equal to 50 ft-lb (68 J) at the end of the period of extended operation.

Issue: The letter of July 29, 2015, did not include the EMA as an enclosure or reference the plant records containing the EMA and the NRC safety evaluation issued in approval of the EMA Therefore, the staff cannot tell whether the referenced EMA was previously approved by the staff. Additionally, the submittal did not provide the USE value for the plate made from Heat No.

C2779-1 at 54 effective full power years (EFPY) in the revision of LRA Table 4.2-2.

Request: (1) Clarify whether the EMA for the referenced RPV shell plate (as referenced in Note 10 of LRA Table 4.2-2) was submitted and approved by the NRC. If so, identify the date of the staffs safety evaluation (and if available, the ADAMS Accession No. or NRC microfiche Accession No. associated with the safety evaluation) that approved the EMA for incorporation into the licensing basis. Identify the lower bound end-of-life USE value that was approved in the EMA for BWR RPV plate materials. (2) Identify the USE value for the shell plate made from Heat No. C2779-1 at 54 EFPY.

Discussion The staff and the applicant discussed the RAI responses associated with the updated USE analysis, along with staff questions, comments, schedule impacts and a resolution. Based on the discussion with the applicant, the staff indicated that the response to this RAI requires clarification. The applicant agreed to clarify by submitting an amended response to RAI Set 53.

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 January 12, 2016 LICENSEE:

Entergy Operations, Inc.

FACILITY:

Grand Gulf Nuclear Station, Unit 1

SUMMARY

OF TELEPHONE CONFERENCE CALL HELD ON DECEMBER 8, 2015 BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND ENTERGY OPERATIONS, INC., CONCERNING REQUEST FOR ADDITIONAL INFORMATION PERTAINING TO THE GRAND GULF NUCLEAR STATION LICENSE RENEWAL APPLICATION (TAC NO. ME7493)

The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of Entergy Operations, Inc. (Entergy or the applicant) held a telephone conference call on December 8, 2015, to discuss and clarify the staffs request for additional information (RAI) concerning the Grand Gulf Nuclear Station license renewal application. The telephone conference call was useful in discussing and clarifying the staffs concerns with the responses to the RAI.

provides a listing of the participants and Enclosure 2 contains a listing of the RAI discussed with the applicant, including a brief description on the status of the items.

The applicant had an opportunity to comment on this summary.

/RA/

Rebecca Richardson, Project Manager Projects Branch 1 Division of License Renewal Office of Nuclear Reactor Regulation Docket No. 50-416

Enclosures:

1. List of Participants

2. Summary of Telephone Conference Call cc w/encls: Listserv

ML15355A034 Publicly Available Non-Publicly A

il bl Sensitive Non-Sensitive To receive a copy of this document, indicate in the concurrence box C = Copy without attach/encl, E = Copy with attach/encl, N = No copy OFFICE LA:DLR PM:RPB1:DLR BC:RPB1:DLR PM: RPB1:DLR NAME IBetts RRichardson YDiaz-Sanabria RRichardson DATE 1/ 5 /16 1/ 8 /16 1/ 12 /16 1/ 12 /16

SUMMARY

OF TELEPHONE CONFERENCE CALL HELD ON DECEMBER 8, 2015 BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND ENTERGY OPERATIONS, INC., CONCERNING REQUEST FOR ADDITIONAL INFORMATION PERTAINING TO THE GRAND GULF NUCLEAR STATION, LICENSE RENEWAL APPLICATION (TAC NO. ME7493)

DISTRIBUTION:

EMAIL:

PUBLIC RidsNrrDlr Resource RidsNrrDlrRpb1 Resource RidsNrrDlrRpb2 Resource RidsNrrDlrRarb Resource RidsNrrDlrRasb Resource RidsOgcMailCenter RidsNrrPMGrandGulf Resource RRichardson DDrucker JDanna AWang RSmith, RIV BRice, RIV DMcIntyre, OPA

ENCLOSURE 1 TELEPHONE CONFERENCE CALL GRAND GULF NUCLEAR STATION, UNIT 1 LICENSE RENEWAL APPLICATION LIST OF PARTICIPANTS DECEMBER 8, 2015 PARTICIPANTS AFFILIATION Yoira Diaz-Sanabria U.S. Nuclear Regulatory Commission (NRC)

Allen Hiser NRC James Medoff NRC Rebecca Richardson NRC Lori Tilly General Electric-Hitachi Keith Brinson Entergy Operations, Inc. (Entergy)

Alan Cox Entergy Kirk Ehren Entergy David Lach Entergy Richard Scarbrough Entergy Andrew Taylor Entergy Gary Young Entergy

ENCLOSURE 2

SUMMARY

OF TELEPHONE CONFERENCE CALL GRAND GULF NUCLEAR STATION, UNIT 1 LICENSE RENEWAL APPLICATION DECEMBER 8, 2015 The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of Entergy Operations, Inc. (Entergy or the applicant), held a telephone conference call on December 8, 2015, to discuss Set 53 Request for Additional Information (RAI) responses associated with the upper shelf energy (USE) assessment for the Grand Gulf Nuclear Station license renewal application (LRA). The telephone conference call was useful in discussing and clarifying the staffs concerns with the responses to the RAI.

RAI 4.2.3-2

Background:

By letter dated July 29, 2015 (ADAMS Accession No. ML15212A747), the applicant updated the USE analysis for Grand Gulf Nuclear Station, which has been identified as a Time Limited Aging Analyses for the LRA. The updated USE analysis (i.e., LRA Table 4.2-2 and Note 10 of this table) identifies that the applicant performed an equivalent margins analysis (EMA) for a specific plate component (made from Heat No. C2779-1) in the third shell ring of the reactor pressure vessel (RPV).

The applicant identifies that the EMA was needed because the applicant could not sufficiently demonstrate that the USE value of the component would remain above or equal to 50 ft-lb (68 J) at the end of the period of extended operation.

Issue: The letter of July 29, 2015, did not include the EMA as an enclosure or reference the plant records containing the EMA and the NRC safety evaluation issued in approval of the EMA Therefore, the staff cannot tell whether the referenced EMA was previously approved by the staff. Additionally, the submittal did not provide the USE value for the plate made from Heat No.

C2779-1 at 54 effective full power years (EFPY) in the revision of LRA Table 4.2-2.

Request: (1) Clarify whether the EMA for the referenced RPV shell plate (as referenced in Note 10 of LRA Table 4.2-2) was submitted and approved by the NRC. If so, identify the date of the staffs safety evaluation (and if available, the ADAMS Accession No. or NRC microfiche Accession No. associated with the safety evaluation) that approved the EMA for incorporation into the licensing basis. Identify the lower bound end-of-life USE value that was approved in the EMA for BWR RPV plate materials. (2) Identify the USE value for the shell plate made from Heat No. C2779-1 at 54 EFPY.

Discussion The staff and the applicant discussed the RAI responses associated with the updated USE analysis, along with staff questions, comments, schedule impacts and a resolution. Based on the discussion with the applicant, the staff indicated that the response to this RAI requires clarification. The applicant agreed to clarify by submitting an amended response to RAI Set 53.