ML12214A548

7/18/12 Summary of Telephone Conference Call Held Between the U.S. Nuclear Regulatory Commission and Entergy Operations, Inc., Concerning Requests for Additional Information Pertaining to the Grand Gulf Nuclear Station, LRA

ML12214A548
Person / Time
Site:	Grand Gulf
Issue date:	09/14/2012
From:	Ferrer N License Renewal Projects Branch 1
To:
Ferrer N, 415-1045
References
TAC ME7493
Download: ML12214A548 (6)

Text

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LICENSEE: Entergy Operations, Inc.

FACILITY: Grand Gulf Nuclear Station

SUMMARY

OF TELEPHONE CONFERENCE CALL HELD ON JULY 18, 2012, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND ENTERGY OPERATIONS, INC., CONCERNING REQUESTS 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., held a telephone conference call on July 18, 2012, to discuss and clarify the staff's requests for additional information (RAls) concerning the Grand Gulf Nuclear Station license renewal application. The telephone conference call was useful in clarifying the intent of the staffs RAls.

Enclosure 1 provides a listing of the participants and Enclosure 2 contains a listing of the RAls discussed with the applicant, including a brief description on the status of the items.

The applicant had an opportunity to comment on this summary.

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

Enclosures:

As stated cc w/encls: Listserv

TELEPHONE CONFERENCE CALL GRAND GULF NUCLEAR STATION LICENSE RENEWAL APPLICATION LIST OF PARTICIPANTS July 18, 2012 PARTICIPANTS AFFILIATIONS Nate Ferrer U.S. Nuclear Regulatory Commission (NRC)

Abdul Sheikh NRC Ted Ivy Entergy Operations, Inc. (Entergy)

Abdolreza Ahrabli Entergy Herbert Rideout Entergy ENCLOSURE 1

REQUESTS FOR ADDITIONAL INFORMATION (SETS 29)

GRAND GULF NUCLEAR STATION LICENSE RENEWAL APPLICATION July 18, 2012 The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of Entergy Operations, Inc. held a telephone conference call on July 18, 2012, to discuss and clarify the following requests for additional information (RAls) concerning the license renewal application (LRA).

Draft RAJ 8.1.13-1 a Background. LRA Section B.1.13, states that the Containment Inservice Inspection -IWE Program is consistent with GALL Report AMP XLS1, ASME Section XI, Subsection IWE.

According to GALL Report AMP XI. S 1, the scope of IWE program includes the components of steel containments and steel liners of concrete containments specified in Subsection IWE-1000 as augmented by LR-ISG-2006-01. The components within the scope of Subsection IWE are Class MC pressure-retaining components (steel containments) and their integral attachments, metallic shell and penetration liners of Class CC containments and their integral attachments, containment moisture barriers, containment pressure-retaining bolting, and metal containment surface areas, including welds and base metal.

UFSAR Section 3.8.1.1, states that the containment consists of flat circular foundation mat, right circular cylinder, and hemispherical dome. This is clear from UFSAR Figures 3.8-1. 3.8-4a, and 3.8-118 thru 3.8-124. UFSAR Section 3.8.1.1.2, "Containment Liner Plate," states the internal surface of the containment is completely lined with welded steel plate. It further states that the suppression pool area of the containment liner has been fabricated out of stainless steel which serves as a fission product barrier. The stainless steel liner plate has also been designed to withstand the negative pressure loads due to quencher discharge bubble pressure.

Issue. In response to RAI B.1.13-1, the applicant stated that the suppression pool liner plate, which is backed by concrete, is not a part of the containment pressure retaining boundary and was not designed in accordance with ASME Section III, Division 1. The application further stated that the suppression pool is inspected under the Structures Monitoring Program, but is inspected using a procedure that is also used for Containment Inservice Inspection-IWE Program. The applicant further stated that ASME Section XI, Subsection IWE, is not applicable to the area of the pits since this portion of the suppression pool liner plate is not a pressure boundary component.

The RAI response, as noted above, is inconsistent with the GALL Report AMP XI.S1 and IWE-1100. Both of these documents specifically include metallic shell liner of concrete containment pressure retaining components and their integral attachments within the scope of IWE inspection program. The IWE inspection report of April 2007 for the suppression pool liner plate identified loss of thickness at more than 100 locations in the base slab and walls of the concrete containment portion of the suppression pool liner plate. The loss of thickness was more than 10 percent.

IWE-3122.3(b) states that, "When flaws or areas of degradation are accepted by engineering evaluation, the area containing the flaw or degradation shall be reexamined in accordance with IWE-2420(b), (c) and (d). IWE-2420(b) require that, "When examination results require evaluation of flaws or areas of degradation in accordance with IWE-3000 or IWE-2500(d), and ENCLOSURE 2

-2 the component is acceptable for continued service, the area containing such flaws or area of degradation shall be reexamined during the next inspection period listed in the schedule of the inspection program of IWE-2411 or IWE-2412, in accordance with Table IWE-2500-1, examination category E-C."

Request.

a. Provide justification for inspecting base slab and wall liner plate of the suppression pool, which is an integral part of the concrete containment, in accordance with Structures Monitoring Program. As part of the justification, explain how LRA AMP 8.1.13, "Containment Inservice Inspection -IWE Program," is consistent with GALL Report AMP XI.S1.

b. Explain the reason for not performing the augmented inspection required by IWE-2420 and Table IWE-2500-1, examination category E-C.

Discussion: The applicant stated that it was unclear what justification request (a) was asking for. The staff was requesting justification for the applicant's use of the Structures Monitoring Program instead of the Containment Inservice Inspection-IWE Program. The applicant also stated that it was unclear what inspection request (b) was referring to. The staff was referring to the inspection of the suppression pool liner plate. The staff will reword the request section as follows:

Request.

a. Provide justification for inspecting base slab and wall liner plate of the suppression pool, which is an integral part of the concrete containment, in accordance with the Structures Monitoring Program instead of the Containment Inservice Inspection -IWE Program. As part of the justification, explain how the Containment Inservice Inspection-IWE Program is consistent with GALL Report AMP XI.S1.

b. Explain the reason for not performing the augmented inspection of the suppression pool liner plate, required by IWE-2420 and Table IWE-2500-1, examination category E-C.

The staff will issue the revised question as a formal RAI.

September 14,2012 LICENSEE: Entergy Operations, Inc.

FACILITY; Grand Gulf Nuclear Station

SUMMARY

OF TELEPHONE CONFERENCE CALL HELD ON JULY 18, 2012, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND ENTERGY OPERATIONS, INC., CONCERNING REQUESTS 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., held a telephone conference call on July 18, 2012, to discuss and clarify the staff's requests for additional information (RAls) concerning the Grand Gulf Nuclear Station, license renewal application. The telephone conference call was useful in clarifying the intent of the staff's RAls. provides a listing of the participants and Enclosure 2 contains a listing of the RAls discussed with the applicant, including a brief description on the status of the items.

The applicant had an opportunity to comment on this summary.

IRA!

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

Enclosures:

As stated cc w/encls: Listserv DISTRIBUTION: See next page ADAMS Accession No'.. ML12214A548 *concurrence via email I

OFFICE PM:RPB1 :DLR LA:RPB2: DLR* BC:RPB1 :DLR PM:RPB1 :DLR i NAME NFerrer IKing DMorey NFerrer i DATE 9/7/12 8/7/12 9/10/12 9/14/12 I OFFICIAL RECORD COpy

Memorandum to Entergy Operations, Inc. from Nathaniel Ferrer dated September 14,2012

SUMMARY

OF TELEPHONE CONFERENCE CALL HELD ON JULY 18, 2012 BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND ENTERGY OPERATIONS, INC., CONCERNING REQUESTS FOR ADDITIONAL INFORMATION PERTAINING TO THE GRAND GULF NUCLEAR STATION, LICENSE RENEWAL APPLICATION (TAC. NO. ME7493)

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