ML14293A838

Summary of Telephone Conference Call Held Between NRC and DTE Electric Co., Concerning Draft Requests for Additional Information 2.4-1, 2.4-2, 2.4-3, and 3.5.2.2.2.1-1 Pertaining to Fermi, Unit 2, License Renewal Application

ML14293A838
Person / Time
Site:	Fermi
Issue date:	11/10/2014
From:	Melendez-Colon D License Renewal Projects Branch 1
To:	DTE Electric Company
Melendez-Colon D, 301-415-3301
References
TAC MF4222
Download: ML14293A838 (7)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 November 10, 2014 LICENSEE:

DTE Electric Company FACILITY:

Fermi 2 Nuclear Power Plant

SUMMARY

OF TELEPHONE CONFERENCE CALL HELD ON SEPTEMBER 9, 2014, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND DTE ELECTRIC COMPANY, CONCERNING DRAFT REQUESTS FOR ADDITIONAL INFORMATION 2.4-1, 2.4-2, 2.4-3, and 3.5.2.2.2.1-1 PERTAINING TO THE FERMI 2 NUCLEAR POWER PLANT, LICENSE RENEWAL APPLICATION (TAC. NO. MF4222)

The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of DTE Electric Company held a telephone conference call on September 9, 2014, to discuss and clarify the staffs draft requests for additional information (D-RAIs) 2.4-1, 2.4-2, 2.4-3, and 3.5.2.2.2.1-1 concerning the Fermi 2 Nuclear Power Plant, license renewal application. The telephone conference call was useful in clarifying the intent of the staffs D-RAIs.

provides a listing of the participants and Enclosure 2 contains a summary of the discussion, including a brief description on the status of the items.

The applicant had an opportunity to comment on this summary.

/RA/

Daneira Meléndez-Colón, Project Manager Projects Branch 1 Division of License Renewal Office of Nuclear Reactor Regulation Docket No. 50-341

Enclosures:

1. List of Participants

2. Summary of the Discussion cc w/encls: Listserv

ML14293A838

• Concurred via e-mail OFFICE LA:DLR:RPB1 PM:DLR:RPB1 PM:DLR:RPB1 BC:RPB1:DLR PM:DLR:RPB1 NAME

• YEdmonds DMelendez-Colon ESayoc YDiaz-Sanabria DMelendez-Colon DATE 11/3/14 11/5/14 11/5/14 11/7/14 11/10/14

ENCLOSURE 1 TELEPHONE CONFERENCE CALL FERMI 2 NUCLEAR POWER PLANT LICENSE RENEWAL APPLICATION LIST OF PARTICIPANTS September 9, 2014 PARTICIPANTS AFFILIATIONS Daneira Meléndez-Colón U.S. Nuclear Regulatory Commission (NRC)

John Daily NRC Robert Pettis NRC Juan López NRC Alice Erickson NRC Lynne Goodman DTE Electric Company (DTE)

John Tibai DTE Kevin Lynn DTE Dave Lach Entergy Reza Ahrabli Entergy

ENCLOSURE 2 DRAFT REQUESTS FOR ADDITIONAL INFORMATION FERMI 2 NUCLEAR POWER PLANT LICENSE RENEWAL APPLICATION September 9, 2014 The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of DTE Electric Company held a telephone conference call on September 9, 2014, to discuss and clarify the following draft requests for additional information (D-RAIs) concerning the license renewal application (LRA).

D-RAI 2.4-1

Background:

Table 2.3.2-2, Residual Heat Removal System, of the LRA, does not list expansion joint bellows as a component type subject to an Aging Management Review (AMR).

Issue:

However, Table 2.4-4, Bulk Commodities, lists compressible joints and seals as a component type subject to an AMR.

Request:

Please confirm that this component type includes the use of expansion joint bellows. If installed in the residual heat removal system, provide the locations where they are covered, and whether they are subject to an AMR, pursuant to Title 10 of the Code of Federal Regulations (10 CFR) 54.21(a)(1)(i).

Discussion:

The staff provided clarification related to its concern in the D-RAI. The applicant discussed that the bellows are part of the structure and not considered part of the residual heat removal system.

The applicant understands the staffs concerns and will provide a response to the D-RAI.

The staff will issue the RAI.

D-RAI 2.4-2

Background:

In the Updated Final Safety Analysis Report (UFSAR) Section 3.4.4, Flood Protection, and Section 3.4.4.1, Reactor Building Structure, discuss the use of watertight seals and water stops for flood protection of Category I structures.

ENCLOSURE 2 Issue:

However, a review of the tables in the LRA did not identify such components for in-scope structures as credited for flood protection and subject to an AMR.

Request:

If present, clarify the location within the LRA where they are covered and the corresponding AMR. If not included in the LRA, please justify their exclusion from the scope of license renewal, pursuant to 10 CFR 54.4.

Discussion:

The staff provided clarification related to the type of seals referred to by this request.

The applicant understands the staffs concerns and will provide a response to the D-RAI.

The staff will issue the RAI.

D-RAI 2.4-3

Background:

Section 2.4.2, Water-Control Structures, of the LRA, and UFSAR Section 9.2.1, General Service Water (GSW) System, state that Traveling screens and stationary racks are provided to keep floating debris from entering the GSW intake pit.

Issue:

However, such components are not included in Table 2.4-2, Water-Control Structures, or Table 2.4-4, Bulk Commodities.

Request:

If such components are relied upon and perform an intended function, please identify the section of the LRA where they are covered, as well as their applicable aging effects, and the Aging Management Program (AMP) related to these components. If not included in the LRA, please justify their exclusion from the scope of license renewal. Also, please clarify if there are any additional trash racks, basket strainers, traveling screens or any other debris prevention or removing mechanisms that are part of any in-scope structures, subject to 10 CFR 54.4.

Discussion:

The staff provided clarification related to its concern in the draft RAI. The applicant discussed that these components are inside the structure and are not part of the structure.

The applicant understands the staffs concerns and will provide a response to the D-RAI.

The staff will issue the RAI.

ENCLOSURE 2 D-RAI 3.5.2.2.2.1-1

Background:

SRP-LR Section 3.5.3.2.2.1, item 1, associated with SRP-LR Table 3.5-1, item 42, states that loss of material and cracking due to freeze-thaw could occur in inaccessible concrete areas of Groups 1-3, 5, and 7-9 structures. Structure monitoring programs may not be sufficient for plants located in moderate to severe weathering conditions; for these situations further evaluation is needed. The SRP-LR further states that a plant-specific program is not required if documented evidence confirms that the existing concrete has air content between 3 and 8 percent and inspections have not identified degradation related to freeze-thaw.

Issue:

In LRA Table 3.5.1, item 3.5.1-42, the applicant stated that freeze-thaw does not require management. In the associated further evaluation section (3.5.2.2.2.1, item 1), the applicant stated that Fermi 2 Groups 1-3, 5, and 7-9 concrete structures are located in a region where weathering conditions are considered severe. The severe weather condition means that freeze-thaw is a credible aging mechanism that should be managed by the applicant. LRA Section 3.5.2.2.2.1, item 1 also states that Fermi 2 specifications require an air-entraining agent to be used in concrete subject to weathering; therefore, the specifications provide a durable concrete that is not subject to freeze-thaw aging effects. Section 54.21(a)(3) of 10 CFR 54.21(a)(3) requires the applicant to demonstrate that the effects of aging for structures and components subject to an AMR will be adequately managed so that the intended function will be maintained consistent with the current licensing basis for the period of extended operation.

However, the applicant did not provide documented evidence which confirms the existing concrete has air content of 3 to 8 percent, nor discuss results of past inspections that demonstrate freeze-thaw degradation is not an issue.

Request:

1. Provide documentation that demonstrates whether the air content values on Groups 1-3, 5, and 7-9 structures are between 3 and 8 percent.

2. If evidence is unavailable that demonstrates air content between 3 and 8 percent, provide an alternative technical basis for not proposing a plant-specific program or provide a description of a plant-specific program to manage the aging effects of freeze-thaw on Groups 1-3, 5, and 7-9 structures.

3. Describe the results of past inspections and whether or not past inspections have identified degradation that was attributed to freeze-thaw degradation.

Discussion:

The staff provided clarification related to its request in D-RAI 3.5.2.2.2.1-1 and stated it will revise request No. 1 as follows:

Confirm whether the air content values on Groups 1-3, 5, and 7-9 structures are between 3 and 8 percent.

The applicant understands the staffs concerns and will provide a response to the draft RAI.

The RAI will be issued as revised.

SUMMARY

OF TELEPHONE CONFERENCE CALL HELD ON SEPTEMBER 9, 2014, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND DTE ELECTRIC COMPANY, CONCERNING DRAFT REQUESTS FOR ADDITIONAL INFORMATION 2.4-1, 2.4-2, 2.4-3, and 3.5.2.2.2.1-1 PERTAINING TO THE FERMI 2 NUCLEAR POWER PLANT, LICENSE RENEWAL APPLICATION (TAC. NO. MF4222)

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PUBLIC RidsNrrDlr Resource RidsNrrDlrRpb1 Resource RidsNrrDlrRpb2 Resource RidsNrrDlrRerb Resource RidsNrrDlrRarb Resource RidsNrrDlrRasb Resource RidsNrrDlrRsrg Resource RidsNrrPMFermi2 Resource D. Melendez-Colon Y. Diaz-Sanabria L. Perkins B. Wittick D. McIntyre, OPA C. Kanatas, OGC D. Roth, OGC M. Kunowski, RIII B. Kemker, RIII V. Mitlyng, RIII P. Chandrathil, RIII A. Stone, RIII S. Sheldon, RIII