ML15092A243

Summary of Telephone Conference Call Held on November 19, 2014, Between the U.S. Nuclear Regulatory Commission and DTE Electric Concerning Set 7 - November 19, 2014

ML15092A243
Person / Time
Site:	Farley
Issue date:	04/22/2015
From:	Melendez-Colon D Division of License Renewal
To:	DTE Electric Company
Melendez-Colon D
References
DLR-15-0180, TAC MF4222
Download: ML15092A243 (6)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 April 22, 2015 LICENSEE:

DTE Electric Company FACILITY:

Fermi 2

SUMMARY

OF TELEPHONE CONFERENCE CALL HELD ON NOVEMBER 19, 2014, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND DTE ELECTRIC COMPANY, CONCERNING REQUESTS FOR ADDITIONAL INFORMATION, SET 7 PERTAINING TO THE FERMI 2 LICENSE RENEWAL APPLICATION (TAC NO. MF4222)

The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of DTE Electric Company (DTE or the applicant) held a telephone conference call on November 19, 2014, to discuss and clarify the staffs draft request for additional information (DRAI) B.1.8-2 concerning the Fermi 2 license renewal application. The telephone conference call was useful in clarifying the intent of the staffs DRAI.

provides a listing of the participants and Enclosure 2 contains the DRAI 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/

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 Telephone Conference Call cc w/encls: Listserv

LICENSEE:

DTE Electric Company FACILITY:

Fermi 2

SUMMARY

OF TELEPHONE CONFERENCE CALL HELD ON NOVEMBER 19, 2014, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND DTE ELECTRIC COMPANY, CONCERNING REQUESTS FOR ADDITIONAL INFORMATION, SET 7 PERTAINING TO THE FERMI 2 LICENSE RENEWAL APPLICATION (TAC NO. MF4222)

The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of DTE Electric Company (DTE or the applicant) held a telephone conference call on November 19, 2014, to discuss and clarify the staffs draft request for additional information (DRAI) B.1.8-2 concerning the Fermi 2 license renewal application. The telephone conference call was useful in clarifying the intent of the staffs DRAI.

provides a listing of the participants and Enclosure 2 contains the DRAI 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/

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 Telephone Conference Call cc w/encls: Listserv DISTRIBUTION: See next page Accession Number: ML15092A243

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

DMeléndez-Colón JDaily YDiaz-Sanabria DMeléndez-Colón DATE 4/15/15 4/16/15 4/17/15 4/ 22 /15 4/ 22/15 OFFICIAL RECORD COPY

SUMMARY

OF TELEPHONE CONFERENCE CALL HELD ON NOVEMBER 19, 2014, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND DTE ELECTRIC COMPANY, CONCERNING REQUESTS FOR ADDITIONAL INFORMATION, SET 7 PERTAINING TO THE FERMI 2 LICENSE RENEWAL APPLICATION (TAC NO. MF4222)

DISTRIBUTION:

E-MAIL:

PUBLIC RidsNrrDlr Resource RidsNrrDlrRpb1 Resource RidsNrrDlrRpb2 Resource RidsNrrDlrRerb Resource RidsNrrDlrRarb Resource RidsNrrDlrRasb Resource RidsNrrDlrRsrg Resource RidsNrrPMFermi2 Resource D. Melendez-Colon Y. Diaz-Sanabria E. Keegan B. Wittick B. Harris, OGC D. Roth, OGC M. Kunowski, RIII B. Kemker, RIII V. Mitlyng, RIII P. Chandrathil, RIII

TELEPHONE CONFERENCE CALL FERMI 2 LICENSE RENEWAL APPLICATION LIST OF PARTICIPANTS NOVEMBER 19, 2014 PARTICIPANTS AFFILIATIONS Daneira Meléndez-Colón U. S. Nuclear Regulatory Commission (NRC)

Seung Min NRC Lynne Goodman DTE Electric Company (DTE)

Kevin Lynn DTE Al Brooks DTE ENCLOSURE 1

SUMMARY

OF TELEPHONE CONFERENCE CALL FERMI 2 LICENSE RENEWAL APPLICATION NOVEMBER 19, 2014 The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of DTE Electric Company (DTE or the applicant) held a telephone conference call on November 19, 2014, to discuss and clarify the following draft request for additional information (DRAI) concerning the Fermi 2 license renewal application (LRA).

DRAI B.1.8-2

Background:

License Renewal Application Section B.1.8 states that the applicants BWR Stress Corrosion Cracking Program is consistent with Generic Aging Lessons Learned (GALL) Report Aging Management Program (AMP) XI.M7, BWR Stress Corrosion Cracking. In its review of the applicants program and related information, the staff noted that the following references indicate that the applicants condensate and feedwater systems include 24 Category D welds per Generic Letter (GL) 88-01 (i.e., welds with materials non-resistant to intergranular stress corrosion cracking and with no stress improvement process).

Letter from the Detroit Edison Company to the NRC (NRC-92-0090), Fermi 2 Response to Generic Letter 88-01, Supplement 1, NRC Position on Intergranular Stress Corrosion Cracking (IGSCC) in BWR Austenitic Stainless Steel Piping, July 29, 1992 Letter from the NRC to the Detroit Edison Company, Fermi-2 Removal of 24 Condensate and Feedwater System Welds from the Inservice Inspection Nondestructive Examination (ISI-NDE) Program (TAC No. M84177), December 18, 1992 The staff also noted that the following tables of the LRA describe the applicants aging management review (AMR) items for the condensate and feedwater systems.

Table 3.4.2-3-2, Condensate System, Nonsafety-Related Components Affecting Safety-Related Systems Table 3.4.2-2, Feedwater and Standby Feedwater System Table 3.4.2-3-3, Feedwater and Standby Feedwater System, Nonsafety-Related Components Affecting Safety-Related Systems Issue:

The staff noted that the AMR tables for the condensate and feedwater systems in the LRA do not include any AMR items to manage IGSCC for the Category D welds that were identified in the 1992 communications between the Detroit Edison Company and NRC. The staff cannot determine the adequacy of the applicants program and AMR results without additional information to justify the omission of relevant AMR items.

ENCLOSURE 2

The staff also noted that the 1992 communications indicate that these Category D welds are located outboard of the containment isolation valves and at least 10 percent of these welds should be inspected during each refueling outage as part of the applicants inservice inspection.

The staff further noted that the extent and frequency of the applications inspections are different from the inspection guidance provided in GL 88-01 and BWRVIP-75-A. For example, BWRVIP-75-A states that in the case of the implementation of hydrogen water chemistry 100 percent of Category D welds should be inspected every 10 years and at least 50 percent of these welds should be inspected in the first 6 years. However, the LRA does not identify this difference as a program exception.

Request:

1. Explain whether or not the condensate and feedwater systems include Category D welds.

Provide adequate justification for why the LRA AMR tables for condensate and feedwater systems do not include AMR items to manage IGSCC for the Category D welds.

2. Clarify why the LRA does not identify the inspection extent and frequency for Category D welds as a program exception to GALL Report AMP XI.M7. In addition, provide technical justification for why the inspection extent and frequency for Category D welds are acceptable for adequate aging management. As part of the response, discuss whether the plant-specific operating experience, including inspection results, justify the adequacy of aging management for Category D welds.

Discussion:

The staff provided clarification related to its concerns in draft RAI B.1.8-2.

The applicant and the staff discussed the inspection scope and the frequency for the Category D welds in the condensate and feedwater systems. The discussion also included the inspection scope per Generic Letter 88-01 for the reactor water cleanup system welds.

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

This request will be sent as a formal RAI.