ML16005A399: Difference between revisions

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=Text=
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{{#Wiki_filter:UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001  
{{#Wiki_filter:UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001  


LICENSEE: DTE Electric Company  
LICENSEE: DTE Electric Company  
Line 25: Line 25:


==SUBJECT:==
==SUBJECT:==
SUMMARY OF TELEPHONE CONFERENCE CALL HELD ON DECEMBER 15, 2015, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND DTE ELECTRIC COMPANY CONCERNING THE RESPONSE TO REQUEST FOR ADDITIONAL INFORMATON 4.3.3-3 PERTAINING TO THE FERMI 2 LICENSE RENEWAL APPLICATION (TAC NO. MF4222)  The U.S. Nuclear Regulatory Commission and representatives of DTE Electric Company (the applicant) held a telephone conference call on December 15, 2015, to discuss and clarify the applicant's response to request for additional information 4.3.3-3 concerning the Fermi 2 license renewal application. Enclosure 1 provides a listing of the participants and Enclosure 2 contains a listing of the items discussed with the applicant, including a brief description on their status.
SUMMARY OF TELEPHONE CONFERENCE CALL HELD ON DECEMBER 15, 2015, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND DTE ELECTRIC COMPANY CONCERNING THE RESPONSE TO REQUEST FOR ADDITIONAL INFORMATON 4.3.3-3 PERTAINING TO THE FERMI 2 LICENSE RENEWAL APPLICATION (TAC  


The applicant had an opportunity to comment on this summary.        /RA Samuel Cuadrado Acting for/   Daneira Meléndez-Colón, Project Manager Projects Branch 1  Division of License Renewal Office of Nuclear Reactor Regulation Docket No. 50-341  
NO. MF4222)
The U.S. Nuclear Regulatory Commission and representatives of DTE Electric Company (the applicant) held a telephone conference call on December 15, 2015, to discuss and clarify the applicant's response to request for additional information 4.3.3-3 concerning the Fermi 2 license renewal application.
Enclosure 1 provides a listing of the participants and Enclosure 2 contains a listing of the items discussed with the applicant, including a brief description on their status.
 
The applicant had an opportunity to comment on this summary.  
       /RA Samuel Cuadrado Acting for/
Daneira Meléndez-Colón, Project Manager Projects Branch 1  Division of License Renewal Office of Nuclear Reactor Regulation  
 
Docket No. 50-341  


==Enclosures:==
==Enclosures:==
Line 33: Line 41:
: 2. Summary of Telephone Conference Call  
: 2. Summary of Telephone Conference Call  


cc w/encl: Listserv January 8, 2016   
cc w/encl: Listserv  
 
January 8, 2016   
 
ML16005A399 Publicly AvailableNon-Publicly Available SensitiveNon-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:RPB1:DLR  PM:RPB1:DLR BC:RPB1:DLR PM:RPB1:DLR NAME IBetts (Samuel Cuadrado for)
DMeléndez-Colón (Lois James for)
YDiaz-Sanabria (Samuel Cuadrado for)
DMeléndez-Colón DATE 1/ 7 /16 1/ 8 /16 1/ 8 /16 1/ 8 /16 ENCLOSURE 1 TELEPHONE CONFERENCE CALL FERMI 2 LICENSE RENEWAL APPLICATION LIST OF PARTICIPANTS DECEMBER 15, 2015 PARTICIPANT AFFILIATIONDaneira Meléndez-Colón U.S. Nuclea rRegulatory Commission (NRC)Allen Hise r NRCChristopher Hovanec NRCSamuel Cuadrado De Jesús NRC
 
Gary Stevens NRC Lynne Goodman DTE Electric Com pany (DTE) Kevin Lynn DTEDave Gerbe r Structural Inte grityTerry Herrmann Structural Inte grityTim Gilman Structural Inte grity
 
ENCLOSURE 2 SUMMARY OF TELEPHONE CONFERENCE CALL FERMI 2 LICENSE RENEWAL APPLICATION DECEMBER 15, 2015
 
The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of DTE Electric Company (DTE or the applicant) held a telephone conference on December 15, 2015, to discuss and clarify the applicant's response to request for additional information (RAI) 4.3.3-3 concerning the license renewal application (LRA).
 
===Background===
:  By letter dated September 24, 2015, the applicant provided its response to RAI 4.3.3-3. In this letter, the applicant stated that there are locations where the environmental fatigue life correction factors (F en) were recalculated using average transient temperatures or maximum operating temperatures. The applicant also stated that these F en factors were recalculated in a manner consistent with NUREG/CR-6909, "Effect of LWR Coolant Environments on the Fatigue
 
Life of Reactor Materials."
Based on the RAI response, the staff needs clarification regarding how the average transient temperatures were calculated in the applicant's screening and F en evaluations and where average and maximum temperatures were used in the evaluations. The staff is unable to determine if the average transient temperatures were calculated appropriately considering the threshold temperature. In addition, the staff is unable to determine if use of the average temperatures were limited to simple transients.
 
Discussion
:
During a conference call held on December 15, 2015, the applicant and the staff discussed three methods to determine the average temperature values used to calculate the F en factors. One method was based on minimum transient temperatures above the temperature threshold.
A second method was based on minimum transient temperatures below the temperature threshold. The applicant stated that a third method used the minimum transient temperature instead of the threshold temperature to calculate the average temperature and, if the resulting temperature was less than the threshold temperature, then the threshold temperature was used to calculate the F en factor. 


ML16005A399  Publicly AvailableNon-Publicly Available                  SensitiveNon-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:RPB1:DLR  PM:RPB1:DLR BC:RPB1:DLR PM:RPB1:DLR NAME IBetts (Samuel Cuadrado for) DMeléndez-Colón (Lois James for) YDiaz-Sanabria (Samuel Cuadrado for)DMeléndez-Colón DATE 1/ 7 /16 1/ 8 /16 1/ 8 /16 1/ 8 /16 ENCLOSURE 1 TELEPHONE CONFERENCE CALL FERMI 2 LICENSE RENEWAL APPLICATION  LIST OF PARTICIPANTS DECEMBER 15, 2015  PARTICIPANT AFFILIATIONDaneira Meléndez-Colón U.S. NuclearRegulatory Commission (NRC)Allen Hiser NRCChristopher Hovanec NRCSamuel Cuadrado De Jesús NRC Gary Stevens NRCLynne Goodman DTE Electric Company (DTE) Kevin Lynn DTEDave Gerber Structural IntegrityTerry Herrmann Structural IntegrityTim Gilman Structural Integrity
The staff stated that the first two methods for calculating average temperature are consistent with NUREG/CR-6909, however the third approach is not consistent with NUREG/CR-6909. The staff stated that the use of a method consistent with NUREG/CR-6909 for the determination of average temperature may have an impact in the applicant's screening and F en evaluations. The staff also stated that for the applicant to address the staff's concerns the following additional information is needed:


ENCLOSURE 2 SUMMARY OF TELEPHONE CONFERENCE CALL FERMI 2 LICENSE RENEWAL APPLICATION DECEMBER 15, 2015 The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of DTE Electric Company (DTE or the applicant) held a telephone conference on December 15, 2015, to discuss and clarify the applicant's response to request for additional information (RAI) 4.3.3-3 concerning the license renewal application (LRA).
a) Identification of all locations that used an average temperature to calculate the F en factor, including locations which are not identified as sentinel locations.
b) Description regarding whether the revised average temperature calculations impacts the selection of sentinel locations.
c) Confirmation that any revised F en factors and CUF en values are determined in a manner consistent with the guidance of NUREG/CR-6909, as stated in LRA Section 4.3.3, A2.2, and response to RAI 4.3.3-3.  


==Background:==
By letter dated September 24, 2015, the applicant provided its response to RAI 4.3.3-3. In this letter, the applicant stated that there are locations where the environmental fatigue life correction factors (Fen) were recalculated using average transient temperatures or maximum operating temperatures. The applicant also stated that these Fen factors were recalculated in a manner consistent with NUREG/CR-6909, "Effect of LWR Coolant Environments on the Fatigue Life of Reactor Materials."    Based on the RAI response, the staff needs clarification regarding how the average transient temperatures were calculated in the applicant's screening and Fen evaluations and where average and maximum temperatures were used in the evaluations. The staff is unable to determine if the average transient temperatures were calculated appropriately considering the threshold temperature. In addition, the staff is unable to determine if use of the average temperatures were limited to simple transients.
Discussion:
During a conference call held on December 15, 2015, the applicant and the staff discussed three methods to determine the average temperature values used to calculate the Fen factors. One method was based on minimum transient temperatures above the temperature threshold.
A second method was based on minimum transient temperatures below the temperature threshold. The applicant stated that a third method used the minimum transient temperature instead of the threshold temperature to calculate the average temperature and, if the resulting temperature was less than the threshold temperature, then the threshold temperature was used to calculate the Fen factor.
The staff stated that the first two methods for calculating average temperature are consistent with NUREG/CR-6909, however the third approach is not consistent with NUREG/CR-6909. The staff stated that the use of a method consistent with NUREG/CR-6909 for the determination of average temperature may have an impact in the applicant's screening and Fen evaluations. The staff also stated that for the applicant to address the staff's concerns the following additional information is needed:
a) Identification of all locations that used an average temperature to calculate the Fen factor, including locations which are not identified as sentinel locations. b) Description regarding whether the revised average temperature calculations impacts the selection of sentinel locations.
c) Confirmation that any revised Fen factors and CUFen values are determined in a manner consistent with the guidance of NUREG/CR-6909, as stated in LRA Section 4.3.3, A2.2, and response to RAI 4.3.3-3.
The applicant stated that it understood the staff need for additional information and that it may provide the information through a supplement to the LRA. The staff stated that a supplement to the LRA may be adequate; however, the staff may request the information through a follow-up RAI.   
The applicant stated that it understood the staff need for additional information and that it may provide the information through a supplement to the LRA. The staff stated that a supplement to the LRA may be adequate; however, the staff may request the information through a follow-up RAI.   


==SUBJECT:==
==SUBJECT:==
SUMMARY OF TELEPHONE CONFERENCE CALLS HELD ON DECEMBER 15, 2015, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND DTE ELECTRIC COMPANY CONCERNING THE RESPONSE TO REQUEST FOR ADDITIONAL INFORMATON 4.3.3-3 PERTAINING TO THE FERMI 2 LICENSE RENEWAL APPLICATION (TAC NO. MF4222)
SUMMARY OF TELEPHONE CONFERENCE CALLS HELD ON DECEMBER 15, 2015, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND DTE ELECTRIC COMPANY CONCERNING THE RESPONSE TO REQUEST FOR ADDITIONAL INFORMATON 4.3.3-3 PERTAINING TO THE FERMI 2 LICENSE RENEWAL APPLICATION (TAC  
DISTRIBUTION:  E-MAIL: PUBLIC RidsNrrDlr Resource RidsNrrDlrRpb1 Resource RidsNrrDlrRpb2 Resource RidsNrrDlrRerb Resource RidsNrrDlrRarb Resource RidsNrrDlrRasb Resource RidsNrrDlrRsrg Resource RidsNrrPMFermi2 Resource  
 
-----------------
NO. MF4222)  
D. Melendez-Colon E. Keegan J. Danna C. Kanatas, OGC B. Dickson, RIII B. Kemker, RIII P. Smagacz, RIII V. Mitlyng, RIII P. Chandrathil, RIII}}
 
DISTRIBUTION
:  E-MAIL: PUBLIC RidsNrrDlr Resource RidsNrrDlrRpb1 Resource RidsNrrDlrRpb2 Resource  
 
RidsNrrDlrRerb Resource  
 
RidsNrrDlrRarb Resource RidsNrrDlrRasb Resource RidsNrrDlrRsrg Resource RidsNrrPMFermi2 Resource  
-----------------  
 
D. Melendez-Colon  
 
E. Keegan  
 
J. Danna C. Kanatas, OGC B. Dickson, RIII B. Kemker, RIII  
 
P. Smagacz, RIII V. Mitlyng, RIII P. Chandrathil, RIII}}

Revision as of 14:38, 30 June 2018

Summary of Telephone Conference Call Held on December 15, 2015, Between the U.S. Nuclear Regulatory Commission and DTE Electric Company Concerning Fermi 2 License Renewal Application (TAC No. MF4222)
ML16005A399
Person / Time
Site: Fermi DTE Energy icon.png
Issue date: 01/08/2016
From: Melendez-Colon D
License Renewal Projects Branch 1
To:
Melendez-Colon D, NRR/DLR, 415-3301
References
DLR-15-0587, TAC MF4222
Download: ML16005A399 (6)
v • d • e


Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001

LICENSEE: DTE Electric Company

FACILITY: Fermi 2

SUBJECT:

SUMMARY OF TELEPHONE CONFERENCE CALL HELD ON DECEMBER 15, 2015, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND DTE ELECTRIC COMPANY CONCERNING THE RESPONSE TO REQUEST FOR ADDITIONAL INFORMATON 4.3.3-3 PERTAINING TO THE FERMI 2 LICENSE RENEWAL APPLICATION (TAC

NO. MF4222)

The U.S. Nuclear Regulatory Commission and representatives of DTE Electric Company (the applicant) held a telephone conference call on December 15, 2015, to discuss and clarify the applicant's response to request for additional information 4.3.3-3 concerning the Fermi 2 license renewal application.

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

The applicant had an opportunity to comment on this summary.

/RA Samuel Cuadrado Acting for/

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/encl: Listserv

January 8, 2016

ML16005A399 Publicly AvailableNon-Publicly Available SensitiveNon-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:RPB1:DLR PM:RPB1:DLR BC:RPB1:DLR PM:RPB1:DLR NAME IBetts (Samuel Cuadrado for)

DMeléndez-Colón (Lois James for)

YDiaz-Sanabria (Samuel Cuadrado for)

DMeléndez-Colón DATE 1/ 7 /16 1/ 8 /16 1/ 8 /16 1/ 8 /16 ENCLOSURE 1 TELEPHONE CONFERENCE CALL FERMI 2 LICENSE RENEWAL APPLICATION LIST OF PARTICIPANTS DECEMBER 15, 2015 PARTICIPANT AFFILIATIONDaneira Meléndez-Colón U.S. Nuclea rRegulatory Commission (NRC)Allen Hise r NRCChristopher Hovanec NRCSamuel Cuadrado De Jesús NRC

Gary Stevens NRC Lynne Goodman DTE Electric Com pany (DTE) Kevin Lynn DTEDave Gerbe r Structural Inte grityTerry Herrmann Structural Inte grityTim Gilman Structural Inte grity

ENCLOSURE 2 SUMMARY OF TELEPHONE CONFERENCE CALL FERMI 2 LICENSE RENEWAL APPLICATION DECEMBER 15, 2015

The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of DTE Electric Company (DTE or the applicant) held a telephone conference on December 15, 2015, to discuss and clarify the applicant's response to request for additional information (RAI) 4.3.3-3 concerning the license renewal application (LRA).

Background

By letter dated September 24, 2015, the applicant provided its response to RAI 4.3.3-3. In this letter, the applicant stated that there are locations where the environmental fatigue life correction factors (F en) were recalculated using average transient temperatures or maximum operating temperatures. The applicant also stated that these F en factors were recalculated in a manner consistent with NUREG/CR-6909, "Effect of LWR Coolant Environments on the Fatigue

Life of Reactor Materials."

Based on the RAI response, the staff needs clarification regarding how the average transient temperatures were calculated in the applicant's screening and F en evaluations and where average and maximum temperatures were used in the evaluations. The staff is unable to determine if the average transient temperatures were calculated appropriately considering the threshold temperature. In addition, the staff is unable to determine if use of the average temperatures were limited to simple transients.

Discussion

During a conference call held on December 15, 2015, the applicant and the staff discussed three methods to determine the average temperature values used to calculate the F en factors. One method was based on minimum transient temperatures above the temperature threshold.

A second method was based on minimum transient temperatures below the temperature threshold. The applicant stated that a third method used the minimum transient temperature instead of the threshold temperature to calculate the average temperature and, if the resulting temperature was less than the threshold temperature, then the threshold temperature was used to calculate the F en factor.

The staff stated that the first two methods for calculating average temperature are consistent with NUREG/CR-6909, however the third approach is not consistent with NUREG/CR-6909. The staff stated that the use of a method consistent with NUREG/CR-6909 for the determination of average temperature may have an impact in the applicant's screening and F en evaluations. The staff also stated that for the applicant to address the staff's concerns the following additional information is needed:

a) Identification of all locations that used an average temperature to calculate the F en factor, including locations which are not identified as sentinel locations.

b) Description regarding whether the revised average temperature calculations impacts the selection of sentinel locations.

c) Confirmation that any revised F en factors and CUF en values are determined in a manner consistent with the guidance of NUREG/CR-6909, as stated in LRA Section 4.3.3, A2.2, and response to RAI 4.3.3-3.

The applicant stated that it understood the staff need for additional information and that it may provide the information through a supplement to the LRA. The staff stated that a supplement to the LRA may be adequate; however, the staff may request the information through a follow-up RAI.

SUBJECT:

SUMMARY OF TELEPHONE CONFERENCE CALLS HELD ON DECEMBER 15, 2015, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND DTE ELECTRIC COMPANY CONCERNING THE RESPONSE TO REQUEST FOR ADDITIONAL INFORMATON 4.3.3-3 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

E. Keegan

J. Danna C. Kanatas, OGC B. Dickson, RIII B. Kemker, RIII

P. Smagacz, RIII V. Mitlyng, RIII P. Chandrathil, RIII

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