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| number = ML081260712
| number = ML081260712
| issue date = 06/05/2008
| issue date = 06/05/2008
| title = 03/20/08 - Summary of Meeting with TVA Steam Dryer Portion of the Extended Power Uprate Review (TAC Nos. MD5262, MD5263 and MD5264)
| title = Summary of Meeting with TVA Steam Dryer Portion of the Extended Power Uprate Review
| author name = Brown E
| author name = Brown E
| author affiliation = NRC/NRR/ADRO/DORL/LPLII-2
| author affiliation = NRC/NRR/ADRO/DORL/LPLII-2
Line 18: Line 18:


=Text=
=Text=
{{#Wiki_filter:June 5, 2008  
{{#Wiki_filter:June 5, 2008 LICENSEE:       Tennessee Valley Authority FACILITIES: Browns Ferry Units 1, 2, and 3
 
LICENSEE: Tennessee Valley Authority  
 
FACILITIES: Browns Ferry Units 1, 2, and 3


==SUBJECT:==
==SUBJECT:==


==SUMMARY==
==SUMMARY==
OF MARCH 20, 2008, MEETING WITH TENNESSEE VALLEY AUTHORITY REGARDING STEAM DRYER PORTION OF THE EXTENDED POWER UPRATE REVIEW (TAC NOS. MD5262, MD5263, AND MD5264)  
OF MARCH 20, 2008, MEETING WITH TENNESSEE VALLEY AUTHORITY REGARDING STEAM DRYER PORTION OF THE EXTENDED POWER UPRATE REVIEW (TAC NOS. MD5262, MD5263, AND MD5264)
 
On March 20, 2008, the U.S. Nuclear Regulatory Commission (NRC) staff conducted a Category 1 public meeting with Tennessee Valley Authority (TVA, the licensee) at NRC Headquarters, One White Flint North, 11555 Rockville Pike, Rockville, Maryland. The purpose of the meeting was to discuss the NRC staffs concerns with the steam dryer analyses provided in support of the extended power uprate (EPU) amendment request for Browns Ferry Nuclear Plant. Due to the proprietary nature of the information being discussed, only portions of the meeting were open to the public. The enclosure contains a list of attendees. The licensee presented slides regarding the steam dryer portion of the EPU review (see the Agencywide Documents Access and Management System Accession No. ML081120510).
On March 20, 2008, the U.S. Nuclear Regulatory Commission (NRC) staff conducted a Category 1 public meeting with Tennessee Valley Authority (TVA, the licensee) at NRC Headquarters, One White Flint North, 11555 Rockville Pike, Rockville, Maryland. The purpose of the meeting was to discuss the NRC staff's concerns with the steam dryer analyses provided in support of the extended power uprate (EPU) amendment request for Browns Ferry Nuclear Plant. Due to the proprietary nature of the information being discussed, only portions of the meeting were open to the public. The enclosure contains a list of attendees. The licensee presented slides regarding the steam dryer portion of the EPU review (see the Agencywide Documents Access and Management System Accession No. ML081120510).  
DISCUSSION In letters dated January 31 and March 6, 2008, TVA provided the Group 1 and 2 responses to the NRC staffs Round 15 request for additional information. Based on the stress analysis provided in the March 6, 2008, response, the meeting focused on the results which indicated that the minimum alternating stress ratio for the Unit 1 dryer is 1.56. The NRC staff stated that the stress margin needed for reasonable assurance should be around 2.0. This value is in line with the margins obtained by previous boiling-water reactor licensees requesting similar power uprates. The NRC staff indicated concerns that the stress ratio would be further reduced to
 
~1.18 EPU conditions provided no acoustic resonance appears during power ascension; otherwise it could possibly be reduced further. TVA discussed the locations on the Unit 1 dryer that fell below expectations.
DISCUSSION
The discussion continued regarding crediting of additional damping. The NRC staff indicated continuing skepticism regarding the amount of dampening attributed by the analyses to other phenomenon. The licensee was requested to provide additional information to refine the steam dryer model and analysis.
 
No members of the public were in attendance; however one feedback form was received. No commitments or regulatory decisions were made by the NRC staff during the meeting.
In letters dated January 31 and March 6, 2008, TVA provided the Group 1 and 2 responses to the NRC staff's Round 15 request for additional information. Based on the stress analysis provided in the March 6, 2008, response, the meeting focused on the results which indicated that the minimum alternating stress ratio for the Unit 1 dryer is 1.56.
                                              /RA/
The NRC staff stated that the stress margin needed for reasonable assurance should be around 2.0. This value is in line with the margins obtained by previous boiling-water reactor licensees requesting similar power uprates. The NRC staff indicated concerns that the stress ratio would be further reduced to  
Eva A. Brown, Senior Project Manager Plant Licensing Branch II-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-259, 50-260, and 50-296
~1.18 EPU conditions provided no acoustic resonance appears during power ascension; otherwise it could possibly be reduced further. TVA discussed the locations on the Unit 1 dryer that fell below expectations.  
 
The discussion continued regarding crediting of additional damping. The NRC staff indicated continuing skepticism regarding the amount of dampening attributed by the analyses to other phenomenon. The licensee was requested to provide additional information to refine the steam dryer model and analysis.  
 
No members of the public were in attendance; however one feedback form was received. No commitments or regulatory decisions were made by the NRC staff during the meeting.  
 
      /RA/
Eva A. Brown, Senior Project Manager Plant Licensing Branch II-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation  
 
Docket Nos. 50-259, 50-260, and 50-296  


==Enclosure:==
==Enclosure:==
List of Attendees  
List of Attendees cc w/encl: See next page
 
cc w/encl: See next page  


ML081260712 Pkg: ML081140324 TVA Slides: ML081120510       NRC-001 OFFICE LPLII-2/PM LPLII-2/LA LPLII-2 NAME EBrown:sp BClayton TBoyce DATE 06/02/08 06/02/08 06/05/08
ML081260712 Pkg: ML081140324 TVA Slides: ML081120510                                                 NRC-001 OFFICE                 LPLII-2/PM             LPLII-2/LA             LPLII-2 NAME                   EBrown:sp               BClayton               TBoyce DATE                   06/02/08               06/02/08               06/05/08


==SUBJECT:==
==SUBJECT:==


==SUMMARY==
==SUMMARY==
OF MARCH 20, 2008 MEETING REGARDING STEAM DRYER PORTION OF THE EXTENDED POWER UPRATE REVIEW (TAC NOS. MD5262, MD5263, AND MD5264)  
OF MARCH 20, 2008 MEETING REGARDING STEAM DRYER PORTION OF THE EXTENDED POWER UPRATE REVIEW (TAC NOS. MD5262, MD5263, AND MD5264)
 
DISTRIBUTION:
DISTRIBUTION
PUBLIC Lpl2-2 R/F RidsNrrDorl RidsNrrDorlLpl2-2 RidsNrrPMEBrown RidsNrrLABClayton RidsAcrsAcnw&mMailCenter MCox, EDO RidsNrrEmcb RidsOgcRp RidsNrrDe RidsRgn2MailCenter TScarbrough CBasavaraju MHartzman CTucci, NRR EXTERNAL DISTRIBUTION JWilcox(jdwolcott@tva.gov)
PUBLIC Lpl2-2 R/F RidsNrrDorl RidsNrrDorlLpl2-2 RidsNrrPMEBrown RidsNrrLABClayton RidsAcrsAcnw&mMailCenter MCox, EDO RidsNrrEmcb RidsOgcRp RidsNrrDe RidsRgn2MailCenter TScarbrough CBasavaraju MHartzman CTucci, NRR  
SZiada(ziadas@mcmaster.ca)
 
VShah(vnshah@anl.gov)
EXTERNAL DISTRIBUTION JWilcox(jdwolcott@tva.gov) SZiada(ziadas@mcmaster.ca) VShah(vnshah@anl.gov) SHambric(sah19@psu.edu)
SHambric(sah19@psu.edu)
List of Attendees U. S. Nuclear Regulatory Commission Public Meeting with Tennessee Valley Authority Regarding Browns Ferry Power Uprate March 20, 2008
 
U. S. NUCLEAR REGULATORY COMMISSION  ARGONNE NATIONAL LABORATORY Thomas Boyce      Vik Shah Kamal Manoly      Samir Ziada Chakrapani Basavaraju Mark Hartzman      PENN STATE UNIVERSITY Eva Brown      Steve Hambric
 
TENNESSEE VALLEY AUTHORITY Kenneth Spates
 
James Emens J.D. Wolcott Denzel Housley
 
CONTINUUM DYNAMICS INCORPORATED Alan Bilanin
 
Enclosure
 
Page 1 of 2 Tennessee Valley Authority    BROWNS FERRY NUCLEAR PLANT
 
cc:
Mr. Ashok S. Bhatnagar Senior Vice President Nuclear Generation Development and Construction Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, TN  37402-2801   
 
Vice President Nuclear Support Tennessee Valley Authority 3R Lookout Place 1101 Market Street Chattanooga, TN  37402-2801   
 
Mr. H. Rick Rogers Vice President Nuclear Engineering & Technical Services Tennessee Valley Authority 3R Lookout Place 1101 Market Street Chattanooga, TN  37402-2801
 
Mr. D. Tony Langley, Manager Licensing and Industry Affairs Browns Ferry Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Decatur, AL  35609
 
General Counsel Tennessee Valley Authority 6A West Tower 400 West Summit Hill Drive Knoxville, TN  37902
 
Mr. John C. Fornicola, General Manager Nuclear Assurance Tennessee Valley Authority 3R Lookout Place 1101 Market Street Chattanooga, TN  37402-2801
 
Mr. R. G. (Rusty) West Site Vice President Browns Ferry Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Decatur, AL  35609
 
Ms. Beth A. Wetzel, Manager Corporate Nuclear Licensing and Industry Affairs Tennessee Valley Authority 4X Blue Ridge 1101 Market Street Chattanooga, TN  37402-2801
 
Mr. James E. Emens, Jr.
Supervisor, Nuclear Site Licensing Browns Ferry Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Decatur, AL 35609
 
James B. Baptist Browns Ferry Senior Project Engineer Division of Reactor Projects, Branch 6 U.S. Nuclear Regulatory Commission 61 Forsyth Street, SW.
Suite 24T85 Atlanta, GA  30303-8931 
 
Tomy A. Nazario Browns Ferry Project Engineer Division of Reactor Projects, Branch 6 U.S. Nuclear Regulatory Commission 61 Forsyth Street, SW.
Suite 24T85 Atlanta, GA  30303-8931 
 
Senior Resident Inspector U.S. Nuclear Regulatory Commission Browns Ferry Nuclear Plant 10833 Shaw Road Athens, AL 35611-6970
 
Page 2 of 2 State Health Officer Alabama Dept. of Public Health RSA Tower - Administration Suite 1552 P.O. Box 303017 Montgomery, AL 36130-3017
 
Chairman Limestone County Commission 310 West Washington Street Athens, AL  35611


Mr. Larry E. Nicholson, General Manager Performance Improvement Tennessee Valley Authority 3R Lookout Place 1101 Market Street Chattanooga, TN  37402-2801
List of Attendees U. S. Nuclear Regulatory Commission Public Meeting with Tennessee Valley Authority Regarding Browns Ferry Power Uprate March 20, 2008 U. S. NUCLEAR REGULATORY COMMISSION                  ARGONNE NATIONAL LABORATORY Thomas Boyce                                        Vik Shah Kamal Manoly                                        Samir Ziada Chakrapani Basavaraju Mark Hartzman                                        PENN STATE UNIVERSITY Eva Brown                                            Steve Hambric TENNESSEE VALLEY AUTHORITY Kenneth Spates James Emens J.D. Wolcott Denzel Housley CONTINUUM DYNAMICS INCORPORATED Alan Bilanin Enclosure


Mr. Michael A. Purcell Senior Licensing Manager Nuclear Power Group Tennessee Valley Authority 4X Blue Ridge 1101 Market Street Chattanooga, TN 37402-2801  
Page 1 of 2 Tennessee Valley Authority              BROWNS FERRY NUCLEAR PLANT cc:
Mr. Ashok S. Bhatnagar                  Mr. R. G. (Rusty) West Senior Vice President                    Site Vice President Nuclear Generation Development          Browns Ferry Nuclear Plant and Construction                      Tennessee Valley Authority Tennessee Valley Authority              P.O. Box 2000 6A Lookout Place                        Decatur, AL 35609 1101 Market Street Chattanooga, TN 37402-2801              Ms. Beth A. Wetzel, Manager Corporate Nuclear Licensing Vice President                              and Industry Affairs Nuclear Support                          Tennessee Valley Authority Tennessee Valley Authority               4X Blue Ridge 3R Lookout Place                        1101 Market Street 1101 Market Street                      Chattanooga, TN 37402-2801 Chattanooga, TN 37402-2801 Mr. James E. Emens, Jr.
Mr. H. Rick Rogers                      Supervisor, Nuclear Site Licensing Vice President                          Browns Ferry Nuclear Plant Nuclear Engineering & Technical Services Tennessee Valley Authority Tennessee Valley Authority              P.O. Box 2000 3R Lookout Place                        Decatur, AL 35609 1101 Market Street Chattanooga, TN 37402-2801              James B. Baptist Browns Ferry Senior Project Engineer Mr. D. Tony Langley, Manager            Division of Reactor Projects, Branch 6 Licensing and Industry Affairs          U.S. Nuclear Regulatory Commission Browns Ferry Nuclear Plant              61 Forsyth Street, SW.
Tennessee Valley Authority              Suite 24T85 P.O. Box 2000                            Atlanta, GA 30303-8931 Decatur, AL 35609 Tomy A. Nazario General Counsel                          Browns Ferry Project Engineer Tennessee Valley Authority              Division of Reactor Projects, Branch 6 6A West Tower                            U.S. Nuclear Regulatory Commission 400 West Summit Hill Drive              61 Forsyth Street, SW.
Knoxville, TN 37902                      Suite 24T85 Atlanta, GA 30303-8931 Mr. John C. Fornicola, General Manager Nuclear Assurance                        Senior Resident Inspector Tennessee Valley Authority              U.S. Nuclear Regulatory Commission 3R Lookout Place                        Browns Ferry Nuclear Plant 1101 Market Street                      10833 Shaw Road Chattanooga, TN 37402-2801              Athens, AL 35611-6970


Mr. William R. Campbell, Jr.
Page 2 of 2 State Health Officer Alabama Dept. of Public Health RSA Tower - Administration Suite 1552 P.O. Box 303017 Montgomery, AL 36130-3017 Chairman Limestone County Commission 310 West Washington Street Athens, AL 35611 Mr. Larry E. Nicholson, General Manager Performance Improvement Tennessee Valley Authority 3R Lookout Place 1101 Market Street Chattanooga, TN 37402-2801 Mr. Michael A. Purcell Senior Licensing Manager Nuclear Power Group Tennessee Valley Authority 4X Blue Ridge 1101 Market Street Chattanooga, TN 37402-2801 Mr. William R. Campbell, Jr.
Chief Nuclear Officer and Executive Vice President 6A Lookout Place 1101 Market Street Chattanooga, TN 37402-2801}}
Chief Nuclear Officer and Executive Vice President 6A Lookout Place 1101 Market Street Chattanooga, TN 37402-2801}}

Latest revision as of 11:56, 22 March 2020

Summary of Meeting with TVA Steam Dryer Portion of the Extended Power Uprate Review
ML081260712
Person / Time
Site: Browns Ferry  Tennessee Valley Authority icon.png
Issue date: 06/05/2008
From: Ellen Brown
NRC/NRR/ADRO/DORL/LPLII-2
To:
Tennessee Valley Authority
Brown Eva, NRR/DORL, 415-2315
References
TAC MD5262, TAC MD5263, TAC MD5264
Download: ML081260712 (6)


Text

June 5, 2008 LICENSEE: Tennessee Valley Authority FACILITIES: Browns Ferry Units 1, 2, and 3

SUBJECT:

SUMMARY

OF MARCH 20, 2008, MEETING WITH TENNESSEE VALLEY AUTHORITY REGARDING STEAM DRYER PORTION OF THE EXTENDED POWER UPRATE REVIEW (TAC NOS. MD5262, MD5263, AND MD5264)

On March 20, 2008, the U.S. Nuclear Regulatory Commission (NRC) staff conducted a Category 1 public meeting with Tennessee Valley Authority (TVA, the licensee) at NRC Headquarters, One White Flint North, 11555 Rockville Pike, Rockville, Maryland. The purpose of the meeting was to discuss the NRC staffs concerns with the steam dryer analyses provided in support of the extended power uprate (EPU) amendment request for Browns Ferry Nuclear Plant. Due to the proprietary nature of the information being discussed, only portions of the meeting were open to the public. The enclosure contains a list of attendees. The licensee presented slides regarding the steam dryer portion of the EPU review (see the Agencywide Documents Access and Management System Accession No. ML081120510).

DISCUSSION In letters dated January 31 and March 6, 2008, TVA provided the Group 1 and 2 responses to the NRC staffs Round 15 request for additional information. Based on the stress analysis provided in the March 6, 2008, response, the meeting focused on the results which indicated that the minimum alternating stress ratio for the Unit 1 dryer is 1.56. The NRC staff stated that the stress margin needed for reasonable assurance should be around 2.0. This value is in line with the margins obtained by previous boiling-water reactor licensees requesting similar power uprates. The NRC staff indicated concerns that the stress ratio would be further reduced to

~1.18 EPU conditions provided no acoustic resonance appears during power ascension; otherwise it could possibly be reduced further. TVA discussed the locations on the Unit 1 dryer that fell below expectations.

The discussion continued regarding crediting of additional damping. The NRC staff indicated continuing skepticism regarding the amount of dampening attributed by the analyses to other phenomenon. The licensee was requested to provide additional information to refine the steam dryer model and analysis.

No members of the public were in attendance; however one feedback form was received. No commitments or regulatory decisions were made by the NRC staff during the meeting.

/RA/

Eva A. Brown, Senior Project Manager Plant Licensing Branch II-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-259, 50-260, and 50-296

Enclosure:

List of Attendees cc w/encl: See next page

ML081260712 Pkg: ML081140324 TVA Slides: ML081120510 NRC-001 OFFICE LPLII-2/PM LPLII-2/LA LPLII-2 NAME EBrown:sp BClayton TBoyce DATE 06/02/08 06/02/08 06/05/08

SUBJECT:

SUMMARY

OF MARCH 20, 2008 MEETING REGARDING STEAM DRYER PORTION OF THE EXTENDED POWER UPRATE REVIEW (TAC NOS. MD5262, MD5263, AND MD5264)

DISTRIBUTION:

PUBLIC Lpl2-2 R/F RidsNrrDorl RidsNrrDorlLpl2-2 RidsNrrPMEBrown RidsNrrLABClayton RidsAcrsAcnw&mMailCenter MCox, EDO RidsNrrEmcb RidsOgcRp RidsNrrDe RidsRgn2MailCenter TScarbrough CBasavaraju MHartzman CTucci, NRR EXTERNAL DISTRIBUTION JWilcox(jdwolcott@tva.gov)

SZiada(ziadas@mcmaster.ca)

VShah(vnshah@anl.gov)

SHambric(sah19@psu.edu)

List of Attendees U. S. Nuclear Regulatory Commission Public Meeting with Tennessee Valley Authority Regarding Browns Ferry Power Uprate March 20, 2008 U. S. NUCLEAR REGULATORY COMMISSION ARGONNE NATIONAL LABORATORY Thomas Boyce Vik Shah Kamal Manoly Samir Ziada Chakrapani Basavaraju Mark Hartzman PENN STATE UNIVERSITY Eva Brown Steve Hambric TENNESSEE VALLEY AUTHORITY Kenneth Spates James Emens J.D. Wolcott Denzel Housley CONTINUUM DYNAMICS INCORPORATED Alan Bilanin Enclosure

Page 1 of 2 Tennessee Valley Authority BROWNS FERRY NUCLEAR PLANT cc:

Mr. Ashok S. Bhatnagar Mr. R. G. (Rusty) West Senior Vice President Site Vice President Nuclear Generation Development Browns Ferry Nuclear Plant and Construction Tennessee Valley Authority Tennessee Valley Authority P.O. Box 2000 6A Lookout Place Decatur, AL 35609 1101 Market Street Chattanooga, TN 37402-2801 Ms. Beth A. Wetzel, Manager Corporate Nuclear Licensing Vice President and Industry Affairs Nuclear Support Tennessee Valley Authority Tennessee Valley Authority 4X Blue Ridge 3R Lookout Place 1101 Market Street 1101 Market Street Chattanooga, TN 37402-2801 Chattanooga, TN 37402-2801 Mr. James E. Emens, Jr.

Mr. H. Rick Rogers Supervisor, Nuclear Site Licensing Vice President Browns Ferry Nuclear Plant Nuclear Engineering & Technical Services Tennessee Valley Authority Tennessee Valley Authority P.O. Box 2000 3R Lookout Place Decatur, AL 35609 1101 Market Street Chattanooga, TN 37402-2801 James B. Baptist Browns Ferry Senior Project Engineer Mr. D. Tony Langley, Manager Division of Reactor Projects, Branch 6 Licensing and Industry Affairs U.S. Nuclear Regulatory Commission Browns Ferry Nuclear Plant 61 Forsyth Street, SW.

Tennessee Valley Authority Suite 24T85 P.O. Box 2000 Atlanta, GA 30303-8931 Decatur, AL 35609 Tomy A. Nazario General Counsel Browns Ferry Project Engineer Tennessee Valley Authority Division of Reactor Projects, Branch 6 6A West Tower U.S. Nuclear Regulatory Commission 400 West Summit Hill Drive 61 Forsyth Street, SW.

Knoxville, TN 37902 Suite 24T85 Atlanta, GA 30303-8931 Mr. John C. Fornicola, General Manager Nuclear Assurance Senior Resident Inspector Tennessee Valley Authority U.S. Nuclear Regulatory Commission 3R Lookout Place Browns Ferry Nuclear Plant 1101 Market Street 10833 Shaw Road Chattanooga, TN 37402-2801 Athens, AL 35611-6970

Page 2 of 2 State Health Officer Alabama Dept. of Public Health RSA Tower - Administration Suite 1552 P.O. Box 303017 Montgomery, AL 36130-3017 Chairman Limestone County Commission 310 West Washington Street Athens, AL 35611 Mr. Larry E. Nicholson, General Manager Performance Improvement Tennessee Valley Authority 3R Lookout Place 1101 Market Street Chattanooga, TN 37402-2801 Mr. Michael A. Purcell Senior Licensing Manager Nuclear Power Group Tennessee Valley Authority 4X Blue Ridge 1101 Market Street Chattanooga, TN 37402-2801 Mr. William R. Campbell, Jr.

Chief Nuclear Officer and Executive Vice President 6A Lookout Place 1101 Market Street Chattanooga, TN 37402-2801