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| =Text= | | =Text= |
| {{#Wiki_filter:lim TENNESSEE VALLEY AUTHORITY BROWNS FERRY NUCLEAR PLANT UNIT 1 Steam Dryer Analysis August 7,2009 | | {{#Wiki_filter:lim TENNESSEE VALLEY AUTHORITY BROWNS FERRY NUCLEAR PLANT UNIT 1 Steam Dryer Analysis August 7,2009 |
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| Steam Dryer Stress Analysis [II] | | [II] |
| | Steam Dryer Stress Analysis |
| * Low Flow Noise Included | | * Low Flow Noise Included |
| * Re-analyzing Steam Dryer Stress to Show SR > 2.0 | | * Re-analyzing Steam Dryer Stress to Show SR > 2.0 |
| - As built steam dryer at 110 % OLTP
| | - As built steam dryer at 110% OLTP |
| - Modified steam dryer at 1200/0 OLTP 2
| | - Modified steam dryer at 1200/0 OLTP 2 |
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| Steam Dryer Stress Analysis [II] | | [II] |
| * 1100/0 OLTP Based on CDI 08-15P (March 2009) with: | | Steam Dryer Stress Analysis |
| - Low flow noise included
| | * 1100/0 OLTP Based on CDI 08-15P (March 2009) with: |
| - Adjusted bump-up for 1100/0 v 2 & 110 % resonance
| | - Low flow noise included |
| - Same steam dryer configuration
| | - Adjusted bump-up for 1100/0 v2 & 110% resonance |
| - Utilization of ASME Table NG 3352-1
| | - Same steam dryer configuration |
| - SR > 2.0 3
| | - Utilization of ASME Table NG 3352-1 |
| | - SR > 2.0 3 |
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| Steam Dryer Stress Analysis iii] | | iii] |
| * 120% OLTP Based on COl 08-15P (March 2009) with: | | Steam Dryer Stress Analysis |
| - Low flow noise included
| | * 120% OLTP Based on COl 08-15P (March 2009) with: |
| - Additional steam dryer modifications
| | - Low flow noise included |
| - Revision of two submodels o 1 SIA - 1 COl
| | - Additional steam dryer modifications |
| - Utilization of ASME Table NG 3352-1
| | - Revision of two submodels o 1 SIA - 1 COl |
| - SR > 2.0 4
| | - Utilization of ASME Table NG 3352-1 |
| | - SR > 2.0 4 |
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| Steam Dryer Stress Analysis [II] | | [II] |
| z x~ y Outer Hood - Old Bar
| | Steam Dryer Stress Analysis z |
| & Lock Gussets Group I Drain Channels Group III index I Inner Hood Stiffeners Group II 5
| | x~ |
| | y index I Outer Hood - Old Bar |
| | & Lock Gussets Group I Drain Channels Group III Inner Hood Stiffeners Group II 5 |
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| Steam Dryer Stress Analysis mil Middle Hood/F&T Tie Bar Group IV Outer Hood Side Panel I Vane Bank End Wall Group V Outer Bank Discharge End panel I Middle Hood I Top Cover Group VI 6 | | Steam Dryer Stress Analysis mil Middle Hood/F&T Tie Bar Group IV Outer Hood Side Panel I Vane Bank End Wall Group V Outer Bank Discharge End panel I Middle Hood I Top Cover Group VI 6 |
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| Steam Dryer Stress Analysis III] | | III] |
| Noise Retained Modifications Reinforcing Bar ole Old Tie Bar/Lock Gusset Replace with TVA Gusset Group I lli; i | | Steam Dryer Stress Analysis Noise Retained Modifications Old Tie Bar/Lock Gusset Reinforcing Bar ole Replace with TVA Gusset Group I lli; i |
| 't:! * ; ll~
| | 't:! |
| -.L 3tL Drill Yo" DIA Re' ThtuP lie
| | ; ll~ |
| ~ Two (2) lJUssets are "'ll\lired per C-vssel Pad s:eam dam. four (-4) iotal per unit.
| | -.L 3tL Drill Yo" DIA Re' ThtuP lie |
| n
| | ~ Two (2) lJUssets are "'ll\\lired per C-vssel Pad s:eam dam. four (-4) iotal per unit. |
| ~Oam(1
| | ~Oam(1 n |
| ~ ~
| | ~ |
| | ~ |
| | Existing Configuration at 4 Locations, Where Old TB Remnant and Lock Gusset Were Retained. |
| L/ | | L/ |
| Existing Configuration at 4 Locations, Where Old TB Remnant and Lock Gusset Were Retained.
| | Stress Intensities Seen in Base Plate, TB 1 |
| Stress Intensities Seen in Base Plate, TB Connection & Lock Gusset Connections. 1 Mod Removes this Configuration and Replaces with Revised Gusset as Found in all other Locations, Stiffens the top of Steam Dam with a ~ | | Connection & Lock Gusset Connections. |
| Pipe Section, & Reinforces the %" Thick Outer STEAM DAM GUSSET ASSEMBLY Hood Cover. PATCH PLATE LOCATIONS DETAILS - BFN U1 7 | | Mod Removes this Configuration and Replaces with Revised Gusset as Found in all other Locations, Stiffens the top of Steam Dam with a ~ |
| | Pipe Section, & Reinforces the %" Thick Outer STEAM DAM GUSSET ASSEMBLY Hood Cover. |
| | PATCH PLATE LOCATIONS DETAILS - BFN U1 7 |
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| Steam Dryer Stress Analysis 1m Noise Retained Modifications Inner Hood Stiffeners - Group II 3.f1E Limiting stress location is at bottom corner of 3,1 Hood Stiffener 2 sided fillet weld. Addition of stress relief semi-circular hole reduces stress acting on weld and adds flexibility to corner. HOOD SlIPPORT Modifications provide a resultant SRF = .53 | | Steam Dryer Stress Analysis 1m Noise Retained Modifications Inner Hood Stiffeners - Group II Limiting stress location is at bottom corner of Hood Stiffener 2 sided fillet weld. Addition of stress relief semi-circular hole reduces stress acting on weld and adds flexibility to corner. |
| .2:5
| | Modifications provide a resultant SRF =.53 Previous Solid Sub Model Revised to Evaluate Stress Relief and Resultant SRF HOOD SlIPPORT |
| -----~1.75 I
| | .2:5 |
| ~. !
| | -----~1.75 |
| Previous Solid Sub Model Revised to Evaluate Stress Relief 000-TO-HOOD SUPPORT RELIEF HO ASEUNE DIMENSIONS and Resultant SRF 8
| | ~. |
| | I 3.f1E 3,1 000-TO-HOOD SUPPORT RELIEF HO ASEUNE DIMENSIONS 8 |
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| Steam Dryer Stress Analysis [iI] | | [iI] |
| Noise Retained Modifications 1Ia" Drain el(ref}j J'ttt Drain Channels - Group III R 3.50 (lefl - \ | | Steam Dryer Stress Analysis Noise Retained Modifications Drain Channels - Group III DC Follow the Dryer Skirt Modal Response. Limiting Stress Location is at Bottom of Drain Channel Weld, that has been Already Reinforced and Wrapped Underneath the DC. Addition of Stress Relief Semi-circular Hole Reduces Stress Acting on Weld and Adds Flexibility to Corner. |
| DC Follow the Dryer Skirt Modal Response. Limiting Stress Location is at ~A Bottom of Drain Channel Weld, that has been Already Reinforced and Wrapped Underneath the DC. Addition of Stress Relief Semi-circular Hole Reduces Stress Acting on Weld and Adds Flexibility to ----114" Dryer Skirt (reI) _ _ | | Modifications Provide SRF =.43 Previous Solid Sub Model Revised to Evaluate Stress Relief and Resultant SRF 1Ia" Drain el(ref}j J'ttt R 3.50 (lefl-\\ |
| Corner.
| | ~ |
| Modifications Provide SRF = .43 18" [)fain Ch01f1nel (reI) -_~/ _
| | A |
| Previous Solid Sub Semi-circu Re~H Model Revised to 'Nolie: These dimensi:>ns are g;ven as arc I~
| | ----114" Dryer Skirt (reI)__ |
| Evaluate Stress Relief along .!he O'..I"V3".ure of drain Ch01f1 Section A-A and Resultant SRF DRAIN CHANNEL END RELIEF HOLE CONCEPT 9
| | 18" [)fain Ch01f1nel (reI) -_~/ |
| | Semi-circu Re~H |
| | 'Nolie: These dimensi:>ns are g;ven as arc I~ |
| | along.!he O'..I"V3".ure of Section A-A drain Ch01f1 DRAIN CHANNEL END RELIEF HOLE CONCEPT 9 |
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| Steam Dryer Stress Analysis [iJJ Noise Retained Modifications 6 This n:et::h is appbcable only co lie bars spanning the ou~r ci;scharge duc.-:s. 4 reauired. | | [iJJ Steam Dryer Stress Analysis Noise Retained Modifications 6 This n:et::h is appbcable only co lie bars spanning the ou~r ci;scharge duc.-:s. 4 reauired. |
| .... - -- - See FW'e Middle Hood/F&T Tie Bar - Group IV One location, between outer and middle banks, has a high stress located under the tie See OU.:er Tie Bar-to-Hood bar in the weld to the hood section. Additional "
| | Middle Hood/F&T Tie Bar - Group IV One location, between outer and middle banks, has a high stress located under the tie bar in the weld to the hood section. Additional reinforcement using a reinforcing plate and additional welds is to be added. |
| Reinroreement DetI:iI Shee, reinforcement using a reinforcing plate and additional welds is to be added.
| | Vane Rank A total of four (4) symmetrical locations will be Cover (rei) modified. |
| Vane Rank A total of four (4) symmetrical locations will be Cover (rei) 8,80t:om comers ma~ be rounded to 0.25" maximum rallYs | | l~ |
| 'thin % 1 inc:ll 01 flare break line to {aciSta:e welding.
| | ~, [7/0-Max |
| modified.
| | ,__.. __.--.-~ |
| l~ ~ 1**1 l'
| | See FW'e |
| 'j ,I. 6" *1
| | 'j,I. |
| ~, [7/0-Max (ref) C ,__ .. __.-- .-~
| | 6" |
| Surfac.e may be m.a.chined a requ'red ior lihlp if vane bank FLARED & TAPERED TIE BAR to hood offsl!l is Iessthill 114'_ | | *1 (ref) |
| OUTER VANE BANK DISCHARGES 10
| | C FLARED &TAPERED TIE BAR OUTER VANE BANK DISCHARGES See OU.:er Tie Bar-to-Hood Reinroreement DetI:iI Shee, 8,80t:om comers ma~ be rounded to 0.25" maximum rallYs |
| | 'thin % 1 inc:ll 01 flare break line to {aciSta:e welding. |
| | ~ |
| | 1**1 l' |
| | Surfac.e may be m.a.chined a requ'red ior lihlp if vane bank to hood offsl!l is Iessthill 114'_ |
| | 10 |
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| Steam Dryer Stress Analysis mil 318" x 2" Reinfordng Bar Noise Retained Modifications "7 3/8" Vane Bank 3/8" Outer Hood ~. L-- End Plate (ref) | | Steam Dryer Stress Analysis mil Noise Retained Modifications Outer Hood Side Panel |
| | / Vane Bank End Wall Group V Limiting Component is the 3/8" thick Vane Bank End Closure Plate. |
| | Structural Thickness Changes Of Drain Trough, behind Plate, Contribute to Stress Intensity. Mod Provides Reinforcement to Distribute Stress 318" x 2" Reinfordng Bar "7 |
| | 3/8" Vane Bank 3/8" Outer Hood ~. |
| | L-- End Plate (ref) |
| Closure Plate (ref) | | Closure Plate (ref) |
| Outer Hood Side Panel Bf
| | Bf 1/4" Vane Bank Outlet Skle Trough Plate (ref) 1/2" x 6-1/2' Trough Upper Ring (ref) C ReinforCing Plate, Both SiOes (re.f) 1/2" Vane Bank Bottom Plate (ref) |
| / Vane Bank End Wall 1/4" Vane Bank Outlet Group V Upper Ring (ref) C Skle Trough Plate (ref) 1/2" x 6-1/2' Trough ReinforCing Plate, Both SiOes (re.f) 1/2" Vane Bank Bottom Plate (ref)
| | End View - Outer Hood Closure-to-Vane 1/2" x6-1/2' Trough Reinforcing Plate (ref) |
| Limiting Component is the 3/8" thick End View - Outer Hood Closure-to-Vane Vane Bank End Closure Plate.
| | ~ 318" Vane Bank End Plate (ref) - |
| 1/2" x 6-1/2' Structural Thickness Changes Of Trough Reinforcing Plate (ref) ~ 318" Vane Bank End Plate (ref) - | | 316 |
| Drain Trough, behind Plate, Contribute to Stress Intensity. Mod Provides 316 Reinforcement to Distribute Stress
| | ~~.., |
| ~~ ,
| | 2' x 318" thk x 24" Ig Reinfordng Bar 318" Hood Closure Plate (ref) --'..., I lY Section A-A (Cut Thru Trough) |
| 2' x 318" thk x 24" Ig Reinfordng Bar 318" Hood Closure Plate (ref) - - ' ..., I lY Section A-A (Cut Thru Trough) Section B-B (Cut Thru Perforated Plate) 11 | | Section B-B (Cut Thru Perforated Plate) 11 |
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| Steam Dryer Stress Analysis [II] | | [II] |
| 'A~
| | Steam Dryer Stress Analysis R 0.25 (TVP) |
| R 0.25 (TVP) | | Noise Retained Modifications |
| Noise Retained Modifications + | | + |
| Outer Bank Discharge End panel | | 'A~ |
| /Middle Hood/ Top Cover 114 Group VI Limiting stress is in the 1f4" thick hood cover plate and 1f4" attachment fillet weld. Mod provides additional reinforcement, additional 3.00 weldment, and stiffening.
| | Outer Bank Discharge End panel |
| oJ! | | /Middle Hood/ Top Cover Group VI 114 Limiting stress is in the 1f4" thick hood cover plate and 1f4" attachment fillet weld. Mod provides additional reinforcement, additional 3.00 weldment, and stiffening. |
| -L- ~ ,_,~-
| | B oJ! ~ |
| "_ ..LJ B
| | ..LJ |
| ~
| | -L- |
| MIDDLE HOOD/COVER PLATE/END CLOSURE REINFORCING GUSSET 0.25 0.75 SECTION B-B 12 | | ~- |
| | ~ |
| | MIDDLE HOOD/COVER PLATE/END CLOSURE REINFORCING GUSSET 0.25 0.75 SECTION B-B 12 |
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| Steam Dryer Stress Analysis [II] | | [II] |
| - Interim Operation at Limited Power o Based on stress analysis at 11 Oo~ OLTP with currently modified steam dryer o Low flow noise included o SR > 2.0 o Implement mid-cycle | | Steam Dryer Stress Analysis |
| - Operation at 120% OLTP after Additional Steam Dryer Modifications o Based on stress analysis at 1200~ OLTP with additional modifications to steam dryer o Low flow noise included o SR > 2.0 o Implement modifications Fall 2010 13 | | - Interim Operation at Limited Power o Based on stress analysis at 11 Oo~ OLTP with currently modified steam dryer o Low flow noise included o SR > 2.0 o Implement mid-cycle |
| | - Operation at 120% OLTP after Additional Steam Dryer Modifications o Based on stress analysis at 1200~ OLTP with additional modifications to steam dryer o Low flow noise included o SR > 2.0 o Implement modifications Fall 2010 13 |
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| Steam Dryer Stress Analysis [II] | | [II] |
| Planned Submittals | | Steam Dryer Stress Analysis Planned Submittals |
| - 110 % OLTP o Load report o Stress report o Limit curves
| | - 110 % OLTP o Load report o Stress report o Limit curves |
| - 120% OLTP o Load report o Stress report o Limit curves o Submodels
| | - 120% OLTP o Load report o Stress report o Limit curves o Submodels |
| - Submittal by August 28 14}}
| | - Submittal by August 28 14}} |
Letter Sequence Other |
|---|
|
Initiation
- Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request
- Acceptance...
- Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement
Administration
- Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance
- Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting
Results
Other: ML070370281, ML073100027, ML073510180, ML080360067, ML080430700, ML080500171, ML080530256, ML081010450, ML081010451, ML081120502, ML081700294, ML081720078, ML081760295, ML082040065, ML082050462, ML082100425, ML082810470, ML083120308, ML083240224, ML083250083, ML090130718, ML090340528, ML090720951, ML090760630, ML091320366, ML092020345, ML092430520, ML092440518, ML092460495, ML092460496, ML092460497, ML092460498, ML092460500, ML092540483, ML092680057, ML12319A076, ML13044A498
|
MONTHYEARML0631104352006-11-0707 November 2006
Report of Emergency Core Cooling System (ECCS) Evaluation Model Changes
Project stage: Request
05000260/LER-2007-001, Re Automatic Turbine Trip and Reactor Scram Due to Equipment Failure During Performance of the Main Generator Rheostat Test2007-03-0202 March 2007
Re Automatic Turbine Trip and Reactor Scram Due to Equipment Failure During Performance of the Main Generator Rheostat Test
Project stage: Request
ML0711300782007-04-18018 April 2007
Units 1, 2, & 3 - Technical Specifications Changes TS-431 and TS-418 - Extended Power Uprate (EPU) - Supplemental Response to Requests for Additional Information (RAI)
Project stage: Supplement
ML0711503662007-04-24024 April 2007
Units 1, 2, & 3 - Fire Protection Program - Post-Fire Operator Manual Actions
Project stage: Request
ML0711503712007-04-24024 April 2007
Technical Specifications (TS) Changes TS-431 and TS-418 - Extended Power Uprate (EPU) - Steam Dryer Evaluations
Project stage: Request
ML0712905652007-05-16016 May 2007
Withholding Information from Public Disclosure, Response to Nuclear Regulatory Commission (NRC) Request for Additional Information - Round 12 for Browns Ferry EPU: Supplemental to SBWB-64
Project stage: RAI
ML0716303492007-06-15015 June 2007
Meeting with the Tennessee Valley Authority Concerning the Status of Browns Ferry Nuclear Plant, Units 1, 2 and 3, Steam Dryer Review
Project stage: Meeting
ML0718700242007-07-0303 July 2007
Technical Specifications (TS) Change TS-461 - Modification of Restart Large Transient Testing License Condition 2. (G) 2 - Supplement 1
Project stage: Request
ML0717801902007-07-0505 July 2007
Request for Additional Information for Extended Power Uprate - Round 13 (TS-431 and TS-418
Project stage: RAI
ML0719004762007-07-10010 July 2007
Meeting with the Tennessee Valley Authority (TVA) Concerning the Pending ACRS Meeting on the Browns Ferry Extended Power Uprate
Project stage: Meeting
ML0721501562007-07-18018 July 2007
Slides from Meeting with Tennessee Valley Authority on the Browns Ferry Power Uprate ACRS Presentation
Project stage: Meeting
ML0721303712007-07-27027 July 2007
Technical Specifications Changes TS-431 and TS-418, Extended Power Uprate - Steam Dryer Evaluations
Project stage: Request
ML0721303752007-07-31031 July 2007
CDI Report No. 07-05NP, Revision 0, Finite Element Model for Stress Assessment of Browns Ferry, Unit 1, Steam Dryer to 250 Hz
Project stage: Request
ML0721400442007-08-0808 August 2007
Summary of Meeting with Tennessee Valley Authority on the Browns Ferry Power Uprate ACRS Presentation
Project stage: Meeting
05000259/LER-2007-005, Regarding Automatic Reactor Scram Due to Turbine Trip as a Result of Invalid High Level in Moisture Separator Drain Tank2007-08-0808 August 2007
Regarding Automatic Reactor Scram Due to Turbine Trip as a Result of Invalid High Level in Moisture Separator Drain Tank
Project stage: Request
ML0723602572007-08-21021 August 2007
Technical Specifications (TS) Changes TS-431 and TS-418 - Extended Power Uprate (EPU) - Steam Dryer Limit Curves
Project stage: Request
ML0724805472007-08-31031 August 2007
Technical Specifications (TS) Changes TS-431 and TS-418 - Extended Power Uprate (EPU) - Response to Round 13 Request for Additional Information (RAI) - Containment Overpressure
Project stage: Request
ML0727606602007-10-0909 October 2007
Request for Additional Information for Extended Power Uprate - Round 14 (TS-418)
Project stage: RAI
ML0728902372007-10-18018 October 2007
Request for Withholding Information from Public Disclosure Concerning Round 13 Request for Additional Information for Browns Ferry Nuclear Plant (Tac Nos. MD5262, MD5263 and MD5264)
Project stage: RAI
ML0729603112007-10-22022 October 2007
Technical Specification (TS) Changes TS-431 & TS-418, Extended Power Uprate - EPU Large Transient Testing
Project stage: Request
ML0731000272007-11-0909 November 2007
Request for Schedule Regarding Analysis for Steam Dryers on Extended Power Uprate Amendment Requests (TAC Nos. MD5262, MD5263, and MD5264) (TS-431 and TS-418-S)
Project stage: Other
ML0732303482007-11-15015 November 2007
Units 1, 2, and 3 - Technical Specifications (TS) Changes TS-431 and TS-418 - Extended Power Uprate (EPU) - Response to Round 13 Request for Additional Information (RAI) - Containment Overpressure APLA-35/37
Project stage: Request
ML0733304832007-11-21021 November 2007
Technical Specifications (TS) Changes TS-431 and TS-418 - Extended Power Uprate (EPU) - Response to Preliminary Findings on Steam Dryer Stress Analysis
Project stage: Request
05000296/LER-2007-003, Leak in an ASME Class I Code Reactor Pressure Boundary Pipe2007-11-21021 November 2007
Leak in an ASME Class I Code Reactor Pressure Boundary Pipe
Project stage: Request
ML0735101802007-12-14014 December 2007
Technical Specifications Changes TS-431 and TS-418 - Extended Power Uprate - Schedule Regarding Analysis for Steam Dryers
Project stage: Other
ML0734607572007-12-19019 December 2007
Request for Withholding Information from Public Disclosure for Browns Ferry Nuclear Plant (Tac No. MD5262, MD5263 and MD5264)
Project stage: Withholding Request Acceptance
ML0735400102008-01-25025 January 2008
Summary of Meeting with Tennessee Valley Authority on Steam Dryer Portion of the Extended Power Uprate Review (TAC Nos. MD5262, MD5263, and MD5264), Browns Ferry Units 1, 2, and 3
Project stage: Meeting
ML0801504182008-01-25025 January 2008
(Public Version) - Summary of December 10, 2007 Meeting with TVA on Steam Dryer Portion of the Extended Power Uprate Review
Project stage: Meeting
ML0803205212008-01-25025 January 2008
Technical Specifications (TS) Changes TS-431 and TS-418 - Extended Power Uprate (EPU) Response to Round 15 Request for Additional Information (RAI) - APLA-38/40, SRXB-71, and SRXB-72
Project stage: Request
ML0803600672008-01-25025 January 2008
Steam Dryer RAI 15 Status, Slides
Project stage: Other
ML0802501652008-01-30030 January 2008
Request for Withholding Information from Public Disclosure for Browns Ferry Nuclear Plant (Tac Nos. MD5262, MD5263, and MD5264)
Project stage: Withholding Request Acceptance
ML0803805602008-01-31031 January 2008
Technical Specifications (TS) Change TS-431 and TS-418 - Extended Power Uprate (EPU) - Response to Round 15 Request for Additional Information (RAI) Regarding Steam Dryer Analyses
Project stage: Request
ML0804307002008-02-11011 February 2008
Technical Specifications (TS) Changes TS-431 and TS-418 - Extended Power Uprate (EPU) - Schedule Regarding EPU
Project stage: Other
ML0804304462008-02-11011 February 2008
Notification of Potential Part 21 Report Power Supply Unit Is Limited at Elevated Temperatures
Project stage: Request
ML0803503812008-02-14014 February 2008
Summary of Meeting with Tennessee Valley Authority - on Extended Power Uprate Review
Project stage: Meeting
ML0806501012008-02-21021 February 2008
Response to Round 16 Request for Additional Information SRXB-73
Project stage: Request
ML0805302562008-02-21021 February 2008
Unit 1 - Technical Specifications (TS) Change TS-431 - Extended Power Uprate (EPU) - Fuels Methods Commitments
Project stage: Other
ML0804506472008-02-27027 February 2008
Request for Withholding Information from Public Disclosure
Project stage: Withholding Request Acceptance
ML0803506982008-02-29029 February 2008
Request for Additional Information for Extended Power Uprate - Round 16 (TS-431 and TS-418) (TACs MD5262, MD5263, MD5264)
Project stage: RAI
ML0807104982008-03-0606 March 2008
(BFN) - Units 1, 2, and 3 - Technical Specifications (TS) Change TS-418 and TS-431 - Extended Power Uprate (EPU) - Response to Round 16 Request for Additional Information (RAI) - SRXB-74/86 and SRXB-87 Through SRXB-90
Project stage: Request
ML0811205102008-03-20020 March 2008
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) - Slides
Project stage: Meeting
ML0810104502008-04-0404 April 2008
(BFN) - Units 1, 2, and 3 - Technical Specifications (TS) Changes TS-431 and TS-418 - Extended Power Uprate (EPU) - Response to Round 15 and Round 16 Requests for Additional Information (RAI) Regarding Steam Dryer Analyses
Project stage: Other
ML0810104512008-04-0404 April 2008
Technical Specifications (TS) Changes TS-431 and TS-418 Extended Power Uprate (EPU) BFN Steam Monitoring Plan
Project stage: Other
ML0817602952008-04-0909 April 2008
Units 1, 2, & 3 - Technical Specifications Changes TS-431 and TS-418 - Extended Power Uprate - Confirmation of Commitment Completions
Project stage: Other
ML0811205022008-04-16016 April 2008
CDI Incoming Letter Dated April 16, 2008 Regarding NRC Presentation Entitled, Tennessee Valley Authority Browns Ferry Nuclear Plant - Extended Power Uprate Steam Dryers
Project stage: Other
ML0811302312008-04-17017 April 2008
Public Slides - Summary of April 17, 2008, Meeting Regarding Steam Dryer Portion of the Extended Power Uprate Review,
Project stage: Meeting
ML0811200332008-04-30030 April 2008
Accumulation in Emergency Core Cooling, Decay Heat Removal, and Containment Browns Ferry Nuclear Plant, Units 1, 2, and 3 - Request for Withholding Information from Public Disclosure for Round 15 Fuels Responses
Project stage: Withholding Request Acceptance
ML0812806272008-05-0101 May 2008
Technical Specifications Change TS-418, Extended Power Uprate Supplemental Response to Round 16 Request for Additional Information - SRXB-87 & SRXB-89
Project stage: Supplement
ML0812804712008-05-0202 May 2008
Request for Additional Information for Extended Power Uprate - Round 17
Project stage: RAI
ML0805001712008-05-0202 May 2008
Schedule Regarding Analysis for Steam Dryers on Extended Power Uprate Amendment Requests (TAC Nos. MD5262, MD5263, and MD5264) (TS-431 and TS-418)
Project stage: Other
2007-07-05
[Table View] |
Text
lim TENNESSEE VALLEY AUTHORITY BROWNS FERRY NUCLEAR PLANT UNIT 1 Steam Dryer Analysis August 7,2009
[II]
Steam Dryer Stress Analysis
- Re-analyzing Steam Dryer Stress to Show SR > 2.0
- As built steam dryer at 110% OLTP
- Modified steam dryer at 1200/0 OLTP 2
[II]
Steam Dryer Stress Analysis
- 1100/0 OLTP Based on CDI 08-15P (March 2009) with:
- Low flow noise included
- Adjusted bump-up for 1100/0 v2 & 110% resonance
- Same steam dryer configuration
- Utilization of ASME Table NG 3352-1
- SR > 2.0 3
iii]
Steam Dryer Stress Analysis
- 120% OLTP Based on COl 08-15P (March 2009) with:
- Low flow noise included
- Additional steam dryer modifications
- Revision of two submodels o 1 SIA - 1 COl
- Utilization of ASME Table NG 3352-1
- SR > 2.0 4
[II]
Steam Dryer Stress Analysis z
x~
y index I Outer Hood - Old Bar
& Lock Gussets Group I Drain Channels Group III Inner Hood Stiffeners Group II 5
Steam Dryer Stress Analysis mil Middle Hood/F&T Tie Bar Group IV Outer Hood Side Panel I Vane Bank End Wall Group V Outer Bank Discharge End panel I Middle Hood I Top Cover Group VI 6
III]
Steam Dryer Stress Analysis Noise Retained Modifications Old Tie Bar/Lock Gusset Reinforcing Bar ole Replace with TVA Gusset Group I lli; i
't:!
- ll~
-.L 3tL Drill Yo" DIA Re' ThtuP lie
~ Two (2) lJUssets are "'ll\\lired per C-vssel Pad s:eam dam. four (-4) iotal per unit.
~Oam(1 n
~
~
Existing Configuration at 4 Locations, Where Old TB Remnant and Lock Gusset Were Retained.
L/
Stress Intensities Seen in Base Plate, TB 1
Connection & Lock Gusset Connections.
Mod Removes this Configuration and Replaces with Revised Gusset as Found in all other Locations, Stiffens the top of Steam Dam with a ~
Pipe Section, & Reinforces the %" Thick Outer STEAM DAM GUSSET ASSEMBLY Hood Cover.
PATCH PLATE LOCATIONS DETAILS - BFN U1 7
Steam Dryer Stress Analysis 1m Noise Retained Modifications Inner Hood Stiffeners - Group II Limiting stress location is at bottom corner of Hood Stiffener 2 sided fillet weld. Addition of stress relief semi-circular hole reduces stress acting on weld and adds flexibility to corner.
Modifications provide a resultant SRF =.53 Previous Solid Sub Model Revised to Evaluate Stress Relief and Resultant SRF HOOD SlIPPORT
.2:5
~1.75
~.
I 3.f1E 3,1 000-TO-HOOD SUPPORT RELIEF HO ASEUNE DIMENSIONS 8
[iI]
Steam Dryer Stress Analysis Noise Retained Modifications Drain Channels - Group III DC Follow the Dryer Skirt Modal Response. Limiting Stress Location is at Bottom of Drain Channel Weld, that has been Already Reinforced and Wrapped Underneath the DC. Addition of Stress Relief Semi-circular Hole Reduces Stress Acting on Weld and Adds Flexibility to Corner.
Modifications Provide SRF =.43 Previous Solid Sub Model Revised to Evaluate Stress Relief and Resultant SRF 1Ia" Drain el(ref}j J'ttt R 3.50 (lefl-\\
~
A
114" Dryer Skirt (reI)__
18" [)fain Ch01f1nel (reI) -_~/
Semi-circu Re~H
'Nolie: These dimensi:>ns are g;ven as arc I~
along.!he O'..I"V3".ure of Section A-A drain Ch01f1 DRAIN CHANNEL END RELIEF HOLE CONCEPT 9
[iJJ Steam Dryer Stress Analysis Noise Retained Modifications 6 This n:et::h is appbcable only co lie bars spanning the ou~r ci;scharge duc.-:s. 4 reauired.
Middle Hood/F&T Tie Bar - Group IV One location, between outer and middle banks, has a high stress located under the tie bar in the weld to the hood section. Additional reinforcement using a reinforcing plate and additional welds is to be added.
Vane Rank A total of four (4) symmetrical locations will be Cover (rei) modified.
l~
~, [7/0-Max
,__.. __.--.-~
See FW'e
'j,I.
6"
C FLARED &TAPERED TIE BAR OUTER VANE BANK DISCHARGES See OU.:er Tie Bar-to-Hood Reinroreement DetI:iI Shee, 8,80t:om comers ma~ be rounded to 0.25" maximum rallYs
'thin % 1 inc:ll 01 flare break line to {aciSta:e welding.
~
1**1 l'
Surfac.e may be m.a.chined a requ'red ior lihlp if vane bank to hood offsl!l is Iessthill 114'_
10
Steam Dryer Stress Analysis mil Noise Retained Modifications Outer Hood Side Panel
/ Vane Bank End Wall Group V Limiting Component is the 3/8" thick Vane Bank End Closure Plate.
Structural Thickness Changes Of Drain Trough, behind Plate, Contribute to Stress Intensity. Mod Provides Reinforcement to Distribute Stress 318" x 2" Reinfordng Bar "7
3/8" Vane Bank 3/8" Outer Hood ~.
L-- End Plate (ref)
Closure Plate (ref)
Bf 1/4" Vane Bank Outlet Skle Trough Plate (ref) 1/2" x 6-1/2' Trough Upper Ring (ref) C ReinforCing Plate, Both SiOes (re.f) 1/2" Vane Bank Bottom Plate (ref)
End View - Outer Hood Closure-to-Vane 1/2" x6-1/2' Trough Reinforcing Plate (ref)
~ 318" Vane Bank End Plate (ref) -
316
~~..,
2' x 318" thk x 24" Ig Reinfordng Bar 318" Hood Closure Plate (ref) --'..., I lY Section A-A (Cut Thru Trough)
Section B-B (Cut Thru Perforated Plate) 11
[II]
Steam Dryer Stress Analysis R 0.25 (TVP)
Noise Retained Modifications
+
'A~
Outer Bank Discharge End panel
/Middle Hood/ Top Cover Group VI 114 Limiting stress is in the 1f4" thick hood cover plate and 1f4" attachment fillet weld. Mod provides additional reinforcement, additional 3.00 weldment, and stiffening.
B oJ! ~
..LJ
-L-
~-
~
MIDDLE HOOD/COVER PLATE/END CLOSURE REINFORCING GUSSET 0.25 0.75 SECTION B-B 12
[II]
Steam Dryer Stress Analysis
- Interim Operation at Limited Power o Based on stress analysis at 11 Oo~ OLTP with currently modified steam dryer o Low flow noise included o SR > 2.0 o Implement mid-cycle
- Operation at 120% OLTP after Additional Steam Dryer Modifications o Based on stress analysis at 1200~ OLTP with additional modifications to steam dryer o Low flow noise included o SR > 2.0 o Implement modifications Fall 2010 13
[II]
Steam Dryer Stress Analysis Planned Submittals
- 110 % OLTP o Load report o Stress report o Limit curves
- 120% OLTP o Load report o Stress report o Limit curves o Submodels
- Submittal by August 28 14
