ML112430561

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TVA Presentation - WBN Unit 2 Wrag Presentation
ML112430561
Person / Time
Site: Watts Bar Tennessee Valley Authority icon.png
Issue date: 09/01/2011
From:
NRC/RGN-II/DCP/CPB2
To:
Tennessee Valley Authority
References
Download: ML112430561 (34)
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Text

TENNESSEE VALLEY AUTHORITY WATTS BAR NUCLEAR PLANT UNIT 2 WATTS BAR NUCLEAR PLANT UNIT 2 WBN Unit 2 WRAG Presentation August 24, 2011

Agenda

  • Transition to Operations - Lorek Transition to Operations Lorek
  • Closure Packages / Inspection Status - Crouch H i B

k I

Elli tt

  • Heinemann Breaker Issue - Elliott
  • Fukushima Response - Freeman
  • Questions 2

Crouch

WBN2 Completion Status

  • Project Status Update
  • Construction Productivity / Summer Push
  • Construction Productivity / Summer Push
  • Startup Productivity / Fall Push B

kl

/ P R d i

  • Backlog / Program Reduction
  • Major Milestone Schedule 3

Stinson

WBN2 Completion Status Engineering

  • Overall Progress - 89% complete
  • Current Focus Areas and Challenges g

- Field Support

- Corrective Action Programs and Special Programs Completion I

ti S

t

- Inspection Support Construction S

f ll l

d i d f h U i 1

  • Successfully completed scope required for the Unit 1 outage
  • Improved direct work productivity (19.7% to 25%)
  • Overall Progress - >70.0% complete C

t F A

d Ch ll

  • Current Focus Areas and Challenges

- Closing PERs and Work Order Backlogs

- Writing new work plans Completing Systems

- Completing Systems 4

Stinson

WBN2 Completion Status Startup Testing

  • Thirty-two systems turned over to Startup Test Organization with four completed in July
  • Near Term Milestones
  • Condenser Hydro Complete
  • Partial Fill of U2 Reactor Vessel Complete
  • Partial Fill of U2 Reactor Vessel Complete
  • Condenser Short Cycle Operation Complete C

d L

C l O ti 10/1/11

  • Condenser Long Cycle Operation 10/1/11
  • Turnover to Operations
  • System 44 (Turbine Building Heat) 8/19/11A 5

Stinson

WBN2 Completion Status Component Testing - Reactor Vessel Pre-Service Inspection 6

Stinson

WBN2 Completion Status Area Completion - Control Room 7

Stinson

WBN2 Completion Status Area Completion - RHR Pump Room 8

Stinson

WBN2 Completion Status Area Completion - Turbine Deck 9

Stinson

WBN2 Completion Status Area Completion - Turbine Building 729 Elevation 10 Stinson

WBN2 Completion Status Area Completion - Main Turbine Deck 11 Stinson

WBN2 Completion Status Area Completion - Main Turbine Deck 12 Stinson

Construction Productivity - Summer Push Mar -10 Apr-10 May -10 Jun-10 Jul-10 Aug-10 Sep-10 Oct-10 Nov-10 Dec-10 Jan-11 Feb-11 Mar-11 Apr-11 May-11 Jun-11 Jul-11 Aug-11 Sep-11 Oct-11 Nov-11 Dec-11 Jan-12 Feb-12 Mar-12 Apr-12 May-12 Jun-12 Jul-12 SYSTEM TURNOVER SKYLINE - DECEMBER - 2012 FUEL LOAD SUMMER PUSH 030H 271 061 015 001 031 078 US 46.1 081.1 006 244 063 079 068 030G 094 270 047B 037 063.1 014 030D 030J.1 202 033 077 030J 030B 030C 040 064 047A 061.0 046A 209 067.3 030N 005 067 081 013 072 003A 026 003B 084 085 030K 280 035B 032 024 261 002.2 210 054 030O 203 058 002 030A 074 062 059 250 030L 092 065 090 268 027 055 098 24 1 007 035C 035A 099 067 1 067 2 047C 030M 030F 036 030E 070 201 304 234 041 043 251 052 228 030I 046B 13 027 055 098 24.1 007 035C 035A 099 067.1 067.2 047C 030M 030F 036 030E 070 201 304 234 041 043 251 052 228 030I 046B Stinson

Startup Productivity - Fall Push 05-2012 08/01/11 08/15/11 09/09/11 10/15/11 WBN UNIT 2 START-UP GROUP - FALL PUSH DATE: 08/02/11 READY FOR HYDRO MAIN CONDENSER READY FOR EST SHORT CYCLE READY FOR EST LONG CYCLE EST MAIN CONDENSER VACUUM TB READY FOR HFT READY FOR MFW PUMP RECIRC 002-Condensate 006 - Heater Drns & Vents 003A - Main & Aux Feedwater 030M - TB Supply Fans 005 - Extraction Steam 014 - Condensate Demineralizer 030N - TB Exhaust Fans 007 - turbine Extraction Traps & Drns 024 - Raw Cooling Wtr 036 - Feedwater Secondary Treatment 027 - Condensate Circulating Wtr 030O TB Pump & Clrs 040 - Station Drainage Sys (TB Portion Only) 032 - Control Air 043 - Sampling & Wtr Quality Sys (TB Portion Only) 037 - Gland Seal Water Sys 046A - Main Fw Ctrl Sys 054 - Injection Wtr Sys 201 - 6.9kV Unit Pwr 203 - 480V Unit Pwr Sys TURBINE ON GEAR 203 - 480V Unit Pwr Sys 209 - TB Mtr Opr Vlv Pwr 210 - TB Ventilation Pwr 058 - Gen Bus Cooling Sys 035A - Gen Hydrog Clr Sys 244 Main Gen Elec 7 24kV Pwr 035B Gen Hydrog Seal Oil TURBINE ON GEAR GEN COOLING &

STATOR WATER I/S MAIN GEN

& BUS 244 - Main Gen Elec 7 24kV Pwr 035B - Gen Hydrog Seal Oil 035C - Stator Cooling Wtr 044 - Bldg Heat Sys 047A - Turbine Control Oil 047B - Turbine Lube Oil 047C - Turbine Steam Seal 033 - Service Air Sys (TB Portion Only)

FALL PUSH 14 Stinson TURNED OVER TO STARTUP s:\\u2\\Special\\U2_Reports\\Major Milestones\\WBN2-SU-Major-Milestones

Backlog Reduction / Development

  • Work Order Closure
  • PER Closure
  • Work Plan Backlog Development 15 Stinson

Work Order Backlog Reduction 16 Stinson Stinson

PER Closure 2600 2700 2800 150 160 TOTAL Open Engineering & Construction PERs 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 2500 90 100 110 120 130 140 lative mental 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 30 40 50 60 70 80 Cumu Increm PlannedWeeklyClosures WeekEnding 0

100 200 300 400 0

10 20 7/9/11 7/13/11 7/20/11 7/27/11 8/3/11 8/10/11 8/17/11 8/24/11 8/31/11 9/7/11 9/14/11 9/21/11 9/28/11 10/5/11 10/12/11 10/19/11 10/26/11 11/2/11 11/9/11 11/16/11 11/23/11 11/30/11 12/7/11 12/14/11 12/21/11 12/28/11 1/4/12 1/11/12 1/18/12 1/25/12 2/1/12 Actual New PERs PERs Closed W/E Open PERs 7/9/11 7/13/11 7/20/11 7/27/11 8/3/11 8/10/11 8/17/11 8/24/11 8/31/11 9/7/11 9/14/11 9/21/11 9/28/11 10/5/11 0

60 71 91 110 149 85 0

42 47 72 67 74 67 2639 2629 2605 2586 2543 2468 2450 WeekEnding PERsClosed ActualNewPERs W/E O PER 17 2639 2629 2605 2586 2543 2468 2450 68 68 68 68 68 68 68 68 68 68 68 68 68 68 W/EOpenPERs AssumedNewPERs Stinson

PER Closure 3500 4000 250 TOTAL Engineering & Construction PER Corrective ACTION Work-off Plan 2000 2500 3000 3500 150 200 umulative remental Planned Weekly Closures 500 1000 1500 50 100 Cu Inc Accelerated

~50Ppl PlannedWeeklyClosures WeekEnding 0

0 7/9/11 7/13/11 7/20/11 7/27/11 8/3/11 8/10/11 8/17/11 8/24/11 8/31/11 9/7/11 9/14/11 9/21/11 9/28/11 10/5/11 10/12/11 10/19/11 10/26/11 11/2/11 11/9/11 11/16/11 11/23/11 11/30/11 12/7/11 12/14/11 12/21/11 12/28/11 1/4/12 1/11/12 1/18/12 1/25/12 2/1/12 2/8/12 2/15/12 2/22/12 2/29/12 3/7/12 3/14/12 3/21/12 3/28/12 PlannedWeeklyClosures 0

0 0

0 0

0 0

0 0

0 0

0 0

0 0

0 0

0 EndingDate 7/9/11 7/13/11 7/20/11 7/27/11 8/3/11 8/10/11 8/17/11 8/24/11 8/31/11 9/7/11 9/14/11 9/21/11 9/28/11 10/5/11 10/12/11 10/19/11 10/26/11 11/2/11 AcceleratedTarget(237) 3593 3628 3636 3592 3490 3388 3286 3184 3082 2980 2878 2776 2674 2572 2470 2368 2266 2164 ACTIONsClosed 0

58 116 147 172 199 191 0

0 0

0 0

0 0

0 0

0 0

Assumed New ACTIONs 0

135 135 135 135 135 135 135 135 135 135 135 135 135 135 135 135 135 Actual New ACTIONs ACTIONs Closed W/E Actual Open ACTIONs Accelerated Target (237) 18 AssumedNewACTIONs 0

135 135 135 135 135 135 135 135 135 135 135 135 135 135 135 135 135 ActualNewACTIONs 0

93 124 103 196 116 158 0

0 0

0 0

0 0

0 0

0 0

W/EActualOpen ACTIONs 3577 3612 3620 3576 3600 3517 3480 Stinson

Construction Planning Summary Forecast Completion of Present Backlog 160 179 179 169 169 169 169 161 180 200 UNIT RATE: 32 MH/WO Mechanical Work Order ImprovementPlan 106 117 117 130 144 122 105 140 131 122 119 112 105 107 105 120 140 160 W

o M

a 93 70 85 60 80 100 r

k O

r d

n p

o w

e r

20 40 Forecast Work Off Actual WOs e

r s

0 06/05/11 06/12/11 06/19/11 06/26/11 07/03/11 07/10/11 07/17/11 07/24/11 07/31/11 08/07/11 08/14/11 08/21/11 08/28/11 09/04/11 09/11/11 09/18/11 09/25/11 10/02/11 Actual WOs 19 Stinson

Major Milestone Schedule 08/01/12 12/15/12 07/03/12 07/11/12 07/29/12 08/01/12 WBN UNIT 2 STARTUP MAJOR MILESTONES Revised Date: 8/15/11 10/10/11 10/10/11 07/03/12 07/11/12 07/29/12 08/01/12 08/01/12 Late Fall 2012 RCS FILL &

COLD HYDRO SECONDARY ILRT HFT CORE LOAD START OPEN VESSEL TESTING WINDOW (LOGIC / FLUSHING) 030A-AB Room & Area Coolers 013 - Fire Detection 052 - Loose Parts Monitoring 030E - Ctmt Air Return Fans 002 - Condensate 001 - Main Steam Sys 030B - AB Space Heaters 032 -Control Air Sys 068 - Reactor Coolant 030H - Lower Compartment Clrs 030F - Ctmt Vent Air Cleanup Units 003 - Main & Aux Feedwater 003A - Main Feedwater 030K - Rx Bldg Space Heaters 055 - Annunciator 202 - 6.9kV Rx Coolant Pmp Pwr 094 - Incore Instr Sys RDA 030J - Containment Purge 005 - Extraction Steam 003B - Aux Feedwater 078 - Spent Fuel Pit Cooling Sys 062 - Chemical & Volume Cntl Sys 061 - Ice Condenser 006 - Heater Drns & Vents 015 - Steam Gen Blowdown 079 - Fuel Handling & Str Sys 063 - Safety Injection Sys 064 -Primary Containment Sys 007 - Turbine Extraction Traps & Drns 030C - N&S Vlv Vault Exhaust 084 - Flood Mode Boration Sys 063.1 - Safety Injection Partial 065 - Emergency Gas Treatment (EGT014 - Condensate Demineralizer 030D - TDAFW Pmp Rm Exhaust Fan 092 - Neutron Monitoring Sys 067 - Essential Raw Cooling Water 072 - Containment Spray 024 - Raw Cooling Wtr 030G - Upper Compartment Clrs 228 - Aux Bldg Lighting Sys 070 - Component Cooling Water Sys 090 - Radiation Monitoring 026 - High Pressure Fire Protection 030I - CRDM Clrs 234 - Heat Trace Sys 074 - Residual heat Removal Sys 027 - Condensate Circulating Wtr 030L - Pres, Temp & Humidity Mon.

268 - Perm. Hydro Mitigation Sys 077 - Waste Disposal 030M - TB Supply Fans 031 - Incore Inst Rm A/C 270 - TB Crane & Misc Sys 081 Primary Makeup Water Sys 030N TB Exhaust Fans 041 Layup Water Treatment Sys 271 Ctmt & AB Cranes & Misc 081 - Primary Makeup Water Sys 030N - TB Exhaust Fans 041 - Layup Water Treatment Sys 271 - Ctmt & AB Cranes & Misc 098 - Foxboro IA 032 - Control Air 043 - Sampling & Wtr Quality Sys 099 - Reactor Protection Sys 033 - Service Air Sys 046B - Aux FW Ctrl Sys 261 - Plant Computer Sys 035A - Gen Hydrog Clr Sys 059 - Demin Water & Cask Decon 035B - Gen Hydrog Seal Oil 085 - Control Rod Drive Cbnt Refurb 035C - Stator Cooling Wtr 250 - Auto/Manual/Public Phone 036 - Feedwater Secondary Treatment 251 - Sound-Powered Phone 037 - Gland Seal Water Sys 040 - Station Drainage Sys 044 - Bldg Heat Sys 046A - Main Fw Ctrl Sys 047A - Turbine Control Oil 047B - Turbine Lube Oil 047C - Turbine Steam Seal 054 - Injection Wtr Sys 058 - Gen Bus Cooling sys 201 - 6.9kV Unit Pwr 203 - 480V Unit Pwr Sys 209 - TB Mtr Opr Vlv Pwr 210 - TB Ventilation Pwr 244 - Main Gen Elec 7 24kV Pwr 300 - TB Pump / Space Clrs 20 300 TB Pump / Space Clrs TURNED OVER TO STARTUP S:\\U2\\SPECIAL\\U2_REPORTS\\MAJOR MILESTONES\\WBN2-SU-Major-Milestones Stinson

Transition to Operations

  • Management Review Meetings (Oversight by CNO, VP of Operations, NSRB, etc)
  • Permanent Staffing Additions & Operator Training Dual Unit Licenses Unit Differences Common System Operation Common System Operation
  • Department Transition Plans Self Assessments/Open Items
  • Procedure Development/Revision
  • System Turnover 21 Lorek

Closure Packages

  • Programmatically Closing Commitments Closure Procedure Established NPP Volume IV Corrective Action Programs (CAP)/Special Programs (SP)

Commitments (NRC Generic Communications, TVA Letters, etc)

Tracking/Information Exchange Mechanism Established Tracking/Information Exchange Mechanism Established Incorporation of Lessons Learned Regarding Package Quality

  • Dedicated/Trained Closure Team Established
  • Quality Assurance Oversight Cl S
  • Closure Status CAP and Special Programs Commitments 22 Crouch

CAP/SP Closure Status 23 Crouch

Commitments Closure Status Closure Group - NRC Communications and Commitments Total Items - ~1040 (beginning mid-2010 to date)

Closed - ~435; Open - ~605 211 added since 1/1/11; 258 closed since 1/1/11 Developing Closure Packages Engineering Complete Engineering Complete Field Complete 24 Crouch

Commitment Closure Status 25 Crouch

Commitment Closure Status 26 Crouch

Commitment Closure Status 27 Crouch

Inspection Support Status

  • WBN2 Resident Inspectors / Region II Inspection Teams
  • One to Four Inspections per Week CAPs/SPs Generic Communications
  • Dedicated WBN2 Support Teams
  • Dedicated WBN2 Support Teams Engineering Construction Procurement
  • Approximately 70 Inspections Performed To Date 28 Crouch

Heinemann Circuit Breaker

  • Actions TVA Responses Provide Justification for Testing Performed Example 1 Mounting Method Adequacy Example 1 - Mounting Method Adequacy
  • Breakers Rigidly Mounted in Boards (Tightly Clamped between Front Panel (10 Gauge Steel Plate with Rolled Edges) and 2 Steel Angles (3/16 Thick)
  • Bolted Connection to Copper Buss Bar Provides Additional Rigidity
  • Bolted Connection to Copper Buss Bar Provides Additional Rigidity
  • No Localized Flexibility of Mounting and Hence No Movement Induced Impacts
  • 1974 Tested Entire Assembly and Measured Local Accelerations
  • 1974 Qualification Test in Compliance with Requirements of IEEE 344-1971
  • 1992 Test of Single Breaker Attached Directly to a Rigid Fixture on Shake Table Using Conservative Values from 1974 Testing 29
  • 1992 Test Used a Suitable Mounting Method Meeting the Requirements of IEEE 344-1975 Elliott

Heinemann Circuit Breaker Example 1 - Mounting Method Adequacy (Contd) 1992 Test - Industry Standard Method of Seismic Qualification for Device Testing 1974 and 1992 Qualification Tests Reviewed to Confirm Consistency with Field Configuration Q

y g

TVA Performed Calculation to Demonstrate Actual Mounting is Rigid TVA Revised Drawing to Document the Acceptability of EPDM as an Installation Aid Clamping Pressure Does Not Hinder Operation of Breakers p g p

Independent Review Performed by Seismic Qualification Expert Validated Above Approach Breakers are Mounted So That There is No Local Amplification and Thus 1974 and 1992 Test Data is Applicable Mounting Method Corrective Actions Breakers Confirmed Properly Mounted with Bezel Extending Through Front Panel and Angles in Contact with Rear of the Breakers Revision to Installation Procedure Guidance - September 2011 Revision to Installation Procedure Guidance September 2011 Revised Calculation and Drawings to be Consistent with Configuration and to Document Qualification

==

Conclusion:==

Current Breaker Mounting Configuration in Full Compliance with Requirements of IEEE 344-1975 30 Elliott

Heinemann Circuit Breaker Example 2 - Equivalency Evaluation Breaker Reconfigured Slightly but No Impact on Seismic Qualification M

f M d P d

i Ch b

Did N Ch P

N b

S h i

Manufacturer Made Production Change but Did Not Change Part Number or Schematic Non-Safety Related Auxiliary Contact Switch Mounting Revised Micarta Spacer Board Added by TVA-Insignificant Weight Addition Performed Equivalency Evaluation Addressing Vendor Changes and Use of Spacer Board Breaker Configuration Changes Captured in TVA Inventory Control and Drawing

==

Conclusion:==

Equivalency Evaluation, Inventory Control and Drawings Consistent with Modified Breakers. Modified Breakers Covered By Seismic Qualification Testing Discussed Above.

31 Elliott

Fukushima Response WBN Licensing Basis Addresses Flooding Including Wave Run Up Maximum Possible Precipitation Upstream Dam Failures Upstream Dam Failures WBN Licensed as a Wet Site with Selected Equipment Protected Shield Building (Containment) Sealed E

Di l G t

d F l T k P t

t d f Fl di Emergency Diesel Generators and Fuel Tanks Protected from Flooding Essential Raw Cooling Water Pumps Above Flood Level

Turbine, Control and Auxiliary Buildings Allowed to Flood with Required Equipment Protected Seismic Design Exceeds Maximum Expected Earthquake Equipment Seismic Qualification Piping System Seismic Design Backup Capabilities Onsite Electrical Water Delivery 32 Freeman

Fukushima Response

  • TVA Evaluating Task Force Report
  • Evaluating Options to Extend:

Flood Protection Station Blackout Electrical Coping Duration Water Delivery Capability Water Delivery Capability Procedural Enhancements Multi-Unit Events Emergency Planning 33 Freeman

QUESTIONS?

34

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