ML13309A859

V. C. Summer Construction Status and Lesson Learned AD Torres

ML13309A859
Person / Time
Site:	Summer
Issue date:	11/05/2013
From:	South Carolina Electric & Gas Co
To:	Office of New Reactors
Bloom S D, NRO/DCIP/IGCB, 415-2431
References
Download: ML13309A859 (26)

Text

VCSummerConstructionStatus V C Summer Construction Status and Lesson LearnedAD Torres Unit 2 & 3 Construction Status jilMajor Milestones*Completed Unit 2 Concrete Basemat

• Unit 2 Pouring of Major Auxiliary Building Walls

• Set U2 containment vessel bottom head FbiddSU2CddTbi BldSl*Fabricated and Set U2 Condensers an d Turbine BldSteel*Fabricated and Set Reactor Cavity Module

• ReceivedUnit2Reactorvesselonsite

• Received Unit 2 Reactor vessel on site*Installed Unit 3 basematrebar and completed BasematPour iil()Unit 2 First Nuclear Concrete (FNC)*First safety-related nuclearconcrete nuclear concrete placed in over 30 years*7,000 yds 3of continuously placed concreteconcrete*Placement began on March 9, 2011 and ltditllasted approximately 52 hours6.018519e-4 days <br />0.0144 hours <br />8.597884e-5 weeks <br />1.9786e-5 months <br /> Setting of U2 CR10 Setting of Unit2 Containment Vessel Bottom Head g(CVBH)*Set Date: 05/22/13

• Design Weight: 936 Tons

• Linear Feet of Weld: 2,253LiFtfRidWld22

• Linear Feet of Repaired Weld: 22*Weld Acceptance Rate: 99.02%

Setting of U2 CVBH g

U2ContainmentVessel(CV)Rings U2 Containment Vessel (CV) RingsCV Lower Ring is made up of:

FC*Four Courses*A lower and an Upper Equipment Hatch

• A lower and an Upper Personnel Hatch ff*An external Sti ffenerCVLower RingCV Middle Ring is made up of

• Four Courses

• AninternalStiffenerCV Middle Ring An internal Stiffener U2 Containment Vessel Rin g 1 Coatin gsggSteel surface preparation for inorganic zinc applicationInorganic zinc application in progress on U2 CV Ring 1 Unit3ContainmentVesselBottomHead(CVBH)

Unit 3 Containment Vessel Bottom Head (CVBH)June 2013October2013October 2013 Inside Containment CB65RtCltDiTkR CB66RCDT/RtCttP CB65 -Reactor Coolant Drain Tank RoomCB66 -RCDT/ Reactor Compartment Passageway CB65CA04CB66 Unit 2 CA04 Module

• Reactor Vessel Cavity

• Dimensions: 21'-0" W x 26'-6" H

• Approx. Design Weight: 90,000 lbs.

• Approx. 7,661 linear feet of weld

• Installed1436shearstudsInstalled 1,436 shear studs Unit 2 CA04 Module

• Lift and set with the Heavy Lift Derrick (HLD)

• Date:09/27/13Date: 09/27/13 Ui2AiliWllPl Unit 2 Auxiliary Wall Placements*16feettall3feetthick

• 16 feet tall, 3 feet thick*Top Elevation is 82'6"

• Line I, Area 5 completed 8/24/13*Line I, Area 2-3 completed 9/28/139/28/13*Line I, Area 4-7 completed 10/17/13 Unit 2 Aux Building Rebar InstallationColumn Lines I, 2, 4, 5, 11, and Q, up to El 82' 6" is substantially complete ColumnLineQColumnLine11lookingeasttowest Column Line QColumn Line 11, looking east to west.

U2 TB Major Component Installation jpCondenser B Lower Shell July 2013700 TonsSouthTGSupportCH80August2013 South TG Support CH80 August 2013650 Tons U2 TB Major Component Installation jpCenterTGSupportCH81ACtTGStCH81BCenter TG Support CH81A October 2013220 TonsCenter TG Support CH81B October 2013220 Tons U2 TB Major Equipment DeliveriesjqpDeaerator MSRLP Turbine Rotor Unit3Basemat Unit 3 BasematUnit 3 Basemat in June 2013Unit 3 Basemat in Oct 2013 Ui3BRbIlli Unit 3 Basemat Rebar InstallationShield Building Rebar, looking NorthtoSouthBattery Room Rebar , looking westtoeast North to Southwest to east Ui3BUnit 3 Base mat pour Unit2CA20Module Unit 2 CA20 Module*Approx. 85% of sub-modules have been dliddelivered*Assembly is ongoing within the Module Assembly Building (MAB)

• To date 11 wall sub-modules have been erected on the platen ToshibaMainStepUpTransformers

-230/26kVToshiba Main Step Up Transformers 230/26kVAssembly weight with oil -529,800lbs eachMain Tanks

• 3 in service, 1 spare

• 12,720 gallons each

• StoredAirFilledConservator Tanks

• Oil reservoir

• 730 gallons each

• StoredAirFilledStored Air FilledStored Air Filled VCSummerUnits2and3Switchyard VC Summer Units 2 and 3 Switchyard

• Online February 12, 2013

• Connection of 230kV transmission lines for SCE&G, and Santee Cooper

• Largest switch yard in the SCE&G S ystemgyy LLdLesson LearnedCditifthldtd

• Coordination of groups to help understand ITAAC*Strengthening the procedural controls of ITAAC programs-Roles and responsibilities for groups

-Stakeholder buy in

• Review of corrective action programs LLdLesson LearnedUdtdidditifITAACi

• Understanding and coordination of ITAAC issues away from site.

-Vendor inspections(NRC and Consortium)

-Vendor corrective actions that have a material ffITAACeffect ITAAC*Development of a common understanding of what is meant by material effects on an ITAAC's acceptance criteria.