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, NRO/DCIP/IGCB, 415-2431
References
Download: ML13309A859 (26)

Text

V C Summer Construction Status and Lesson Learned AD Torres

Unit 2 & 3 Construction Status Majorj Milestones il

• Completed Unit 2 Concrete Basemat

• Unit 2 Pouring of Major Auxiliary Building Walls

• Set U2 containment vessel bottom head

• F bi Fabricatedd and d SSet U2 C Condensers d andd TTurbine bi Bld Steel S l

• Fabricated and Set Reactor Cavity Module

• Received Unit 2 Reactor vessel on site

• Installed Unit 3 basemat rebar and completed Basemat Pour

Unit i 2 First i Nuclear l Concrete ((FNC))

• First safety-related nuclear concrete placed in over 30 years

• 7,000 yds3 of continuously placed concrete

• Placement began on March 9, 2011 and l t d approximately lasted i t l 52 hours6.018519e-4 days <br />0.0144 hours <br />8.597884e-5 weeks <br />1.9786e-5 months <br />

Setting of U2 CR10 Settingg of Unit2 Containment Vessel Bottom Head (CVBH)

• Set Date: 05/22/13

• Design Weight: 936 Tons

• Linear Feet of Weld: 2,253

• Linear Li FFeett off R Repaired i dW Weld:

ld 22

• Weld Acceptance Rate: 99.02%

Settingg of U2 CVBH U2 Containment Vessel (CV) Rings CV Lower Ring is made up of:

• Four F C Courses

• A lower and an Upper Equipment Hatch

• A lower and an Upper Personnel Hatch

• An external Stiffener ff CV Lower Ring CV Middle Ring is made up of:

• Four Courses

• An An internal Stiffener CV Middle Ring

U2 Containment Vessel Ringg 1 Coatings g Steel surface preparation for inorganic zinc application Inorganic zinc application in progress on U2 CV Ring 1

Unit 3 Containment Vessel Bottom Head (CVBH)

June 2013 October 2013

Inside Containment CB65 - R t C Reactor l tD Coolant i TTankk R Drain Room CB66 - RCDT/ R t C Reactor t tP Compartment Passageway CB65 CA04 CB66

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

• Installed 1 1,436 436 shear studs

Unit 2 CA04 Module

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

• Date: 09/27/13

U i 2 Auxiliary Unit A ili W Wallll Pl Placements

• 16 feet tall, tall 3 feet thick

• Top Elevation is 826

• Line I, Area 5 completed 8/24/13

• Line I, Area 2-3 completed 9/28/13

• Line I, Area 4-7 completed 10/17/13

Unit 2 Aux Building Rebar Installation Column Lines I, 2, 4, 5, 11, and Q, up to El 82 6 is substantially complete Column Line Q Column Line 11, 11 looking east to west.

west

U2 TB Major j Component p Installation Condenser B Lower Shell July 2013 700 Tons South TG Support CH80 August 2013 650 Tons

U2 TB Major j Component p Installation Center TG Support CH81A Center C t TG SSupportt CH81B October 2013 October 2013 220 Tons 220 Tons

U2 TB Major j Equipment q p Deliveries Deaerator MSR LP Turbine Rotor

Unit 3 Basemat Unit 3 Basemat in June 2013 Unit 3 Basemat in Oct 2013

U i 3 Basemat Unit B Rebar R b IInstallation ll i Shield Building Rebar, looking Battery Room Rebar , looking North to South west to east

U i 3 Base Unit B mat pour

Unit 2 CA20 Module

• Approx. 85% of sub-modules have been delivered d li d

• Assembly is ongoing within the Module Assembly Building (MAB)

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

Toshiba Main Step Up Transformers - 230/26kV Assembly weight with oil - 529,800lbs each Main Tanks Conservator Tanks

• 3 in service, 1 spare

• Oil reservoir

• 12,720 gallons each

• 730 gallons each

• Stored Air Filled

• Stored Air Filled

VC Summer Units 2 and 3 Switchyard

• Online February 12, 2013

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

• Largest g switchyard y in the SCE&G System y

L Lesson LLearned d

• C Coordination di ti off groups tto h help l understand d t d ITAAC

• Strengthening the procedural controls of ITAAC programs

- Roles and responsibilities for groups

- Stakeholder buy in

• Review of corrective action programs

L Lesson LLearned d

• U Understanding d t di and d coordination di ti off ITAAC iissues away from site.

- Vendor inspections(NRC and Consortium)

- Vendor corrective actions that have a material effect ff ITAAC

• Development of a common understanding of what is meant by material effects on an ITAACs acceptance criteria.