ML13309A859
| 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.