Lee Nuclear Station Overview Chris Fallon Bob Kitchen Paul Snead - PowerPoint PPT Presentation

EXHIBIT DEC-005 Lee Nuclear Station – Overview Chris Fallon – Bob Kitchen – Paul Snead 1

Duke Energy Carolinas Nuclear Fleet McGuire Nuclear Lee Nuclear Station Station Charlotte Spartanburg Oconee Columbia Nuclear Station Catawba Nuclear Station 2

2038 DEC Capacity by Fuel Type - Base IRP Hydro Coal 10% 17% Renew/DSM/EE Purchases 10% 0.2% Nuclear 17% Natural Gas 46% 3

Lee Site Background Site partially developed for Cherokee Nuclear Construction Activities Permits Previously Issued   Nuclear service water pond Environmental Impact Statement (Pond B)   Cooling water sedimentation Construction Permit basin (Pond A)   Excavation of power block 404 Permit   Partial construction of Unit 1 NPDES Permit containment 4

Site Cleanup 5

Site Cleanup 6

COLA Investigation Former Cherokee Unit 2 Excavation Cleaning Existing Lee Unit 2 Excavation Cleanup 7

Lee Nuclear Foundation Support 8

Engineering and Construction Planning Site Specific SSCs Design Infrastructure Design Site Construction Plan (70% Complete) (90% Complete) (70% Complete)  Commercial Buildings  Site Construction Schedule  Circulating Water System (CWS)  Water and Sewer  Construction Staffing & Training  Storm Drain System (DRS)  Rail and Road Improvements  Temporary Buildings  Potable Water System (PWS)  Make-Up Pond C Dam  Assembly Pads, Areas & Modules  Raw Water System (RWS)  Laydown & Staging Areas  Liquid Radwaste System (WLS)  Excavation/Backfill  Waste Water System (WWS)  Heavy Lift Crane  Offsite Retail Power System (ZRS)  Batch Plant Concrete Qualification Training Building and Office Building River Water Intake Structure (RWS) 9

Lee Site Layout Unit 2 Cooling Towers Broad River Make Up Unit 2 Pond A Ninety Nine Make Up Islands Unit 1 Pond B Dam Switchyard Unit 1 Cooling Towers N 10

Lee Nuclear and Make-Up Pond C Sites 11

Lee COLA Safety Content – Exemptions  Standard (Reference COL)  DCD Numbering and Organization  Special Nuclear Material Control and Accountability (MC&A) Program Description (Consistent with Part 50 requirements)  Lee COLA  Condensate Return Design Change  Main Control Room Dose  Main Control Room Heatup  Combustible Gas Control in Containment  Source Range Neutron Flux Doubling Block Permissive 12

Site Specific Seismic Evaluation  Structures  Major Equipment Evaluation per  Piping Systems and AP1000 DCD Supports  Equipment Qualification 13

Duke Energy Carolinas Common EOF McGuire Nuclear Assembly Station Area EOF Oconee Lee Nuclear Nuclear Station Station Catawba Nuclear Station 14

Duke Energy Fleet License Amendment Request Common EOF EOF Harris Nuclear Plant HB Robinson Nuclear Plant Brunswick Nuclear Station 15

Environmental  ER and FEIS – SMALL or MODERATE impacts  SCDHEC issued NPDES Operating Permit in July 2013  Water Management Plan  Alternate water withdrawal requirements – EPA concurred  SCDHEC issued 401 Water Quality Certification in January 2014  US Army Corps of Engineers 404 Permit issued September 2015 16

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