Korea Nuclear Power Plants and Technology

1 ANA2017 Conference, Sydney, 6 Oct 2017 9 Presentation 5 Session 2 Korea Nuclear Power Plants and Technology Byung Jin LEE, KEPCO Engineering & Construction Company Biography Majoring in Nuclear Engineering, Byung Jin Lee received his degree from KAIST in Korea . He has an experience of 30 years in Nuclear Power plant design, starting his career at Korea Atomic Energy Research Institute and now working at KEPCO-E&C. He participated in the development of OPR1000, APR1400 and APR+ reactors, and is now working on a future advanced Nuclear reactor development project. Abstract This presentation will start with a brief history of Korea s Nuclear Technology self-reliance and follow-up efforts for evolution.

2 Key design features of APR1400 will be introduced together with major enhancements to avoid or cope with severe accidents like that occurred in Fukushima. The KEPCO Engineering & Construction Inc (KEPCO E&C) was founded in 1975 with the goal of accomplishing self-reliance in Power plant engineering Technology . The company focuses on reactor Technology and design as well as Technology support for the NPPs in operation. KEPCO E&C, with over 4,000 employees in total of which 1,800 are involved in the company s Nuclear business. KEPCO A&E has designed 22 Nuclear Power Plants . In 2009, KEPCO E&C participated in the bid to win a Nuclear Power plant project in Barakah, UAE, for the first exportation of Korean-model Nuclear Power plant, and are performing A/E (Architect Engineering) and NSSS ( Nuclear Steam Supply System) Design for the four APR1400 being constructed at Barakah.

3 In addition, from 2016, KEPCO E&C is participating in the engineering of a SMART Nuclear Power plant, which is a small to mid-sized Nuclear Power plant, to export to Saudi Arabia. ANA2017 Conference, Sydney, NSW06 October 2017 LEE, ByungJinThis document is the property ofKEPCO E&C and the use of this information is strictly prohibited without the permission of KEPCO E&CContents1 Korean Nuclear Technology Development2 Key Design Features of APR14003 Countermeasures for Severe Accidents4 Summary1 Korean Nuclear Technology Development2 Our Nuclear Reactors Today & Tomorrow31970s1980s1990s2000s1stPhase : Gen II2ndPhase : Gen II3rdPhase : Gen III5thPhase : Gen IVTurn-key base600 MWeStandardization (KSNP)Optimization (OPR1000)Evolutionary PWRs-APR1400-SMART(100 MWe)Revolutionary-SFR : U recycle andwaste minimization-VHTR : Hydrogenproduction4thPhase.

4 Gen III+Evolutionary PWRs-APR+(1500 MWe)with improved Economics and Safety-iPOWER2020s2030s2010s Technology Self-Reliance Design Standardization Improvements InnovationsStrategy for Large NPP Developments4 Unending Improvements to Stay Competitive Optimization to improve economics Based on experience of steady constructions and operation over 40 years Advanced Design to enhance safety and operational flexibility Up-to-date Safety Requirements ( Korea , USA, IAEA, UAE) Utility Requirements (domestic & world-wide: KURD, EPRI URD, EUR) Flexible Response to Market Demands Diversifying Portfolio APR1400 / EU-APR / US-APR APR+ APR1000 iPOWER Diversifying Applications Electricity, DesalinationAPR1400 APR+EU-APRAPR1000iPOWERF uture NPPsOPR1000US-APRE xtensive Validation Testing for ADFs5 Design Verifications for International Market6 EUR Certification of EU-APR US NRC Design Certification of US-APRKey Design Features of APR14007 Design Goals8 Gen-III NPPPERFORMANCE / ECONOMY Thermal Margin> 10 % Plant Availability> 90 % Unplanned Trip< Plant Capacity (Gross)1,455 MWe Plant Lifetime60 Years Refueling Cycle 18 Months Construction Period48 Months (Nthunit)

5 SAFETY Core Damage Frequency< 10-5/RY Containment Failure Frequency< 10-6/RY Seismic Design g OccupationalRadiation Exposure < 1 Man Sv/RYPlant Layout9 Economics Twin-unit arrangement & Compound building shared by two units Seismic resistance Common basematfor containment and auxiliary building Physical Separation Four-quadrant arrangement of safety systemsReactor Coolant System10 Safety Systems 11 SumpCONTAINMENTSITSITSITSIT S/GRVS/G RCPRCPRCPRCPRWST HPSIP LPSIP HPSIP LPSIPCONTAINMENTSITSITSITSIT S/GRVS/G SIP SIP SIP SIPIRWSTRCPRCPRCPRCPH uman-Machine Interface System12 Countermeasures for Severe Accidents13 Prevention & Mitigation of Severe Accident14 Protection from External Hazards15* EF : Enhanced Fujita scale of TornadoPost-Fukushima Safety Enhancements16 Summary17 Korean Nuclear Technology -Safe and Reliable 18 Proven and improved through accumulated experience of steady constructions and operation of 40 years APR1400, Evolutionary ALWR Advanced design features for safety and operational flexibility Reinforced design for severe accident mitigation Complying with global standards of Korea , USA, UAE, EU and IAEA One and only Gen-III NPP now in operation Five (5) more units under construction in Korea , and 4 units in the UAE Our innovation continues.

6 APR+ iPOWERT hank You!19