ANA2017 Conference, Sydney, 6 Oct 2017 9

Presentation 5 – Session 2

Korea Nuclear Power Plants and Technology

Byung Jin LEE, Ph.D

KEPCO Engineering & Construction Company

Biography

Majoring in Nuclear Engineering, Byung Jin Lee

received his Ph.D. 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. 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. 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, NSW

06 October 2017

LEE, Byung Jin

This document is the property of

KEPCO E&C and the use of this information is

strictly prohibited without the permission of KEPCO E&C

Contents

1 Korean Nuclear Technology Development

2 Key Design Features of APR1400

3 Countermeasures for Severe Accidents

4 Summary

1

Korean Nuclear Technology Development

2

Our Nuclear Reactors Today & Tomorrow

3

1970s 1980s 1990s 2000s

1st Phase : Gen II2nd Phase : Gen II

3rd Phase : Gen III

5th Phase : Gen IV

Turn-key base

600 MWe

Standardization

(KSNP)

Optimization

(OPR1000)

Evolutionary

PWRs- APR1400

- SMART(100MWe)

Revolutionary- SFR : U recycle and

waste minimization

- VHTR : Hydrogen

production

4th Phase : Gen III+

Evolutionary

PWRs- APR+(1500MWe)

with improved

Economics and Safety

- iPOWER

2020s 2030s2010s

Technology Self-Reliance

Design Standardization

Improvements

Innovations

Strategy for Large NPP Developments

4

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, Desalination

APR1400

APR+

EU-APR

APR1000

iPOWER

Future NPPs

OPR1000

US-APR

Extensive Validation Testing for ADFs

5

Design Verifications for International Market

6

EUR Certification of EU-APR

US NRC Design Certification of US-APR

Key Design Features of APR1400

7

Design Goals

8

Gen-III NPP

PERFORMANCE / ECONOMY

• Thermal Margin > 10 %

• Plant Availability > 90 %

• Unplanned Trip < 0.8/RY

• Plant Capacity (Gross) 1,455 MWe

• Plant Lifetime 60 Years

• Refueling Cycle ≥ 18 Months

• Construction Period 48 Months (Nth unit)

SAFETY

• Core Damage Frequency < 10-5/RY

• Containment Failure Frequency < 10-6/RY

• Seismic Design Basis 0.3 g

• Occupational Radiation Exposure < 1 Man·Sv/RY

Plant Layout

9

Economics

✓ Twin-unit arrangement & Compound building shared by two units

Seismic resistance

✓ Common basemat for containment and auxiliary building

Physical Separation

✓ Four-quadrant arrangement of safety systems

Reactor Coolant System

10

Safety Systems

11

Sump

CONTAINMENT

SIT SIT

SIT SIT

S/G RV S/G

RCP RCP

RCP RCP

RWST

HPSIP

LPSIP

HPSIP

LPSIP

CONTAINMENT

SIT SIT

SIT SIT

S/G RV S/G

SIP

SIP

SIP

SIP

IRWSTRCP

RCP

RCP RCP

Human-Machine Interface System

12

Countermeasures for Severe Accidents

13

Prevention & Mitigation of Severe Accident

14

Protection from External Hazards

15

* EF : Enhanced Fujita scale of Tornado

Post-Fukushima Safety Enhancements

16

Summary

17

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.

✓ APR+

✓ iPOWER

Thank You!

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