By undertaking nuclear power plant projects constantly, TEAM KOREA has maintained an edge in the global nuclear industry – in both technology and experience.

APR1000 / European Standard Design

The APR1000 is a medium capacity Gen III+ Pressurized Water Reactor(PWR), generating 1,000 MW of electrical power to comply with up-to-date international safety requirements.

To enhance plant safety with excellent performance, the APR1000 is based on the proven design and operating experience of the OPR1000 and the APR1400.

APR1000 Major Parameters


GENERAL PLANT DATA Gross Power Output 1,050 MWe
Thermal Power 2,825 MWth
Design Lifetime 60 years
Seismic Design Basis DBE 0.3g


REACTOR CORE Active Core Length 3.81 m
Core Diameter 3.124 m
Average Heat Flux at 100% Power 589.1 kW/m2
Number of Fuel Assemblies 177, 16×16
Fuel Cycle Length 12 to 24 months


Operating Pressure 15.5 MPa
Inlet Temperature 295.8℃
Outlet Temperature 327.3℃
Enhanced Safety
Safety Requirements & Targets
  • Incorporates latest IAEA-WENRA-EUR safety requirements As well as a code of federal regulations and regulatory guidelines of U.S.
    [ Safety Design Requirements ]
  • Established safety targets in accordance with IAEA SSR-2/1
    Set to meet CDF target 〈 1 x 10 -5/RY, LRF target〈 1 x 10 -6/RY

Practical Elimination(PE) of Large or Early Radioactive Releases
  • Provides appropriate design provisions for 10 phenomena based on latest IAEA-WENRA-EUR safety requirements
    [ Concept of Demonstration of Practical Elimination ]
7 Day Autonomy of Safe Shutdown for AOO, DBA and DEC
  • Provides sufficient/extended autonomy(with respect to operator actions & external supply) & No need to use non-permanent equipment until 7 days for all plant states
  • Only the safety classified & permanent systems are used to achieve below targets
[ Autonomy Design Concept ]
Advanced Design Features
Safety Systems for Design Basis Accident(DBA)
  • Safety Injection System (5IS)
    • 4 independent trains
    • Provide borated water to core with active & passive components
    • Fluidic device installed at the bottom of the Safety Injection Tank (SIT) passively and efficiently controls the safety injection flow into the core
  • Shutdown Cooling/Containment Spray System (5C5/CS5)
    • 4 trains both for 5C5 and CSS
    • 5C5 removes decay heat from core
    • C55 reduces containment pressure and removes fission products
  • Passive Auxiliary Feedwater System (PAF5)
    • Removes decay heat to reach shutdown cooling entry condition
    • Provides an independent means of passively returning condensate to the steam generator by using gravity force in the events where the MFW5 is unavailable
  • Spent Fuel Pool Cooling System (5FPC5)
    • Removes decay heat from spent fuels during normal operation
  • [ 4 Train Safety Injection System ]
  • [ IRWST ]
  • [ PAFS ]
Double Containment Building

[ Double Containment Building ]
  • Primary containment structure
    • Keeps the pressure boundary by liner plate
    • Provides biological shielding & reduces the radioactive release
  • Secondary containment structure Fully envelops the primary containment
    • Preserves structural integrity against airplane crash
    • Secondary containment HVAC system
Safety Features for Design Extended Condition(DEC)
  • Emergency Boration System (EBS)
    • Injects highly concentrated borated water into RCS through 4 DVI nozzles for diverse reactor trip
  • Diverse Containment Spray System (DC5S)
    • Controls containment pressure & removes fission products from the containment atmosphere during severe accidents
    • Diverse shutdown cooling in case of loss of RHR
  • Diverse Spent Fuel Pool Cooling System (DSFPCS)
    • Provides Diverse Spent Fuel Pool Cooling System for loss of spent fuel pool cooling
  • Emergency Reactor Depressurization System (ERD5)
    • Reduces the RCS Pressure before reactor vessel breach to prevent HPME
  • Passive Ex-Vessel Corium Retaining & Cooling System (PECS)
    • Retains & cools down the Ex-Vessel Corium after vessel failure with Core Catcher
    • Operated passively by gravity force
    [ PECS ] [ Core Catcher ]
  • Passive Autocatalytic Recombiner (PAR)

    [ PAR ]
    • Limit hydrogen concentration
    • Prevent hydrogen detonation
  • Aircraft Crash Protection Design Secondary containment provides barrier against a large, commercial aircraft crash
    • Strengthened external wall of the containment building & auxiliary building
    • *Separation of other safety important buildings
Diverse Safety Features
ExceHence in Construction
Top-Down Method
  • Use the Top-Down Method with Large Capacity Cranes to Reduce the Construction Period
[ Large Capacity Cranes ]
IT-Based Real Time Virtual Construction Management System
  • Utilize Accumulated Knowledge Adequately throughout Design, Construction & Operation Phases, etc.
  • Main Function is to Consistently Manage Information to Evolve the Construction Work to Process-Based Work To Further Implement with the Owner’s Plant Cycle Management
Outstanding Performance
Convenient Operation & Maintenance
  • Removable Shield Blocks & Covers Lower the Radiation Level to Allow Personal Access to the Containment during Power Operation
  • Integrated Head Assembly & Permanent Refueling Pool Seal Simplify Refueling Works
High Performance Fuel Assembly
Utilizes HIPER16™, an advanced fuel assembly with high thermal performance & enhanced seismic resistance Provides a thermal margin greater than 10%
  • Increased Discharge Burn-up Enables Refueling Cycles to Be Flexible from 12 to 24 Months
  • [ Integrated Head Assembly ]
  • [ HIPER 16™ ]
Grid Following Capability
  • Daily Load-Following & Frequency Control Capacity Enables the Plant to Respond to Power Demand Variations from the Grid