international workshop on advanced reactor … · 2017-04-12 · emerging lead-cooled fast reactor...
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Emerging Lead-cooled Fast Reactor (LFR) Professor Il Soon HWANG (Seoul National University, Korea)
INTERNATIONAL WORKSHOP ON ADVANCED REACTOR SYSTEMS AND FUTURE ENERGY MARKET NEEDS OECD Conference Center, Paris, France
April 12, 2017
Enhanced Safety of Lead-cooled Fast Reactors derived from 80 reactor-year operating experiences of 15 reactors including seven (7) “Alfa Class Submarines”
Accident by
-Internal -External Events
Inert (no H2) Neg. Pressure FP Retention
Hydrogen Explosion
Recriticality
Dry-out Melt-down
B.P. = 1743 C Nat. Circulation
Pb)~UO2)
Off-site Rad. Release
GIF Roadmap 2013
Prof. Il-Soon Hwang (SNU) OECD Adv Rx Sys & Market April 2017 2
11Cr (HT9)
Corrosion rate of test
alloys in LBE at 600oC
11Cr-2.5Al-0.9Nb
(Alloy-1b, 1c, 1d)
14Cr-2.5Al-0.9Nb
(Alloy-1f)
Fe3O4 (Fe
, Cr, Al)
(Cr, Aol)xiodxeide
Al2O3
(Cr, Al) oxide
Al2O3
• Corrosion-resistant cladding on Code-Certified Materials
• S.G. Tubing Double-wall Leak-Before-Break (LBB)
• Coolant Chemistry Management (impurity, particles)
• Employing pure Lead (Pb) to suppress Polonium-210
Innovative and Ready Materials (FeCrSi, FeCrAl)
MIT
ALFRED
Prof. Il-Soon Hwang (SNU) OECD Adv Rx Sys & Market April 2017 3
Nuclear Engineering and Design · December 2013
Hybrid Modu
lar Reactor
Underground
Solar & Wind
Above Grou
nd
& On Harbor
Lucens UNPP (1969)
• Underground LFR Security and Seismic Resistance
• No Steam Generator Tube Rupture by Leak-Before-Break
• Main Steam Line Break Negative Reactor Pressure • No Radiation Release All Coal Plant Sites are Suitable for LFR
Prof. Il-Soon Hwang (SNU) OECD Adv Rx Sys & Market April 2017 4
Zero-radius Emergency Planning Zone (EPZ)
Market Attractiveness of Underground LFR
Prof. Il-Soon Hwang (SNU) OECD Adv Rx Sys & Market April 2017 5
• High Steam Temperature Coal Plant BOP can be Reused. • Large Thermo-Mechanical Margin Load Follow for Renewables • 30 year life for reactor and fuel No Refueling Cost • Economies of Multiples & Low Financial Risk
Security, Safeguards, Sustainability & Wastes
“CRADLE-TO-GRAVE”
• IFNEC (OECD/NEA-USA)
• INPRO (IAEA-RF)
Prof. Il-Soon Hwang (SNU) OECD Adv Rx Sys & Market April 2017 6
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