총 40페이지

Prometheus
electrons.Atthattime,high-levelradioactivenuclearwaste,*whichiswellknownasariskfactorfornuclearpower,is
generated.Inaddition,nuclearfissionpowerisatgreatriskbecauseitisimpossibletostopwithoutexternalintervention
onceitsenergygenerationbegins.Onthecontrary,fusionpowerusestheenergygeneratedwhenatomicnucleicombine.
Itisamethodofcombininglightatomicnucleisuchashydrogentoformheavyatomicnuclei,butunlikenuclearpower,
high-levelradioactivematerialsarenotproduced.Althoughsomeradioactivematerialisusedintheprocess,thehalf-
life*isabout12years,whichisalotshorterthanthatofmaterialsusedinnuclearenergy,whichtakesabout700million
to 4.5 billion years. So, there is almost no risk of radioactive contamination. In addition, Na Yong-su, Professor of
NuclearEngineeringatSeoulNationalUniversity,explained,“Justasthefirerathergoesoutiftoomanytreesareputin
itduringacampfire,nuclearfusionpowergeneratesconsiderableenergywithalittlefuelandstopsifthere’stoomuch
fuel.”Inthefirstplace,fuelisaddedlittlebylittleandiftoomuchisaddedthereactorstopsgenerating,whichmakesit
impossibletoexplode.
*High-levelradioactivenuclearwaste:Wastewithhigh-intensityradiationgeneratedduringreprocessingofremainingnuclearfuelornuclearfuel.
*Atoms, Elements: Atoms are the smallest particles that can no longer be split, and elements are the basic components of materials that can no longer be
decomposed.Forexample,awatermoleculecalledH20isasubstanceconsistingoftwohydrogenatomsandoneoxygenatom,andtwoelements,hydrogen
andoxygen.
*Half-life:Theperiodoftimeittakestobehalved.Itisoneofthefactorsthatshowstheeffectsorrisksofradioactivematerials.
StudywiththeWorld
The world is now working together for the success of fusion energy power. The International Thermonuclear
Experimental Reactor (ITER) is a large superconducting fusion experiment device designed to ensure minimum
generationefficiencythatcancommercializefusionenergy.Itisthelargestjointstudyinhistory,combiningtheefforts
oftheEuropeanUnionandsixcountries:SouthKorea,theUnitedStates,Russia,China,Japan,andIndia.Eachcountry
manageseachpartoftheITERdevice,andthenmergesit.TheKoreaSuperconductingTokamakAdvancedResearch
(KSTAR) is a Korean nuclear fusion reactor that succeeded in independent development by South Korea in 2007.
ThankstoKorea,KSTARandITERhavethesameoperationmethodas“High-Confinementmode(H-mode).”H-mode
has been able to compensate for the chronic problem that the fusion reactor stops when the internal environment
becomesunstable.Sincethen,thepossibilityofsuccesshasincreased,asitispossibletoavoidtheproblemofimpurities
madeduringtheoperationstoppingthedevice.
Although each country has device manufacturing
ⓒSciTechDaily
technology, the reason they study together is mass
production. Fusion power reactors developed by
individual countries, such as KSTAR, scientifically
discover the possibilities of fusion power generation.
To verify that these possibilities can be realized, those
reactorsconfirmthatlargecapacityproductionoffusion
energy is actually possible through ITER. If KSTAR
develops homes, which are key technologies for fusion
power commercialization, ITER is conducting larger
▲The ITER member states collaborate to build each part of ITER. South
scale experiments so that the small houses can actually
KoreaisinvolvedinThermalShieldandVacuumVessel.
become a country called fusion power generation.
ITERismeaningfulinthatcountriesthatwereatoddsduringthedivisionofthe20thcenturyareworkingtogetherand
showinganidealinternationalsociety.
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OCTOBER 2022

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