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It is created inside the fuel when uranium splits, and in case of a nuclear accident, iodine together with noble gases, such as xenon and krypton may be dispersed into the atmosphere by wind until humans are exposed. Iodine is more dangerous than xenon and krypton, because it can be absorbed inside of your body when you breathe. In many commercial reactors today, a special iodine filtration building has to be installed to avoid dispersion of iodine into the atmosphere after a severe accident.",[],{"_key":316,"_type":96,"children":317,"markDefs":322,"style":104},"1270a43cf745",[318],{"_key":319,"_type":100,"marks":320,"text":321},"3024f1ab15f2",[],"In SEALER reactors, iodine released from a broken fuel rod chemically binds to lead and forms lead iodide. The iodine stops being a gas the moment it touches the coolant. This means that the coolant itself plays a role in confining radioactive material. In case of an accident, the lead coolant would act as a filter against the release of radioactive iodine into the air.",[],{"_key":324,"buttonLabel":325,"description":326,"popin":343},"f8821bc9e19b","High Buoyancy",[327,335],{"_key":328,"_type":96,"children":329,"markDefs":334,"style":104},"ae05b66dd867",[330],{"_key":331,"_type":100,"marks":332,"text":333},"a3842e98257a",[],"High Buoyancy ",[],{"_key":336,"_type":96,"children":337,"markDefs":342,"style":104},"a3ec40373ae9",[338],{"_key":339,"_type":100,"marks":340,"text":341},"451600f8a1fa",[],"Removing residual heat without the need for pumps.",[],{"body":344,"headline1":208,"headline2":209,"title":325},[345,353],{"_key":346,"_type":96,"children":347,"markDefs":352,"style":104},"9be8ed1aaebf",[348],{"_key":349,"_type":100,"marks":350,"text":351},"23307a4a44f0",[],"Heated lead moves by itself. Hot lead expands, becomes lighter and rises. Cooler lead sinks to take its place. The driving force is the density difference between the column going up and the column coming down. The difference in density between hot and cold lead during an accident may be as high as 400 kilograms per cubic meter, which is enough to drive the coolant flow to transport the heat of the fuel to a heat sink, such as the vessel wall.",[],{"_key":354,"_type":96,"children":355,"markDefs":360,"style":104},"8246c604a39f",[356],{"_key":357,"_type":100,"marks":358,"text":359},"0fb4779f4e8a",[],"This means the SEALER removes its residual heat with gravity, leading to true passive safety.",[],"Harnessing the Natural",{"_key":363,"_type":364,"buttonLabel":365,"buttonStyle":366,"contentPosition":367,"description":368,"imageDesktop":369,"imageMobile":374,"mediaType":370,"overlay":82,"popinBody":383,"popinBodyDark":392,"popinHeadline1":393,"popinHeadline2":394,"popinTitle":395,"subtitle":396,"textTheme":397,"title":398,"videoDesktop":79,"videoMobile":79},"285601224818","showcaseSection","Read more","glass","bottom","The SEALER will use uranium dioxide (UO2) fuel, fabricated at industrial scale, proven across decades of reactor operation.",{"_type":370,"asset":371},"image",{"_ref":372,"_type":373},"image-729fd0beee27b347f984c5c926a5cf3be97796ad-2400x1600-jpg","reference",{"_type":370,"asset":375,"crop":376,"hotspot":379},{"_ref":372,"_type":373},{"_type":377,"bottom":378,"left":378,"right":378,"top":378},"sanity.imageCrop",0,{"_type":380,"height":381,"width":381,"x":382,"y":382},"sanity.imageHotspot",1,0.5,[384],{"_key":385,"_type":96,"children":386,"markDefs":391,"style":104},"9aa3c51e1dae",[387],{"_key":388,"_type":100,"marks":389,"text":390},"3e664b1b67ba",[],"The SEALER will initially use uranium dioxide (UO2), proven across decades of reactor operation and that builds upon industrially proven and established routes for fabrication and frameworks for transportation and reprocessing. 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Kanthal has made iron-chromium-aluminum alloys for over a century. Now they are taking that alloy family into advanced nuclear for the first time.","Kanthal",{"_type":370,"asset":441},{"_ref":442,"_type":373},"image-6c9d3795934af06553b0ca788f20a1de9c007f05-3500x2334-jpg","World-Leading Steel Producer",{"_key":445,"description":446,"name":447,"photo":448,"role":451},"3ce75882deb3","Our alloys are printed into the pumps that circulate lead through the reactor, among the most demanding components in the plant. KSB is one of the world's leading pump manufacturers. Now they are taking additive manufacturing into pumps designed for molten lead.","KSB",{"_type":370,"asset":449},{"_ref":450,"_type":373},"image-1b8ba9bfa8c3c6622edaa7c569f0e9ada3369c5e-2134x1200-webp","World-Leading Pump Developer",{"_key":453,"description":454,"name":455,"photo":456,"role":459},"f6e608ccc08c","Höganäs turns our alloys into powder fine enough to print and spray onto the surfaces that meet lead. 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