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==Energy safety and security==
EM2 utilizes passively safety systems designed to safely shutdown using only gravity and natural convection in emergency conditions.<ref>http://www.andrew.cmu.edu/user/ayabdull/Prasad_SMRDesc.pdf</ref> Control rods and drums are automatically inserted during a loss of power incident via gravity. Natural convection flow is used to cool the core during whole site loss of power incidents. No external water supply is necessary for emergency cooling. The use of silicon carbide as a safety-enhanced fuel cladding in the core ensures no hydrogen production during accident scenarios and allows an extended period of response when compared to the use of Zircaloy metal cladding in current reactors, which are reactive and not as heat resistant as the ceramics in EM2.
Underground siting in a silo improves safety and security of the plant to terrorism and other threats.
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