Development of Advanced Nuclear Reactors Worldwide

Several small and medium sized water cooled designs are of the integral type with the steam generator, pressurizer and, in some cases, control rod drives housed in the same vessel as the reactor core to eliminate primary system piping, minimizing the scope of possible loss of coolant accidents (LOCA) and reactivity initiated accidents (RlA), The Argentinian CAREM (from Spanish: Central ARgenttna de Elementos Modulares) reactor is cooled by natural circulation. and has passive safety systems.