This publication is no longer validPlease see http://www-ns.iaea.org/standards/S A F E T Y S E R I E S N o . 3 S - S 2SAFETY STANDARDSCode on the Safety ofNuclear ResearchReactors:OperationA P U B L I C A T I O N W IT H IN T H ER E S E A R C H R E A C T O R S A F E T Y P R O G R A M M EINTERNATIONAL ATOMIC ENERGY AGENCY, VIENNA, 1992