Safety Evaluation Of Indian Nuclear Power Plants Post Fukushima Incident

Shutdown systems in Indian PHWRs There are two fast acting, independent shutdown systems known as Primary Shutdown System (PSS) and Secondary Shutdown System (SSS). SHIELDING PLUC ELEMENT DRIVE UNIT CALANDRIA VAULT FAST ACTING SOLENOID VALVES HELIUM TANK TOP HATCH BEAM GUIDE TUBE POISON TANK CALANDRIA NOZZLE CALANDRIA GUIDE TUBE LOCATOR ASSEMBLY LLITHUM PENTABORAN SOLUTION FIG. 10.3.4 SHUT-OFF ROD MECHANISM GENERAL ARRANGEMENT (500 MWe) SCHEMATIC OF PSS ROD FIG. 10.3.5: LIQUID SHUT-OFF SYSTEM (220 MWe) SCHEMATIC OF SSS LIQUID POISON TUBE

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