SAFETY. An analysis of the phenomenology of the earthquake and tsunami-induced station blackout accident at the Fukushima Daiichi plant, Japan and its consequences, is attempted. Substantial fuel damage and partial core meltdowns are surmised to have occurred in units 1, 2 and 3 with flooding in the reactors basements from suspected leaks in the piping to the containment vessels. Core uncovery occurred in unit 1 at 5 hours after the combined earthquake-tsunami event with the fuel temperature reaching 2,800 oC at 6 hours into the event.Partial core damage of unit 1 with the formation of a debris bed at the bottom of the core occurred at 16 hours into the accident with its reactor building’s basement flooded under 4.2 m of water. The pressure vessels of units 2 and 3 are likely to be damaged and leaking water from their bottoms. Units 4-6 were not operational and were shut-down for maintenance.
By DR. MAGDI RAGHEB
SAFETY. This study examines the level of compliance by swimming-pool construction and reform projects...
By JOAQUÍN GÁMEZ DE LA HOZ.,ANA PADILLA FORTES.
ENVIRONMENT. Every day coastal fishing and yachting activities generate thousands of tons of waste ...
By YOLANDA LISTA PERISCAL.