Facility damages by the fire and explosion incident (2)

not registered; not registered ; Omori, Eiichi

This report describes the observation results of facility damages caused by the fire and explosion that occurred in March 11, 1997 at Bituminization Development Facility of Tokai Reprocessing Plant, JNC. Following to the recently published report ; "Facility damages by the explosion" PNC TN8410 98-013, this report focused on the other red cells than the filling room (R152) and extruder room (R151), and detail of the extruder and inside the filling room that can be observed in accordance with the facility clearing after September 1997. There were little damage in the other cells except the filling room and extruder room, those were only covered with the soot that may be transfered through the ventiration ducts. There was no damage in the body of the extruder except some damages on the discharge nozzle that may be caused by the blown off shielding panel. The detailed damages were also observed inside the filling room. Also the explosion pressure was estimated through the measurement of compressed drum, the results was almost same as the recent estimation.