Development of High-Level Liquid Waste Solidification in PNC

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岡本 弘信*; 山本 正男; 永木 裕

not registered; not registered; Nagaki, Hiroshi

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R&D activities on the solidificationof HLLW and related technologies arebeing performed with the aim of designingand constructing the HLLWSolidification Pilot Plant at Tokai whichis planned to start operations in 1987. Solidified waste forms and compositionshave been studied with the aid of characte-rizing solidified products and evaluatingsolidification technologies, and twotypical series of borosilicate glass produ-cts have been found to be feasible for thesolidification of HLLW generated by theTokai Reprocessing Plant. The HLLW Engineering Test Facility (FTF) with denitration and concentrationequipment, two different types of Joule-heated ceramic melters, offgas treatmentequipment and a canister handling system,has been in opcration since February 1980in order to obtain various kinds of engin-eering data and perspectives. Air-coolinglests are also in progress to charaterizenatural or forced convection heat transferin the storage of the HLLW solidifiedwaste.