The Development of a ‘Large liner’ For the Processing and Solidification Of Intermediate Level Wastes

Abstract

Magnox Electric have developed a ‘Large Liner’ for the processing and solidification of the majority of the slurry form intermediate level wastes which arise on its power station sites (operational or undergoing decommissioning). The Liner comprises a cylindrical vessel of approximate dimensions 1.7 m diameter by 1.2 m high and it has been developed to comply with the requirements of the current Nirex Package Specifications. It is manufactured from stainless steel, being of all welded construction, with a bolted lid, incorporating an ‘O’ ring elastomer seal. The Liner can be fitted with a paddle for the ‘in drum’ solidification of slurry from wastes. This paper describes the development of the Liner, outlining the main stages from initial concepts to the final testing and receipt of approval from Nirex, who have adopted the Liner as one of its ‘Standard’ waste containers.