Annual report on the characteristics of high-level waste glasses [report]

J Mendel, W Ross, F Roberts, Y Katayama, J Westsik, Jr, R Turcotte, J Wald, D Bradley
1977 unpublished
Processes a r e being developed t o immobil i z e h i g h -l e v e l r a d i o a c t i v e wastes i n glass f o r increased s a f e t y d u r i n g handling, storage and f i n a l disposal. A concurrent program i s t h e c h a r a c t e r i z a t i o n o f t h e wastec o n t a i n i n g glasses prcduced by these processes, p a r t i c u l a r l y i n re1 a t i o n t o t h e i r expected long-term behavior as a f f e c t e d by thermal and r a d i a t i o ninduced a l t e r a t i o n o f t h e
more » ... ass. A compilation o f c h a r a c t e r i z a t i o n data i s presented f o r low-melting (<llOO°C) b o r o s i l i c a t e waste glasses, which nlay c o n t a i n 33 w t % o r more waste and which can be me1 t e d -i n s i t u i n t h e i r s t a i n l e s s s t e e l storage c a n i s t e r s . The data demonstrate t h a t these low-me1 t i n g glasses a r e r e i at i v e l y unaffected by t h e r a d i a t i o n doses t o which they a r e exposed. The data a l s o show t h a t thermally-induced d e v i t r i f i c a t i o n and phase separation can be minimized by proper s e l e c t i o n o f glass composition. iii CONTENTS
doi:10.2172/7255860 fatcat:dwzgjdme5vcnhkjtkbjrrutocm