RADIOACTIVE WASTE DISPOSAL IN CLAY FORMATIONS - A SYSTEMATIC APPROACH TO THE PROBLEM OF FRACTURES AND FAULTS
Clay formations are being considered in a number of European countries as possible geological disposal areas for radioactive waste. Both generic and site specific studies have been performed to investigate the suitability of this disposal option. Risk analysis studies have pointed out in particular that faulting of the formation followed by water intrusion could constitute a possible radioactivity release scenario. In this context field studies were undertaken to ascertain the existence of permeable faults in clay under natural geological conditions. Evidence of permeable fractures was found in a surface clay formation during a recent ENEA campaign in central Italy and a number of samples were taken from the fracture zone and analyzed. In the present study a descriptive statistics technique was employed to interpret the results of the above analysis. In particular principle components analysis was used to handle the geochemical data. After a short description of the data the main findings of the study are reported, focusing on the effectiveness of the various chemical analyses in revealing traces of water percolation through the faults. The problem of the fracture lifetime is also touched upon.
Bibliographic Reference: RADIOACTIVE WASTE MANAGEMENT AND THE NUCLEAR FUEL CYCLE, VOL. 6 (1985), NO. 2, PP. 101-120.
Record Number: 1989124087500 / Last updated on: 1987-01-01
Available languages: en