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Abstract

In work being undertaken at the Joint Research Centre, Ispra, on the feasibility of disposing of nuclear wastes in deep ocean geological formations, an experimental set-up is being developed to simulate ambient conditions. It is becoming evident that careful consideration must be given to the effect of pressure, temperature and redox conditions in the sediments under study. This paper briefly discusses the potential importance of these parameters and the specialized facilities required to study the processes governing the migration and diffusion of physicochemical forms of selected nuclides in both oxidizing and reducing deep ocean sediments in order to realistically assess their long-term mobility and fate. In view of the need to study both the near and far fields, it is necessary to consider temperature variations around the borosilicate glass source term between 2 and 300 degrees C at pressures of up to 1000 atmospheres. Due to the potential importance of simulating conditions in reducing sediments, special attention is also being given to the control of Eh conditions through the use of oxygen depleted atmospheres and redox electrolytic techniques.

Additional information

Authors: MURRAY C N, JRC ISPRA ESTAB. (ITALY);STANNERS D A, JRC ISPRA ESTAB. (ITALY);AVOGADRO A JRC ISPRA ESTAB. (ITALY), JRC ISPRA ESTAB. (ITALY)
Bibliographic Reference: INTERNATIONAL SYMPOSIUM ON THE BEHAVIOUR OF LONG-LIVED RADIONUCLIDES IN THE MARINE ENVIRONMENT, LA SPEZIA (ITALY), SEPT. 28-30, 1983 WRITE TO CEC LUXEMBOURG, DG XIII/A2, POB 1907 MENTIONING PAPER E 31217 ORA
Availability: Can be ordered online
Record Number: 1989124002200 / Last updated on: 1987-01-01
Category: PUBLICATION
Available languages: en