Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
; ; ;
PNC TN8410 92-234, 26 Pages, 1992/09
Low-level radioactive liquid wastes generated in the PNC Tokai Reprocessing Plant are solidified in bitumen, and solvent wastes generated in the Plant are solidified in plastics. They have been stored in the storage facility. To make sure that the stored wastes and their packages are in good condition, we evaluated the fundamental characteristics, eg, hardness, compressive strength, penetration, water content for solidified wastes, and observation thickess for packages. As a result, the characteristics of the stored wastes have not changed since they were solidified.
*; ; *; *; *; *
PNC TN8420 89-011, 137 Pages, 1989/03
In Bituminization Demonstration Facility, low-level radioactive liquid waste has been solidfying with asphalt to institution, whereas in Solvent Waste Treatment Demonstration Facility, solvent waste has been solidfying with epoxy resin or PVC (henceforth designated as plastic solidfied product). The radiochemically analytical techniques were investigated and examined in order to carry out the evaluation of those products, and decide to the plan for development of the experiment on the application of these techniques were performed. A summary of contents of practice is indicated as follows: (1)Investigation of radiochemically analytical techniqueson solidified product of radioactive wastes. (a)Methods of preliminary treatment of samples. THe methods of ashing or liquedying in solvents are effective to Inorganically and solvolysis for the samples, however as operating conditions, it is important that the operation temperature control, and prevented the scattering of ofject nuclides. (b)Method of separating and isolating of ofject nuclides. The ofject nuclides were previously classified into the groupes being similar in chemical behavior, after it was indicated that the methods for isolating and measuring each group is effective. For these techniques, it is desirable to adopt the ion exchange and extracting methods. (2)Plan for development of experiment. It was indicated that simulated Cold and Hot tests were necessary to operate in order to investigate the functions of the recovery, distribution and handling with preliminaly treatment, methods of separating and isolating in the radio chemically analytical technique.
