Loading patent…
AssigneeCommissariat a l'Energie Atomique
InventorsJoelle Carpena, Fabienne Audubert, Jean-Louis Lacout
Estimating the term…
The invention relates to the conditioning or packaging of radioactive iodine, particularly iodine 129, using an apatite as the confinement matrix. Having the iodine, said apatite corresponds to the formula: M.sub.10 (XO.sub.4).sub.6-6x (PO.sub.4).sub.6x I.sub.2 (I) in which M represents Cd or Pb, X represents V or As, I is the radioactive iodine to be conditioned and x is such that 0.ltoreq.x<1. This iodoapatite (1) can be surrounded by an apatite (3) not containing iodine serving as a physical barrier. The iodoapatite can be obtained from a solid compound of the iodine, e.g. an iodide such as silver iodide or lead iodide, by reaction with a compound of formula: M.sub.3 (XO.sub.4).sub.2-2x (PO.sub.4).sub.2x (II) or M.sub.10 (XO.sub.4).sub.6-6x (PO.sub.4).sub.6x Y.sub.2 (III) in which M, X and x are as defined hereinbefore and Y can represent OH, F, Cl or O.sub.1/2.
Block for conditioning radioactive iodine, characterized in that it comprises an iodoapatite of formula:
Block for conditioning radioactive iodine in the form of a solid, iodine-containing compound, characterized in that it comprises a core formed by said iodine-containing compound, surrounded by a first compacted powder layer of a compound complying with one of the formulas:
Block for conditioning radioactive iodine in the form of a solid, iodine-containing compound, characterized in that it comprises granules of said iodine-containing compound covered with a layer of a compound complying with one of the formulas:
Process for the conditioning of the radioactive iodine present in the form of a solid, iodine-containing compound, characterized in that it consists of reacting the iodine-containing compound with a solid compound of formula:
Dependencies are inferred from the claim text.