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Cm-244<br />
18.1 a<br />
Ra-224<br />
3.64 d<br />
Cm-242<br />
162 d<br />
Cm-246<br />
4730 a<br />
Rn-222<br />
3.8 d<br />
Pu-240<br />
6550 a<br />
Rn-220<br />
55 s<br />
Pu-238<br />
87.7 a<br />
Pu-242<br />
376 000 a<br />
Po-218<br />
3 m<br />
U-236<br />
23.4 Ma<br />
Po-216<br />
0.15 s<br />
U-238<br />
4.45 Ba<br />
Pb-214<br />
26 m<br />
Bi-214<br />
19.8 m<br />
Po-214<br />
0.16 s<br />
Th-232<br />
14 Ba<br />
Pb-212<br />
10.6 h<br />
Bi-212<br />
60.6 m<br />
Pa-234<br />
8.7 h<br />
Th-234<br />
24.1 d<br />
Po-210<br />
138 d<br />
Bi-210<br />
5 d<br />
Pb-210<br />
22 a<br />
Ra-228<br />
5.7 a<br />
Po-212<br />
0.3 ms<br />
TI-208<br />
3.1 m<br />
U-234<br />
244 000 a<br />
Hg-206<br />
8.1 m<br />
TI-206<br />
4.3 m<br />
Ac-228<br />
6.13 h<br />
Pb-208<br />
stable<br />
Th-230<br />
75 400 a<br />
Pb-206<br />
Stable<br />
Th-228<br />
1.9 a<br />
Ra-226<br />
1600 a<br />
4n decay series Stable Beta Alpha<br />
4n + 2 decay series<br />
FIG. 4. The 4n and 4n + 2 decay series.<br />
(a)<br />
(b)<br />
(c)<br />
(d)<br />
(e)<br />
An additional facility for the separation of MAs from high active<br />
raffinate (HAR) can be attached to an existing reprocessing plant.<br />
The separated MAs can be stored together with separated plutonium in<br />
existing storage facilities.<br />
The secondary waste resulting from the partitioning processes can be<br />
treated in the same facility in which low and intermediate level waste<br />
(LILW) is treated and conditioned.<br />
Iodine isolated from the dissolver off-gases can be conditioned and stored<br />
instead of discharged into the sea.<br />
New fuel fabrication plants with g–n shielding will have to be erected<br />
when recycling in the fuel cycle is started.<br />
15
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