epr-method (2003) - IAEA Publications - International Atomic Energy ...

Sources and material 105
Radionuclide D 1
106
D 2
107
Ru-106 (Rh-106) 112 3.E-01 1.E+01
Pd-103 (Rh-103m) 112 9.E+01 1.E+02
Cd-109 2.E+01 3.E+01
Te-132 (I-132) 112 3.E-02 8.E-01 113
I-125 1.E+01 2.E-01
I-129 UL UL 110
I-131 2.E-01 2.E-01 113
Cs-134 4.E-02 3.E+01
Cs-137 (Ba-137m) 112 1.E-01 2.E+01
Ba-133 2.E-01 7.E+01
Ce-141 1.E+00 2.E+01
Ce-144
(Pr-144m, Pr-144) 112 9.E-01 9.E+00
Pm-147 8.E+03 4.E+01
Eu-152 6.E-02 3.E+01
Eu-154 6.E-02 2.E+01
Gd-153 1.E+00 8.E+01
Tm-170 2.E+01 2.E+01
Yb-169 3.E-01 3.E+01
Re-188 1.E+00 3.E+01
Ir-192 8.E-02 2.E+01
Au-198 2.E-01 3.E+01
Hg-203 3.E-01 2.E+00
Tl-204 7.E+01 2.E+01
Po-210 8.E+03 6.E-02
Ra-226 (progeny) 112 4.E-02 7.E-02
Th-230 9.E+02 7.E-02 110
Th-232 UL 108 UL
108, 110
U-232 7.E-02 6.E-02 110
U-235 (Th-231) 112 8.E-05 114 8E-05 114
U-238 UL 108 UL
U Natural UL 108 UL
U Depleted UL 108 UL
108, 110
108, 110
108, 110
U Enriched > 20 % 8E-05 114 8E-05 114
U Enriched > 10 % 8E-04 114 8E-04 114
Np-237 (Pa-233) 112 3.E-01 115 7.E-02
Pu-238 3.E+02 114 6.E-02
Pu-239 1.E+00 114 6.E-02
Pu-239/Be 116 1.E+00 114 6.E-02
Pu-240 4.E+00 114 6.E-02
Pu-241 (Am-241) 112 2.E+03 114 3.E+00
Pu-242 7.E-02 114 7.E-02 110
Am-241 8.E+00 , 6.E-02
114 There is no immediate radiation hazard from this material; the D value is established at a level that places them in
“Nuclear Material Category II” according to Ref.[45] (10 kg for 10 % U-235; 1 kg for 20% U-235, or 0.5 kg for Pu). These
amounts are about one tenth of the amount at which there is a criticality threat. They warrant an immediate response to
promptly regain control of lost or stolen material. These and lesser amounts should be physically protected in accordance
with Ref. [45].
115 The D value represents a radiological and criticality hazard and is set at one half of the critical mass limit in Refs [43, 44].
116 Neutron generator.
183