Projets

Grandeurs Limite de libéra- Limite d’autori-Valeurs directrices

d’appréciation tion sation

Nucléide Période Mode de désinté-einh eing h10 h0,07 hc0,07 LL LA CA CS Nucléide de

gration / rayon- Sv/Bq Sv/Bq (mSv/h)/G (mSv/h)/GBq à (mSv/h)/ Bq/g Bq Bq/m3 Bq/cm2 filiation instable nement Bq à 1 m 10 cm de (kBq/cm2)

de distance distance 1 2  4 5 6 7 8 9 10 11 1213

Hf-175 70 d ec / ph 8.80E-10 4.10E-10 0.065 200 0.2 1.E+00 7.00E+06 9.00E+0330

Hf-177m 51.4 min it / ph 1.50E-10 8.10E-11 0.370 4000 4.5 1.E+01 [1] 4.00E+07 6.00E+041

Hf-178m 31 a it / ph 3.10E-07 4.70E-09 0.378 2000 2.1 1.E+01 [1] 2.00E+04 3.00E+013

Hf-179m 25.05 d it / ph 3.20E-09 1.20E-09 0.149 1000 1.6 1.E+01 [1] 2.00E+06 3.00E+033

Hf-180m 5.5 h it,  / ph 2.00E-10 1.70E-10 0.166 700 1.1 1.E+01 [1] 3.00E+07 4.00E+043

Hf-181 42.39 d / ph 4.10E-09 1.10E-09 0.089 2000 1.9 1.E+00 1.00E+06 2.00E+033

Hf-182 9E6 a ^/ ph 3.60E-07 3.00E-09 0.039 500 0.6 1.E-01 [2] 2.00E+04 2.00E+01 10  Ta-182 [6] Hf-182m 61.5 min ^, it / ph 7.10E-11 4.20E-11 0.150 1000 1.8 1.E+01 [1] 8.00E+07 1.00E+05 3  Ta-182 [6], Hf-

182 Hf-183 1.067 h ^/ ph 8.30E-11 7.30E-11 0.116 1000 1.6 1.E+01 [1] 7.00E+07 1.00E+05 3  Ta-183 Hf-184 4.12 h ^/ ph 4.50E-10 5.20E-10 0.043 2000 2.2 1.E+02 [1] 1.00E+07 2.00E+04 3  Ta-184 Ta-172 36.8 min ec, ^/ ph 5.70E-11 5.30E-11 0.244 700 1.5 1.E+01 [1] 1.00E+08 1.00E+05 3  Hf-172 [6]

Ta-173 3.14 h ec,  / ph 1.60E-10 1.90E-10 0.098 500 0.7 1.E+01 [1] 4.00E+07 5.00E+04 10  Hf-173 Ta-174 1.14 h ec,  / ph 6.60E-11 5.70E-11 0.106 700 1.2 1.E+01 [1] 9.00E+07 1.00E+05 3  Hf-174 Ta-175 10.5 h ec,  / ph 2.00E-10 2.10E-10 0.137 200 0.3 1.E+01 [1] 3.00E+07 4.00E+04 30  Hf-175 Ta-176 8.09 h ec,  / ph 3.30E-10 3.10E-10 0.280 100 0.5 1.E+01 2.00E+07 3.00E+0410

Ta-177 56.56 h ec / ph 1.30E-10 1.10E-10 0.015 100 0.2 1.E+02 [1] 5.00E+07 6.00E+0430

Ta-178 9.31 min ec,  / ph 0.021 10 0.2 1.E+01 [1]30

Ta-178m 2.36 h ec / ph 1.10E-10 7.80E-11 0.172 700 1.2 5.00E+07 8.00E+043

Ta-179 1.82 a ec / ph 2.90E-10 6.50E-11 0.008 6 <0.1 1.E+01 2.00E+07 3.00E+041000

Ta-180 8.152 h ec,  / ph 6.20E-11 5.40E-11 0.011 200 0.4 1.E+01 [1] 1.00E+08 1.00E+0510

Ta-180m 1E13 a 1.40E-08 8.40E-10 0.094 600 1 1.E+03 4.00E+05 6.00E+0210

Ta-182 114.43 d  / ph 7.40E-09 1.50E-09 0.194 1000 1.8 1.E-01 8.00E+05 1.00E+033

Ta-182m 15.84 min it / ph 3.60E-11 1.20E-11 0.044 3000 2.7 1.E+02 [1] 2.00E+08 2.00E+05 3  Ta-182 [6]

Ta-183 5.1 d  / ph 2.00E-09 1.30E-09 0.051 2000 2.3 1.E+01 3.00E+06 4.00E+033

Ta-184 8.7 h  / ph 6.30E-10 6.80E-10 0.247 2000 2.8 1.E+01 [1] 1.00E+07 1.00E+043

Ta-185 49.4 min  / ph 7.20E-11 6.80E-11 0.033 2000 2.3 1.E+02 [1] 8.00E+07 1.00E+05 3  W-185 Ta-186 10.5 min  / ph 3.10E-11 3.30E-11 0.252 2000 2.5 1.E+01 [1] 2.00E+08 3.00E+053

W-176 2.3h 7.60E-11 1.10E-10 0.036 20 0.1 1.E+02 [1] 8.00E+07 1.00E+05 100  Ta-176 [6]