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

Bi-214 19.9 min ^,  / ph 2.10E-08 1.10E-10 0.239 1000 1.7 1.E+01 [1] 3.00E+05 4.00E+02 3  Po-214-> Pb-

210 Po-203 36.7 min ec, ^,  / ph 6.10E-11 5.20E-11 0.245 1000 1 1.E+01 [1] 1.00E+08 1.00E+05 10  Bi-203 [6] Po-205 1.66 h ec, ^,  / ph 8.90E-11 5.90E-11 0.233 200 0.3 1.E+01 [1] 7.00E+07 9.00E+04 30  Bi-205 [6], Pb-

201 Po-206 8.8 d ec,  / ph 1.E+00 2.00E+04 2.00E+01 3  Bi-206 [6] Po-207 5.80 h ec, ^,  / ph 1.50E-10 1.40E-10 0.201 200 0.3 1.E+01 [1] 4.00E+07 6.00E+04 30  Bi-207 [6] Po-208 2.898 a , ec 1.E+00 3.00E+03 3.00E+00 0.3  Bi-208 Po-209 102 a , ec / ph 1.E+00 3.00E+03 3.00E+00 0.3  Pb-205

Po-210 138.376 d  2.20E-06 2.40E-07 <0.001 <1 <0.1 1.E+00 3.00E+03 4.00E+001

At-207 1.80 h ec, ^,  / ph 1.90E-09 2.30E-10 0.198 500 0.5 1.E+01 [1] 3.00E+06 4.00E+03 10  Po-207 [6], Bi-

203 At-211 7.214 h ec,  / ph 1.10E-07 1.10E-08 0.008 3 <0.1 1.E+03 [2] 5.00E+04 8.00E+01 30  Po-211, Bi-207

[6] Rn-220 55.6 s  / ph <0.001 <1 <0.1 1.E+04 [1] ???.  Po-216-> Pb-

212 Rn-222 3.8235 d  / ph <0.001 <1 <0.1 1.E+01 [2] ???.  Po-218-> Pb-

214 Fr-222 14.2 min ^/ ph 2.10E-08 7.10E-10 0.001 1000 1.6 1.E+03 [2] 3.00E+05 4.00E+02 3  Ra-222 etc. Fr-223 22.00 min ^,  / ph 1.30E-09 2.30E-09 0.017 2000 1.8 1.E+02 [1] 5.00E+06 6.00E+03 3  Ra-223 Ra-223 11.43 d  / ph 5.70E-06 1.00E-07 0.024 600 0.5 1.E+01 [2] 1.00E+03 1.00E+00 3  Rn-219 Po-

215 Pb-211 Ra-224 3.66 d  / ph 2.40E-06 6.50E-08 0.002 30 <0.1 1.E+00 [2] 3.00E+03 3.00E+00 3  Rn-220 etc. Ra-225 14.9 d ^/ ph 4.80E-06 9.50E-08 0.007 1000 0.9 1.E+01 1.00E+03 2.00E+00 3  Ac-225 Ra-226 1600 a  / ph 2.20E-06 2.80E-07 0.001 50 <0.1 1.E-02 [2] 3.00E+03 4.00E+00 1  Rn-222

Ra-226 (+ filles) 0.283 5000 5.2 1.E-02 3.00E+03 4.00E+001

Ra-227 42.2 min ^/ ph 2.10E-10 8.40E-11 0.038 2000 1.8 1.E+02 [1] 3.00E+07 4.00E+04 3  Ac-227 Ra-228 5.75 a ^/ ph 1.70E-06 6.70E-07 <0.001 <1 <0.1 1.E-01 [2] 4.00E+03 5.00E+00 0.3  Ac-228 Ac-224 2.78 h ec,  / ph 9.90E-08 7.00E-10 0.038 100 0.2 1.E+02 [1] 6.00E+04 8.00E+01 30  Ra-224, Fr-220

etc.