Avamprogetti

Grandezze di apprezzamento Livello di Livello di licenza Vincoli

esenzione

Radionuclide Tempo di Tipo di decadi- einh eing h10 h0,07 hc0,07 LL LA CA CS Nuclide figlio instabile

dimezzamento mento e di Sv/Bq Sv/Bq (mSv/h)/ (mSv/h)/GBq (mSv/h)/ Bq/g Bq Bq/m3 Bq/cm2

radiazione GBq a 1 m a 10 cm di (kBq/cm2)

di distanza distanza

1 2  4 5 6 7 8 9 10 11 1213



Th-230 7.538 E4 a  / ph 2.80E-05 2.10E-07 0.001 3 <0.1 1.E-01 2.00E+02 3.00E-01 1  Ra-226 Th-231 25.52 h ^/ ph 4.00E-10 3.40E-10 0.019 700 0.8 1.E+03 2.00E+07 2.00E+04 10  Pa-231 Th-232 1.405 E10 a  / ph 2.90E-05 2.20E-07 0.001 3 <0.1 1.E-01 [2] 2.00E+02 3.00E-01 1  Ra-228 Th-234 / Pa-234m 24.10 d ^/ ph 5.80E-09 3.40E-09 0.008 1000 1.9 1.E+02 [2] 1.00E+06 1.00E+03 3  Pa-234

vedi

Th nat (+ figli) 0.355 6000 5.4 Allegato 21

Pa-227 38.3 min , ec / ph 9.70E-08 4.50E-10 0.007 5 <0.1 1.E+01 [1] 6.00E+04 9.00E+01 300  Ac-223 Pa-228 22 h ec, ^,  / ph 5.10E-08 7.80E-10 0.168 400 0.9 1.E+01 1.00E+05 2.00E+02 10  Th-228, Ac-224

 Th-230, U-230, Pa-230 17.4 d ec, ^,  / ph 5.70E-07 9.20E-10 0.108 200 0.3 1.E+01 1.00E+04 1.00E+01 30 Ac-226 Pa-231 3.276 E4 a  / ph 8.90E-05 7.10E-07 0.020 40 0.1 1.E-02 7.00E+01 9.00E-02 0.3  Ac-227 Pa-232 1.31 d ^, ec / ph 6.80E-09 7.20E-10 0.151 1000 1.3 1.E+01 9.00E+05 1.00E+03 3  U-232 Pa-233 26.967 d ^/ ph 3.20E-09 8.70E-10 0.041 2000 1.4 1.E+01 2.00E+06 3.00E+03 3  U-233 Pa-234 6.70 h ^/ ph 5.80E-10 5.10E-10 0.281 2000 2.9 1.E+01 1.00E+07 1.00E+04 3  U-234 U-230 20.8 d  / ph 1.20E-05 5.50E-08 0.003 6 <0.1 1.E+01 [2] 5.00E+02 7.00E-01 3  Th-226 U-231 4.2 d ec,  / ph 4.00E-10 2.80E-10 0.032 10 0.1 1.E+02 2.00E+07 2.00E+04 100  Pa-231, Th-227 U-232 68.9 a  / ph 2.60E-05 3.30E-07 0.002 6 <0.1 1.E-01 [2] 2.00E+02 3.00E-01 1  Th-228 U-233 1.592 E5 a  / ph 6.90E-06 5.00E-08 0.001 2 <0.1 1.E+00 9.00E+02 1.00E+00 3  Th-229 U-234 2.455 E5 a  / ph 6.80E-06 4.90E-08 0.002 3 <0.1 1.E+00 9.00E+02 1.00E+00 3  Th-230 U-235 7.04 E8 a  / ph 6.10E-06 4.60E-08 0.028 100 0.2 1.E+00 [2] 1.00E+03 1.00E+00 3  Th-231 U-236 2.342E7 a  / ph 6.30E-06 4.60E-08 0.002 1 <0.1 1.E+01 [1] 1.00E+03 1.00E+00 3  Th-232 U-237 6.75 d ^/ ph 1.70E-09 7.70E-10 0.037 1000 1.6 1.E+02 4.00E+06 5.00E+03 3  Np-237 U-238 4.468 E9 a , fs / ph 5.70E-06 4.40E-08 0.002 1 <0.1 1.E+00 [2] 1.00E+03 1.00E+00 10  Th-234 U-239 23.45 min ^/ ph 3.50E-11 2.80E-11 0.012 1000 1.6 1.E+02 [1] 2.00E+08 2.00E+05 3  Np-239 U-240 14.1 h ^/ ph 8.40E-10 1.10E-09 0.009 1000 1 1.E+02 [2] 7.00E+06 1.00E+04 10  Np-240

vedi

U nat (+ figli) 0.296 6000 7.1 Allegato 21

Np-232 14.7 min ec, ^/ ph 3.50E-11 9.70E-12 0.199 400 0.6 1.E+01 [1] 2.00E+08 2.00E+05 10  U-232 Np-233 36.2 min ec,  / ph 3.00E-12 2.20E-12 0.022 40 <0.1 1.E+02 [1] 2.00E+09 3.00E+06 1000  U-233