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

  Po-207 [6], Bi- 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 10203

 Po-211, Bi-207 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 [6]

 Po-216-> Pb-

Rn-220 55.6 s  / ph <0.001 <1 <0.1 1.E+04 [1]212

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

 Rn-219 Po-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 3 215 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 (+ figli) 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

 Ra-224, Fr-220 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 etc. Ac-225 10.0 d  / ph 6.50E-06 2.40E-08 0.005 20 0.1 1.E+01 [2] 9.00E+02 1.00E+00 10  Fr-221 etc.

 Th-226, Ra-226, Ac-226 29.37 h ^, ec,  / ph 1.00E-06 1.00E-08 0.024 1000 1.3 1.E+02 [2] 6.00E+03 8.00E+00 3 Fr-222 Ac-227 21.772 a ^,  / ph 6.30E-04 1.10E-06 <0.001 <1 <0.1 1.E-02 [2] 1.00E+01 1.00E-02 0.1  Th-227, Fr-223 Ac-228 6.15 h ^/ ph 2.90E-08 4.30E-10 0.145 2000 1.8 1.E+01 [1] 2.00E+05 3.00E+02 3  Th-228 Th-226 30.57 min  / ph 7.80E-08 3.60E-10 0.002 100 0.3 1.E+03 [1] 8.00E+04 1.00E+02 30  Ra-222 etc. Th-227 18.68 d  / ph 7.60E-06 8.90E-09 0.023 200 0.2 1.E+01 8.00E+02 1.00E+00 10  Ra-223 Th-228 1.9116 a  / ph 3.20E-05 7.00E-08 0.002 3 <0.1 1.E-01 [2] 2.00E+02 3.00E-01 3  Ra-224 Th-229 7.34 E3 a  / ph 6.90E-05 4.80E-07 0.027 300 0.5 1.E-01 [2] 9.00E+01 1.00E-01 0.3  Ra-225