Читать книгу Management of Radioactive Waste - Jean-Claude Amiard - Страница 22
1.3.4. American classification
ОглавлениеThe American classification of radioactive waste has three classes (A, B and C) based on the maximum activity of a given radionuclide (Table 1.2).
Table 1.2. Excerpt from the US NRC classification of radioactive waste based on maximum concentrations of radionuclides and expressed in Ci.m-3 (source: [BLA 01]). MC: maximum concentration (no limit for this class)
| Radionuclide | Class A | Class B | Class C |
| 3H | 40 | MC | MC |
| 14C | 0.8 | – | 8 |
| 60Co | 700 | MC | MC |
| 90Sr | 0.04 | 150 | 7,000 |
| 99Tc | 0.3 | – | 3 |
| 129I | 0.008 | – | 0.08 |
| 137Cs | 1 | 44 | 4,600 |
| All radionuclides with half-life <5 years | 700 | MC | MC |
| α emitters with a half-life >5 years | 10 | 100 | |
| 241Pu | 350 | 3,500 | |
| 242Cm | 2,000 | 20,000 |
