Radioisotope plutonium-239
The radionuclide plutonium-239 is produced in reactors operating on natural uranium-238. It decays by emitting alpha particles with an energy of 5.14 MeV. The half-life is 24,065 years. It belongs to group B of radiation hazard. It accumulates in bones, lungs, the gastrointestinal tract (GIT), and the lower parts of the large intestine (LIT). The permissible volumetric activity DOA in atmospheric air is 2.9 - 3 Bq/m³ (7.84 - 17 Ki/l), and the permissible specific activity DOA in water is 5.0 Bq/kg (1.35 - 10 Ki/kg).
Source: "RULES FOR ENSURING SANITARY AND HYGIENIC REGIMES DURING CONSTRUCTION AND OPERATION OF ENERGY OBJECTS IN CONDITIONS OF RADIOACTIVE CONTAMINATION OF THE TERRAIN"
(approved by the Ministry of Energy of Russia on 20.11.96)
Понятие «радионуклид плутоний-239» мужского рода.
| Падеж | Единственное число | Множественное число |
|---|---|---|
| Р | радионуклида плутоний-239 | радионуклидов плутоний-239 |
| Д | радионуклиду плутоний-239 | радионуклидам плутоний-239 |
| В | радионуклид плутоний-239 | радионуклиды плутоний-239 |
| Т | радионуклидом плутоний-239 | радионуклидами плутоний-239 |
| П | радионуклиде плутоний-239 | радионуклидах плутоний-239 |