Today most people are aware of the important contribution nuclear energy makes in cleanly providing a significant proportion of the world's electricity.Isotopes are different forms of an atom of the same chemical element.The loss (or gain) of an electron is called ionization and a charged atom (or molecule) is called an ion.
The objectives of that system with respect to radiation exposure are twofold: to prevent the occurrence of deterministic effects, and to reduce the incidence of stochastic effects.
Sharing these same goals, the International Atomic Energy Agency (IAEA) revised and updated its guidance documents that not only reflect the 1990 recommendations of the ICRP, but also aim to lower ionizing radiation risks while not limiting the beneficial uses of ionizing radiation.
The ICRP and IAEA publications are influential internationally and are used by a large number of countries to develop national regulations for radiation protection and safety.
Guidelines for ionizing radiation protection have been in existence for more than 60 years and have been subject to numerous revisions in that time.
One authoritative international standard-setting organization is the International Commission on Radiological Protection (ICRP).