7-11 July 2019
EV46 - PEP 2I: Evolution of Occupational Radiological Protection (Melo)Orlando V 10:30 - 12:30 |
| Occupational radiation exposure occurs in the workplace due to exposure to sealed radiation sources (generally known external exposure) and/or exposure to unsealed radiation sources (generally known as internal exposure), that involves incorporation of radionuclides by inhalation, ingestion or skin absorption. The International Commission on Radiological Protection (ICRP) provides an appropriate standard of protection for man without unduly limiting the beneficial practices giving rise to radiation exposure. The aim of the radiological protection is to prevent detrimental deterministic effects and to limit the probability of stochastic effects to levels deemed to be acceptable. The first radiological protection recommendations were published in 1958: ICRP Publication 1, which was based on the concept of critical organs, the tissues and organs of concern were gonads, red bone marrow and lens of the eyes. In 1977, the ICRP Publication 26 replaced the previous 1958 recommendations with important updates. In this new Publication, ICRP recommends a system of dose limitations. Based on this new system, these recommendations were completely revised and again issued in 1991 as Publication 60, the dose limits were reviewed based on findings of epidemiological studies, radiation quantities were updated, and physiologically based biokinetic models were adopted as well. Most recently, the ICRP recommendations were again updated and published in 2007, with further guidance and clarifications in ICRP Publication 103. The objective of this course is to educate and inform health physicist and students about the latest concepts of radiological protection and the favourable changes and improvements over the 60 years. We will discuss the evolution of dosimetry methodologies, dose limits, occupational monitoring programs as well as a comparison the doses calculated using the different ICRP recommendations. |
