"Contribuição ao cálculo do valor alfa no estudo de otimização da radioproteção" / CONTRIBUTION TO THE CALCULATION OF THE ALPHA VALUE IN THE STUDY OF OPTIMIZATION ON RADIOLOGICAL PROTECTION
AUTOR(ES)
Clarice de Freitas Acosta Perez
DATA DE PUBLICAÇÃO
2007
RESUMO
The Alpha value is an extremely important criterion because it determines the time that each country takes to reach its proposals to decrease the doses to workers involved with ionizing radiation sources. Presently, countries adopt a single value for alpha based in the annual gross national product, GNP, per capita. The aim of this paper is to show that it should be more efficient the selection of a curve for alpha in place of a single value. This curve, in its turn, should allow an alpha value that would be constraint to the greatest individual doses present in each optimization process, applied to design and operation. These maximum individual doses should represent the dose distribution between the workers team. To build the curve, alpha values suggested will not be based on the GNP per capita but on a distribution function of the maximum individual doses and on the time necessary to reach the goal of 1/10 of the annual dose limit, that is, to reach the region where the individual doses are considered acceptable. This new alpha value approach solves several problems risen by the present methodology, among which we emphasize: a) It can be accomplished only one optimization for each radiological protection option set; b) each country may have different constraints limits that can create serious problems in the international interchange; c) it avoids the possibility to calculate the probable death rate due to the collective dose. This type of calculation is undesirable to international organization.
ASSUNTO(S)
otimização otimização valor alfa proteção radiológica proteção radiológica valor alfa
Documentos Relacionados
- A contribution to the study about multicriterion optimization methods
- CONTRIBUIÇÃO AO ESTUDO DO ESPALHAMENTO POR CHUVAS
- Contribuição da fração volátil no valor nutricional de silagens
- CONTRIBUIÇÃO AO ESTUDO DOS CONJUNTOS CIRCULARES
- "Contribuição ao imunodiagnóstico da leptospirose humana: ênfase ao uso de anticorpos monoclonais"