Cálculo de blindaje para la sala de rayos x del equipo de radiología digital ECORAY del Hospital IESS Riobamba.

Abstract

The basic fundamentals of radiation physics, existing protocols and knowledge of the structure of an X-ray, allowed for a proper calculation of shielding for digital radiology equipment EcoRay hospital IESS Riobamba, in terms of complying with the parameters laid down in safety and radiation protection by the Secretariat for Control and Nuclear Applications (SCAN). To make this work was taken into account the characteristics of the equipment, which will be housed in the radiology and surrounding areas with this room, in addition to the review of protocols of international organizations involved in the monitoring and enforcement of safety and security radiation such as the Nuclear Safety Council (NSC), National Council on Radiation Protection & Measurements (NCRP), International Atomic Energy Agency (IAEA), American Association of Physicists in Medicine (AAPM). The calculation of shielding was conducted in accordance with the criteria and procedures set out in protocols N0 147 of NCRP and Safety Guide N0 5.11 of NSC, for which it was applied, the design parameters of the room, workload, adjacent areas, type of staff, use factors and occupation, type of staff remaining in the surrounding areas. The execution of the calculations were conducted individually with each protocol manually performed and verified using the Excel spreadsheet. The results of the calculation of thicknesses of the barriers, both primary and secondary by both protocols the materials obtained with the implementation of both protocols, especially for secondary barriers; this is justifiable because the protocol NSC 5.11 is inside in much more conservative hypothesis from the point of view of radiological protection which yields higher thickness compared to the NCRP 147 protocol, so it is recommended to apply the values obtained by the safety Guide N0 5.11 since NSC enables compliance with the ALARA (As Low as Reasonably Achievable) principle of radiation protection, while protecting the public, patients and Personal occupationally exposed (POE).