Keywords
swinging door
concrete shielding
Linear accelerators and radiation maze
Abstract
Development and re-designing of different accelerators and industrial irradiators have been reviewed and studied. In the present work, a new design approach for the safe movement of a swinging radiation shielding steel door for a Medical Accelerator in Tumor hospital has been achieved according to the requirements of nuclear safety
The Proposed design maintains high radiation safety standards outside concrete shielding main opening and fulfill high quality of radiotherapy. These work depends on radiation shielding elements through using thickness of main opening of radiation concrete shielding at the end maze leg and activity of medical Linear accelerator. Thickness of primary barrier, irradiation room dimension, radiation maze elements, area of main opening between irradiation room and radiation maze, maze form, maze legs, numbers of bends on right angles and safety electrical control system have been studied. The door calculated weight maintains 4.4 tons from different steel sections, steel face plats and lead plats. Useful design of safe hydraulic system is designed to maintain safe slowly opening and closing for radiation heavy steel swinging door by using slow swinging poor door operating speeds to maintain slowness safe time (29 sec) through using programmable logic safety electrical control system (P.L.C).
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