Author/Authors :
abozeed, mona port said university - faculty of engineering - mathematics and physics department, port said, egypt , allam, kh. a. nuclear and radiological authority - department of nuclear law, Cairo, Egypt , metwali, mos ad a. port said university - faculty of science - physics department, Port Said, Egypt , el. herizy, a. port said university - faculty of engineering - mathematics and physics department, Port Said, Egypt
Abstract :
A determination of cement brick and room’s dimensions effect on public exposure dose has been carried out. Samples were collected from two cement brick factories in Port Said, Egypt. The samples were prepared and analyzed for activity concentration using HPGe detector with a specially designed shield. The publicexposure dose was calculated by using stander room model calculation, then for three traditional room dimensions used in Egypt compared with the stander one. The results show that there is no major difference due to room size and the annual dose rates ranged from 100 to 170 μSv.yr-1for inhabitants who are spending 80% of the indoor time. These values are low from the point of view of radiation protection (The average worldwide value is 2400 μSv.yr^-1). The behavior of the specific effective dose rate (nGy.h-1 per Bq.kg^-1) with wall width shows that the first 5 cm of the wall width is responsible of 75% of the exposure dose rate inside the room. The results show the major effect of the wall tiling materials.
Keywords :
Gamma ray spectrometry , Dose rate , Building materials , Room model calculation.
