الخلاصة:
In this work, the indoor radon concentration, the annual effective dose
rate and the annual equivalent dose to the lung and the populace risk were
estimated in 33 elementary and secondary schools in Directorate of
Education in the Northern of Hebron province-Palestine. Some rooms
from first floor, second floor and third floor were chosen from each school
making a total of 513 classrooms and other rooms. The results show that
the total average radon concentration levels of Bani Na im, Sa ir, Ash
Shuyukh, Kuziba and Shuyukh al Alarrub sites are 71.6, 69.0, 75.4 and
67.5 Bqm-3, respectively, with an average value of 71.1 Bqm-3. These
values lead to the average annual effective dose rate 0.45, 0.44, 47 and
0.43 mSvy-1, respectively. The annual equivalent doses rates to the lung
in the studied area were found to be as follows: 5.73 ×10-8,5.52 ×10-8,
6.03 ×10-8 and 5.40 ×10-8 Svyr-1, respectively. These values are within
the ICPR recommended values and the results show no significant radiological
risk for the pupils and stuffs in the schools under investigation.
Consequently, the health hazards related to radiation are expected to be
negligible.
