Measurement of Indoor and Outdoor Background Ionising Radiation Levels of Kwali General Hospital, Abuja

Abstract

Measurement of indoor and outdoor background ionising radiation level at Kwali General Hospital, Abuja, Nigeria was carried out using a well calibrated Geiger muller counter; Atomtex AT1117M radiation monitor. The dose equivalent results obtained range from 0.100±0.001 ìSv/h to 0.124±0.007 µSv/h with an average of 0.107±0.003 ìSv/h for indoor measurement while it ranges from 0.100±0.001 µSv/h to 0.122±0.003 µSv/h with an average of
0.108±0.003 µSv/h for outdoor measurement respectively. The obtained values are below the standard background radiation of 0.133 µSv/h. The study also revealed that the average annual equivalent dose rate is 0.750± 0.020 mSv/y and 0.189±0.005 mSv/y for indoor and outdoor measurements respectively. These results revealed that the dose levels in all of the locations (indoor and outdoor) were below the 1 mSv/y maximum permissible limit for the public set by International Commission on Radiological Protection (ICRP). Therefore, Kwali General Hospital is radiologically safe ©JASEM