Calibration of Survey Meters at the Secondary Standards Dosimetry Laboratory at the Radiation Protection Institute of Ghana Tomic Energy Commission

Some digital and analogue radiation surveys meter have been calibrated at the Secondary Standard Dosimetry Laboratory at Radiation Protection Institute of Ghana Atomic Energy Commission using Cs-137 radiation source. All the survey meters were a total of ten having the ratio of 2: 8 indicating 20 % were analogue whereas 80 % were digital survey meters. Calibration of radiation survey meter instruments is a process which may be conducted with varying degrees of accuracy and precision. Both are a function of the facilities and equipment, time, personnel and financial resources available to perform the calibration. Proper care of radiation detecting and measuring equipment, as with all equipment, is the primary mechanism for ensuring its proper functioning. Radiation measuring devices need to process calibration, which might lose their sensitivity and extent of the response and the amount of stability under a changing condition from time to time in which this period depends on the nature and the use of radiation field in which the device is used. For all the selected radiation survey meters brought to Secondary Standards Dosimetry Laboratory, the radiation survey meter from the company S5 had the highest response whereas the survey meter from S8, had the lowest response hence the highest calibration factor.