Regulatory and Radiological Assessment of Co-60 Teletherapy Unit at Korle-BuG.

Abstract

The regulatory and radiological safety of a Radiotherapy Unit has been assessed based on the technical and performance specification given on the GWGP 80 cobalt-60 equipment, the biological shielding effectiveness and the organizational structure for the operation of the facility. The assessment involved the evaluation of the system of safety controls and mechanisms, system of personnel monitoring, operating and emergency procedures up to waste management provision and the definition of responsibilities of staff and their training needs. Calculations and measurements were carried out on the structural shielding design of the cobalt-60 unit by standard methods. Personnel Monitoring reports on four (4) staff members were also compared with calculated and measured results. The results obtained and measurements made, all fall below the regulatory effective dose limit of 20 mSv per year for staff and 1 mSv per year for the public.


Journal of Applied Science and Technology (JAST), Vol. 4, Nos. 1 & 2, 1999, pp. 31 – 38