M.Tech. (Radiography) / Systematic implementation of a quality control (QC) programme is crucial for any diagnostic radiology department if consistent optimal equipment performance, quality images, accurate diagnosis and quality services at optimum radiation dose and costs are to be assured. This highlighted the necessity for the Tanzania Atomic Energy Commission (TAEC) to establish a training programme to enable radiographers to implement a QC programme and associated QC measures in their departments. Most radiographers have been trained on the QC programme, however, the level of QC implementation by the radiographers is not established. The aim of this study was to investigate the extent to which the QC programme and associated QC measures are being implemented by radiographers in conventional diagnostic radiography units, in Tanzania. A quantitative cross-sectional study design, using a questionnaire, was conducted on a sample of radiographers who have been trained on the QC programme, and who were practicing in hospitals within Tanzania. The study found that implementation of the QC programme and associated QC measures was poor. Most QC measures were not being performed and that only a few tests were being performed but not consistently. Furthermore, there were no records and procedures available for the QC programme. The challenges identified were negligence by the radiographers, lack of standardized test tools, lack of hospital managerial support, lack of enforcement and lack of motivation and coordination. Multifactor interventions by the TAEC, Ministry of Health and Social Welfare, radiographers and the hospital management teams are needed to improve the implementation of the QC programme.