Abstract: Introduction: Radiation in medicine has brought improvements in quality of diagnosis as well as treatment of patients notwithstanding its deleterious side effects. The study is aimed at evaluating the effectiveness of structural shields in X-ray facilities. Materials and method: This was a prospective cross-sectional study aimed at assessing the adequacy of the existing structural shields in the selected facilities using NCRP 49 methodology. The target population for this study was selected X-ray facilities in Asaba, designated centre A to F. Ethical approval was granted by the Ethical and Research Committee of Federal Medical Centre Asaba. The dimensions six X-ray rooms were measured using a 7.5m/25ft measuring tape. Average technical parameters of 100kVp and 60mAs at a distance of 180cm from the tube head to the erect bucky with 30cmx30cm collimation were used. A well calibrated Inspector USB survey meter was used to measure dose rate in mR/hr and a NT6200 electronic dosimeter to measure the equivalent dose (mSv). To validate the result, three exposures were taken and the mean readings recorded. The data was analysis using SPSS for Windows, Version 22.0 (SPSS Inc., Chicago, IL, USA). Descriptive statistics was used to determine mean values. Result: The average workload in this study was 42mA-min/week. The barrier ..........