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CT scan room is a radiation working area. The Increasing workload in CT is subsequently increasing the risk of radiation hazards to the persons working around. We aim to evaluate protective barriers in the CT scan room at a Medical college, in Chitwan, Nepal. The total number of head and body scans and their corresponding CT-DLP values of a selected week were taken for the calculation of unshielded secondary air kerma at a 1m distance from the isocenter of the gantry. The distances of barriers from the isocenter of the gantry and their thickness were measured by measuring tape and Vernier caliper. The amount of unshielded air kerma at each barrier distance was calculated by inverse square law which was converted into transmission factors. Data were analyzed using an IBM SPSS 20 software. The thicknesses of lead and concrete were calculated from the standard graphs given by National Council on Radiation Protection and Measurements (NCRP). The necessary barrier thicknesses for console wall, corridor walls, reporting room wall, backyard wall, and ceiling were 190mm, 223mm,190mm,195mm,156mm, and 280mm of concrete respectively whereas for console room door, console room window and the entrance door were 2.00mm,2.09mm and1.53mm of lead equivalent respectively according to their transmission factors. The thicknesses of the console wall, corridor walls, reporting room wall, backyard wall, and ceiling present in the CT room were 280mm of concrete whereas the console room door, console room window, and entrance door were 2.00mm, 2.36mm, and 2.00mm of lead equivalent respectively. In short, the barriers in CT room have an equal or greater thickness than was necessary to stop hazardous radiation. The study showed that radiation shielding status of diagnostic CT scan room of CMCTH is adequate and there is no risk of radiation hazards. [ABSTRACT FROM AUTHOR]