Radiation area thermoluminescent dosimeters

A. Thermoluminescent dosimeter (TLD) badges used to provide a permanent record of the cumulative exposure to the whole body must be worn on the trunk (below the shoulders and above the hips) outside of clothing on the portion or area of the body nearest the radiation source. The dosimeter window must face out from the body. 

Both film dosimeters and thermoluminescent dosimeters are suitable for routine issue over periods of one to three months. For the purposes of short term dose control, it is necessary that these dosimeters are supplemented with a direct reading dosimeter. In addition, if persons are working in areas where the radiation dose can vary widely in space or time, for example, during refuelhng or maintenance activities, they should be provided with a dosimeter incorporating an alarm that sounds if a preset dose or dose rate is reached. 

People who work in radiology laboratories wear dosimeters attached to their clothing to determine any exposure to radiation such as X-rays, gamma ray, or beta particles. A dosimeter can be thermoluminescent (TLD), optically stimulated luminescence (OSL), or electronic personal (EPD). Dosimeters provide real time radiation levels measured by monitors in the work area. 

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