Comparative analysis of TLD dose determination using the method of reducing background dose and residual dose

Thermoluminescence Dosimetry (TLD) is used to measure the ionizing radiation (dose) that a person receives at work (personnel dosimetry) or at a specific location (environmental dosimetry). The total intensity of the emitted light can be recorded and used to calculate the dose stored on a dosimeter containing a thermoluminescent crystal. The amount of light intensity emitted depends on the amount of radiation exposure received. Type TLD-0110 is made of lithium fluoride (LiF:Mg, Ti). This type of TLD is a TLD that is often used for monitoring personnel radiation doses in the KNS (Serpong Nuclear Area). The aim of this research is to investigate methods to improve measurement accuracy by applying TLD-specific residual dose correction or using background dose correction (Blank TLD). Residual dose is the dose received by a person from a certain source that can be estimated or measured by considering the protective measures taken for the source, route or person, while TLD Blank is used to measure radiation dose that comes from exposure to background radiation (background radiation). at that location. The corrections of the two methods are qualitatively equivalent. Calculation methods for evaluating TLD readings should be significantly improved, because radiation exposure should always be designed in such a way as to minimize radiation exposure to workers. Dosimeters should ideally only record low doses from natural background (TLD Blanko), in fact each radiation worker may have a different level of radiation exposure depending on the workload they have. This method assumes that all workers have the same background dose, which can lead to errors in assessing true health risks. Applying a residual dose correction that is more accurate and in accordance with the dose level received by radiation workers, based on the actual workload, can help increase the accuracy of worker dose measurements. This is true for most cards, therefore the residual dose correction will increase the size of a large number of cards. (author)