Modification of dose algorithm for Teledyne 9150 TLD system and performance test of the algorithm via intercomparison studies

To encourage dosimeter processors to evaluate personnel radiation dose more accurately, the Ministry of Science and Technology (MOST) of Korea issued an Ministerial Ordinance on the technical criteria on personnel dosimetry in August 1992 which was very similar to the ANSI N13.11 standard. Korea Atomic Energy Research Institute (KAERI) has modified the dose calculation algorithm of our Teledyne 9150 TLD system to meet the 8 test categories specified in the MOST Ordinance since 1991, and to provide a dosimeter performance test program to all domestic dosimeter processors. This paper describes the modified calculation algorithm, radiation fields used for modifying the existing algorithm, and presents intercomparison results for the performance of the modified algorithm with Atlan-Tech Inc., Oak Ridge National Lab. (ORNL), Japan Atomic Energy Research Institute (JAERI) and Australian Radiation Lab. (ARL). All intercomparison results showed a good agreement between irradiated and evaluated doses within the tolerance level of MOST Ordinance