Proficiency testing and dose comparison for external personnel dosimeters evaluation in Taiwan.

This study investigated the series of proficiency testing held by the Institute of Nuclear Energy Research (INER) from 2010 to 2017 and the benchmark of one type of dose evaluation system for personnel dosimeters in Taiwan. Based on the latest American National Standard Institute/Health Physics Society (ANSI/HPS) N13.11–2009 (R2015) performance testing standard, the personnel dose equivalent, H p (d) data of the proficiency testing programs were reanalyzed to research the dose assessment ability and the criteria update feasibility. The results showed that the tolerance level (L), absolute of bias (|B|) and standard deviation (S) for all categories of all the 8 laboratories and 4 types of dosimeter well met the latest ANSI/HPS N13.11 criteria. In addition, the measurements of the H p (d) with LiF: Mg, Ti-based TLD personnel dosimeters were also demonstrated by comparing with the MCNP6 Monte Carlo code. The dose responses were satisfactory in M100, M150 X-ray and 137Cs (including the angle tests) beams produced by INER for radiation protection level application. • In Taiwan, all 8personal dosimeter laboratories met the ANSI/HPS N13.11–2009 (R2015) criteria based on the reanalysis of pervious performance test. • The results could improve measurement quality and traceability for service laboratory using 4 different types of dosimeters. • The simulated model of Harshaw LiF:Mg, Ti-based TLD personnel dosimeter were established with MCNP6 code. • For irradiation verification, the results of equivalent dose comparison agreed within 5%–26% in the 137Cs, M100 and M150 X-ray beams. [ABSTRACT FROM AUTHOR]