An International Double-Blind, Peer-Review Journal by NSTRI

Document Type : Research paper

Authors

Radiation Applications Research School, Nuclear Science & Technology Research Institute, Tehran, Iran

Abstract

In a radiation individual monitoring program, the type testing of measuring devices is a great important part of the quality management system. The IEC-62387 standard applies to dosimetry systems that measure external photon and/or beta radiation within limited ranges of the associated physical parameters. In this work, a type-testing program was conducted for a manual thermoluminescence dosimetry (TLD) reader employing the IEC-62387  radiation and environmental performance criteria. The uncertainty of non-linearity of the response of the dosimetry system in a range of 0.7-850 mSv was obtained between -15% and + 17%, which fulfilled the IEC standard range of -16% to +18%. Furthermore, the total uncertainty of all reader tests was measured to be 12%, which was less than the criteria of 20% in the IEC standard. Thus, it can be concluded that the TLD reader met all requirements of the IEC standard for the reader-tests by an appropriate margin.

Keywords

1.  IAEA, International Atomic Energy Agency, Occupational Radiation Protection, IAEA ‎Safety Standard, No: GSG-7 (2018).‎
 
2.   IEC, International Electrotechnical Commission, Thermoluminescence dosimetry systems for ‎personal and environmental monitoring, IEC 61066 Ed. 2 (2006).‎
 
3.   IEC, International Electrotechnical Commission, Radiation protection instrumentation—‎passive integrating dosimetry systems for personal and environmental monitoring of photon ‎and beta radiation, IEC 62387 (2012).‎
 
4.    J. G.Alves, R. Montezuma, O. Margo, L.Santos, Study on quality control parameters of   a ‎TLD system for individual monitoring, Radiat. Prot. Dosim. 111, 21–25 (2004).‎
 
5.      K. J. Velbeck, L. Z. Luo, K. L. Streetz, Type testing the model 6600 plus automatic TLD ‎reader, Radiat. Prot. Dosim. 120, 303–306 (2006).‎
 
6.   M. Weinstein, Y. Shemesh, A. Abraham,  U. German, Use of statistical checks as ‎maintenance tools for TLD readers, Radiat. Prot. Dosim. 125, 109–112 (2007).
 
7.  L. Z. Luo, K. J.Velbeckand, J. E. Rotunda, Experience of type testing Harshaw advanced ‎TLD system to new IEC-61066 standard,  Radiat. Meas. 43,594–598 (2008).‎
 
8.    C.Rizk and F. Vanhavere, A study on the uncertainty for the routine dosimetry service at the ‎Lebanese atomic energy commission using Harshaw 8814 dosemeters. Radiat. Prot. Dosim. ‎‎170, 168-172 (2016).‎
 
9.     M. Malek Mohammadi and S. M. Hosseini Pooya, Type testing of model 7200 automatic ‎TLD reader, Radiat. Prot. Dosim. 174 , 63-68 (2017).‎
 
10.   J. Brunzendorf and R. Behrens, How to type test the coefficient of variation of an ‎indication, Radiat. Prot. Dosim. 123, 21– 31(2007).‎