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Technical Brief

Improved Method for Estimating Dose to the Lens of the Eye Using Hp(10) and Hp(0.07) Measurements

[+] Author and Article Information
Eyal Peri

Nuclear Research Centre Negev, P.O.B 9001, Beer-Sheva, 84190, Israel
eyalperi22@gmail.com

Adi Abraham

Nuclear Research Centre Negev, P.O.B 9001, Beer-Sheva, 84190, Israel
adlioh@gmail.com

Tuvia Kravchik

Nuclear Research Centre Negev, P.O.B 9001, Beer-Sheva, 84190, Israel
tuvkra@zahav.net.il

Marcelo Weinstein

Nuclear Research Centre Negev, P.O.B 9001, Beer-Sheva, 84190, Israel
marcelow@bezeqint.net

Dani Sattinger

Nuclear Research Centre Negev, P.O.B 9001, Beer-Sheva, 84190, Israel
sdani@inter.net.il

Omer Pelled

Nuclear Research Centre Negev, P.O.B 9001, Beer-Sheva, 84190, Israel
opelled@bezeqint.net

1Corresponding author.

ASME doi:10.1115/1.4036137 History: Received June 11, 2016; Revised February 10, 2017

Abstract

The ICRP in its statement on tissue reaction from April 2011 (?1) recommended to reduce the annual dose limit to the lens of the eye from 150 mSv to 20 mSv (averaged over five years), with no single year dose exceeding 50 mSv. IAEA TECDOC 1731 (?2) and ISO 15382 (?3) were published as guidelines to the implementation of the new limits for occupational radiation. The most accurate way to determine the dose to the lens of the eye is to use a dosimeter that is designed and calibrated for measuring Hp(3), but it will take some time (probably a couple of years) until such dosimetric system could be validated and implemented in routine monitoring. Meanwhile, in some cases, there is a need to estimate Hp(3), especially for retrospective reconstruction of dose to the lens of the eye. Therefore, in the following years, the measured values of Hp(10) and or Hp(0.07) can be used to calculate a conservative value for Hp(3). The present paper discusses a new, more accurate and less conservative way to estimate Hp(3) using Hp(0.07) and Hp(10) quantities. This new method could be used also in reporting historical personal lens of the eye doses, when Hp(3) dosimeters were not used, and in some cases it could reduce the need to use special Hp(3) dosimeters in the future.

Copyright (c) 2017 by ASME
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