Published on: Recommendation
- Occupational radiation exposure
- radiation protection technology
Monitoring the Eye Lens Dose
Recommendation by the German Commission on Radiological Protection
Adopted at the 277th meeting of the SSK on 02/03 July 2015
Abstract
The use of an Hp(0,07) or H'(0,07) dosimeter will lead to a significant overestimation of the eye lens dose for low-energy beta radiation (< 1 MeV, e. g. Re‑186). As a result of this, only the operational quantities Hp(3) and H'(3) are suitable for measuring the eye lens dose in beta radiation fields. Hp(3) and H'(3) are suitable for individual and area monitoring, respectively, with respect to the eye lens dose in both, photon and beta radiation fields. The SSK, therefore, recommends the adoption of these two operational quantities. The pending calculation of the conversion coefficients H'(3)/Ka (Ka: air kerma) for photon radiation is still required in order to introduce these operational quantities into legislation. The operational quantities Hp(0,07) and H'(0,07) can also be used in photon radiation fields that do not significantly contain beta radiation.