Occupational Radiation Protection: Protection of Workers
This new badge uses the most advanced passive dosimetry technique available:
In compliance with current regulations, this latest generation dosimeter is specified
for detecting X and γ rays and β radiation in all sectors of activity (industrial,
medical, dental, research, etc.).
It is recommended for dosimetric monitoring for workers and for areas (ambient
dosimetry, etc.) and the environment.
How does RPL work?
1) Ionising radiation (X- and γ-rays or β) strips away electrons from the structure of the glass detector.
These electrons are then trapped by impurities contained in the glass (silver ions).
2) When placed under an ultraviolet light (320 nm wavelength), the electrons emit orange luminescence as they return to a lower energy level.
The intensity of this luminescence is proportional to the dose received.
Excellent angular response, regardless of the angle of incident radiation
5 measurement points in standard mode, 15 measurement points in analytical mode
Dosimeters can be read as many times as necessary
Information on the nature and energy of the radiation and on exposure conditions can be obtained
Images of the dose can be visualised and archived
|Energy range||Dose range|
|X- and γ-rays||10keV to 10 MeV(1)||< 0.02 mSv(2)||10 Sv|
|β particles||100keV to 3 MeV(1)||< 0.02 mSv(2)||10 Sv|
|(1) Values according to the standard applicable for routine operation. Tests performed using accelerators have shown that this type of dosimeter is suitable for use with radiation at higher energy.
(2) Under specific laboratory conditions, the detection threshold is a few μSv. The lowest non-zero value given for the exposure of workers is 0.05 mSv.
An image of the entire dosimeter can be grabbed thanks to a slide scan reader (Fig 2).
Automatic readout is performed using ATG reader FDG 660.
It provides (with the algorithm) very useful information on the nature and the energy of the radiation and, in some cases, on exposure conditions
The dosimeter badge is light (12 gr), robust and slim (8 mm)
The person wearing the badge is clearly identified and colour-coding is used to show the period of wear
Worn either on a strap around the neck or pinned to work clothes using a shirt clip which is kept by the wearer.
Ready for immediate use
RPL badges ensure compliancy with health and safety practices RPL badges are shrink-wrapped before each new issue This prevents them from coming into direct skin contact with two successive wearers