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View of readout on an electronic personal dosimeter. The clip is used to attach it to the wearer's clothing.
The electronic personal dosimeter (EPD) is a modern electronic dosimeter for estimating uptake of ionising radiation dose of the individual wearing it for radiation protection purposes. The electronic personal dosimeter has the advantages over older types that it has a number of sophisticated functions, such as continuous monitoring which allows alarm warnings at preset levels and live readout of dose accumulated. It can be reset to zero after use, and most models allow near field electronic communications for automatic reading and resetting.
Four EPDs in chronological order
They are typically worn on the outside of clothing, such as on the chest or torso to represent dose to the whole body. This location monitors exposure of most vital organs and represents the bulk of body mass.
These are especially useful in high dose areas where residence time of the wearer is limited due to dose constraints.
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