The LSDOS is in charge of monitoring 164,732 workers in 17,000 companies, i.e. close to 1.5million personal dosimeters supplied and used.
The LSDOS mission is to:
- Perform passive dosimetry services within the framework of regulatory surveillance of workers exposed to ionizing radiation
- Perform dosimetric measurements for the IRSN Medical Radiation protection Assessment Unit
- Study the techniques likely to replace the photographic dosimeter, for their production in the medium term
- Carry out inter-comparisons:
- Regulations with approved international laboratories (EURADOS, AIEA etc) (obligation scheduled by the regulations in force
- At an international level (EURADOS, AIEA etc)
- Advise occupational physicians and skilled radiation protection personnel on the regulatory dosimetric follow-up of exposed workers
- Participate in enquiries on regulatory limit overshoots and result anomalies.
For photographic dosimeters, the LSDOS has semi-automatic processing systems. A bar code system allocated to each dosimeter enables follow up throughout the processing steps: automatic chemical development, automatic self-read and manual read enabling the degree of photographic film shading to be measured.
For all trace detector dosimeters (concerning surveillance of neutron doses), the LSDOS has a laboratory at the Vésinet unit, dedicated to the different chemical processing steps. It is associated with two automatic readers for determination of the dose received.
For thermo-luminescent dosimeters, the LSDOS has in its Fontenay-aux-Roses unit, two HARSHAW 8800 automatic readers and three manual dosimeter readers (LTM and FIMEL).
For environmental thermo-luminescent dosimetry, a specific PANASONIC automatic reader is used on the Fontenay-aux-Roses site.
All the dosimeters are conditioned by automatons, which process more than 2 million dosimeters per year.
Each unit has computer facilities associated with calculation software to determine the doses received. A central computer system processes the dosimetric data.
New RPL dosimeter (french page)