The special outpatient's clinic "Incorporation measurements - ultra sensitive full body counter" is approved as "Authorised dose measuring point" according to §34 of the radiation protection act (StrSchG) and serves for the systematic monitoring of people exposed to radiation at work who are surrounded by open radioactive substances in the course of their job.
Radioactive substances (gamma rays and high-energy beta emitters) may be detected and quantified in the lowest areas of activity in the human body with this measuring device.
The measuring chamber, in which the people exposed to radiation in their work are measured, is 3.40 m in length, 2.90 m in width, 2.60 m in height and a total weight of around 72 tonnes.
The walls and the ceiling of the measuring chamber are protected with radioactive-proof steel with a thickness of 15cm, the base-plate with the same steel with a thickness of 22.5cm. In addition the measuring chamber is lined inside with 2cm of lead and 0.5 cm copper. The design of the measuring chamber guarantees an ultra-efficient all-round protection against natural environmental radiation.
A ventilation system continuously pushes fresh air via a canal filter in the channel; the air is filtered with a filtration efficiency of > 99.97% for particles greater than 1µm.To avoid penetration of unfiltered air into the closed measuring chamber a low overpressure shall also be maintained in the chamber.
The detector system comprising 4 NaI-crystal units with a diameter of 8 inches, a thickness of 4 inches and 12 photo multipliers (each 3 photomultipliers per detector).The detectable energy area is around 60keV to 2MeV.
Quality assurance is guaranteed by a trained quality assurance manager, the quality assurance system is implemented according to the QM guidelines pursuant to Austrian Standard EN ISO/IEC 17025.