Objekt Vroča Celica
Hot Cells Facility (Objekt Vroča Celica, OVC) is intended for characterisation, sorting and treatment of radioactive materials.
The OVC comprises three rooms:
  • ROOM A:   Manipulation room
  • ROOM B:   Central preparatory room
  • ROOM C:   Radiological measurements room

V Room B comprises two hot cells VC1 and VC2 , and eight digestors (D1 – D8). Between the hot cells there is a depository for solid radioactive materials with 32 positions (dimensions Φ 100 mm x 100-250 mm). VC1 and digestors D1 – D4 se uporabljajo za delo z radioaktivnimi viri; dostop je iz the manipulation room A. VC2 presently serves as a radioactive material storage. Otherwise it can be upgraded for work with radioactive sources from the radiological measurements room C. The remaining four digestors (D5 – D8), located within the radiological measurements room C, are used for various measurements. All rooms are under continuous radiological surveillance.

Hot cells and digestors usage and equipment available
  • VC1 is connected with the TRIGA reactor via pneumatic system for transferring irradiated samples. It is equipped with a device for the opening of irradiation containers and master-slave manipulators for handling radioactive sources. It is designed to work with activities of up to 1000 Ci (Co-60).
  • VC2 is intended for storing radioactive sources with activities of up to 1000 Ci (Co-60).
  • D1 and D2 are equipped with manipulators and intended to manipulate sources with activities of up to 10 Ci (Co-60).
  • D3 and D4 are intended to manipulate sources with activities of up to 0.1 Ci (Co-60).
  • D5 – D8 are intended for carrying out radiological measurements.
Equipment available at OVC
  • Crane with load capacity of 3.5 tons
  • Ultrasonic decontamination bath (dimensions 500 x 400 x 400 mm)
  • Hidraulic press for compacting materials in standard 210 L casks
  • Portable booth made from PVC-film strengthened poliester (dimensions 4 x 2.5 x 2.5 m)
  • Mobile vacuum cleaner with HEPA filtration
  • Electrical shears (for cutting 0.9 mm thick plates)
  • Forklift truck with load capacity 1.5 tons
  • Electronic balance with a load capacity 150 kg
Equipment for radiological characterisation
  • Alpha spectrometer (six semiconductor detectors with a diameter of 2.4 cm)
  • Low level alpha-beta counter (eight proportional detectors for samples with a diameter of up to 5.2 cm
  • Gamma spectrometer for objects radiological characterisation (40% relative efficiency)
  • Total alpha-beta counter for smears and filters (samples with diameters of up to 6 cm)
Basic information
Jožef Stefan Institute (JSI)
Reactor Infrastructure Centre
Brinje 40
SI-1262 Dol pri Ljubljani, Slovenia, Europe

Prof. Borut Smodiš

E: borut.smodis@ijs.si

T: +386 1 588 53 63