VF Calibration Laboratory

The VF calibration laboratory is accredited according to the ISO/IEC 17025:2018 standard for ionizing radiation dosimetry and contamination meter quantities.

Services

CALIBRATION OF DOSIMETRIC QUANTITIES OF IONIZING RADIATION

Quantities of ionizing radiation dosimetry Extent
Kerma in the air Ka 200 nGy – 300 Gy
Kerma rate in the air pKa 300 nGy/h – 9 Gy/h
Ambient dose equivalent H*(10) 241 nSv – 360 Sv
Ambient dose equivalent rate pH*(10)  361 nSv/h – 10,8 Sv/h
Personal dose equivalent Hp(10) 243 nSv – 365 Sv
Personal dose equivalent rate pHp(10)  365 nSv/h 10,8 Sv/h
Photon dose equivalent Hx 228 nSv - 342 Sv
Photon dose equivalent rate pHx  342 nSv/h – 10,3 Sv/h

CALIBRATION OF HIGH DOSE RATE METERS

  • Standard used: Ionization chamber connected to an electrometer. At present, the process of establishing the mentioned set as the national standard of high dose rate is underway
  • Radionuclides used for calibration: Co-60 and other radionuclides according to the availability of an external radionuclide source
  • Quantities of ionizing radiation dosimetry:
Quantities of ionizing radiation dosimetry Extent
Kerma in the air Ka up to 2500 Gy
Kerma in the air rate pKa  up to 2500 Gy/h

CALIBRATION OF CONTAMINATION DETECTORS

  • Standard used: Certified reference materials traceable to the National Standard of Activity National Standard of Radionuclide Activity Units | Czech Metrology Institute (cmi.cz)
  • Radionuclides used for calibration
    • alpha (Am-241, U-nat)
    • beta (C-14, Cl-36, Co-60, Sr/Y-90, Cs-137, Tl-204)
  • Quantities of contamination meters:
Veličiny měřidel kontaminace Rozsah
Plošná aktivita radionuklidů alfa 0,7 Bq/cm2 – 2500 Bq/cm2
Aktivita radionuklidů alfa 20 Bq – 20000 Bq
Plošná aktivita radionuklidů beta 0,25 Bq/cm2 – 2500000 Bq/cm2
Aktivita radionuklidů beta 40 Bq – 2000000 Bq

Location:
Sample measurements are carried out primarily in the laboratory in Černá Hora. In the case of contamination detectors, measurements can be carried out at the customer's location upon agreement.

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