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Calibration of Radiation Monitoring Instruments

29 April 2021

Radiation Protection Supervisors (RPSs) must arrange for radiation monitoring instruments - such as contamination monitors - to be calibrated once a year at least.

Radiation monitoring instruments that are out-of-date for calibration or faulty must not be used, and should be removed from the work area.  The instruments will have a sticker on them showing the date that it was last calibrated or when it is due for re-calibration.  Contamination monitors ("yellow monitors”) can be calibrated by Radiation Physics at the UCLH Medical Physics and Biomedical Engineering Department. 

To arrange calibration: 

1.    Check the monitors are in good working order, free from contamination and with working batteries

2.    Complete a calibration request form and send it to uclh.radiationprotectionservices@nhs.net

3.    Raise a purchase order (£50 per monitor) choosing this supplier: 

UCL Hospitals NHS Foundation Trust
Income Services
Finance Department
250 Euston Road
London NW1 2PG

4.  Drop off the monitor(s) and purchase order(s) at: 

Radiation Physics
Department of Medical Physics and Biomedical Engineering
Level -2, EGA Wing
235 Euston Road
London NW1 2BU

For more information including on organisations that calibrate other types of radiation monitoring instruments (such as dose-rate meters), contact the Radiation Protection Team.