It is a requirement of the Ionising Radiation Regulations (IRR17) that every piece of radiation monitoring equipment is calibrated on an annual basis.
Calibration Sources
Ceasium 137
Americium 241
For proper testing of a survey instrument, its response should be determined for two intensities on each of its ranges; these intensities should be such that the responses are separated by at least 50% of the full-scale value of the range. Instrument readings should agree with the actual intensities within +/- 20% for the instrument to be in calibration.
All testing is conducted in accordance with the NPL publication, The Examination, Testing & Calibration of Portable Radiation Protection Instruments.
The tests carried out at Gilligan are laid out opposite.
There are several tests to be performed on the Radiation monitor:
As part of a complete solution we can also offer the calibration of densitometers against a known density step wedge. This process complements the calibration you can do in house and allows a third party verification and calibration certification to be presented to your customers.
