How often must survey meters be calibrated?

Calibration of survey meters is critical to ensure their accuracy and reliability when measuring radiation. An interval of at least every six months is generally recommended because it strikes a balance between maintaining operational readiness and the practical constraints of resources such as time and budget.

Survey meters are sensitive instruments that can drift or become less accurate over time due to various factors such as environmental conditions, mechanical wear, or electronic aging. Regular calibration ensures that the meters provide correct readings that meet safety standards and regulatory requirements. This is especially important in environments where radiation exposure is monitored, as even small inaccuracies can lead to misinterpretation of safety levels.

While more frequent calibration might improve accuracy, it can be impractical for most facilities. Calibration every year may allow for an unacceptable drift in accuracy, potentially compromising safety. Similarly, calibrating every week or month can be excessive and may divert valuable resources from other safety protocols. Therefore, calibrating survey meters at least every six months ensures a good level of accuracy while maintaining operational efficiency.