In terms of exposure measurements, how often should periodic checks be conducted?

Periodic checks for exposure measurements are typically recommended to be conducted every six months to ensure the accuracy and reliability of the data collected. This interval allows for a sufficient timeframe to monitor any changes or fluctuations in exposure levels while providing a balance between frequency and practical resource allocation. Conducting these assessments too frequently, such as monthly, could lead to unnecessary resource expenditure without substantial changes in the exposure environment. Conversely, checking annually might allow for significant changes to occur without timely detection, potentially putting individuals at risk. The semi-annual approach thus serves as an effective strategy to maintain a safe environment while ensuring that any necessary adjustments or interventions can be made in a timely manner.