Ventilation systems at nuclear facilities are monitored to ensure the public is protected from unanticipated releases or emissions that exceed regulatory requirements. Stack monitoring helps the station demonstrate that it is maintaining regulatory compliance in accordance with its license and can be used as a diagnostic tool for identifying adverse station conditions. Typical monitoring can include monitoring for tritium, carbon-14, iodine, noble gases, and particulates.

Stack monitoring takes place in line with the exhaust flow of the stack through sampling probes which often use long runs of tubing to transfer the effluent to the analytical equipment. Typically, a small percentage of the exhausted air stream is sampled, and the results are extrapolated. These conditions can cause line loss, poor sampling characteristics, as well as measurement uncertainty.

Our stack monitor commissioning and Quality Assurance service includes everything needed to establish that your monitoring system is providing reliable, accurate results including the establishment of correction factors through line loss determination.

Why Us?

  • Comprehensive Testing

    Stack exhaust and stack monitor flow verification, concentration profiles, and line loss determination/sampling efficiency provide all the information needed to calculate emissions.

  • Higher Resolution Capabilities

    We use multi-point verification of stack exhaust flow at higher resolution and accuracy than typical. Permanently installed, velocity probes ensure the quality of the exhaust flow data.

  • Gain the Confidence of your Regulator

    Our extensive experience in verifying and calibrating emissions data will help your regulator become confident in the results.

  • Quality Advice

    The advice we give on how to get the best performance and most reliable results from your monitoring system is backed by our experience.