Scientists from the U.K. and the U.S. are collaborating to perform measurements involving three different radionuclide monitoring techniques with the collective goal of better characterizing radionuclide emissions of a nuclear power reactor and how those might affect the International Monitoring System. The Xenon Environmental Nuclide Analysis at Hartlepool (XENAH) collaboration will perform these measurements at the Hartlepool Power Reactor in northeast England with cooperation of the reactor operator, EDF Energy. The three radionuclide monitoring techniques are: stack monitoring of radioxenon emissions at the source, stand-off measurements of radioxenon after atmospheric transport of several kilometers utilizing sensitive air sampler/analyzers, and ultralow background measurements of relevant environmental samples collected at and near the reactor. Measurements began this year and will take place over 1 – 2 years. The measurement effort and techniques will be described, along with the scientific questions we plan to address.
Utilizing a stack monitor, stand-off detection via sensitive radioxenon sampler/analyzers, and ultralow background sample measurements at a nuclear reactor, U.K. and U.S. scientists are increasing understanding of radioxenon sources that may affect the IMS.