Analysis of radionuclide detection events on the International Monitoring System.

The United Kingdom (UK) National Data Centre (NDC) operates a series of custom-developed software tools for the automatic processing, analysis, archiving and interpretation of radionuclide (RN) data from the International Monitoring System (IMS) - the primary instrument for verification of the Comprehensive Nuclear-Test-Ban Treaty (CTBT). The software in-use at the NDC includes an RN Pipeline for the retrieval, analysis, categorisation and archiving of noble gas and particulate radionuclide data. On the identification of a treaty-relevant radionuclide detection or plume of radioxenon, a 'radionuclide detection event' is formed.