Single Component Sorption-Desorption Test Experimental Design Approach Discussions

摘要

A task was identified within the fission-product-transport work package to develop a path forward for doing testing to determine behavior of volatile fission products and to engage members of the NGNP community to advise and dissent on the approach. The following document is a summary of the discussions and the specific approaches suggested for components of the testing. Included in the summary are the minutes of the conference call that was held with INL and external interested parties to elicit comments on the approaches brought forward by INL participants. The conclusion was that an initial non-radioactive, single component test will be useful to establish the limits of currently available chemical detection methods and to evaluate source-dispersion uniformity. In parallel, development of a real-time low-concentration monitoring method is believed to be useful in detecting rapid dispersion as well as desorption phenomena. Ultimately, the test cycle is expected to progress to the use of radiotraced species because this method will allow the lowest possible detection limits. The consensus of the conference call was that there is no need for an incore test because the duct and heat exchanger surfaces that will be the sorption target will be outside the main neutron flux and will not be affected by irradiation.