An off-gas processing system was installed in the J-PARC spallation neutron source to reduce radioactivity of xenon-127 and tritium contained in a helium cover gas in a surge tank of a mercury circulation system to obey the regulation by law. In addition to this role it has been utilized to a purging process before the target vessel replacement and an air-flow control procedure to minimize uncontrollable radioactivity release during the replacement. An standard and urgent model plans of the off-gas processing system operation were established indicating that 31 days were required at least to replace the target vessel.
CITATION STYLE
Kai, T., Uchida, T., Kinoshita, H., Seki, M., Ooi, M., Wakui, T., … Takada, H. (2018). Off-gas processing system operations for mercury target vessel replacement at J-PARC. In Journal of Physics: Conference Series (Vol. 1021). Institute of Physics Publishing. https://doi.org/10.1088/1742-6596/1021/1/012042
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