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CX-011373: Categorical Exclusion Determination

Infrastructure Upgrade to the Massachusetts Institute of Technology Research Reactor in Support of Operational Safety
CX(s) Applied: B2.5
Date: 10/17/2013
Location(s): Idaho
Offices(s): Idaho Operations Office

The objective of this proposal is to improve the MIT Research Reactor safety by (1) procuring and installing a gaseous tritium detector that will monitor for airborne releases from both the reactor’s heavy water reflector and from in-core experiments involving potential salt reactor coolants and (2) augmenting the design of our new digital nuclear safety system by procuring one additional wide range neutron flux channel, modifying the three existing and one new unit to that the input impedance is increased to augment shielding against electronic noise, and by procuring a new safety system signal display unit.