Fluid level control system for a molten fuel salt sampling tank in a nuclear reactor system

A system for controlling a fluid level of an experimental tank, the system comprising

• the experimental tank associated with a first pressure transducer and having a fluid contained therein occupying an experiential tank fluid initial height;
• a sump tank associated with a second pressure transducer and having a fluid contained therein occupying a sump tank fluid initial height, the sump tank being elevationally below the experimental tank, a headspace of the sump tank and the fluid of the sump tank each fluidically coupled with the experimental tank to define a fluid control circuit therebetween;
• a drain tank associated with a third pressure transducer and having a fluid contained therein occupying a drain tank fluid initial height, the drain tank being elevationally below the sump tank, the fluid of the drain tank being fluidically couplable with the fluid control circuit;
• the experimental tank, the sump tank, and the drain tank being fluidically coupled to each other via one or more pipes;
• an inert gas system configured to deliver and to receive an inert gas from each of a headspace of the experimental tank, the headspace of the sump tank, and a headspace of the drain tank;
• and
• a control module operatively coupled with each of the first pressure transducer, the second pressure transducer, and the third pressure transducer and the inert gas system and configured to
• calculate a set target pressure for each of the headspaces of the experimental tank, the sump tank, and the drain tank based on an experimental tank fluid target height, a sump tank fluid target height, and a drain tank fluid target height, and
• cause the headspaces of the experimental tank, the sump tank, and the drain tank to transition to the calculated set target pressures and cause the fluid to circulate through the fluid control circuit and among the experimental tank, the sump tank, and the drain tank to establish the fluid at the experimental tank fluid target height for the experimental tank, at the sump tank fluid target height for the sump tank, and at the drain tank fluid target height for the drain tank.