Liquid Metal Fuel Reactor Experiment: Quarterly Technical Report, October-December 1958 Page: 24
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Static and dynamic head in the primary and intermediate systems
were analyzed in relation to IHX leaks. Two cases, bismuth intermediate
fluid and sodium intermediate fluid, were investigated:
Bismuth
Under all reasonable flow conditions, IHX leakage is toward the
primary system. If both systems operate at full flow, the minimum
pressure differential toward the primary system is 24 psi.
Sodium
The intermediate system must be pressurized to about 110 psig
to maintain the pressure differential toward the primary system.
4. Intermediate Fluid Fill and Dump System
The system consists of these sections: melt and charge, fill, dump,
and coolant removal.
The melt tank has a volume of 25 cu ft, and is equipped with electrical
induction heaters of 50 kw capacity. Bismuth melted in this tank is passed
through a metallic filter (being developed at Alliance), a bellows seal valve,
and a "goose-neck" freeze valve, to a 65 cu ft vertical, cylindrical dump
tank. Helium gas overpressure forces molten bismuth through a dip
tube in the dump tank, then through a conventional bellows seal "fill and dump"
valve into the intermediate system. When the intermediate system is full,
the "fill and dump" valve is closed. Gas pressure is maintained in the
dump tank to combat assumed "fill and dump" valve leakage.
Intermediate fluid is dumped by opening the "fill and dump" valve
which causes a vent valve between the intermediate pump and the dump
tank to open. Most of the intermediate fluid drains into the dump tank by
gravity. After gravity draining is complete, the "fill and dump" and vent
valves are closed, and a valve is opened in the line connecting the heat
exchanger dip tube to the dump tank dip tube. A helium overpressure
introduced into the intermediate system then forces the intermediate fluid
remaining in the heat exchanger into the dump tank. A goose-neck freeze
valve is also connected to the dump tank dip tube for future draining of the
system.- 24 -
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Liquid Metal Fuel Reactor Experiment: Quarterly Technical Report, October-December 1958, report, 1958-10/1958-12; Oak Ridge, Tennessee. (https://digital.library.unt.edu/ark:/67531/metadc100986/m1/32/: accessed April 22, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.