ORNL-1771 - Oak Ridge National Laboratory

from 18 to 31 so that tests of long duration and
extensive tests of "new" materials can be made
rapidly. Materials such as the Hastelloy alloys,
molybdenum, and nickel-molybdenum alloys are
to be tested to determine the effects of time,
temperature, temperature difference, loop pre-
cleaning methods, fluid pretreatment methods,
corrosion inhibitors, etc.
Samples of newly designed heating equipment
have been ordered for study, with the expectation
of replacing the present method of installing
PERIOD ENDING SEPTEMBER 10, 1954
custom-tailored heating units and insulation on
each loop. Split-tube furnaces that would remain
in place from test to test may possibly be used.
The possibilities of automatizing operation of the
loops and of providing safeguards in case of
shutdowns because of power failures or other
emergencies are also being studied. The loops
have been redesigned so that they require fewer
welds, and the sharp angles of liquid flow have
been eliminated. Figure 3.6 shows the old and
the improved designs.
Fig. 3.6. Thermal-Convection Loops. (u) Old design. (b) New design. (c) New design with insulation.
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