ORNL-4191 - the Molten Salt Energy Technologies Web Site

2.5 PUMPS
P. G. Smith A. G. Grindell
Mark-2 Fuel Pump
As reported previously, the Mark-2 (Mk-2) fuel
pump was designed to give more salt expansion
space in the pump bowl, thus eliminating the need
for an overflow tank. As a consequence of the
deeper bowl, the Mk-2 rotary element has a longer
unsupported length of shaft than the Mk-1. The
device for removing gaseous fission products from
the salt is also different in the Mk-2 bowl.
Fabrication of the Mk-2 pump tank was com-
pleted, and the rotary element was modified so
that the joint between the bearing housing and
shield plug can be seal-welded should the pump be
1
si
45
NOZZLE
~
needed at the MSRE. The pump tank is being in-
stalled in the pump test facility, and the facility
is being prepared for tests with molten salt to
investigate the adequacy of the running clearances
and the performance of the xenon stripper.
Spare Rotary Elements for MSRE Fuel
and Coolant Salt Pumps
The spare rotary element for the coolant salt
pump3 was assembled, tested, and fitted for
service at the MSRE. The joint between the
bearing housing and the shield plug was seal-
welded to eliminate the possibility of an oil leak-
age path from the lower seal catch basin to the
'Ibid., p. 64.
3Zbid., p. 65.
Fig. 2.7. Experimental Apparatus for Nozzle Stress Tests.