A. It is an apparatus having two passages, one for steam passing from
boiler to heater pipes in tank and another passage for oil from tank
before it is delivered to burner. In this manner the oil before reaching
the burner is heated much higher than the temperature of that contained
in tank.
53. Q. In the event of the heater pipes or connections becoming
defective, how could the oil be heated in tank?
A. By closing the firing valve, closing the valve on heater pipe, and
opening valve on heater box, the steam from heater throttle can be
passed directly through the oil feed pipe to the fuel supply.
54. Q. In the event of an objectionable quantity of water in oil, how
can it be removed?
A. In some instances the tanks are provided with drain pipes for this
purpose, but in the absence of same, the feed hose or pipe between
engine and tank can be disconnected and used as a drain to fuel oil
tank.