for loose or broken clamps and general secureness of the
muffler. Check all pipes and ducts associated with the
exhaust system for holes, dents, signs of extreme
corrosion, and metallic deterioration. Also, check for
loose and broken bolts. Check the exhaust ram cap for
signs of corrosion and freedom of movement. Check the
breather tube and associated hoses for loose clamps,
holes in the hoses, and loose bolts.
4. Cooling system. Check all hoses for cracks,
cuts, signs of deterioration, and bulges (indicating the
possibility of future rupture). Check all clamps for
tightness and signs of corrosion.
Do not attempt to remove the radiator cap
until the radiator has cooled to a point where
there will be no built-up steam pressure.
Failure to observe this warning could result in
second- or third-degree burns.
The operators log (also called the station log) is a
complete daily record of the operating hours and
conditions of the generator set. The log must be kept
clean and neat. Any corrections or changes to entries
for a watch must be made by the person who signs the
log for that watch.
The log serves as a basis for determining when a
particular piece of electrical equipment is ready for
inspection and maintenance. Current and previous logs
can be compared to spot gradual changes in equipment
condition. These changes might not otherwise be
detected in day-to-day operation.
Defects discovered during operation of the unit
should be noted for future correction; such correction to
be made as soon as operation of the generator set has
Making accurate periodic recordings is particularly
important. The intervals of these recordings will be
based on local operating conditions.
The form used for log entries varies with the views
of the supervisory personnel in different plants, and
there is no standard form to be followed by all stations.
Regardless of form, any log must describe the hourly
performance not only of the generators but also of the
numerous indicating and controlling devices.
Figure 3-18 shows one type of log that may be kept
on the generator units of a power plant. This is only a
Figure 3-18.Typical generating station operators log.