The descriptions within
this Learning-Doc concentrate on the lube oil system found on units that have
(or originally had) the Mk-I EHC systems. Discussion will include the oil
tank construction / major components, the motor driven oil pumps, oil coolers,
the main shaft driven oil pump, oil control valves, operating sequences (on
turning gear, during start up, on-line, shutdowns), bearing header piping,
periodic testing, and instrumentation. For each typical alarm,
discussions will include the alarm implications, probable causes, and actions
to be taken.