CHAPTER 7
ENGINEERING SUPPORT
AND AUXILIARY EQUIPMENT
Gas turbine propulsion plants are dependent
are s harmful to machinery as improper
on reliable auxiliary systems. The proper
lubrication.
maintenance and operation of auxiliary systems
will enhance the performance of main propulsion
Early replacement and/or failure results
machinery. As a GSE or GSM, you must have
from inadequate attention to detail during
maintenance procedures. Improper materials,
a thorough knowledge of main propulsion
auxiliary machinery and systems. In this chapter
wrong clearances, misalignments, or inatten-
we will describe some of the maintenance,
tion to torque specifications are but a few
operating problems, and repair of pumps,
of the commonly overlooked maintenance
purifiers, air compressors, dehydrators, waste-
requirements. Memory should not be relied
heat boilers, and oily-water separators.
upon to determine when an inspection should
be made, bearings lubricated, or equipment
Before any maintenance or repair work is
rotated. Sooner or later something will be
started, you should consult the MRCs and the
neglected and failure will result, posing
manufacturers' technical manuals. These
a safety problem for personnel and equip-
materials contain information concerning
ment.
specifications, clearances, procedural steps, and
troubleshooting techniques of engine-room
With the knowledge gained in this chapter,
auxiliary machinery.
you should be able to describe pumps, purifiers,
air compressors, dehydrators, waste-heat boilers,
Proper maintenance or repair work consists
and oily-water separators in terms of their
of problem diagnosis, disassembly, measure-
construction, function, and operation. The
ments, corrections of problems, and reassembly.
material presented in this chapter is representative
in nature. By studying this material, you should
Use of proper tools, knowledge of the construc-
tion of equipment, proper work-site management,
be able to relate to the specific equipment found
on your ship.
and cleanliness are keys to successful maintenance
and repair work.
Good housekeeping is an integral part of
preventive maintenance. Nothing adds more to
PUMPS
the impression of a well-maintained plant than
cleanliness. Team work is required on the part of
Pumps are vitally important to the operation
all hands to maintain a clean plant. Maintenance
of your ship. If they fail, the power plant they
personnel must realize that the repair job is NOT
serve also fails. In an emergency, pump failures
complete until the old and surplus material has
can prove disastrous. Therefore, maintaining
been removed. It is difficult for operators
pumps in an efficient working order is a very
to remain concerned about cleanliness when
important task of the Gas Turbine Systems
improperly designed or maintained equipment
Technician.
continually allows oil or water to leak. If a piece
of equipment is designed to leak a fluid, be sure
It is not practical or necessary to mention
the leakoff remains within specifications.
all of the various locations where pumps are
found aboard ship. You will learn their
Work-site cleanliness is as important as
location and operation as you perform your
space cleanliness. Dirt and foreign matter
duties as a GSE or a GSM. Pumps with
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