inspected or repaired while the ship is still in the
SUMMARY
water.
The second sealing system is the stuffing box
In this chapter, we have provided you with an
that has been incorporated into the mounting ring.
overview of the power train aboard gas turbine
By first inflating the seal and then removing the
ships. We have described how the power from the
seal drive clamp ring, seal, face insert, face
GTE is transmitted to the MRG through the
carrier, and bellows assembly, you can install
shafting to the CRP propeller. This propeller
packing rings and packing. You can then bolt a
system provides a means for rapid and efficient
gland follower to the mounting ring and adjust
ship's acceleration and backing down. Knowledge
it to provide enough leakage for lubrication. You
of how the MRG system, CRP system, PA
can rotate the shaft but must keep it under
system, and the shafting system are constructed
observation.
and their operation will be helpful to you in main-
Figure 8-31 is a typical diagram of piping to
taining and operating this vital equipment.
the stern tube seal. Consult your ship's EOSS for
your ship's piping and valve arrangement and
pressure settings.
The inflatable seal can be inflated either by
ship's LP air or a compressed air bottle.
8-49