Figure 3-6.--0verall view of the PACC.
control and monitor all systems and components that
for much of the MCS's associated auxiliary and support
interface with the shaft control units (SCUs). This
systems operations. Figure 3-6 shows that each section
includes the propulsion machinery, propulsion
of the PACC is dedicated to particular types of control
auxiliaries, and independent auxiliaries. The EPCC
and monitoring. Some of the major controls and
controls and monitors the ship's service gas turbine
monitoring systems are discussed briefly in the
generators (SSGTGs) and electrical distribution system.
following paragraphs.
This includes restart control and monitoring of the four
air-conditioning plants and some fuel service
Fuel Oil Service System
monitoring. The EOOW/LU controls and monitors the
MCS data logger and bell logger. We will briefly discuss
the operation of these consoles in the following
The fuel oil service system is remotely controlled
paragraphs.
and monitored by the PACC in two parts: (1) fuel
service and (2) propulsion fuel. The fuel service and
PACC
propulsion fuel controls deliver fuel oil at the proper
pressure and temperature to each GTE. The fuel service
The MCS propulsion plant control equipment
system may also be operated locally. The monitoring
consists of two SCUs and the PACC. The PACC is
functions for both parts of the fuel oil service system are
located in the CCS and communicates with the SCUs
continuous y available at both the PACC and the SCU,
through the data multiplex system (DMS). The PACC
but control is available at only one console at a time.
provides all controls and displays necessary to operate
Let's take a look at both parts of this system, starting
MCS equipment in both engine rooms. It also provides
with the fuel service system.