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Typical diesel engine including support systems. |
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|  DOE-STD-1161-2003
f.
Discuss the hazards associated with portable gases such as cylinders of oxygen, nitrogen,
etc.
g.
Using a Piping and Instrumentation Diagram (P&ID) of a typical facility instrument air
system, identify the main components to include:
Compressor
Receivers
Relief valve
Filters
h.
Using a cutaway diagram of a typical multi-stage air compressor, identify its main
components and discuss their purpose and function to include:
Prime mover
High pressure (HP) stage(s)
Low pressure (LP) stage(s)
HP and LP suction and discharge valves
Intercooler
Aftercooler
Cooling medium flow path(s)
Lubrication system/pump
i.
State the purpose of an air compressor unloader and discuss its basic operation.
j.
Compare and contrast the principle of operation for centrifugal and reciprocating
compressors.
15.
Mechanical systems personnel shall demonstrate a working level knowledge of a typical
diesel engine including support systems.
Supporting Knowledge and/or Skills
a.
Differentiate between two-stroke and four-stroke (two-cycle and four-cycle) engines.
b.
Discuss the ignition principle in a diesel engine.
c.
Discuss the purpose and principle of operation of a diesel engine injector.
d.
Discuss the purpose of the following diesel engine support systems:
Cooling water
Lubrication
Fuel oil
Scavenging air
Starting systems
e.
Using a cutaway drawing of a typical diesel engine, identify and discuss the purpose of
the major parts, including:
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