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DOE-STD-1161-2003
Supporting Knowledge and/or Skills
a.
Define the following terms as they pertain to safety and relief valves:
Set point
Accumulation
Blowdown
Weep
Pilot-actuated
Gagging device
b.
Compare and contrast the purpose and operation of safety and relief valves.
c.
Discuss how blowdown and accumulation are controlled in safety and relief valves.
d.
Using a cutaway drawing of a safety valve, identify the main components to include:
Seat
Disc
Blowdown ring
Main spring
Set-point adjustment mechanism
e.
Discuss the methods used to test relief valves.
f.
Discuss the application of Rupture Discs.
11.
Mechanical systems personnel shall demonstrate a working level knowledge of pump theory
and operation.
Supporting Knowledge and/or Skills
a.
Define the following terms as they relate to pumps:
Head
Net positive suction head
Shut-off head
Run-out
Centrifugal pump
Positive displacement pump
b.
Describe the general principle of operation for centrifugal pumps.
c.
Describe the general principle of operation for positive displacement pumps.
d.
Using a cutaway drawing of a centrifugal pump, identify the following components and
discuss their purpose:
Impeller
Packing or mechanical seal
11


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