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|  DOE-STD-1176-2004
6.
Chemical Processing Personnel shall demonstrate a working level knowledge of
safety and relief devices.
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.
7.
Chemical Processing Personnel shall demonstrate working level knowledge of
general piping systems.
Supporting Knowledge and/or Skills
a.
Define the following terms as they relate to piping systems:
Pipe schedule
Water hammer
Hydrostatic test pressure
Laminar flow
Turbulent flow
b.
Discuss the potential hazards to personnel and equipment associated with water
hammer.
c.
Identify and discuss the typical causes of water hammer in piping systems.
9
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