Measurement, data collection, and analysis.

DOE-STD-1176-2004

Using a drawing of a valve, identify which of the following general types of valve

it is and, describe its normal design application in a piping system:

Gate

Globe

Ball

Check

Butterfly

Regulating/reducing

Discuss why the design of a globe valve enables it to throttle fluids efficiently.

Using a diagram of a globe valve body showing the bridgewall mark, identify how

the valve must be oriented in the system related to flow.

Discuss why gate valves, ball valves, and butterfly valves should never be used

to throttle flow.

Discuss how cavitation occurs in valves and state any harmful effects that can

result from cavitation.

Describe the construction and principle of operation for the following types of

valve actuators:

Manual

Electric

Pneumatic

Hydraulic

Describe the principles of operation and applications for modulating and pressure

reducing valves.

10.

Chemical processing personnel shall demonstrate a working level knowledge of

measurement, data collection, and analysis.

Supporting Knowledge and/or Skills

Discuss the types of instrumentation and the principles of operation for

measuring chemical process parameters (e.g., pressure, temperature, flow) to

include:

Resistance Temperature Detector (RTD)

Thermocouple

Differential pressure detector

Pitot tube

Thermocouple

Bourdon tube pressure gauge

Duplex pressure gauge

Manometer

Mechanical flow meters