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|  DOE-STD-1162-2003
c.
Describe the basic construction and theory of operation of the following switch position
indicators:
Limit switches
Reed switches
d.
Given a basic diagram of a position indicator, discuss the functions of the following:
Detection device
Indicator and control circuit
e.
Describe the environmental concerns that can affect the accuracy and reliability of
position indication instrumentation.
f.
Discuss the failure modes of the various types of position indication instruments.
g.
Discuss the functions and operation of position indication switches in motor operated
valves.
h.
Describe the methods used to test and adjust the position indication switches in motor
operated valves.
9.
Instrumentation and control personnel shall demonstrate a working level knowledge of
radiation detection equipment.
Supporting Knowledge and/or Skills
a.
Describe the operation of a proportional counter. Include the following elements in this
discussion:
Radiation detection
Quenching
Voltage variations
b.
Describe the operation of an ionization chamber. Include the following elements in this
discussion:
Radiation detection
Quenching
Gamma sensitivity reduction
c.
Given a basic diagram of a proportional counter circuit, discuss the functions of the
following:
Proportional counter
Preamplifier/amplifier
Single channel analyzer/discriminator
Scaler
Timer
d.
Describe how a compensated ion chamber compensates for gamma radiation.
e.
Describe the operation of an electroscope ionization chamber.
12
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