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|  DOE-STD-1183-2004
Supporting Knowledge and/or Skills
a. Discuss the effects and applications of the following factors relevant to criticality safety of
operations:
Mass
Shape
Interaction
Separation
Moderation
Concentration
Volume
Density
Neutron absorbers
Heterogeneity
Enrichment
b. Discuss the influence of the presence of non-fissionable materials mixed with, or in contact
with, fissionable material on nuclear criticality safety.
c. Discuss the concept of contingencies for checking the validity of criticality safety limits.
d. Define the following terms:
Criticality accident
Minimum accident of concern
Process area
e. Discuss the general principles associated with the use of criticality alarm systems including
the following:
Installation
Coverage
Detection
Alarms
Dependability
f.
Describe the use of neutron poisons.
g. Define the following terms:
Burnable poison
Non-burnable poison
Chemical shim
h. Explain the purpose and use of Raschig Rings as a neutron poison.
4. Nuclear safety specialists shall demonstrate a working level knowledge of
terminology used in nuclear safety analysis.
Supporting Knowledge and/or Skills
a. Define the following accident related terms:
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