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Page Title:
Required Technical Competencies |
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|  DOE-STD-1173-2003
REQUIRED TECHNICAL COMPETENCIES
The competencies contained in this Standard are distinct from those competencies contained in
the General Technical Base Qualification Standard. All criticality safety personnel must satisfy
the competency requirements of the General Technical Base Qualification Standard prior to or in
parallel with the competency requirements contained in this Standard. Each of the competency
statements defines the level of expected knowledge and or skill that an individual must posses to
meet the intent of this Standard. The supporting knowledge and/or skill statements further
describe the intent of the competency statements.
Note: When regulations or Department of Energy directives or other industry standards are
referenced in the Qualification Standard, the most recent revision should be used.
1.
Criticality safety personnel shall demonstrate a working level knowledge of the
fission process.
Supporting Knowledge and/or Skills
a.
Define the following terms:
Excitation energy
Cross Section
Fissile material
Fissionable material
Fertile material
b.
Sketch the fission cross section for both U-235 and Pu-239 as a function of
neutron energy. Label each significant energy region and explain the implications
of the shape of the curves for criticality safety.
c.
Explain why only the heaviest nuclei are easily fissioned.
d.
Explain why uranium-235 fissions with thermal neutrons and uranium-238
fissions only with fast neutrons.
e.
Characterize the fission products in terms of mass groupings and radioactivity.
f.
Define sub-critical, critical, super-critical, reproduction factor, prompt
neutron fraction, and delayed neutron fraction.
g.
Discuss isotopes other than U-235 and Pu-239 that are fissionable.
2.
Criticality safety personnel shall demonstrate a working level knowledge of the
various types of radiation interaction with matter.
Supporting Knowledge and/or Skills
a.
Describe the interactions of the following with matter:
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