1.
Continuous change of fuel geometry changes power levels
2.
Criticality effectively unpredictable due to nature of use
3.
Prompt criticality
Experimental nature of work in research and tests creates new
situations on a continuing basis
Location
1.
2.
Location of reactor depends on many factors
a.
Reactors located in populous areas
b.
Reactors located at isolated sites
Location of critical facilities
Potential radiation hazards from research and test reactors and
critical facilities
1.
Radiation from experimental beam holes for experiments outside
reactor or from beam holes accidentally uncovered
a.
Ionizing radiation
b.
Neutrons from reactor core
(1)
Fast
(2)
Slow
(3)
Different methods required for handling fast and slow
neutrons
2.
Radioactivity from experimental materials taken from reactor
3.
Catastrophe incidents
4,
Prompt criticality
5.
Fuel storage areas
ll -2
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