Reactor Theory (Nuclear Parameters)
DOE-HDBK-1019/2-93
REACTIVITY COEFFICIENTS
Reactivity Coefficients Summary (Cont.)
The pressure coefficient of reactivity is the change in reactivity per unit change
in pressure.
The pressure coefficient of reactivity is usually negligible in reactors moderated
by subcooled liquids because the density of the liquid does not change
significantly within the operating pressure range.
The void coefficient of reactivity is the change in reactivity per unit change in
void volume.
The void coefficient of reactivity becomes significant in a reactor in which the
moderator is at or near saturated conditions.
Rev. 0
NP-03
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