Reactor Theory (Nuclear Parameters)
DOE-HDBK-1019/2-93
CONTROL RODS
The following exercises are intended to reinforce an understanding of the concepts of integral
and differential rod worth.
Example 1:
Using the integral rod worth curve provided in Figure 11, find the reactivity inserted by
moving the rod from 12 inches withdrawn out to 18 inches withdrawn.
Figure 11 Rod Worth Curves for Example Problems
Solution:
The integral rod worth at 12 inches is 40 pcm and the integral rod worth at 18 inches is
80 pcm.
D r rfinal rinitial
r18 r12
80 pcm 40 pcm
40 pcm
Rev. 0
NP-03
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