Gas-Cooled Reactor Project Semiannual Progress Report: September 1963 Page: 13
xxxiii, 462 p. : ill. ; 28 cm.View a full description of this report.
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13
Table 1.8. Multiplication of Full Core
with 1 atm of Air When Various Rods
Are Fully Withdrawn
Rods keff
Withdrawn keff Per Rod
Withdrawn
None 0.8881
All rods 1.1419 0.0121
NGOTM 0.9958 0.0215
NGOTM FHUS 1.0593 0.0190
FHUS 0.9412 0.01:33
CPXL 0.9445 0.0141
FHUS CPXL 0.9877 0.0124
FHUS CX 0.9699 0.0136
EJVR CX 0.9625 0.0124
EJVR CPXL 1.0020 0.0142
EJVR CPXL BDYW 1.0341 0.0122
DY 0.9261 0.0190
CX 0.9275 0.0197
HU 0.9233 0.0176
GT 0.9195 0.0157
N 0.9046 0.0164
FS 0.9225 0.0172six rods are withdrawn if five of them are NGOTM. Otherwise, seven to
eight rods must be withdrawn for criticality. It is worth noting that
the uncertainty in the calculation is Ak N 0.015 to 0.020, since the un-
certainty in the PCTR measurement of rod worth alone was LK = +0.013.
A Study of the Prompt Neutron Lifetime in a
Partially Loaded CoreC. A. Preskitt
J. I. Paulk
If the neutron flux in a reactor is rising or falling exponentially
with an inverse-period w, which is large compared with the decay constants
of all delayed-neutron precursors, the inhour equation may be written asP = Leff + Peff (
(4)
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Oak Ridge National Laboratory. Gas-Cooled Reactor Project Semiannual Progress Report: September 1963, report, January 29, 1964; Oak Ridge, Tennessee. (https://digital.library.unt.edu/ark:/67531/metadc100339/m1/49/: accessed April 23, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.