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Appendix A Materials and Compositions
Up
Guidelines For Preparing Criticality Safety Evaluations at Department of Energy Non-Reactor Nuclear Facilities
Next
Appendix B Typical ANISN/PC Input Listings


DOE-STD-3007-93
Nuclide or
KENO
Atoms/barn-cm or
a,b
Description
Material
Lib. ID.
(Volume Fraction)
Pu-239
94912
4.39875E-05
Pu-239, polyethylene, &
94913
6.22368E-05
water fuel material with
H/Pu = 700
Pu-239
94912
1.74460E-05
Pu-239, polyethylene, &
94913
7.55002E-05
water fuel material with
H/Pu = 800
Pu-239, polyethylene, &
Pu-239
94913
8.10202E-05
water fuel material with
94914
1.59868E-06
H/Pu = 900
Pu-239, polyethylene, &
Pu-239
94913
6.45010E-05
water fuel material with
94914
9.85602E-06
H/Pu = 1000
Pu-239, polyethylene, &
Pu-239
94913
5.09852E-05
water fuel material with
94914
1.66120E-05
H/Pu = 1100
Polyethylene-water reflector
CH2
402
(0.60)
H = 7.43570-2
H2O
502
(0.40)
C = 2.38296-2
O = 1.33488-2
a.
The masses of Pu-239, when represented in ANISN calculations, depends on the radii
of the spheres that are tabulated in Table 3.
b.
Unless specifically stated otherwise, all plutonium bearing compositions were
moderated with 60 vol.% polyethylene (ID = 402) and 40 vol.% water (ID = 502). A
moderator volume fraction of 1.0 was used in all cases.
4-23


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