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H2O-moderated uranium metal lattices-UME-LW (CRITUME)


1.01) UME-LW-BAPL-TRX

H2O-moderated uranium critical metal lattices

Laboratory: BAPL Bettis Atomic Power Laboratory, Westinghouse (USA)

Facility: TRX

These benchmarks consist of two H2O moderated lattices of slightly
enriched uranium metal rods in a triangular pattern. Material bucklings
and several spectral indexes were measured.

Enrichment (%)

1.3

Pitch (cm)

trx_um1: 1.8060
trx_um2: 2.1740

Lattice geometry

Hexagonal

Water/Fuel volume ratio

trx_um1: 2.35
trx_um2: 4.02

Moderator

H2O

Fuel material

U-met (1.3 w% enrichment)

Fuel Isotopic Concentration (atoms/barn.cm3)

U-235: 0.0006253
U-238: 0.047205

Radius of fuel rods (cm)

0.4915

Clad material

Al

Clad Isotopic Concentration (atoms/barn.cm3)

Al: 0.06025

Outer radius of clad (cm)

0.5753

Thickness of clad (cm)

0.0711

Temperature (K)

293.0

Experimental buckling
(1/cm2)

trx_um1: 0.005700 0.0001
trx_um2: 0.005469 0.000036

References

[1] HARDY, J., KLEIN, D., VOLPE, J.J., A Study of Physics parameters in Several Water-
Moderated Lattices of Slightly Enriched and Natural Uranium, WAPD-TM-931, March1970.

[2] HARDY, J., KLEIN, D., VOLPE, J.J., Nucl.Sci.Eng.,40,101 (1970).

[3] VOLPE, J.J., HARDY, J., KLEIN, D., Nucl.Sci.Eng.,40,116 (1970).

[4] HARDY, J., KLEIN, DANNELS, R., Nucl.Sci.Eng.,26,462 (1966).

[5] BROWN J.R., HARRIS D.R. et al., Kinetics and Buckling Measurements on Lattices of
Slightly Enriched Uranium and UO2 Rods in light Water, WAPD-176, January 1958.

[6] SHER R., FIARMAN S., Studies of Thermal Reactor Benchmark Data Interpretation:
Experimental Corrections, EPRI-NP-209, Octuber 1976.


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1.02)        UME-LW-AECL-AECLea

H2O-moderated uranium metal lattice (exponential experiment)

Laboratory: AECL Atomic Energy of Canada Limited (Canada)

This benchmark is an exponential experiment with H2O moderated lattice
of uranium metal rods (0.714 w% U235) in a square pattern. Material
buckling was measured.

U-5 enrinchment (%)

0.714

Pitch (cm)

5.359

Lattice geometry

Square

Water/fuel volume ratio

2.305

Moderator

H2O

Fuel material

U-met

Fuel Density (g/cm3)

18.95

Radius of fuel rods (cm)

1.6255

Clad material

Al

Clad Density (g/cm3)

2.6999

Outer radius of clad (cm)

1.7475

Thickness of clad (cm)

0.102

Temperature (K)

293.0

Experimental buckling (1/cm2)

-0.00193 0.00008

References

[1] HELLENS, R.L., PRICE, G.A., Reactor Physics Data for Water-Moderated Lattices of
Slightly Enriched Uranium Reactor Technology Selected Reviews, 529, 1964.

[2] JARVIS, R.G., et al., Some Close-packed Lattices in Light Water and Heavy Water.
P
art 1. Buckling Measurements, AECL-1254, 1961.

[3] WALKER, W.H., JARVIS, R.G., Some Close-packed Lattices in Light Water and Heavy
Water. Spectrum and Fine Structure Measurements, AECL-1652, 1962.

[4] BERNOCCHI, E., MARTINELLI, R., (editors), Light Water Lattice Data, page 121,
row 11, Comitato Nazionale per LEnergia Nucleare, Dipartamento Ricerca Tecnologica
di Base ed Avanzata, Quaderno RIT/FIS(77)1,NEACRP-U-190 (1977).


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1.03) UME-LW-AERE-AEREea

H2O-moderated uranium metal lattices (exponential experiments)

Laboratory: AERE Atomic Energy Research Establishment, Harwell (UK)

These benchmarks consist of seven exponential experiments with H2O
moderated lattices of enriched uranium metal rods. Two different enriched
fuels were used: 0.928 and 1.142 w% in square patterns.
Material bucklings were measured.

Enrichment (%)

aere_uma1-5
aere_umb2

0.928
1.142

Pitch (cm)

aere_uma1
aere_uma2
aere_uma3,umb1
aere_uma4,5
aere_umb2

2.388
3.810
4.267
4.699
4.750

Lattice geometry

Square

Water/fuel volume ratio

aere_uma1
aere_uma2
aere_uma3
aere_umb1
aere_uma4,5
aere_umb2

0.848
0.896

1.402

1.407

1.931

1.937

Moderator

H2O

Fuel material U-met
Fuel Density (g/cm3)
aere_uma1
aere_uma2-5

aere_umb
18.80
18.67

18.72
Radius of fuel rods (cm)
aere_uma1
aere_uma2-5;umb
0.9525
1.5240
Clad material aere_uma1,3,4;umb
aere_uma2,5
Al
Stainless steel
Clad Density (g/cm3) aere_uma1,3,4;umb
aere_uma2,5
2.6999
7.806
Outer radius of clad (cm) aere_uma1
aere_uma2-5;umb
1.0225
1.556
Thickness of clad (cm) aere_uma1
aere_uma2,5
aere_uma3,4;umb
0.053
0.048
0.051
Temperature (K) 293.0
Experimental buckling
(1/cm2)
aere_uma1
aere_uma2
aere_uma3
aere_uma4
aere_uma5
aere_umb1
aere_umb2
-0.00061 0.00023
-0.00020 0.00019
0.00241 0.00012
0.00219 0.0001
0.00087 0.0001
0.00448 0.00026
0.00436 0.0001

References

[1] HELLENS, R.L., PRICE, G.A., Reactor Physics Data for Water-Moderated Lattices
of
Slightly Enriched Uranium Reactor Technology Selected Reviews, 529, 1964.

[2] DAVEY, W.G., SMITH, K.R.E., Exponential Experiments with Enriched Uranium-Natural
Water Systems, AERE-RP/R-1788, 1955.

[3] BERNOCCHI, E., MARTINELLI, R., (editors), Light Water Lattice Data, (page 121,
rows 13,17-20), (page 123, row 24), (page 124, row 1),page 121, row 11, Comitato Nazionale
per LEnergia Nucleare, Dipartamento Ricerca Tecnologica di Base
ed Avanzata, Quaderno
RIT/FIS(77)1,NEACRP-U-190 (1977).


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1.04) UME-LW-BNLea

H2O-moderated uranium metal lattices (exponential experiments)

Laboratory: BNL Brookhaven National laboratory (USA)

Facility: BNL Exponential Assemblies

These benchmarks consist of 32 exponential experiments with H2O moderated lattices of
enriched uranium metal rods. Four different enriched fuels were used: 1.016, 1.027, 1.143
and 1.299 w% in hexagonal patterns. Material bucklings were measured.

U-5 enrichment, % bnl_uma1-7
bnl_umb1-16
bnl_umc1-2
bnl_umd1-7
1.016
1.027
1.143
1.299
Pitch (cm) bnl-umb1
bnl-uma1,umb2
bnl-uma2,umb3
bnl-uma3,b4,c1
bnl-uma4,umb5
bnl-umd1
bnl-umb6,umd2
bnl-uma5,b7,d3
bnl-umd4
bnl-uma6,umb9
bnl-umb8,umd5
bnl-umc2
bnl-umb10
bnl-umb13
bnl-umb11,umd6
bnl-uma7,b12,d7
bnl-umb14
bnl-umb15
bnl-umb16
1.064
1.147
1.297
1.431
1.586
1.589
1.719
1.957
1.961
2.168
2.170
2.399
2.609
2.868
2.985
3.320
3.393
3.628
4.058
Lattice geometry Hexagonal
Water/Fuel volume ratio bnl-uma6,umb9
bnl-umb13
bnl-uma4;umb1,5;umc1;umd1
bnl-uma1;umb2,6,10;umd2
bnl-umb14
bnl-umb15
bnl-uma2,5;umb3,7,11;umd3,6
bnl-umd4
bnl-umb16
bnl-uma3,7;b4,8,12;c1;d5,7
1.000
1.334
1.500
2.000
2.334
2.834
3.000
3.018
3.834
4.000
Moderator H2O
Fuel material U-met
Fuel Density (g/cm3) 18.90
Radius of fuel rods (cm) bnl-uma1-3;b1-4;c1
bnl-uma4,5;b5-8;d1-5
bnl-uma6,7;b9-12;c2;d6,7
bnl-umb13-16
0.3175
0.4915
0.762
0.9525
Clad material Al
Clad Density (g/cm3) 2.6999
Outer radius of clad (cm) bnl-uma1-3;b1-4;c1
bnl-uma4,5;b5-8;d1-5
bnl-uma6,7;b9-12;c2;d6,7
bnl-umb13-16
0.4015
0.5755
0.846
1.0285
Thickness of clad (cm) bnl-uma1-3;b1-4;c1
bnl-uma4,7;b5-12;c2;d1-7
bnl-umb13-16
0.079
0.071
0.076
Temperature (K) 293.0
Experimental buckling
(1/cm2)
bnl_uma1
bnl_uma2
bnl_uma3
bnl_uma4
bnl_uma5
bnl_uma6
bnl_uma7
bnl_umb1
bnl_umb2
bnl_umb3
bnl_umb4
bnl_umb5
bnl_umb6
bnl_umb7
bnl_umb8
bnl_umb9
bnl_umb10
bnl_umb11
bnl_umb12
bnl_umb13
bnl_umb14
bnl_umb15
bnl_umb16
bnl_umc1
bnl_umc2
bnl_umd1
bnl_umd2
bnl_umd3
bnl_umd4
bnl_umd5
bnl_umd6
bnl_umd7
0.001995 0.000047
0.002435 0.000019
0.002034 0.000043
0.001970 0.000034
0.003139 0.000019
0.000990 0.000054
0.002096 0.000026
0.001214 0.000103
0.001995 0.000047
0.002515 0.000027
0.002207 0.000021
0.001970 0.000034
0.002902 0.000034
0.003139 0.000019
0.002568 0.000024
0.000990 0.000054
0.003607 0.000039
0.003315 0.000031
0.002096 0.000026
0.00289 0.00005
0.003673 0.000048
0.003335 0.000113
0.00186 0.00006
0.003605 0.000019
0.003873 0.000082
0.004051 0.000030
0.005219 0.000036
0.005925 0.000033
0.00582 0.00010
0.005469 0.000036
0.006099 0.000026
0.005038 0.000027

References

[1] HELLENS, R.L., PRICE, G.A., Reactor Physics Data for Water-Moderated Lattices of Slightly
Enriched Uranium Reactor Technology Selected Reviews, 529, 1964.

[2] PRICE, G.A., Uranium-Water Lattice Compilation Part I, BNL Exponential Assemblies,USAEC
Report BNL 50035 (T-449) (Reactor Technology-4500), Brookhaven National Laboratory (1966).

[3] KOUTS, H. et al., Physics of Slightly Enriched, Normal Watter lattices, in Proceedings of the
Second United Nations International Conference on the Peaceful Uses of Atomic Energy, Geneva,
1958, Vol.12,pp.446-482, United nations, New York, 1958.

[4] KOUTS, H., SHER, R., Experimental Studies of Slightly Enriched Uranium Moderated lattices.
Part 1, USAEC Report BNL-486, Brookhaven national Laboratory, 1957.

[5] KOUTS, H. et al., Exponential Experiments on Light Water Moderated One Per Cent U-235 Lattices,
USAEC Report BNL-2094, Brookhaven national Laboratory, 1952.

[6] BERNOCCHI, E., MARTINELLI, R., (editors), Light Water Lattice Data, (p.122, rows 14-16,18,20,22),
(p.123, rows 2-6,8-12,14-17,20-22), (p.124, rows 5,12,17,18,20-22), (p.125, rows 3,4), Comitato Nazionale
per LEnergia Nucleare, Dipartamento Ricerca Tecnologica di Base ed Avanzata, Quaderno RIT/FIS(77)1,
NEACRP-U-190 (1977).


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1.05) UME-LW-HW-Hwea

H2O-moderated uranium metal lattices (exponential experiments)

Laboratory:HW Hanford Works, Richland (USA)

These benchmarks consist of 15 exponential experiments with H2O moderated lattices
of enriched uranium metal rods.Three different enriched fuels were used: 0.95, 1.007
and 1.44 w% in hexagonal patterns. Material bucklings were measured.

General Data

U-5 enrichment (%) hw_uma1-4
hw_umb1-6
hw_umc1-5
0.950
1.007
1.440
Pitch (cm) hw-umb1
hw-umb2
hw-umb3
hw-uma1,umc1
hw-uma2,umc2
hw-uma3,b4,c3
hw-uma4,umc4
hw-umb5
hw-umc5
hw-umb6
3.556
3.937
4.064
5.080
5.334
5.588
6.096
6.223
6.604
6.858
Lattice geometry Hexagonal
Water/Fuel volume ratio hw-umb4
hw-uma1
hw-umc1
hw-umb5
hw-umb1
hw-uma2
hw-umc2
hw-uma3
hw-umc3
hw-umb6
hw-umb2
hw-umb3
hw-uma4
hw-umc4
hw-umc5
0.86
1.20
1.21
1.33
1.37
1.46
1.46
1.72
1.73
1.85
1.94
2.15
2.28
2.30
2.92
Moderator H2O
Fuel material U-met
Fuel Density (g/cm3) hw-uma,umc
hw-umb
18.90
18.99
Radius of fuel rods (cm) hw-umb1-3
hw-uma,umc
hw-umb4-6
1.1750
1.6965
2.1080
Clad material Al
Clad Density (g/cm3) 2.6999
Outer radius of clad (cm) hw-umb1-3
hw-uma,umc
hw-umb4-6
1.270
1.905
2.191
Thickness of clad (cm) hw-umb4-6
hw-umb1-3
hw-uma,umc
0.071
0.089
0.124
Temperature (K) 293.0
Experimental buckling
(1/cm2)
hw-uma1
hw-uma2
hw-uma3
hw-uma4
hw-umb1
hw-umb2
hw-umb3
hw-umb4
hw-umb5
hw-umb6
hw-umc1
hw-umc2
hw-umc3
hw-umc4
hw-umc5
0.001924 0.000040
0.002257 0.000032
0.002115 0.000022
0.001474 0.000034
0.002903 0.000016
0.003357 0.000025
0.003012 0.000021
0.001639 0.000036
0.002747 0.000007
0.002205 0.000011
0.005294 0.000021
0.005678 0.000027
0.005774 0.000003
0.005115 0.000005
0.003818 0.000010

References

[1] HELLENS, R.L., PRICE, G.A., Reactor Physics Data for Water-Moderated Lattices
of
Slightly Enriched Uranium Reactor Technology Selected Reviews, 529, 1964.

[2] KETZLACH, N., LLOYD, R.C., Nuclear Safety of Iron Encased Fuel Elements Nuclear
Physics Research Quarterly Report for April-June 1958, USAEC Report HW-56919, p.27,
Hanford Atomic Products Operation, 1958.

[3] KETZLACH, N., Nuclear Safety of Iron Encased Fuel Elements, USAEC Report
HW-56423, Hanford Atomic Products Operation, 1958.

[4] LLOYD, R.C., Summary Listing of Subcritical Measurements of Heterogeneous
Water-
Uranium Lattices Made at Hanford, USAEC Report HW-65552, Hanford Atomic
Products Operation, 1960.

[5] LLOYD, R.C., Buckling Measurements of Fuel Elements in a Random Array, Water
Moderated Nuclear Physics Research Quarterly Report for Octuber-December 1957, USAEC
Report HW-54591, p.35, Hanford Atomic Products Operation, 1958.

[6] BENNET, R.A., BLOCK, E.Z., Reflector Savings of One Per Cent Enriched Uranyl
Nitrate Nuclear Physics Research Quarterly Report for Octuber-December 1957,
USAEC Report HW-54591, p.43, Hanford Atomic Products Operation, 1958.

[7] CLAYTON, E.D., Exponential Pile Measurements in Water Moderated Lattices with
Enriched Uranium Rods, USAEC Report HW-40930, Hanford Atomic Products Operation, 1956.

[8] CLAYTON, E.D., Water Moderated Lattices with Enriched Uranium Rods Nuclear
Physics Research Quarterly Report for Octuber-December 1955, USAEC Report
HW-42182, p.43, Hanford Atomic Products Operation, 1956.

[9] LLOYD, R.C., Exponential Experiments with Poisoned Moderator Nuclear Physics
Research Quarterly Report for July-September 1959, USAEC Report HW-62727, p.61,
Hanford Atomic Products Operation, 1959.

[10] BLOCK, E.Z., CLAYTON, E.D., Buckling Measurements with Enriched Fuel Elements in
Light Water Nuclear Physics Research Quarterly Report for July-September 1956, USAEC Report
HW-47012, p.12, Hanford Atomic Products Operation, 1956.

[11] BERNOCCHI, E., MARTINELLI, R., (editors), Light Water Lattice Data, (p.121, rows 22,24,26),
(p.122, rows 2,4,6,8-12), (p.125, rows 5-9), Comitato Nazionale per LEnergia Nucleare, Dipartamento
Ricerca Tecnologica di Base ed Avanzata, Quaderno RIT/FIS(77)1, NEACRP-U-190 (1977).


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1.06) UME-LW-SRL-SRLea

H2O-moderated uranium metal lattices (exponential experiments)

Laboratory: SRL Savannah River Laboratory (USA)

These benchmarks consist of seven exponential experiments with H2O moderated
lattices of 3 w% enriched uranium metal rods in square patterns. Material bucklings
were measured.

Enrichment (%) 3.0 %
Pitch (cm) srl_um1
srl_um2
srl_um3
srl_um4
srl_um5
srl_um6
srl_um7
6.350
6.985
7.620
8.255
8.890
9.525
10.160
Lattice geometry Square
Water/fuel volume ratio srl_um1
srl_um2
srl_um3
srl_um4
srl_um5
srl_um6
srl_um7
0.990
1.430
1.870
0.496
0.738
0.990
1.270
Moderator H2O
Fuel material U-met
Fuel Density (g/cm3) 18.9
Radius of fuel rods (cm) srl-um1-3
srl-um4-7
2.54 3.81
Clad material None
Temperature (all components)(K) 293.0
Experimental buckling B2 (cm-2) srl_um1
srl_um2
srl_um3
srl_um4
srl_um5
srl_um6
srl_um7
0.01020 0.00011
0.01091 0.00011
0.01024 0.00011
0.00709 0.00011
0.00879 0.00011
0.00964 0.00011
0.00910 0.00011

References

[1] ROGERS, W.B., KINARD, F.E., Material Buckling and Critical Masses of
Uranium Rods
Containing 3 w% U-235 in H2O, Nucl.Sci.and Eng.,20,266 (1964).

[2] BERNOCCHI, E., MARTINELLI, R., (editors), Light Water Lattice Data,
(p.125, rows
23,24), (p.125, rows 1,6-10), Comitato Nazionale per LEnergia Nucleare,
Dipartamento Ricerca Tecnologica di Base ed Avanzata, Quaderno RIT/FIS(77)1,
NEACRP-U-190(1977).


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