WIMS Library Update Project

H2O-moderated uranium oxide critical lattices (UO2-LW/CRITUO2)

2.01) UO2-LW-BAPL-TRX

H2O-moderated uranium oxide critical lattices

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

Facility: TRX

These benchmarks are three standard (BAPL/1-3) and three additional (BAPL/4-6)
cases of H2O moderated lattices with slightly enriched uranium oxide rods in a
triangular pattern. Material bucklings and several spectral indexes were measured.

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

[3] BERNOCCHI, E., MARTINELLI, R., (editors), Light Water Lattice Data, pages 7-9,
Comitato Nazionale per LEnergia Nucleare, Dipartamento Ricerca Tecnologica di Base
ed Avanzata, Quaderno RIT/FIS(77)1,NEACRP-U-190 (1977).

2.02) UO2-LW-AEEW-DIMPLE

H2O-moderated uranium oxide lattices enriched to 3.003 w% in U-235

Laboratory: AEEW Atomic Energy Establishment, Winfrith (UK)

Facility: DIMPLE

These benchmarks are three H2O moderated lattices of UO2 fuel rods clad in
stainless steel and enriched to 3.003 wt.% in U-235, arranged in square patterns.
The gap between the clad and fuel region contained an aluminum wrapper for
the fuel. Material bucklings were measured. d²⁸ and RCR (spectral indexes) were
measured also for R1/100H and R3/100H.

References

[1] BROWN, W.A.V., FOX, W.N., SKILLINGS, D.J., GEORGE, C.F., BURHOLT, G.D.,
Measurements of Material Buckling and Detailed Reaction Rates in a Series of Low
Enrichment UO2 Fuelled Cores Moderated by Light Water, UKAEA Report AEEW-R502 (1967).

2.03) UO2-LW-NAIG-NCA

H2O-moderated uranium oxide critical lattice

Laboratory: NAIG Nippon Atomic Industries Group (Japan)

Facility: NCA

This benchmark is an H2O moderated lattice of 2.02 w% enriched uranium oxide rods
in a square pattern. Material buckling was measured.

References

[1] MIZUTA, H., MAKINO, K., Few Group Diffusion Calculations of a Light Water
Moderated lattice, J.Nucl.Sci.Technol.,8,4,201 (1971).

[2] BERNOCCHI, E., MARTINELLI, R. (editors), Light Water Lattice Data, page 13,
Comitato Nazionale per LEnergia Nucleare, Dipartamento Ricerca Tecnologica di Base
ed Avanzata, Quaderno RIT/FIS(77)1,NEACRP-U-190 (1977).

2.04) UO2-LW-CURL-ZPR

H2O-moderated uranium oxide critical lattices

Laboratory: CURL Cornell University Nuclear Reactor Laboratory (USA)

Facility: ZPR

These benchmarks are four H2O moderated lattices of 2.07 w% enriched uranium oxide
rods in a triangular pattern. Material bucklings were measured. d²⁸ was measured for
CURL_ZPR3 only.

References

[1] BERG, S.S., Initial Experiments on the Cornell University Zero Power Reactor Cores
CURL-7, Cornell University Nuclear Reactor Laboratory (1964).

[2] FEHR, E.B., BRYCE, D.H., Reactivity Values in Central Water and Air in the ZPR
RM-17, Cornell University Nuclear Reactor Laboratory (1964).

[3] WYNN, W.P., Experimental Determination of the Isothermal Temperature Coefficients of
Reactivity and Temperature Dependent Disadvantage Factors of the Cornell University
ZPR CURL-11, Cornell University Nuclear Reactor Laboratory (1964).

[4] OSIAS, D.J., Investigation of Space Dependent Fast Fission Ratios and Measurements of
Fission Fragment Recoil Ranges in Aluminium, CURL-23, Cornell University Nuclear Reactor
Laboratory (1967).

[5] BERNOCCHI, E., MARTINELLI, R. (editors), Light Water Lattice Data, pages 14,16-18
Comitato Nazionale per LEnergia Nucleare, Dipartamento Ricerca Tecnologica di Base
ed Avanzata, Quaderno RIT/FIS(77)1,NEACRP-U-190 (1977).

2.05)UO2-LW-BAW-BAY2

H2O-moderated uranium oxide critical lattices

Laboratory: BAW Babcock & Wilcox Company (USA)

Facility: BAY-2

These benchmarks are three H2O moderated lattices of enriched uranium oxide rods
in a square pattern. Material bucklings and r²⁸ were measured.

References

[1] ENGELDER, T.C. et al., Measurements and Analysis of Uniform Lattices of Slightly
Enriched UO2 Moderated by D2O-H2O Mixtures, USAEC Report BAW-3647-3, The
Babcock & Wilson Company, Virginia (1967).

[2] BARRET, L.G. et al.,Exponential Experiments at Elevated Temperatures on Lattices
Moderated by D2O-H2O Mixtures, USAEC Report BAW-1233, The Babcock&Wilson Company,
Virginia (1962).

[3] BERNOCCHI, E., MARTINELLI, R. (editors), Light Water Lattice Data, pages 20,75,76
Comitato Nazionale per LEnergia Nucleare, Dipartamento Ricerca Tecnologica di Base
ed Avanzata, Quaderno RIT/FIS(77)1,NEACRP-U-190 (1977).

2.06) UO2-LW-BAW-CX10

H2O-moderated uranium oxide critical lattice

Laboratory: BAW Babcock & Wilcox Company (USA)

Facility: CX-10

This benchmark is an H2O moderated lattice of 2.459 w% enriched uranium oxide
rods in a square pattern. Material buckling and r²⁸ were measured.

References

[1] CLARK, R.H. et al., Lumped Burnable Poison Program - Final Report USAEC Report
BAW-3492-1, The Babcock & Wilson Company, Virginia (1966).

[2] CLARK, R.H. et al., Physics Verification Program Part III, Tasks 2 and 3 Final Report
USAEC Report BAW-3647-3, The Babcock & Wilson Company, Virginia (1967).

[3] BALDWIN, M.N. et al., Physics Verification Program - Part II, Final Report USAEC
Report BAW-3647-7, The Babcock & Wilson Company, Virginia (1968).

[4] BALDWIN, M.N. et al., Physics Verification Program Part III, Tasks 2 and 3 Final Report
USAEC Report BAW-3647-16, The Babcock & Wilson Company, Virginia (1970).

[5] BALDWIN, M.N., STERN, M.E., Physics Verification Program - Part III, Task 4,
Summary Report USAEC Report BAW-3647-20, The Babcock & Wilson Company, Virginia (1971).

[6] BERNOCCHI, E., MARTINELLI, R. (editors), Light Water Lattice Data, page 21,
Comitato Nazionale per LEnergia Nucleare, Dipartamento Ricerca Tecnologica di Base
ed Avanzata, Quaderno RIT/FIS(77)1,NEACRP-U-190 (1977).

2.07) UO2-LW-AERL-OCF

H2O-moderated uranium oxide critical lattices

Laboratory: AERL Atomic Energy Research Laboratory, Ozeny (Japan)

Facility: OCF

These benchmarks are two H2O moderated lattices of 2.49 w% enriched uranium oxide
rods in a square pattern. Material bucklings, r²⁸ and d²⁸ were measured.

References

[1] WAJIMA, J.T. et al., Experimental Studies of UO2-H2O Uniform Lattices,
J.Nucl.Sci.Technol.,8,4,201 (1971).

[2] WAJIMA, J.T., YAMAMOTO, K., Temperature Coefficient of Water Lattices,
J.Nucl.Sci.Technol.,2,9,331 (1965).

[3] BERNOCCHI, E., MARTINELLI, R. (editors), Light Water Lattice Data, pages 25,26,
Comitato Nazionale per LEnergia Nucleare, Dipartamento Ricerca Tecnologica di Base
ed Avanzata, Quaderno RIT/FIS(77)1,NEACRP-U-190 (1977).

2.08) UO2-LW-JAERI-TCA

H2O-moderated uranium oxide critical lattices

Laboratory: JAERI Japan Atomic Energy Research Institute,
Tokai Research Establishment (Japan)

Facility: TCA Tank type Critical Assembly

These benchmarks are seven H2O moderated lattices ofenriched uranium oxide rods
in square patterns. Material bucklings were measured.

References

[1] TSURUTA, H. et al., Critical Sizes of Light-Water Moderated UO2 and PuO2-UO2
Lattices, JAERI-Memo 6568, Japan Atomic Energy Research Institute (1976).

[2] KOBAYASHI, I., HAYATA, K., JAERI-Memo 2861, Japan Atomic Energy Research
Institute (1967).

[3] BERNOCCHI, E., MARTINELLI, R. (editors), Light Water Lattice Data, pages 27-29,
Comitato Nazionale per LEnergia Nucleare, Dipartamento Ricerca Tecnologica di Base
ed Avanzata, Quaderno RIT/FIS(77)1,NEACRP-U-190 (1977).

[4] NUCLEAR ENERGY AGENCY, CRITICAL ARRAYS OF LOW-ENRICHED UO2
FUEL RODS WITH WATER-TO-FUEL VOLUME RATIOS RANGING FROM 1.5 TO
3.0, NEA/NSC/DOC/(95)03/IV, Volume IV, LEU-COMP-THERM-006, Nuclear Science
Committee, International Handbook of Evaluated Criticality Safety Benchmark
Experiments, September 2001 Edition, Nuclear Energy Agency, OECD (2001).

2.09) UO2-LW-WAPD-CRX

H2O-moderated uranium oxide critical lattices

Laboratory: WAPD Westinghouse Atomic Power Department (USA)

Facility: CRX

These benchmarks are twelve H2O moderated lattices of enriched (from 2.7 w% to 5.74 w%)
uranium oxide rods in square patterns. Material bucklings and several spectral indexes
were measured.

Refereences

[1] HELLENS, R.L., PRICE, G.A., Reactor Physics Data for Water Moderated Lattices of
Slightly Enriched Uranium Reactor Technology, Selected Reviews - 1964, USAEC-TID
8540, pp.529-609 (1964).

[2] DAVISON, P.W. et al., Yankee Critical Experiments-Measurements on Lattices of
Stainless Steel Clad Slightly Enriched Uranium Dioxide Fuel Rods in Light Water
USAEC Report YAEC-94, Westignhouse Electric Corporation, Atomic Power
Department (1959).

[3] EICH, W.J., KOVACK, W.P., Reactivity and Neutron Flux Distribution Studies in Multi-
Region Loaded Reactor Cores, USAEC Report WCAP-1433, Westignhouse Electric
Corporation, Atomic Power Department (1959).

[4] DAVISON, P.W. et al., Multi-Region Reactor Lattice Studies, Microscopic Lattice

Parameters in Single and Multi-Region Cores: A Comparison of Theory and Experiment,
USAEC Report WCAP-1434, Westignhouse Electric Corporation, Atomic Power
Department (1961).

[5] GROB, V.E. et al., Measurements of Parameters Leading to P28, f and eta in Light Water
Moderated 4.48% and 2.73% Enriched Lattices, Nucl.Sci.and Eng.,7,514 (1960).

[6] GROB, V.E. et al., Multi-Region Reactor Lattice Studies, Results of Critical Experiments
in Loose Lattices of UO2 Rods in H2O, USAEC Report WCAP-1412, Westignhouse
Electric Corporation, Atomic Power Department (1960).

[7] DAVISON, P.W. et al., Two-Region Critical Experiments with Water Moderated Slightly
Enriched UO2 Lattices, USAEC Report YAEC-142, Westignhouse Electric Corporation,
Atomic Power Department (1959).

[8] GROB, V.E. et al., Measurements of Parameters Leading to P, f and eta in a Water
Moderated 4.4% Enriched UO2 Lattices, USAEC Report WCAP-1175, Westignhouse
Electric Corporation, Atomic Power Department (1959).

[9] BERNOCCHI, E., MARTINELLI, R. (editors), Light Water Lattice Data, pages 35-39,
42,71,72,78,83-85, Comitato Nazionale per LEnergia Nucleare, Dipartamento Ricerca
Tecnologica di Base ed Avanzata, Quaderno RIT/FIS(77)1,NEACRP-U-190 (1977).

2.10) UO2-LW-AEEW-JUNO

H2O-moderated uranium oxide critical lattice

Laboratory: AEEW Atomic Energy Establishment, Winfrith (UK)

Facility: JUNO

This benchmark is an H2O moderated lattice of 3.003 w% enriched uranium
oxide rods in a hexagonal pattern. Material buckling was measured.

References

2.11) UO2-LW-BNL-BNLea

H2O-moderated uranium oxide critical lattices

Laboratory: BNL Brookhaven National laboratory (USA)

Facility: BNL Exponential Assemblies

These benchmarks are five H2O moderated lattices of 3.006 w% enriched uranium
oxide rods in hexagonal patterns. Material bucklings, r²⁸ and d²⁸ were measured.

References

2.12) UO2-LW-ANL-ZPR7

H2O-moderated uranium oxide critical lattices

Laboratory: ANL Argonne National laboratory (USA)

Facility: ZPR-7

These benchmarks are seven H2O moderated lattices of enriched uranium oxide rods in hexagonal
and square patterns. Material bucklings and some spectral indexes were measured.

References

2.13)UO2-LW-NPY-NORA

H2O-moderated uranium oxide critical lattices

Laboratory: NPY Norway-Poland-Yugoslavia Association, Kjeller (Norway)

Facility: NORA

These benchmarks are three H2O moderated lattices of3.41 w% enriched uranium oxide
rods in square patterns. Material bucklings and spectral indexes were measured.

Refereences

2.14) UO2-LW-SCKBN-VENUS

H2O-moderated uranium oxide critical lattices

Laboratory: SCK-BN Studie Centrum voor Kernenergie
Belgonucleaire Association (Belgium)

Facility: VENUS

References

[1] BINDLER, L. et al., Experimental and Theoretical Physics Work on Plutonium Enriched
LWR's Lattices, BLG-440, BN-7006-03, Belgonucleaire Studie Centrum voor
Kernenenergie Association (1970).

[2] BERNOCCHI, E., MARTINELLI, R. (editors) Light Water Lattice Data, pages 73,74,
Comitato Nazionale per LEnergia Nucleare, Dipartamento Ricerca Tecnologica di Base
ed Avanzata, Quaderno RIT/FIS(77)1,NEACRP-U-190 (1977).