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International Criticality Safety Benchmark Evaluation Project (ICSBEP)

Evaluations by country: United States

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Evaluation ID Laboratory Evaluation Title Year Cases
HEU-SOL-THERM-003 Rocky Flats PLEXIGLAS REFLECTED CYLINDERS OF HIGHLY ENRICHED SOLUTIONS OF URANYL NITRATE 3/4/1995 19
HEU-SOL-THERM-002 Rocky Flats CONCRETE REFLECTED CYLINDERS OF HIGHLY ENRICHED SOLUTIONS OF URANYL NITRATE ####### 14
PU-MET-FAST-001 Los Alamos National Laboratory BARE SPHERE OF PLUTONIUM-239 METAL (4.5 at.%. 240 Pu, 1.02 wt.% Ga) ####### 1
PU-MET-FAST-002 Los Alamos National Laboratory 240 Pu JEZEBEL: BARE SPHERE OF PLUTONIUM-239 METAL (20.1 at.% 240 Pu, 1.01 wt.% Ga) ####### 1
PU-MET-FAST-003 Lawrence Livermore National Laboratory UNMODERATED PLUTONIUM METAL BUTTON ARRAY ####### 5
PU-MET-FAST-004 Lawrence Livermore National Laboratory UNMODERATED PLUTONIUM METAL CYLINDER ARRAY - PHASE II ####### 9
PU-MET-FAST-005 Los Alamos National Laboratory BENCHMARK CRITICAL EXPERIMENT OF A PLUTONIUM SPHERE REFLECTED BY TUNGSTEN ####### 1
PU-MET-FAST-008 Los Alamos National Laboratory BENCHMARK CRITICAL EXPERIMENT OF A THORIUM REFLECTED PLUTONIUM SPHERE ####### 1
PU-MET-FAST-010 Los Alamos National Laboratory BENCHMARK CRITICAL EXPERIMENT OF A DELTA-PHASE PLUTONIUM SPHERE REFLECTED BY NORMAL URANIUM ####### 1
PU-MET-FAST-011 Los Alamos National Laboratory BENCHMARK CRITICAL EXPERIMENT OF A WATER REFLECTED ALPHA-PHASE PLUTONIUM SPHERE ####### 1
PU-MET-FAST-017 Lawrence Livermore National Laboratory MODERATED PLUTONIUM METAL CYLINDERS ARRAY - PHASE II ####### 5
PU-SOL-THERM-001 Pacific Northwest Laboratory WATER-REFLECTED 11.5-INCH DIAMETER SPHERES OF PLUTONIUM NITRATE SOLUTIONS ####### 6
PU-SOL-THERM-002 Hanford (P-11) WATER-REFLECTED 12-INCH DIAMETER SPHERES OF PLUTONIUM NITRATE SOLUTIONS ####### 7
PU-SOL-THERM-003 Hanford (P-11) WATER-REFLECTED 13-INCH DIAMETER SPHERES OF PLUTONIUM NITRATE SOLUTIONS ####### 8
PU-SOL-THERM-004 Hanford (P-11) WATER-REFLECTED 14-INCH DIAMETER SPHERES OF PLUTONIUM NITRATE SOLUTIONS, 0.54% TO 3.43% 240Pu ####### 13
PU-SOL-THERM-005 Hanford (P-11) WATER-REFLECTED 14-INCH DIAMETER SPHERES OF PLUTONIUM NITRATE SOLUTIONS, 4.05% AND 4.40% Pu240 ####### 9
PU-SOL-THERM-006 Hanford (P-11) WATER-REFLECTED 15-INCH DIAMETER SPHERES OF PLUTONIUM NITRATE SOLUTIONS ####### 3
HEU-MET-FAST-001 Los Alamos National Laboratory BARE, HIGHLY ENRICHED URANIUM SPHERE (GODIVA) ####### 1
HEU-MET-FAST-002 Los Alamos National Laboratory TOPSY 8-INCH-TUBALLOY-REFLECTED ORALLOY ASSEMBLIES ####### 6
HEU-MET-FAST-003 Los Alamos National Laboratory REFLECTED ORALLOY SPHERICAL ASSEMBLIES ####### 12
HEU-MET-FAST-004 Los Alamos National Laboratory WATER-REFLECTED, HIGHLY ENRICHED URANIUM SPHERE ####### 1
HEU-MET-FAST-006 Los Alamos National Laboratory LATTICES OF ORALLOY CUBES IN WATER ####### 2
HEU-MET-FAST-007 Oak Ridge National Laboratory URANIUM METAL SLABS MODERATED WITH POLYETHYLENE, PLEXIGLAS, AND TEFLON ####### 26
HEU-MET-INTER-007 Oak Ridge National Laboratory URANIUM METAL SLABS MODERATED WITH POLYETHYLENE, PLEXIGLAS, AND TEFLON ####### 4
HEU-MET-THERM-003 Los Alamos National Laboratory LATTICES OF ORALLOY CUBES IN WATER ####### 3
HEU-MET-THERM-006 Oak Ridge National Laboratory SPERT-D ALUMINUM-CLAD PLATE-TYPE FUEL IN WATER, DILUTE URANYL NITRATE, OR BORATED URANYL NITRATE ####### 18
HEU-MET-MIXED-009 Oak Ridge National Laboratory URANIUM METAL SLABS MODERATED WITH POLYETHYLENE, PLEXIGLAS, AND TEFLON ####### 13
HEU-MET-MIXED-010 Los Alamos National Laboratory LATTICES OF ORALLOY CUBES IN WATER ####### 2
HEU-SOL-INTER-001 Los Alamos National Laboratory REFLECTED URANYL-FLUORIDE SOLUTIONS IN HEAVY WATER ####### 2
HEU-SOL-THERM-001 Rocky Flats MINIMALLY REFLECTED CYLINDERS OF HIGHLY ENRICHED SOLUTIONS OF URANYL NITRATE ####### 10
HEU-SOL-THERM-004 Los Alamos National Laboratory REFLECTED URANYL-FLUORIDE SOLUTIONS IN HEAVY WATER ####### 4
HEU-SOL-THERM-007 Rocky Flats CONCRETE REFLECTED ARRAYS OF HIGHLY ENRICHED SOLUTIONS OF URANYL NITRATE ####### 17
HEU-SOL-THERM-008 Rocky Flats PLEXIGLAS REFLECTED ARRAYS OF HIGHLY ENRICHED SOLUTIONS OF URANYL NITRATE ####### 14
HEU-MISC-THERM-001 Oak Ridge National Laboratory SPERT-D ALUMINUM-CLAD PLATE-TYPE FUEL IN WATER, DILUTE URANYL NITRATE, OR BORATED URANYL NITRATE ####### 5
IEU-MET-FAST-001 Los Alamos National Laboratory THE EARLY JEMIMA EXPERIMENTS: BARE CYLINDRICAL CONFIGURATIONS OF ENRICHED AND NATURAL URANIUM ####### 4
IEU-COMP-THERM-001 Oak Ridge National Laboratory CRITICAL ARRAYS OF POLYETHYLENE-MODERATED U(30)F4-POLYTETRAFLUOROETHYLENE ONE-INCH CUBES ####### 25
IEU-COMP-MIXED-001 Oak Ridge National Laboratory CRITICAL ARRAYS OF POLYETHYLENE-MODERATED U(30)F4-POLYTETRAFLUOROETHYLENE ONE-INCH CUBES ####### 4
LEU-COMP-THERM-001 Pacific Northwest Laboratory WATER-MODERATED U(2.35)O2 FUEL RODS IN 2.032-CM SQUARE-PITCHED ARRAYS ####### 8
LEU-COMP-THERM-002 Pacific Northwest Laboratory WATER-MODERATED U(4.31)O2 FUEL RODS IN 2.54-CM SQUARE-PITCHED ARRAYS ####### 5
LEU-COMP-THERM-003 Pacific Northwest Laboratory WATER-MODERATED U(2.35)O2 FUEL RODS IN 1.684-CM SQUARE-PITCHED ARRAYS (GADOLINIUM WATER IMPURITY) ####### 23
LEU-COMP-THERM-004 Pacific Northwest Laboratory WATER-MODERATED U(4.31)O2 FUEL RODS IN 1.892-CM SQUARE-PITCHED ARRAYS (GADOLINIUM WATER IMPURITY) ####### 20
U233-MET-FAST-001 Los Alamos National Laboratory 233U JEZEBEL: A BARE SPHERE OF URANIUM-233 METAL ####### 1
U233-MET-FAST-002 Los Alamos National Laboratory BENCHMARK CRITICAL EXPERIMENTS OF URANIUM-233 SPHERES SURROUNDED BY URANIUM-235 ####### 2
U233-MET-FAST-003 Los Alamos National Laboratory BENCHMARK CRITICAL EXPERIMENTS OF HIGHLY ENRICHED URANIUM-233 SPHERES REFLECTED BY NORMAL URANIUM ####### 2
U233-MET-FAST-004 Los Alamos National Laboratory BENCHMARK CRITICAL EXPERIMENTS OF HIGHLY ENRICHED URANIUM-233 SPHERES REFLECTED BY TUNGSTEN ####### 2
MIX-MET-FAST-001 Los Alamos National Laboratory BENCHMARK CRITICAL EXPERIMENT OF A PLUTONIUM SPHERE SURROUNDED BY HIGHLY ENRICHED URANIUM ####### 1
MIX-SOL-THERM-001 Pacific Northwest Laboratory CRITICALITY EXPERIMENTS WITH MIXED PLUTONIUM AND URANIUM NITRATE SOLUTION AT A PLUTONIUM FRACTION OF 0.2 AND 1.0 IN ANNULAR CYLINDRICAL GEOMETRY ####### 13
MIX-SOL-THERM-002 Pacific Northwest Laboratory CRITICALITY EXPERIMENTS WITH MIXED PLUTONIUM AND URANIUM NITRATE SOLUTION AT A PLUTONIUM FRACTION OF 0.2 AND 0.5 IN LARGE CYLINDRICAL GEOMETRY ####### 3
PU-MET-FAST-009 Los Alamos National Laboratory BENCHMARK CRITICAL EXPERIMENT OF A PLUTONIUM SPHERE REFLECTED BY ALUMINUM ####### 1
PU-MET-FAST-018 Los Alamos National Laboratory BENCHMARK CRITICAL EXPERIMENT OF A DELTA-PHASE PLUTONIUM SPHERE REFLECTED BY BERYLLIUM ####### 1
PU-SOL-THERM-007 Pacific Northwest Laboratory WATER-REFLECTED 11.5-INCH-DIAMETER SPHERES PARTLY FILLED WITH PLUTONIUM NITRATE SOLUTIONS ####### 8
PU-SOL-THERM-009 Pacific Northwest Laboratory UNREFLECTED 48-INCH-DIAMETER SPHERE OF PLUTONIUM NITRATE SOLUTION ####### 3
PU-SOL-THERM-010 Hanford (P-11) WATER-REFLECTED 9-, 10-, 11-, AND 12-INCH-DIAMETER CYLINDERS OF PLUTONIUM NITRATE SOLUTIONS ####### 14
PU-SOL-THERM-011 Hanford (P-11) BARE 16- AND 18-INCH-DIAMETER SPHERES OF PLUTONIUM NITRATE SOLUTIONS ####### 12
HEU-MET-FAST-023 Oak Ridge National Laboratory TINKERTOY: UNMODERATED URANIUM METAL (93.2) ARRAYS WITH CYLINDERS OF 10.5 KG MASS ####### 22
HEU-SOL-THERM-009 Oak Ridge National Laboratory WATER-REFLECTED 6.4-LITER SPHERES OF ENRICHED URANIUM OXYFLUORIDE SOLUTIONS ####### 4
HEU-SOL-THERM-010 Oak Ridge National Laboratory WATER-REFLECTED 9.7 LITER SPHERES OF ENRICHED URANIUM OXYFLUORIDE SOLUTIONS ####### 4
HEU-SOL-THERM-011 Oak Ridge National Laboratory WATER-REFLECTED 17 LITER SPHERES OF ENRICHED URANIUM OXYFLUORIDE SOLUTIONS ####### 2
HEU-SOL-THERM-012 Oak Ridge National Laboratory WATER-REFLECTED 91-LITER SPHERE OF ENRICHED URANIUM OXYFLUORIDE SOLUTION ####### 1
HEU-SOL-THERM-013 Oak Ridge National Laboratory UNREFLECTED 174-LITER SPHERES OF ENRICHED URANIUM NITRATE SOLUTIONS ####### 4
HEU-SOL-THERM-020 Los Alamos National Laboratory UNREFLECTED CYLINDERS OF URANYL-FLUORIDE SOLUTIONS IN HEAVY WATER ####### 5
HEU-SOL-THERM-021 Oak Ridge National Laboratory BARE AND HYDROGENOUS REFLECTED ARRAYS OF HIGHLY ENRICHED SOLUTIONS OF URANYL NITRATE (1F EXPERIMENTS) ####### 32
IEU-MET-FAST-002 Los Alamos National Laboratory NATURAL URANIUM REFLECTED ASSEMBLY OF ENRICHED AND NATURAL URANIUM PLATES ####### 1
LEU-COMP-THERM-008 Babcock and Wilcox CRITICAL LATTICES OF UO2 FUEL RODS AND PERTURBING RODS IN BORATED WATER ####### 17
LEU-COMP-THERM-010 Pacific Northwest Laboratory WATER-MODERATED U(4.31)O2 FUEL RODS REFLECTED BY TWO LEAD, URANIUM, OR STEEL WALLS ####### 30
LEU-COMP-THERM-017 Pacific Northwest Laboratory WATER-MODERATED U(2.35)O2 FUEL RODS REFLECTED BY TWO LEAD, URANIUM, OR STEEL WALLS ####### 29
U233-MET-FAST-005 Los Alamos National Laboratory BENCHMARK CRITICAL EXPERIMENT OF HIGHLY ENRICHED URANIUM-233 SPHERES REFLECTED BY BERYLLIUM ####### 2
U233-MET-FAST-006 Los Alamos National Laboratory BENCHMARK CRITICAL EXPERIMENT OF A URANIUM-233 SPHERE REFLECTED BY NORMAL URANIUM WITH FLATTOP ####### 1
U233-SOL-THERM-001 Oak Ridge National Laboratory UNREFLECTED SPHERES OF 233U NITRATE SOLUTIONS ####### 5
MIX-MET-FAST-007 Lawrence Livermore National Laboratory CRITICAL EXPERIMENTS PERFORMED USING SPHERICAL COMPOSITE CORES REFLECTED BY BERYLLIUM ####### 23
MIX-SOL-THERM-004 Pacific Northwest Laboratory CRITICALITY EXPERIMENTS WITH MIXED PLUTONIUM AND URANIUM NITRATE SOLUTION AT A PLUTONIUM FRACTION OF 0.4 IN SMALL CYLINDRICAL GEOMETRY ####### 9
MIX-COMP-THERM-001 Pacific Northwest Laboratory WATER-REFLECTED MIXED PLUTONIUM-URANIUM OXIDE (20 WT.% PU) PINS ####### 4
PU-MET-FAST-006 Los Alamos National Laboratory PLUTONIUM SPHERE REFLECTED BY NORMAL URANIUM USING FLATTOP ####### 1
PU-MET-FAST-016 Rocky Flats FLOODED 3x3x3 ARRAYS OF 3-KG PLUTONIUM METAL CYLINDERS - PHASE I ####### 6
PU-SOL-THERM-020 Pacific Northwest Laboratory WATER-REFLECTED AND WATER-CADMIUM-REFLECTED 14-INCH DIAMETER SPHERES OF PLUTONIUM NITRATE SOLUTIONS ####### 8
HEU-MET-FAST-026 Oak Ridge National Laboratory TINKERTOY 2: BARE AND PARAFFIN-REFLECTED URANIUM (93.2) METAL ARRAYS WITH 15, 20 AND 25-KG CYLINDERS ####### 32
HEU-MET-FAST-028 Los Alamos National Laboratory URANIUM-235 SPHERE REFLECTED BY NORMAL URANIUM USING FLATTOP ####### 1
HEU-SOL-THERM-006 Los Alamos National Laboratory EXPERIMENTS WITH BORON-POISONED HIGHLY ENRICHED URANYL NITRATE SOLUTION ####### 29
HEU-COMP-THERM-010 Oak Ridge National Laboratory EBOR FUEL PINS IN WATER, BORATED WATER, OR URANYL NITRATE ####### 19
HEU-MISC-THERM-002 Oak Ridge National Laboratory EBOR FUEL PINS IN WATER, BORATED WATER, OR URANYL NITRATE ####### 2
LEU-SOL-THERM-001 Los Alamos National Laboratory UNREFLECTED UO2F2+H2O CYLINDRICAL ASSEMBLY SHEBA-II ####### 1
LEU-SOL-THERM-002 Oak Ridge National Laboratory 174 LITER SPHERES OF LOW ENRICHED (4.9%) URANIUM OXYFLUORIDE SOLUTIONS ####### 3
U233-SOL-THERM-008 Oak Ridge National Laboratory A 48-INCH-DIAMETER UNREFLECTED SPHERE OF 233U NITRATE SOLUTION ####### 1
MIX-MET-FAST-002 Los Alamos National Laboratory SPHERICAL COMPOSITE CORES COMPOSED OF PLUTONIUM AND HIGHLY ENRICHED URANIUM REFLECTED BY NORMAL URANIUM ####### 3
MIX-SOL-THERM-005 Pacific Northwest Laboratory CRITICALITY EXPERIMENTS WITH MIXED PLUTONIUM AND URANIUM NITRATE SOLUTION AT A PLUTONIUM FRACTION OF 0.4 IN SLAB GEOMETRY ####### 7
MIX-COMP-THERM-002 Pacific Northwest Laboratory RECTANGULAR ARRAYS OF WATER-MODERATED UO2-2 Wt.% PUO2 (8% 240Pu) FUEL RODS ####### 6
MIX-COMP-THERM-003 Westinghouse RECTANGULAR ARRAYS OF WATER-MODERATED UO2-6.6 WT.% PUO2 FUEL RODS ####### 6
SPEC-MET-FAST-003 Los Alamos National Laboratory NEPTUNIUM-237 AND HIGHLY ENRICHED URANIUM REPLACEMENT MEASUREMENTS PERFORMED USING FLATTOP ####### 5
PU-MET-FAST-037 Rocky Flats FLOODED 2x2xN ARRAYS OF 3-KG PLUTONIUM METAL CYLINDERS - PHASE 2 ####### 16
PU-SOL-THERM-021 Pacific Northwest Laboratory WATER-REFLECTED AND BARE 15.2-INCH-DIAMETER SPHERES OF PLUTONIUM NITRATE SOLUTIONS ####### 6
PU-SOL-THERM-024 Pacific Northwest Laboratory SLABS OF PLUTONIUM NITRATE SOLUTIONS REFLECTED BY 1-INCH-THICK PLEXIGLAS ####### 23
PU-SOL-THERM-025 Pacific Northwest Laboratory WATER-REFLECTED SLABS OF PLUTONIUM NITRATE SOLUTIONS ####### 44
HEU-MET-FAST-032 Los Alamos National Laboratory 235U(94%) SPHERES SURROUNDED BY NATURAL-URANIUM REFLECTORS ####### 4
HEU-MET-INTER-001 Argonne National Laboratory THE URANIUM/IRON BENCHMARK ASSEMBLY: A 235U(93%)/IRON CYLINDER REFLECTED BY STAINLESS STEEL ####### 1
HEU-SOL-THERM-005 Oak Ridge National Laboratory AQUEOUS SOLUTIONS OF 235U POISONED WITH PYREX GLASS PIPES ####### 17
HEU-SOL-THERM-032 Oak Ridge National Laboratory A 48-INCH-DIAMETER UNREFLECTED SPHERE OF URANYL NITRATE (93.2 wt.% 235U) SOLUTION ####### 1
HEU-SOL-THERM-033 Rocky Flats HIGHLY ENRICHED URANYL NITRATE IN ANNULAR TANKS WITH CONCRETE REFLECTION: FOUR NESTED TANKS ####### 26
HEU-COMP-THERM-002 Oak Ridge National Laboratory GRAPHITE AND WATER MODERATED NRX-A3 AND NRX-A4 ASSEMBLIES ####### 25
IEU-MET-FAST-007 Los Alamos National Laboratory BIG TEN: A LARGE, MIXED-URANIUM-METAL CYLINDRICAL CORE WITH 10% AVERAGE 235U ENRICHMENT, SURROUNDED BY A THICK 238U REFLECTOR ####### 1
LEU-COMP-THERM-016 Pacific Northwest Laboratory WATER-MODERATED RECTANGULAR CLUSTERS OF U(2.35)O2 FUEL RODS (2.032-CM PITCH) SEPARATED BY STEEL, BORAL, COPPER, CADMIUM, ALUMINUM, OR ZIRCALOY-4 PLATES ####### 32
U233-SOL-THERM-004 Oak Ridge National Laboratory PARAFFIN-REFLECTED 5-, 6-, AND 7.5-INCH-DIAMETER CYLINDERS OF 233U URANYL NITRATE SOLUTIONS ####### 8
SPEC-MET-FAST-004 Los Alamos National Laboratory CRITICAL EXPERIMENTS PERFORMED USING PLATES OF PLUTONIUM-242, HEU, AND PLUTONIUM-239 ####### 7
PU-SOL-THERM-008 Pacific Northwest Laboratory CONCRETE-REFLECTED 14-INCH-DIAMETER SPHERES OF PLUTONIUM NITRATE SOLUTIONS ####### 15
PU-SOL-THERM-026 Pacific Northwest Laboratory UNREFLECTED SLABS OF PLUTONIUM NITRATE SOLUTIONS ####### 21
PU-COMP-FAST-001 Pacific Northwest Laboratory UNREFLECTED SLABS OF POLYSTYRENE-MODERATED PLUTONIUM OXIDE ####### 1
PU-COMP-FAST-002 Pacific Northwest Laboratory PLEXIGLAS REFLECTED SLABS OF POLYSTYRENE-MODERATED PLUTONIUM OXIDE ####### 5
PU-COMP-INTER-002 Pacific Northwest Laboratory UNREFLECTED SLABS OF POLYSTYRENE-MODERATED PLUTONIUM OXIDE ####### 3
PU-COMP-THERM-001 Pacific Northwest Laboratory UNREFLECTED SLABS OF POLYSTYRENE-MODERATED PLUTONIUM OXIDE ####### 1
PU-COMP-THERM-002 Pacific Northwest Laboratory PLEXIGLAS REFLECTED SLABS OF POLYSTYRENE-MODERATED PLUTONIUM OXIDE ####### 16
PU-COMP-MIXED-002 Pacific Northwest Laboratory PLEXIGLAS REFLECTED SLABS OF POLYSTYRENE-MODERATED PLUTONIUM OXIDE ####### 8
HEU-MET-FAST-041 Los Alamos National Laboratory 235U(94%) SPHERES SURROUNDED BY BERYLLIUM OR GRAPHITE REFLECTORS ####### 6
HEU-COMP-THERM-001 Oak Ridge National Laboratory ARRAYS OF CANS OF HIGHLY ENRICHED URANIUM DIOXIDE REFLECTED BY POLYETHYLENE ####### 6
HEU-COMP-MIXED-001 Oak Ridge National Laboratory ARRAYS OF CANS OF HIGHLY ENRICHED URANIUM DIOXIDE REFLECTED BY POLYETHYLENE ####### 20
IEU-MET-FAST-010 Argonne National Laboratory THE U9 BENCHMARK ASSEMBLY: A CYLINDRICAL ASSEMBLY OF U METAL (9% 235U) WITH A THICK DEPLETED-URANIUM REFLECTOR ####### 1
LEU-COMP-THERM-009 Pacific Northwest Laboratory WATER-MODERATED RECTANGULAR CLUSTERS OF U(4.31)O2 FUEL RODS (2.54-CM PITCH) SEPARATED BY STEEL, BORAL, COPPER, CADMIUM, ALUMINUM, OR ZIRCALOY-4 PLATES ####### 27
LEU-COMP-THERM-012 Pacific Northwest Laboratory WATER-MODERATED RECTANGULAR CLUSTERS OF U(2.35)O2 FUEL RODS(1.684-CM PITCH) SEPARATED BY STEEL, BORAL, BOROFLEX, CADMIUM,OR COPPER PLATES (GADOLINIUM WATER IMPURITY) ####### 10
LEU-COMP-THERM-042 Pacific Northwest Laboratory WATER-MODERATED RECTANGULAR CLUSTERS OF U(2.35)O2 FUEL RODS (1.684-CM PITCH) SEPARATED BY STEEL, BORAL, BOROFLEX, CADMIUM, OR COPPER PLATES, WITH STEEL REFLECTING WALLS ####### 7
U233-SOL-THERM-002 Oak Ridge National Laboratory PARAFFIN-REFLECTED 8-, 8.5-, 9-, 10-, AND 12-INCH-DIAMETER CYLINDERS OF 233U URANYL NITRATE SOLUTIONS ####### 17
MIX-COMP-THERM-005 Pacific Northwest Laboratory WATER-MODERATED MIXED PLUTONIUM-URANIUM OXIDE PINS, 4.0 WT.% PUO2, 18% 240Pu, NATURAL URANIUM ####### 7
MIX-COMP-THERM-007 Pacific Northwest Laboratory HEXAGONAL LATTICES OF MIXED OXIDE FUEL PINS UO2 - 2 Wt.% PUO2 (16% 240 Pu), NATURAL URANIUM ####### 27
MIX-COMP-THERM-008 Pacific Northwest Laboratory HEXAGONAL LATTICES OF MIXED OXIDE FUEL PINS UO2 – 2.0 WT.% PUO2, 24% 240Pu, NATURAL URANIUM ####### 28
MIX-COMP-THERM-009 Pacific Northwest Laboratory MIXED-OXIDE FUEL-PIN LATTICE – 1.5 WT.% PUO2, 8% 240 Pu, DEPLETED URANIUM ####### 6
MIX-MISC-THERM-001 Pacific Northwest Laboratory MIXED OXIDE FUEL-PIN LATTICE IN PLUTONIUM-URANIUM NITRATE SOLUTION ####### 11
HEU-MET-FAST-055 Argonne National Laboratory-W ZPR-3 ASSEMBLY 23: A CYLINDRICAL ASSEMBLY OF U METAL (93% 235U) AND ALUMINUM REFLECTED BY DEPLETED-URANIUM ####### 1
HEU-MET-INTER-006 Los Alamos National Laboratory THE INITIAL SET OF ZEUS EXPERIMENTS: INTERMEDIATE-SPECTRUM CRITICAL ASSEMBLIES WITH A GRAPHITE-HEU CORE SURROUNDED BY A COPPER REFLECTOR ####### 4
HEU-SOL-THERM-043 Oak Ridge National Laboratory LARGE UNREFLECTED SPHERES OF URANIUM OXYFLUORIDE SOLUTIONS ####### 3
HEU-SOL-THERM-044 Rocky Flats CONCRETE-REFLECTED URANYL NITRATE SOLUTION CYLINDER CONTAINING PERIODICALLY DISTRIBUTED ABSORBER RODS ####### 31
HEU-COMP-INTER-003 Los Alamos National Laboratory REFLECTED URANIUM-HYDRIDE CYLINDRICAL ASSEMBLIES ####### 7
LEU-COMP-THERM-005 Pacific Northwest Laboratory CRITICAL EXPERIMENTS WITH LOW-ENRICHED URANIUM DIOXIDE FUEL RODS IN WATER CONTAINING DISSOLVED GADOLINIUM ####### 16
U233-SOL-INTER-001 Lawrence Livermore National Laboratory URANYL-FLUORIDE (233U) SOLUTIONS IN SPHERICAL STAINLESS STEEL VESSELS WITH REFLECTORS OF Be, CH2 AND Be-CH2 COMPOSITES - PART I ####### 29
U233-SOL-THERM-003 Oak Ridge National Laboratory PARAFFIN-REFLECTED 5-, 5.4-, 6-, 6.6-, 7.5-, 8-, 8.5-, 9-, AND 12-INCH-DIAMETER CYLINDERS OF 233U URANYL FLUORIDE SOLUTIONS ####### 10
U233-SOL-THERM-011 Lawrence Livermore National Laboratory URANYL-FLUORIDE (233U) SOLUTIONS IN SPHERICAL STAINLESS STEEL VESSELS WITH REFLECTORS OF Be, CH2 AND Be-CH2 COMPOSITES - PART I ####### 1
U233-SOL-MIXED-001 Lawrence Livermore National Laboratory URANYL-FLUORIDE (233U) SOLUTIONS IN SPHERICAL STAINLESS STEEL VESSELS WITH REFLECTORS OF Be, CH2 AND Be-CH2 COMPOSITES - PART I ####### 3
MIX-COMP-THERM-006 Pacific Northwest Laboratory WATER-MODERATED MIXED OXIDE HEXAGONAL LATTICES - 2.0 WT.% PUO2, 8% 240PU, NATURAL URANIUM ####### 50
SUB-HEU-SOL-THERM-001 Oak Ridge National Laboratory UNREFLECTED HIGH-ENRICHED URANYL NITRATE SUBCRITICAL NOISE MEASUREMENTS ####### 5
HEU-SOL-THERM-042 Oak Ridge National Laboratory UNREFLECTED LARGE-DIAMETER CYLINDERS OF ENRICHED URANIUM NITRATE SOLUTIONS ####### 8
PU-MET-FAST-033 Argonne National Laboratory-W ZPPR-21 PHASE A: A CYLINDRICAL ASSEMBLY OF PU METAL REFLECTED BY GRAPHITE ####### 1
HEU-MET-FAST-048 Rocky Flats OIL-REFLECTED SPHERES AND HEMISPHERES OF HIGHLY ENRICHED URANIUM (93.1% 235U) METAL WITH OIL OR STEEL MODERATOR ####### 13
HEU-MET-FAST-061 Argonne National Laboratory-W ZPPR-21 PHASE F: A CYLINDRICAL ASSEMBLY OF U METAL REFLECTED BY GRAPHITE ####### 1
HEU-MET-MIXED-011 Rocky Flats OIL-REFLECTED SPHERES AND HEMISPHERES OF HIGHLY ENRICHED URANIUM (93.1% 235U) METAL WITH OIL OR STEEL MODERATOR ####### 4
HEU-COMP-THERM-022 Idaho National Laboratory SPERT III STAINLESS-STEEL-CLAD PLATE-TYPE FUEL IN WATER ####### 11
IEU-MET-FAST-012 Argonne National Laboratory-W ZPR-3 ASSEMBLY 41: A CYLINDRICAL ASSEMBLY OF U METAL (16% 235U), ALUMINUM, AND STEEL, REFLECTED BY DEPLETED-URANIUM ####### 1
LEU-COMP-THERM-011 Babcock and Wilcox CRITICAL EXPERIMENTS SUPPORTING CLOSE PROXIMITY WATER STORAGE OF POWER REACTOR FUEL (PART I - ABSORBER RODS) ####### 15
LEU-COMP-THERM-013 Pacific Northwest Laboratory WATER-MODERATED RECTANGULAR CLUSTERS OF U(4.31)O2 FUEL RODS (1.892-CM PITCH) SEPARATED BY STEEL, BORAL, BOROFLEX, CADMIUM, OR COPPER PLATES, WITH STEEL REFLECTING WALLS ####### 7
LEU-COMP-THERM-033 Oak Ridge National Laboratory REFLECTED AND UNREFLECTED ASSEMBLIES OF 2 AND 3%-ENRICHED URANIUM FLUORIDE IN PARAFFIN ####### 52
LEU-COMP-THERM-051 Babcock and Wilcox CRITICAL EXPERIMENTS SUPPORTING CLOSE PROXIMITY WATER STORAGE OF POWER REACTOR FUEL (PART II - ISOLATING PLATES) ####### 19
U233-SOL-THERM-005 Oak Ridge National Laboratory WATER-REFLECTED 233U URANYL NITRATE SOLUTIONS IN SIMPLE GEOMETRY ####### 2
U233-SOL-THERM-006 Oak Ridge National Laboratory ARRAYS OF 233UO2(NO3)2 AQUEOUS SOLUTIONS CONTAINED WITHIN STAINLESS STEEL CANS ####### 25
MIX-MET-FAST-011 Argonne National Laboratory-W ZPPR-21 PHASES B THROUGH E: CYLINDRICAL ASSEMBLIES OF MIXED FISSILE PU AND U METAL REFLECTED BY GRAPHITE ####### 4
MIX-COMP-THERM-012 Pacific Northwest Laboratory REFLECTED AND UNREFLECTED POLYSTYRENE-MODERATED, MIXED OXIDE CUBES AND SLABS ####### 33
PU-MET-FAST-045 Los Alamos National Laboratory CRITICAL EXPERIMENTS PERFORMED FOR LAMPRE, THE LOS ALAMOS MOLTEN PLUTONIUM REACTOR ####### 7
PU-MET-INTER-002 Argonne National Laboratory ZPR-6 ASSEMBLY 10: A CYLINDRICAL PLUTONIUM/CARBON/STAINLESS STEEL ASSEMBLY WITH STAINLESS STEEL AND IRON REFLECTORS ####### 1
HEU-MET-FAST-051 Oak Ridge National Laboratory URANIUM (93.2) METAL CYLINDERS (7-INCH, 9-INCH, 11-INCH, 13-INCH, AND 15-INCH DIAMETER) AND TWO 11-INCH-DIAMETER INTERACTING URANIUM (93.2) METAL CYLINDERS ####### 18
HEU-MET-FAST-060 Argonne National Laboratory ZPR-9 ASSEMBLY 4: A CYLINDRICAL ASSEMBLY OF U METAL (93% 235U) AND TUNGSTEN WITH ALUMINUM REFLECTORS ####### 1
HEU-MET-THERM-001 Los Alamos National Laboratory POLYETHYLENE REFLECTED AND MODERATED HIGHLY ENRICHED URANIUM SYSTEM WITH SILICON ####### 1
HEU-MET-THERM-008 Los Alamos National Laboratory POLYETHYLENE REFLECTED AND MODERATED HIGHLY ENRICHED URANIUM SYSTEM WITH ALUMINUM ####### 1
HEU-MET-THERM-009 Los Alamos National Laboratory POLYETHYLENE REFLECTED AND MODERATED HIGHLY ENRICHED URANIUM SYSTEM WITH MAGNESIUM OXIDE ####### 1
HEU-MET-THERM-010 Los Alamos National Laboratory POLYETHYLENE REFLECTED AND MODERATED HIGHLY ENRICHED URANIUM SYSTEMS WITH GADOLINIUM ####### 2
HEU-SOL-THERM-038 Los Alamos National Laboratory WINCO SLAB TANKS: TWO INTERACTING TANKS OF HIGHLY ENRICHED URANYL NITRATE SOLUTION WITH VARIOUS ABSORBER-REFLECTOR PLATES ####### 30
HEU-SOL-THERM-040 Rocky Flats INTERSECTING PIPE CONFIGURATIONS CONTAINING HIGHLY CONCENTRATED (453 gU/l) AND HIGHLY ENRICHED (93.17 wt.% 235U) URANYL NITRATE SOLUTION ####### 17
IEU-MET-FAST-014 Argonne National Laboratory ZPR-9 ASSEMBLIES 2 AND 3: CYLINDRICAL ASSEMBLIES OF U METAL AND TUNGSTEN WITH ALUMINUM REFLECTORS ####### 2
LEU-COMP-THERM-014 Pacific Northwest Laboratory WATER-REFLECTED ARRAYS OF U(4.31)O2 FUEL RODS (1.890-CM AND 1.715-CM SQUARE PITCH) IN BORATED WATER ####### 5
U233-SOL-THERM-012 Oak Ridge National Laboratory WATER-REFLECTED SPHERICAL VESSELS PARTIALLY FILLED OR FILLED WITH 233UO2(NO3)2 SOLUTION ####### 8
U233-SOL-THERM-014 Pacific Northwest Laboratory LUCITE-MODERATED AND UNMODERATED, REFLECTED AND NON-REFLECTED ARRAYS OF BOTTLES CONTAINING URANYL NITRATE (98.2 WT.% 233U) SOLUTION ####### 16
U233-SOL-THERM-015 Lawrence Livermore National Laboratory URANYL-FLUORIDE (233U) SOLUTIONS IN SPHERICAL STAINLESS STEEL VESSELS WITH REFLECTORS OF Be, CH2 AND Be-CH2 COMPOSITES - PART II ####### 26
U233-SOL-MIXED-002 Lawrence Livermore National Laboratory URANYL-FLUORIDE (233U) SOLUTIONS IN SPHERICAL STAINLESS STEEL VESSELS WITH REFLECTORS OF Be, CH2 AND Be-CH2 COMPOSITES - PART II ####### 5
HEU-MET-FAST-058 Lawrence Livermore National Laboratory HIGHLY ENRICHED URANIUM METAL SPHERES WITH BERYLLIUM REFLECTORS ####### 5
HEU-MET-FAST-067 Argonne National Laboratory ZPR-9 ASSEMBLIES 5 AND 6: HEU (93% 235U) CYLINDRICAL CORES WITH TUNGSTEN, GRAPHITE, AND ALUMINUM DILUENTS WITH A DENSE ALUMINUM REFLECTOR ####### 2
HEU-MET-THERM-013 Los Alamos National Laboratory POLYETHYLENE REFLECTED AND MODERATED HIGHLY ENRICHED URANIUM SYSTEMS WITH IRON ####### 2
HEU-MET-THERM-014 Los Alamos National Laboratory 2 x 2 x 23 ARRAY OF HIGHLY ENRICHED URANIUM WITH SILICON DIOXIDE, MODERATED AND REFLECTED BY POLYETHYLENE ####### 1
HEU-MET-THERM-016 Los Alamos National Laboratory 2 x 2 x 11 ARRAY OF HIGHLY ENRICHED URANIUM WITH NI-CR-MO-GD ALLOY, MODERATED AND REFLECTED BY POLYETHYLENE ####### 1
HEU-MET-THERM-025 Oak Ridge National Laboratory BERYLLIUM MODERATED CRITICAL ASSEMBLIES OF HIGHLY ENRICHED URANIUM (ORNL CA-1 and CA-18) ####### 2
HEU-COMP-THERM-015 Bettis Atomic Power Laboratory LWBR SB CORE EXPERIMENTS ####### 3
LEU-COMP-THERM-045 Rocky Flats PLEXIGLAS OR CONCRETE-REFLECTED U(4.46)3O8 WITH H/U=0.77 AND INTERSTITIAL MODERATION ####### 21
U233-SOL-THERM-013 Oak Ridge National Laboratory UNREFLECTED SPHERICAL VESSELS PARTIALLY FILLED OR FILLED WITH 233UO2(NO3)2 SOLUTION ####### 21
U233-COMP-THERM-001 Bettis Atomic Power Laboratory LWBR SB CORE EXPERIMENTS ####### 5
MIX-COMP-FAST-001 Argonne National Laboratory ZPR-6 ASSEMBLY 7: A CYLINDRICAL ASSEMBLY WITH MIXED (PU,U)-OXIDE FUEL AND SODIUM WITH A THICK DEPLETED-URANIUM REFLECTOR ####### 1
MIX-MISC-THERM-004 Pacific Northwest Laboratory WATER-REFLECTED TRIANGULAR-PITCHED LATTICE OF MIXED OXIDE FUEL RODS IMMERSED IN PLUTONIUM / URANYL NITRATE SOLUTION CONTAINING GADOLINIUM ####### 6
SPEC-MET-FAST-008 Los Alamos National Laboratory NEPTUNIUM-237 SPHERE SURROUNDED BY HEMISPHERICAL SHELLS OF HIGHLY ENRICHED URANIUM ####### 1
SUB-PU-MET-FAST-001 Los Alamos National Laboratory POLYETHYLENE-REFLECTED PLUTONIUM METAL SPHERE SUBCRITICAL NOISE MEASUREMENTS ####### 5
HEU-MET-FAST-057 Lawrence Livermore National Laboratory HIGHLY ENRICHED URANIUM METAL SPHERES AND CYLINDERS REFLECTED BY LEAD ####### 6
HEU-MET-FAST-063 Los Alamos National Laboratory CYLINDRICAL EXPERIMENTS USING HEU PLATES REFLECTED BY LITHIUM DEUTERIDE ####### 2
HEU-MET-FAST-070 Argonne National Laboratory ZPR-9 ASSEMBLIES 7, 8 AND 9: CYLINDRICAL CORES WITH HEU (93% 235U), TUNGSTEN, AND ALUMINUM OR ALUMINUM OXIDE WITH A DENSE ALUMINUM, ALUMINUM OXIDE, OR BERYLLIUM OXIDE REFLECTOR ####### 3
HEU-MET-FAST-071 Oak Ridge National Laboratory URANIUM (93.14) METAL ANNULI WITH ONE- AND TWO-INCH GRAPHITE REFLECTORS ####### 27
HEU-MET-FAST-072 Los Alamos National Laboratory ZEUS: FAST-SPECTRUM CRITICAL ASSEMBLIES WITH AN IRON - HEU CORE SURROUNDED BY A COPPER REFLECTOR ####### 3
HEU-MET-INTER-010 Lawrence Livermore National Laboratory HIGHLY ENRICHED URANIUM METAL MODERATED BY BERYLLIUM OXIDE ####### 1
HEU-MET-THERM-012 Los Alamos National Laboratory 2 x 2 x 26 ARRAY OF HIGHLY ENRICHED URANIUM WITH ALUMINUM, MODERATED AND REFLECTED BY POLYETHYLENE ####### 1
HEU-MET-THERM-018 Los Alamos National Laboratory POLYETHYLENE REFLECTED AND MODERATED HIGHLY ENRICHED URANIUM SYSTEM WITH CONCRETE ####### 1
HEU-MET-THERM-027 Lawrence Livermore National Laboratory HIGHLY ENRICHED URANIUM METAL MODERATED BY BERYLLIUM OXIDE ####### 14
HEU-SOL-THERM-049 Pacific Northwest Laboratory HIGHLY ENRICHED URANYL NITRATE SOLUTION CONTAINING CADMIUM ####### 20
IEU-MET-FAST-013 Argonne National Laboratory ZPR-9 ASSEMBLY 1: A CYLINDRICAL ASSEMBLY OF U METAL (93% 235U) AND DEPLETED URANIUM WITH ALUMINUM REFLECTORS ####### 1
IEU-SOL-THERM-004 Los Alamos National Laboratory Water Boiler Experiment: Beryllium Oxide-Reflected Sphere Containing Uranyl (14.7) Sulfate Solution ####### 1
IEU-COMP-INTER-005 Argonne National Laboratory ZPR-6 ASSEMBLY 6A: A CYLINDRICAL ASSEMBLY WITH URANIUM OXIDE FUEL AND SODIUM WITH A THICK DEPLETED-URANIUM BLANKET ####### 1
LEU-COMP-FAST-001 Rocky Flats PLEXIGLAS-REFLECTED, CONCRETE-REFLECTED, OR THIN STEEL-REFLECTED U(4.46)3O8 WITH H/U=0.77 AND HEU DRIVERS ####### 1
LEU-COMP-THERM-056 Idaho National Laboratory CRITICAL EXPERIMENT WITH BORAX-V BOILING WATER REACTOR TYPE FUEL ASSEMBLIES ####### 1
LEU-COMP-THERM-066 Rocky Flats PLEXIGLAS-REFLECTED, CONCRETE-REFLECTED, OR THIN STEEL-REFLECTED U(4.46)3O8 WITH H/U=0.77 AND HEU DRIVERS ####### 7
LEU-COMP-MIXED-001 Rocky Flats PLEXIGLAS-REFLECTED, CONCRETE-REFLECTED, OR THIN STEEL-REFLECTED U(4.46)3O8 WITH H/U=0.77 AND HEU DRIVERS ####### 2
U233-SOL-THERM-009 Oak Ridge National Laboratory UNREFLECTED LARGE-DIAMETER CYLINDERS OF U233URANYL NITRATE SOLUTIONS ####### 4
MIX-SOL-THERM-007 Pacific Northwest Laboratory WATER-REFLECTED PLUTONIUM-URANYL NITRATE SOLUTION CONTAINING GADOLINIUM ####### 7
MIX-COMP-THERM-013 Pacific Northwest Laboratory REFLECTED, POLYSTYRENE-MODERATED, MIXED OXIDE BLOCKS WITH FIXED ABSORBER PLATES ####### 30
MIX-COMP-THERM-014 Pacific Northwest Laboratory REFLECTED, POLYSTYRENE-MODERATED, MIXED OXIDE BLOCKS WITH FIXED ABSORBER PLATES OF CU, CU-CD AND AL ####### 22
SPEC-MET-FAST-014 Los Alamos National Laboratory NEPTUNIUM-237 SPHERE SURROUNDED BY HIGHLY ENRICHED URANIUM AND REFLECTED BY LOW-CARBON STEEL ####### 1
HEU-MET-FAST-066 Lawrence Livermore National Laboratory METAL SPHERICAL SHELLS OF HIGHLY ENRICHED URANIUM MODERATED AND REFLECTED BY BERYLLIUM ####### 9
HEU-MET-FAST-073 Los Alamos National Laboratory THE UNMODERATED ZEUS EXPERIMENT: A CYLINDRICAL HEU CORE SURROUNDED BY A COPPER REFLECTOR ####### 1
HEU-MET-FAST-075 Argonne National Laboratory-W ZPPR-20 PHASE C: A CYLINDRICAL ASSEMBLY OF U METAL REFLECTED BY BERYLLIUM OXIDE ####### 1
HEU-MET-INTER-009 Lawrence Livermore National Laboratory ‘SPADE’ ASSEMBLIES PART II: HIGHLY ENRICHED URANIUM METAL FOILS MODERATED BY BERYLLIUM OXIDE ####### 2
HEU-MET-THERM-015 Los Alamos National Laboratory 2 x 2 ARRAY OF HIGHLY ENRICHED URANIUM WITH IRON, MODERATED AND REFLECTED BY POLYETHYLENE ####### 1
HEU-MET-THERM-022 Idaho National Laboratory ADVANCED TEST REACTOR: SERPENTINE ARRANGEMENT OF HIGHLY ENRICHED WATER-MODERATED URANIUM-ALUMINIDE FUEL PLATES REFLECTED BY BERYLLIUM ####### 1
HEU-SOL-THERM-050 Oak Ridge National Laboratory UNREFLECTED ALUMINUM CYLINDERS CONTAINING URANYL FLUORIDE SOLUTIONS ####### 11
LEU-COMP-THERM-068 Rocky Flats PLEXIGLAS-REFLECTED, CONCRETE-REFLECTED, OR THIN STEEL-REFLECTED U(4.48)3O8 WITH H/U=1.25 OR H/U=2.03 AND HEU DRIVERS ####### 14
LEU-COMP-THERM-069 Rocky Flats PLEXIGLAS-REFLECTED U(4.48)3O8 WITH H/U=1.25 OR H/U=2.03 AND INTERSTITIAL MODERATION ####### 5
LEU-COMP-THERM-079 Sandia National Laboratory WATER-MODERATED U(4.31)O2 FUEL ROD LATTICES CONTAINING RHODIUM FOILS ####### 10
LEU-COMP-MIXED-002 Rocky Flats PLEXIGLAS-REFLECTED, CONCRETE-REFLECTED, OR THIN STEEL-REFLECTED U(4.48)3O8 WITH H/U=1.25 OR H/U=2.03 AND HEU DRIVERS ####### 3
U233-SOL-THERM-016 Oak Ridge National Laboratory UNREFLECTED SOLUTIONS OF 233UO2(NO3)2 IN CYLINDERS ####### 33
U233-SOL-THERM-017 Oak Ridge National Laboratory WATER-REFLECTED SOLUTIONS OF 233UO2(NO3)2 IN CYLINDERS ####### 7
MIX-MET-FAST-013 Los Alamos National Laboratory PLUTONIUM SPHERE SURROUNDED BY HIGHLY ENRICHED URANIUM ####### 1
MIX-SOL-THERM-008 Pacific Northwest Laboratory PLUTONIUM (5.7% 240PU), DEPLETED-URANIUM NITRATE SOLUTIONS (240-270 G/LITER OF PU+U AND PU:U ≅ 1:2) IN A WATER-REFLECTED CYLINDRICAL TANK FILLED WITH BORATED-GLASS RASCHIG RINGS ####### 8
MIX-COMP-INTER-006 Pacific Northwest Laboratory 2.8 & 2.86 H:[Pu+U] REFLECTED AND UN-REFLECTED, POLYSTYRENE-MODERATED, MIXED OXIDE BLOCKS WITH AND WITHOUT FIXED ABSORBER PLATES (Copper, Copper containing 1 wt.% Cadmium, and Aluminum) ####### 2
MIX-COMP-THERM-016 Pacific Northwest Laboratory 2.8 H:[Pu+U] (with a 30.6 H:[Pu+U] driver region) REFLECTED, POLYSTYRENE-MODERATED, MIXED OXIDE BLOCKS WITH FIXED ABSORBER PLATES (Stainless Steel, Borated Stainless Steel, Depleted Uranium, Boral, Cadmium, Lead, Aluminum) ####### 19
MIX-COMP-MIXED-001 Pacific Northwest Laboratory 2.8 & 2.86 H:[Pu+U] REFLECTED AND UN-REFLECTED, POLYSTYRENE-MODERATED, MIXED OXIDE BLOCKS WITH AND WITHOUT FIXED ABSORBER PLATES (Copper, Copper containing 1 wt.% Cadmium, and Aluminum) ####### 17
MIX-MISC-THERM-005 Pacific Northwest Laboratory WATER-REFLECTED TRIANGULAR-PITCHED LATTICE OF MIXED OXIDE FUEL RODS IMMERSED IN PLUTONIUM-URANYL NITRATE SOLUTION CONTAINING BORON AND GADOLINIUM ####### 3
SPEC-MET-FAST-011 Los Alamos National Laboratory NEPTUNIUM-237 SPHERE SURROUNDED BY HIGHLY ENRICHED URANIUM AND REFLECTED BY POLYETHYLENE ####### 1
SUB-HEU-MET-FAST-001 Argonne National Laboratory-W ZPPR-20 PHASE E: A CYLINDRICAL ASSEMBLY OF U METAL REFLECTED BY BERYLLIUM OXIDE AND SAND ####### 1
SUB-HEU-MET-MIXED-001 Argonne National Laboratory-W ZPPR-20 PHASE D: A CYLINDRICAL ASSEMBLY OF POLYETHYLENE-MODERATED U METAL REFLECTED BY BERYLLIUM OXIDE AND POLYETHYLENE ####### 1
PU-SOL-THERM-018 Pacific Northwest Laboratory WATER-REFLECTED 24-INCH DIAMETER CYLINDER OF PLUTONIUM (42.9% 240Pu) NITRATE SOLUTION ####### 9
HEU-MET-FAST-047 Los Alamos National Laboratory NIOBIUM - 1wt.% ZIRCONIUM MODERATED BY POLYETHYLENE AND FUELED WITH HIGHLY ENRICHED URANIUM ####### 1
HEU-MET-FAST-076 Oak Ridge National Laboratory URANIUM (93.14 235U) METAL ANNULI AND CYLINDERS WITH THICK POLYETHYLENE REFLECTORS AND/OR INTERNAL POLYETHYLENE MODERATOR ####### 19
HEU-MET-FAST-077 Lawrence Livermore National Laboratory UNMODERATED SPHERICAL SHELLS OF HIGHLY ENRICHED URANIUM METAL REFLECTED BY BERYLLIUM ####### 8
HEU-MET-FAST-078 Los Alamos National Laboratory HEU METAL CYLINDERS, PARTIALLY REFLECTED BY WATER, POLYETHYLENE, LUCITE, AND PARAFFIN ####### 22
HEU-MET-THERM-031 Los Alamos National Laboratory 2 x 2 ARRAY OF HIGHLY ENRICHED URANIUM, MODERATED AND REFLECTED BY POLYETHYLENE ####### 1
HEU-MET-THERM-035 Lawrence Livermore National Laboratory HIGHLY ENRICHED URANIUM METAL FOILS MODERATED BY GRAPHITE: ‘SNOOPY 134’ ####### 2
HEU-MET-MIXED-012 Argonne National Laboratory-W ZPPR-20 PHASE D: A CYLINDRICAL ASSEMBLY OF POLYETHYLENE-MODERATED U METAL REFLECTED BY BERYLLIUM OXIDE AND POLYETHYLENE ####### 1
HEU-MET-MIXED-014 Oak Ridge National Laboratory URANIUM (93.14 235U) METAL ANNULI AND CYLINDERS WITH THICK POLYETHYLENE REFLECTORS AND/OR INTERNAL POLYETHYLENE MODERATOR ####### 1
HEU-COMP-THERM-021 Babcock and Wilcox WATER REFLECTED AND MODERATED UNIFORM LATTICE CORES OF ALUMINUM CLAD URANIUM OXIDE AND THORIUM OXIDE WITH AND WITHOUT BORON POISON ####### 100
IEU-COMP-INTER-003 Oak Ridge National Laboratory UNREFLECTED UF4-CF2 BLOCKS WITH 37.5% 235U ####### 9
IEU-COMP-THERM-011 Oak Ridge National Laboratory UNREFLECTED UF4-CF2 BLOCKS WITH 37.5% 235U ####### 2
IEU-COMP-MIXED-003 Oak Ridge National Laboratory UNREFLECTED UF4-CF2 BLOCKS WITH 37.5% 235U ####### 3
MIX-SOL-THERM-010 Pacific Northwest Laboratory WATER-REFLECTED PLUTONIUM-URANYL NITRATE SOLUTION CONTAINING BORON AND GADOLINIUM ####### 9
SUB-HEU-MET-THERM-001 Missouri University Research Reactor WATER MODERATED U(93.15 wt.%) ALUMINUM RESEARCH REACTOR FUEL ELEMENT SUBCRITICAL NOISE MEASUREMENTS ####### 2
PU-MET-FAST-038 Los Alamos National Laboratory PLUTONIUM SPHERE REFLECTED BY BERYLLIUM ####### 1
PU-MET-FAST-044 Los Alamos National Laboratory Plutonium (5.1 wt.% 240Pu) Metal Sphere with Beryllium, Graphite, Aluminum, Iron, and Molybdenum Tampers and Polyethylene Reflectors ####### 5
PU-SOL-THERM-034 Pacific Northwest Laboratory PLUTONIUM (8.3 wt.% 240Pu) NITRATE SOLUTION WITH GADOLINIUM IN WATER-REFLECTED 24-INCH DIAMETER CYLINDER ####### 15
HEU-MET-FAST-084 Los Alamos National Laboratory HEU METAL CYLINDERS WITH MAGNESIUM, TITANIUM, ALUMINUM, GRAPHITE, MILD STEEL, NICKEL, COPPER, COBALT, MOLYBDENUM, NATURAL URANIUM, TUNGSTEN, BERYLLIUM, ALUMINUM OXIDE, MOLYBDENUM CARBIDE, AND POLYETHYLENE REFLECTORS ####### 27
HEU-MET-FAST-085 Los Alamos National Laboratory HIGHLY ENRICHED URANIUM METAL SPHERES SURROUNDED BY COPPER, CAST IRON, NICKEL, NICKEL-COPPER-ZINC ALLOY, THORIUM, TUNGSTEN ALLOY, OR ZINC REFLECTORS ####### 6
HEU-MET-FAST-086 Los Alamos National Laboratory GODIVA-IV DELAYED-CRITICAL AND STATIC PROMPT SUPERCRITICAL EXPERIMENTS ####### 5
MIX-COMP-FAST-002 Argonne National Laboratory ZPR-6 ASSEMBLY 7 HIGH 240PU CORE: A CYLINDRICAL ASSEMBLY WITH MIXED (PU,U)-OXIDE FUEL AND A CENTRAL HIGH 240PU ZONE ####### 1
SUB-HEU-MET-THERM-002 Missouri University Research Reactor WATER MODERATED U (93.15 wt.%) ALUMINUM RESEARCH REACTOR FUEL ELEMENT SUBCRITICAL NOISE MEASUREMENTS WITH STRONG NEUTRON ABSORBING MATERIALS ####### 7
PU-MET-FAST-042 Rocky Flats PLUTONIUM HEMISPHERES REFLECTED BY STEEL AND OIL ####### 15
IEU-COMP-INTER-004 Oak Ridge National Laboratory UNREFLECTED UF4-CF2 BLOCKS WITH 30, 25, 18.8, and 12.5% 235U ####### 2
IEU-COMP-MIXED-002 Oak Ridge National Laboratory UNREFLECTED UF4-CF2 BLOCKS WITH 30, 25, 18.8, and 12.5% 235U ####### 7
LEU-COMP-THERM-028 Pacific Northwest Laboratory WATER-MODERATED U(4.31)O2 FUEL RODS IN TRIANGULAR LATTICES WITH BORON, CADMIUM AND GADOLINIUM AS SOLUBLE POISONS ####### 20
SUB-HEU-SOL-THERM-002 Los Alamos National Laboratory SUBCRITICAL NOISE MEASUREMENTS FOR TWO COAXIAL CYLINDRICAL TANKS CONTAINING 93.1% URANYL NITRATE SOLUTION ####### 3
HEU-MET-FAST-053 Oak Ridge National Laboratory POLYETHYLENE-REFLECTED ARRAYS OF HEU METAL UNITS SEPARATED BY PLYWOOD, CELOTEX, FOAMGLAS, OR BORATED PLASTIC FOAM ####### 7
HEU-SOL-THERM-026 Rocky Flats HIGHLY ENRICHED URANYL NITRATE IN ANNULAR TANKS WITH CONCRETE REFLECTION: 1 × 3 LINE ARRAY OF NESTED PAIRS OF TANKS ####### 12
IEU-COMP-THERM-009 Idaho National Laboratory POWER BURST FACILITY: U(18)O2-CaO-ZrO2 FUEL RODS IN WATER ####### 2
MIX-COMP-FAST-003 Argonne National Laboratory-W ZPR-3 ASSEMBLIES 48 AND 48B: CYLINDRICAL ASSEMBLIES OF MIXED (PU,U), GRAPHITE AND SODIUM WITH A DEPLETED URANIUM BLANKET ####### 2
MIX-COMP-FAST-004 Argonne National Laboratory-W ZPR-3 ASSEMBLY 56B: A CYLINDRICAL ASSEMBLY OF MIXED (PU,U), OXIDE AND SODIUM WITH A NICKEL-SODIUM REFLECTOR ####### 1
HEU-MET-FAST-056 Oak Ridge National Laboratory Polyethylene-Reflected Arrays of U(93.2) Metal Separated by Vermiculite ####### 1
HEU-MET-FAST-059 Oak Ridge National Laboratory Oralloy (93.15 235U) Metal Annuli with Beryllium Core ####### 2
HEU-MET-FAST-069 Oak Ridge National Laboratory Oralloy (93.2 235U) Metal Cylinder with Beryllium Top Reflector ####### 1
HEU-MET-THERM-032 Los Alamos National Laboratory ONE DIMENSIONAL ARRAY OF HIGHLY ENRICHED URANIUM, MODERATED AND REFLECTED BY POLYETHYLENE ####### 2
HEU-MET-THERM-033 Los Alamos National Laboratory 2 x 2 POLYETHYLENE REFLECTED AND MODERATED HIGHLY ENRICHED URANIUM SYSTEM WITH RHENIUM ####### 1
HEU-MET-THERM-034 Los Alamos National Laboratory 2 x 2 x 13 ARRAY OF HIGHLY ENRICHED URANIUM WITH NI-CR-MO-GD ALLOY, MODERATED AND REFLECTED BY POLYETHYLENE ####### 1
HEU-SOL-THERM-034 Oak Ridge National Laboratory WATER-MODERATED AND -REFLECTED SLABS OF URANIUM OXYFLUORIDE ####### 5
IEU-MET-FAST-015 Argonne National Laboratory-W ZPR-3 Assembly 6F: A Spherical Assembly of Highly Enriched Uranium, Depleted Uranium, Aluminum and Steel with an Average U-235 Enrichment of 47 Atom % ####### 1
IEU-MET-FAST-016 Argonne National Laboratory-W ZPR-3 Assembly 11: A Cylindrical Assembly of Highly Enriched Uranium and Depleted Uranium with an Average U-235 Enrichment of 12 Atom % and a Depleted Uranium Reflector ####### 1
IEU-COMP-FAST-004 Argonne National Laboratory-W ZPR-3 Assembly 12: A Cylindrical Assembly of Highly Enriched Uranium, Depleted Uranium and Graphite with an Average U-235 Enrichment of 21 Atom % ####### 1
LEU-MET-THERM-007 Oak Ridge National Laboratory WATER-MODERATED AND WATER-REFLECTED 0.30 IN. DIAMETER U(4.95) METAL RODS IN SQUARE-PITCHED ARRAYS ####### 6
U233-COMP-THERM-004 Bettis Atomic Power Laboratory D2O MODERATED LATTICE OF 233UO2-232ThO2 ####### 1
HEU-MET-FAST-081 Oak Ridge National Laboratory GROTESQUE: COMPLEX GEOMETRIC ARRANGEMENT OF UNREFLECTED HEU (93.15) METAL PIECES ####### 1
HEU-SOL-THERM-047 Oak Ridge National Laboratory INTERACTION OF UNREFLECTED ALUMINUM CYLINDERS IN A HEXAGONAL ARRAY CONTAINING URANYL FLUORIDE SOLUTION ####### 17
HEU-COMP-THERM-018 Bettis Atomic Power Laboratory ETA-1: D2O MODERATED LATTICE OF UO2-THO2 ####### 1
IEU-COMP-THERM-013 Idaho National Laboratory FRESH-CORE RELOAD OF THE NEUTRON RADIOGRAPHY (NRAD) REACTOR WITH URANIUM(20)-ERBIUM-ZIRCONIUM-HYDRIDE FUEL ####### 1
LEU-MET-THERM-004 Oak Ridge National Laboratory TRIANGULAR LATTICES OF 2.49 CM DIAMETER LEU (4.948) RODS IN WATER ####### 8
MIX-MET-INTER-003 Argonne National Laboratory-W ZPR-3 ASSEMBLY 54: A CYLINDRICAL ASSEMBLY OF PLUTONIUM METAL, DEPLETED URANIUM, AND GRAPHITE WITH A THICK IRON REFLECTOR ####### 1

Last reviewed: 30 November 2011