Summary of Criticality Data Obtained at Battelle Pacific Northwest Laboratories on Fixed and Soluble Poisons in U+Pu Nitrate Solutions

Technical Report · Thu Apr 01 00:00:00 EST 1976

DOI:https://doi.org/10.2172/7347778· OSTI ID:7347778

Lloyd, R. C. ^[1]; Clayton, E. D. ^[1]

---

1. Battelle Pacific Northwest Labs., Richland, WA (United States)

Knowledge of the effects of neutron poisons on U+Pu systems is necessary to better establish criticality safety programs. These data are needed in setting of criticality safety specifications for storage, processing and shipping of fissile material where it is desired to handle larger quantities with safety and efficiency. These data are needed also for validating calculational techniques and cross sections sets. U+Pu solutions containing 30% Pu in the total U+Pu were used in these experiments to determine the effect of neutron poisons. Criticality of heterogeneous systems of UO₂-PuO₂ rods in a lattice were studied when the U Pu solutions with various amounts of Gd and+B were added to the system. Criticality of homogeneous systems of the U+Pu nitrate were determined with varying amounts of Gd and Gd+B added to the solution. Measurements were made to determine also the effect of boron-glass raschig rings on the criticality of the U+Pu nitrate solution systems.

• Research Organization: Battelle Pacific Northwest Labs., Richland, WA (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA), Nuclear Criticality Safety Program (NCSP); US Energy Research and Development Administration (ERDA)
• DOE Contract Number: E(45-1)-1830
• OSTI ID: 7347778
• Report Number(s): BNWL-B-482; TRN: 76-017659
• Country of Publication: United States
• Language: English

Related Subjects

11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
PLUTONIUM NITRATES
CRITICALITY
URANIUM NITRATES
BORON
COLUMN PACKING
GADOLINIUM
NUCLEAR POISONS
PLUTONIUM DIOXIDE
RODS
SAFETY
SOLUTIONS
URANIUM DIOXIDE
ACTINIDE COMPOUNDS
CHALCOGENIDES
DISPERSIONS
ELEMENTS
METALS
MIXTURES
NITRATES
NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PACKINGS
PLUTONIUM COMPOUNDS
PLUTONIUM OXIDES
RARE EARTHS
REACTOR MATERIALS
SEMIMETALS
TRANSURANIUM COMPOUNDS
URANIUM COMPOUNDS
URANIUM OXIDES
Nuclear Criticality Safety Program (NCSP)
Criticality
Uranium
Uranium Nitrates
Plutonium
Boron
Solutions
Neutron
Poisons
Safety
Summary
420203* - Engineering- Handling Equipment & Procedures