Zero Power Experiments with ²³⁵U-Enriched Thoria and Thorium Metal Lattices for the HWOCR

Technical Report · Wed Nov 01 04:00:00 EST 1967

DOI:https://doi.org/10.2172/4546883· OSTI ID:4546883

Pellarin, D. J. ^[1]; Baumann, N. P. ^[1]; Crandall, J. L. ^[1]; O'Neill, G. F. ^[1]; Satterfield, R. M. ^[1]

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1. Du Pont de Nemours (E.I.) and Co., Aiken, SC (United States). Savannah River Lab.

Lattice physics experiments were performed in the Process Development Pile (PDP) and the Subcritical Experiment (SE) to investigate thorium loadings for the Heavy Water Organic Cooled Reactor (HWOCR). The test fuel assemblies consisted of 85-rod clusters of THUD fuel, aluminum-clad rods of 0.234-inch UO₂-ThO₂ pellets with at Th/²³⁵U ratio of 49.03, and of coaxial U-Th metal tubes with approximately the same Th/²³⁵U ratio. These fuel assemblies were arranged into regular lattices at pitches of 9.0, 9.5, 10.5, and 12.12 inches in D₂O and tested with D₂O, air, and "Dowtherm" A occupying the fuel coolant channels.

• Research Organization: Du Pont de Nemours (E.I.) and Co., Aiken, SC (United States). Savannah River Lab.
• Sponsoring Organization: US Atomic Energy Commission (AEC); USDOE National Nuclear Security Administration (NNSA), Nuclear Criticality Safety Program (NCSP)
• NSA Number: NSA-22-020807
• OSTI ID: 4546883
• Report Number(s): DP--1125
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANALYSIS
CONFIGURATION
CRITICAL ASSEMBLIES
DETERMINATION
ENRICHMENT
FUEL ELEMENTS
HEAVY WATER MODERATOR
HWOCR
MEASUREMENT
N38110* --Power Reactor Development--Kinetics & Dynamics
Nuclear Criticality Safety Program (NCSP)
ORGANIC COOLANT
REACTOR CORE
REACTORS
THORIUM
THORIUM OXIDES
Thorium alloys
Thorium oxides
URANIUM 235