Critical separation between subcritical clusters of 4. 29 wt % /sup 235/U enriched UO/sub 2/ rods in water with fixed neutron poisons
Technical Report
·
OSTI ID:6854523
Measurement data are presented from a series of criticality experiments on systems simulating fuel element shipping containers and fuel storage basins. The conditions investigated involve clusters of 4.29 wt% /sup 235/U enriched UO/sub 2/ fuel rods immersed in water. The number of rods required for criticality in a square lattice spacing (25.4 mm) near optimum neutron moderation and the critical separation between three subcritical clusters aligned in a row was determined. The effect that the following fixed neutron absorbers had on this critical separation was also measured: 304L steel with 0, 1.1, and 1.6 wt% boron; boral; copper with 0 and 1 wt% cadmium; cadmium; aluminum; and zircaloy-4. The fuel rods are 12.649 mm in dia, clad in 0.660 mm thick, 12.827 mm ID aluminum tubing and varied in length from 914 mm to 927 mm. The neutron absorbers are in the form of plates and are positioned between the fuel clusters such that no line of sight existed between the clusters. Measurements were made with each absorber plate located approximately midway between the fuel clusters and with the plates near the respective cell boundary of the center fuel cluster.
- Research Organization:
- Battelle Pacific Northwest Labs., Richland, Wash. (USA)
- DOE Contract Number:
- EY-76-C-06-1830
- OSTI ID:
- 6854523
- Report Number(s):
- NUREG/CR-0073
- Country of Publication:
- United States
- Language:
- English
Similar Records
Critical Separation Between Subcritical Clusters of 4.29 Wt% 235U Enriched UO2 Rods in Water with Fixed Neutron Poisons
Critical separation between subcritical clusters of 4. 29 wt % /sup 235/U enriched UO/sub 2/ rods in water with fixed neutron poisons. Technical topical report
Critical separation between subcritical clusters of 2. 35 wt 235/U enriched UO/ 2/ rods in water with fixed neutron poisons
Technical Report
·
Tue Feb 28 19:00:00 EST 1978
·
OSTI ID:6759250
Critical separation between subcritical clusters of 4. 29 wt % /sup 235/U enriched UO/sub 2/ rods in water with fixed neutron poisons. Technical topical report
Technical Report
·
Mon May 01 00:00:00 EDT 1978
·
OSTI ID:6545968
Critical separation between subcritical clusters of 2. 35 wt 235/U enriched UO/ 2/ rods in water with fixed neutron poisons
Technical Report
·
Fri Sep 30 20:00:00 EDT 1977
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OSTI ID:5357016
Related Subjects
42 ENGINEERING
420203* -- Engineering-- Handling Equipment & Procedures
ACTINIDE COMPOUNDS
ACTINIDES
CHALCOGENIDES
CRITICALITY
ELEMENTS
ENRICHED URANIUM
FUEL ELEMENTS
HYDROGEN COMPOUNDS
ISOTOPE ENRICHED MATERIALS
METALS
MODERATORS
NEUTRON ABSORBERS
OXIDES
OXYGEN COMPOUNDS
REACTOR COMPONENTS
RODS
SIMULATION
SLIGHTLY ENRICHED URANIUM
STORAGE
TRANSPORT
URANIUM
URANIUM COMPOUNDS
URANIUM DIOXIDE
URANIUM OXIDES
WATER
420203* -- Engineering-- Handling Equipment & Procedures
ACTINIDE COMPOUNDS
ACTINIDES
CHALCOGENIDES
CRITICALITY
ELEMENTS
ENRICHED URANIUM
FUEL ELEMENTS
HYDROGEN COMPOUNDS
ISOTOPE ENRICHED MATERIALS
METALS
MODERATORS
NEUTRON ABSORBERS
OXIDES
OXYGEN COMPOUNDS
REACTOR COMPONENTS
RODS
SIMULATION
SLIGHTLY ENRICHED URANIUM
STORAGE
TRANSPORT
URANIUM
URANIUM COMPOUNDS
URANIUM DIOXIDE
URANIUM OXIDES
WATER