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THE PHYSICAL PARAMETERS OF THE AQUEOUS HOMOGENEOUS REACTOR AS FUNCTIONS OF TEMPERATURE AND REFLECTOR THICKNESS

Journal Article · · "J. Stefan" Inst. Repts. (Ljubljana)
OSTI ID:4223048
The critical radius in mass for aspherical homogeneous reactor of zero power with uranium enriched to 20% (UO/sub 2/SO/sub 4/ compound) with moderator was calculated. These calculations were carried out for various infinite reflectors (ordinary and heavy water. graphite) and for various finite thickness of reflector made of heavy water in the temperature range from 25 to 200 deg . The effect of reflector thickness made of heavy water on the reactivity was determined for the case of an infinite cylinder. It turns out that at zero power the critical dimensions of a spherical reactor with finite reflector of heavy water are less even at 200 deg than for the same reactor at 25 deg C, but without a reflector. Particular attention is paid to problems of operation and control of the reactor at different temperatures by varying the size of the reflector. For this purpose a reflector thickness of 30 to 40 cm is found to be fully adequate. The conclusions must be verified experimentally.
Research Organization:
Originating Research Org. not identified
NSA Number:
NSA-13-023082
OSTI ID:
4223048
Journal Information:
"J. Stefan" Inst. Repts. (Ljubljana), Journal Name: "J. Stefan" Inst. Repts. (Ljubljana) Vol. Vol: 3
Country of Publication:
Country unknown/Code not available
Language:
English