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U.S. Department of Energy
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NUCLEAR SUPERHEAT DEVELOPMENT PROGRAM. Seventh Quarterly Progress Report, January-March, 1961

Technical Report ·
OSTI ID:4837271
An alternate reactor arrangement was developed to permit the use of mechanical steam separators to supplement gravitational separation. An alternate NUSU reference design using annular multitube elements and a Hy-Ball control system is being worked up. Power flattening by Hy-Ball control systems was investigated in both the axial and radial directions. A preliminary investigation of the heat-transfer characteristics of annular multitube fuel elements was initiated, using the relaxation method. Criticality data collected for various cores containing double-annular fuel elements are presented for both flooded and voided conditions. An analytical method was developed which accurately predicts criticality, water-gap peaking, and power distribution for cores with both rod-type and double-annular elements. Test results of steam separators are described. A program for testing double-annular fuel elements is described. (D.L.C.)
Research Organization:
Combustion Engineering, InC., windsor, Conn.
NSA Number:
NSA-15-032981
OSTI ID:
4837271
Report Number(s):
GENEC-172
Country of Publication:
United States
Language:
English