QUARTERLY REACTOR TECHNOLOGY REPORT NO. 2 FOR APRIL, MAY, JUNE 1957

Technical Report · Fri Oct 31 04:00:00 EST 1958

OSTI ID:4356989

Additional neutron distribution studies were made using both spiked and unspiked U-polyethylene assemblies. Calculations of energy distributions of inelastically scattered fission neutrons were extended to Al, Ni, Cr, Fe, and Zr. A 704 digital computer program, SPY, developed for simulating the transient behavior of a two-pass pressurized water reactor is described. Neutron spectrometer studies of U/sup 233/ included eta studies from 1 to 30 ev, studies of fission neutron count vs energy, and total cross section measurements. A flow study was conducted on a half-scale model of a reactor inlet plenum to determine the effects of baffles on eddies and vortices. The results indicate the flow distribution improvement with baffles is not worth the pressure drop penalty of 5 psi. Further studies of the heat transfer characteristics of twisted ribbon fuel elements are reported. Post-irradiation bend test results are presented which indicate the effects of radiation on dispersion-type control materials. The materials tested were Eu/sub 2/O/sub 3/-stainless steel, Gd/sub 2/O/sub 3/-Ti, and Gd/sub 2/O/sub 3/-stainless steel. Tables of Hf physical properties and corrosion behavior in water are given, and melting and fabrication methods developed for Hf are outlined. Development of composite control rods, Hf - TiB/ sup 10/ dispersion-Ti-Ti clad, was continued with studies of fabrication, metallurgical properties, corrosion properties, and neutron absorption. Initial studies of the effects of coolant flow rates on the deposition of corrosion products on fuel elements in pressurized water reactors are reported. (For preceding period see KAPL-1770.) (D.E.B.)

• Research Organization: Knolls Atomic Power Lab., Schenectady, N.Y.
• DOE Contract Number: W-31-109-ENG-52
• NSA Number: NSA-12-000559
• OSTI ID: 4356989
• Report Number(s): KAPL-1803
• Country of Publication: United States
• Language: English

Related Subjects

ABSORPTION-- BORON 10-- CONTROL ELEMENTS-- COOLANTS-- CORROSION-- DEFORMATION-- DEPOSITS-- EUROPIUM OXIDES-- FABRICATION-- FLUID FLOW-- FUEL ELEMENTS-- HAFNIUM-- HAFNIUM COMPOUNDS-- IRRADIATION-- MATERIALS TESTING-- MECHANICAL PROPERTIES-- MELTING-- METALLURGY-- NEUTRONS-- PRESSURE-- RADIATION EFFECTS-- REACTORS-- TITANIUM ALLOYS-- TITANIUM BORIDES-- WATER
ALUMINUM-- CHROMIUM-- CRITICAL ASSEMBLIES-- DIGITAL SYSTEMS-- DISTRIBUTION-- ENERGY-- FAST NEUTRONS-- IRON-- NEUTRON FLUX-- NEUTRONS-- NICKEL-- POLYETHYLENES-- PRESSURE-- REACTORS-- SCATTERING-- TRANSIENTS-- URANIUM- - WATER COOLANT-- ZIRCONIUM
COUNTERS-- CROSS SECTIONS-- ENERGY-- ENERGY
PHYSICS