HEAVY WATER MODERATED POWER REACTORS. Progress Report for May 1961
ABS>Fabrication of the reactor vessel for the Heavy Water Components Test Reactor was completed during May, and the vessel was subjected successfully to a hydrostatic test. At Savannah River, low temperature irradiations of five Zircaloy-clad tubes of unalloyed uranium were concluded, and postirradiation examinations of the tubes were started. Four extruded joints of Zircaloy and sthinless steel were cold worked as much as 40% without apparent damage to the interface of the two materials. In burnout tests with boiling water at 1000 psi, a higher heat flux was obtained for a 7-rod assembly having spacing wires spirally wrapped on the rods than for an assembly having intermittent protuberances as spacers. In experiments on the stability of boiling water flow, the amplitude of boiling flow fluctuations was tentatively correlated with exit steam quality and with the inlet flow resistance. (auth)
- Research Organization:
- Du Pont de Nemours (E.I.) & Co. Atomic Energy Div., Wilmington, Del.
- NSA Number:
- NSA-15-025633
- OSTI ID:
- 4014576
- Report Number(s):
- DP-625
- Country of Publication:
- United States
- Language:
- English
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