Instability Studies With Ebr-I, Mark Iii

Preliminary characterization of the histamine releasing activity of cotton dust

“…Thin layer chromatography on cellulose plates in butan-1-01, acetic acid, water (4,1,5, v/v) separated the HRA into three areas of R, 0.73(A), 054(B) and 0.17(C) respectively. Spot A was lime-green in colour and gave a positive reaction for phenols and tannins (ferric chloride-ferricyanide reagent ; Smith, 1960). The absorption spectrum and chromatographic mobility of this spot were identical to those of the flavonoid, rutin which has previously been found in the cotton plant (Greensmith, 1969).…”

A US perspective on fast reactor fuel fabrication technology and experience part I: metal fuels and assembly design

“…One at.% of burnup corresponds to roughly 9.4 GWd/MTHM. Important result Loss of reactivity with time Partial melting of the core [14] Improved stability of the fuel [15] More compact core [16] Impurity level amounts (200-500 ppm) of Si were alloyed with the Mark-I metal fuel to minimize the fission gas release, thereby minimizing the cladding stresses that occurred as the fuel swelled radially against the cladding and axially against engineered fuel lift-off restraints. Although minimized by techniques such as Si additions, these swelling-induced stresses led to limitations of the useful lifetime of Mark-IA metal fuels [9,12].…”

Terminal Report for the Mark Iv (Plutonium) Loading in Ebr-I

“…(10) As the result of a comprehensive experimental program, concerned mainly with transfer-function and power-coefficient measurements, it was concluded that those features responsible for the instability noted in the earlier loadings could be eliminated by rather elementary changes in mechanical design. (11)(12)(13) The operation of the Mark IV core, fueled entirely with plutonium, introduced a variety of problems which required careful scrutiny before loading and eventual operation. (14) Although many problems were of a more or les s conventional nature, others were complicated by physical, chemical, and neutronic properties peculiar to plutonium.…”