Structure of PWR Primary Corrosion Products

Characterization of the surface charge of oxide particles of PWR primary water circuits from 5 to 320°C

“…In the present study, we have chosen to work on model particles of the highest purity and with a known chemical composition and structure, so as to be able to understand and model more easily their behavior. Three colloidal species, which are characteristic of primary circuits of PWR [9,10] were chosen: magnetite (Fe 3 O 4 ), nickel ferrite (NiFe 2 O 4 ) and cobalt ferrite (CoFe 2 O 4 ). In the present investigation, the study of the influence of the composition of the solution was limited to concentrations of a salt (potassium chloride) that do not lead to specific adsorptions.…”

Residence Time of Crud on Surfaces of Channel Box in JPDR

“…The results on the X-ray diffraction pattern 23 ). One possible expanation is that the crud analyzed is the crud in the inner layer as discussed later, and hence it is protected against oxidation.…”

“…The former value is comparable to the value of the reactor design data, 1.42 x 10 13 s-1 ·cm-2 ( 6 Figure 6 shows the calculated curves of the specific activity of the elements upon exposure to the neutron flux of the present values. The operation of the reactor started at Oct. 23,1963 and terminated at Sep. 9, 1969, but the net operation time was 556 d( 6 ). Thus, in the abscissa of the figure the net operation time is plotted.…”

Residence time of crud on surfaces of channel box in JPDR.

“…Residence Time Figure 6 shows the calculated curves of the specific activity of the elements upon exposure to the neutron flux of the present values. The operation of the reactor started at Oct. 23,1963 and terminated at Sep. 9, 1969, but the net operation time was 556 d( 6 ). Thus, in the abscissa of the figure the net operation time is plotted.…”

“…Wavenumber (cm- 23 ). One possible expanation is that the crud analyzed is the crud in the inner layer as discussed later, and hence it is protected against oxidation.…”