Effect of Oxidation Rate On Hydriding of Zirconium Alloys In Gas Mixtures Containing Hydrogen

Framework model for hydrogen redistribution in Zircaloy sheathing

“…Table 4 indicates that, in principle, a virtually pure hydrogen environment is required for hydriding to occur. This main conclusion, that the water vapour concentration must be very low for hydriding to pre-empt oxidation, resonates with the experimental results of numerous other researchers [16][17][18][19].…”

Demonstration of fuel resistant to pellet-cladding interaction. First semiannual report, July-December 1977

“…For iodine test conditions the average diametral strain at failure was independent of liner thickness, and was 80% higher for Zr-lined Zircaloy-2 compared to unlined Zircaloy tubing (see Figure 6. [1][2][3][4][5][6][7][8][9]. Results were obtained for solid cadmium test conditions, as shown in Figure 6.1-10.…”

“…GEAP-23773 Table 6.3-1 for details * Fifteen minute hold times between ramp steps (see Figure 6. [3][4][5][6] ^ Achieved at high burnup end of rod during ramp test of mating rod. Not intentionaUy ramped (see Figure 6. ''…”

“…The metallographic sections were all taken at cladding ridges (see e.g.. Figure 6. [3][4][5][6][7][8][9][10][11][12] or PEC signal locations. Each transverse specimen was examined at five planes separated by 0.020 -0.025 inch with the middle plane coinciding with the feature of interest (ridge or PEC signal).…”

High-pressure hydriding of Zircaloy cladding by the thermogravimetry and tube-burst techniques

“…This method avoids the edge effect that causes difficulties in the thermogravimetric test method. Both the thermogravimetric and the tube-burst methods utilize realistic pressures (70 bar), thereby avoiding the atypical atmospheric or sub-atmospheric pressures used in the previous laboratory experiments [15][16][17].…”