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All of the cracks that were identified in the cut-outs were open to the interior surface;
interior, non-surface breaking cracks were not found. Figure 3 indicates the cut
surface, with cracks indicated by arrows.
Figure 3:
Wall cross section, showing the crack depth and morphology.
Figure 4:
Significant branching of the cracks, with corrosion products. Inside surface of
reactor at the right hand side of the image.
1 mm
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