Effects of process-generated hydrogen on RPV walls

2. Findings in Doel 3 and Tihange 2

Figure 2.4: Representation of the MIS-B machine used to perform the UT inspection on the RPV wall of Doel 3. [1]

Figure 2.5: Distribution of the detected indica- tions in the RPV wall of Doel 3 during the UT inspection performed in 2012. [1]

Figure 2.6: Distribution of the detected indications in the RPV wall of Doel 3, over a cumulated angle of 20 ◦ , as a function of depth and height during the UT inspection performed in 2012. The orange indications are measured to be larger compared to the pink indiations. The axes give the depth in the material in mm (x-axis) and the inverse height in the RPV in mm (y-axis). The indications are found deeper in the RPV wall for increasing height. [1]

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