643727.fig.003a
(a)
643727.fig.003b
(b)
Figure 3: Parts of the SGs 46 (left, feed water dispersion tube) and 35 (right, feed water dispersion box). The places, where samples were scraped from, are marked with the corresponding number (see Table 2) [1, 3, 11, 19, 20]. No. 9 of SG46 can be found inside the tube.