Civil Engineering Reference
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95 kW. In order to anticipate possible unsafe situations the ammonia
concentration was continuously measured; in the event of the concentra-
tion being too high, the process stopped and a water basin neutralized the
ammonia that had flowed out. If such a precaution had not been taken, then
the fitting of a freezing installation in a tunnel under construction - an area
which only has limited ventilation possibilities, could not have been possible
at all.
Fig. 13.12a
The freezing
installation and piping
Fig. 13.12b
The freezing
installation and piping
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