Hoseth Technology's Prolog tanks are in some cases an efficient and elegant alternative to Helix tanks for cooling and storage. This applies when the units are only filled and emptied 1-2 times per day and are not part of a continuous process. Furthermore, the Prolog tanks can be placed outdoors and you can therefore save large construction costs. Since the Prolog tanks are part of a closed system system, automatic washing of both the tanks and the pipe system from a central CIP is planned.
The principle for filling and emptying the tanks makes the system independent of heights in the plant.
When a tank is fully loaded it contains 2/3 fish and 1/3 water, circulated via a RSW or slurry ice solution. Cooling and thereby the fish quality i optimized using a sophisticated circulation pattern that also prevents squeezing of fish near the bottom of the tank. Fish are being loaded into the tank using under pressure and water circulation from a hopper tank where fish are made available. Offloading is done by using over pressure and water circulation to a dewatering unit where the fish are to be delivered.
