All the latest news from Europe Pump efficiency restored at Iceland fish farm
LOCATED in the Southwest corner of Iceland beside the Atlantic Ocean is one of Stofnfi skur’s salmon broodstock farms. This farm located in a place called Vogar was originally established in 1986 produces Salmon Ova which are sold to domestic and International hatcheries for fi sh farming, says a report in IPE.
The facility houses 25,000m3 tanks in 10 massive sheds used for the
breeding of salmon and production of salmon ova. Each tank holds tens of thousands of litres of water delivered constantly by an army of centrifugal pumps. Stofnfi skur started to work with Velar, the Distributor of Belzona prod- ucts in Iceland, in 1999 after a presentation of Belzona products done by Velar. Previous experience had shown that after a period of two years, the pumps which were in constant daily use recycling the water in the tanks became corroded and lost effi ciency. Following discussions with Ragnar Karlsson, of Velar, it was decided that to protect the pumps and extend their working lives, they would be coated internally with Belzona 1341 (Supermetalglide) before entering service as part of a preventative maintenance programme. 15 years later the original pumps that were coated in 1999 are still in service today. Belzona 1341 is an epoxy coating system developed to improve pump effi ciency, eliminate corrosion and decelerate erosion. Due to its ultra-smooth, self-levelling and hydrophobic properties, as well as its low surface energy, it has been proven in independent tests to reduce turbu- lence and surface tension. At the same time, the coating will protect the component against future corrosion, meaning that its immediate effects on performance will be maintained over a long period, reducing power consumption and saving operating costs. These friction losses translate into effi ciency increases and ultimately in a cost saving for the custom- er. On new pumps, effi ciency increase as much as 7 per cent has been
Broodstock farm pumps in Vogar
tested and recorded. In the case of Stofnfi skur, this cost saving was signifi cant. They currently
have 154 pumps working in all their fi sh farm stations, consuming ap- proximately 1MW of electricity per month. 80 per cent of these pumps handle the water in the tanks and are between 0.55-30kW. The rest are borehole pumps used to extract clean and in some cases slightly salted water from beneath the surface.
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