Building one of the world’s largest smolt plants - again!

Krüger Kaldnes, a Veolia Water Technologies subsidiary specialized in aquaculture, has recently commissioned one of the world’s largest post-smolt RAS facilities for Lerøy Sjøtroll Kjærelva, located in Fitjar, Norway. The facilities were designed according to the highest standards, with a strong focus on biosecurity, fish logistics, and footprint.

Lerøy Sjøtroll Kjærelva is a compact and efficient plant with a high focus on industrialization as well as a safe display of production for visitors.

About the facilities

The plant is made of twelve departments with two separate production lines. Each line consists of a hatchery, as well as Kaldnes® RAS departments for starting lining, growth, presmolt, and post-smolt. All RAS departments have the option of salinity adjustment. The delivery also includes all necessary support systems, such as freshwater and seawater inlet cleaning, energy plants, lime systems for PH regulation, vessel lighting, casing, dead fish and sludge plants. The plant is automated with PLS controls and control rooms (SCADA) and also includes a system for maintenance planning and management (MimerVA).


A turnkey solution

Krüger Kaldnes prides itself with developing solutions for complete delivery of land-based fish farms in collaboration with a building contractor, and it was indeed the case with the Lerøy Sjøtroll Kjærelva plant. Frederic Gaumet, aquaculture sales manager for Krüger Kaldnes, said: “We already had a good collaboration with the civil company, TotalBetong, so we chose to deliver an optimized solution where, together, we offered acomplete turnkey solution. In addition, we managed to propose a plant with a higherproduction capacity than was originally planned, and that made Lerøy interested.”

The company’s focus is on high quality, biosecure fish production and optimal logistics to create well-designed facilities for its clients. The key to success lies in a close cooperation with clients during the pre-project planning phases as well as throughout the project execution.
‘‘This close collaboration makes for a very detailed and intense planning process. Several face-to-face meetings were held over a period of 2-3 months during which all the parties involved worked together on the solution. After the meeting, everyone would work separately to finish their “homework” in order to prepare for the next meeting’’ continued Gaumet.

Every detail was covered, from design to challenges like logistics of moving fish, people and visitors, management of technical equipment, how water would be transported inside and outside of the facility, what level of particle filtration was desired, how the ventilation system would be configured, etc.

Frederic Gaumet concluded: ‘‘Our joint project team with Total Betong has worked very closely with the Lerøy Expert Group to meet client’s requirements and expectations. It has been a very good process where the strength of both parties has contributed to a successful outcome.

Construction start: May 2017
Completion: Spring 2019 (2020 will be the first full year of production)
Capacity: 7 million 500 gr. post-smolt -  5.5 million 160 gr. smolt
First delivery of smolt: 2019
Maximum feeding: 21.6 tons/day
Total fish tank volume: 24,200 m3
Total building area: 20,200 m3