References

Sustainable solution for a pulp & paper mill, Nymölla, Sweden

Sustainable solution for a pulp & paper mill

Nymölla Bruk in Skane, Sweden, is a modern pulp and fine paper mill which is part of the Stora Enso Group’s division called Stora Enso Paper. Nymölla Bruk manufactures uncoated fine paper: document paper and paper for envelopes and printing.

Project facts

Nymölla, Sweden
Industrial
Tailor made constructions
Completion: 2018

Uponor Involvement

Weholite (PE), dimension DN/ID 1,500 mm
Project management
Fieldservices

The old outfall pipe, which was installed in 1961, was made of wood. It had begun to break in some places and was springing leaks. The bands around the pipe had rusted and begun to crack after many years of friction against the seabed, and the related maintenance costs were increasing. As a result, Stora Enso decided to replace the outfall pipe. Stefan Johansson, a Construction Project Manager at Nymölla Bruk, contacted Uponor Infra during the marine installation of a stormwater pipe for the Glasbruket housing area in Limhamn. In the Limhamn project, no external concrete weights were used for sinking the pipes. A patented profile filling method was used instead.
 
A patented method for sinking the pipes
“Nymölla was very interested in avoiding the use of external concrete weights, because fishing activities occur in the area. Weholite was chosen because it could be profile-filled with grout. This was a crucial factor when choosing Uponor,” says Stefan Johansson. Nymölla chose Weholite for the new pipe due to its ability to withstand external wear such as friction against the seabed, which was so advantageous that alternatives were ruled out. In all, 3,500 metres of Weholite dimension DN/ID1,500mm were installed, consisting of 24-metre sections of pipe.
 
A dedicated team
“The project has involved several challenges, the greatest of which was the weather and ensuring that the old pipe would continue to function as the new one was being installed. In addition, connecting the new pipe could take no longer than 5 hours.” “In collaboration with us, Uponor Infra Project Services managed to handle all these challenges. Uponor Infra’s project service team is very dedicated, competent, perceptive, reliable and fun to work with. They clearly like their job and enjoy working together,” Stefan Johansson concludes. Uponor Infra Project Service’s work involved drawings, calculations of stability, corrosion and hydraulics, as well as project management and job descriptions. The field service work consisted of detailed engineering, project management, welding pipes into 265-metre sections, profile-filling by using the Uponorpatented method, and the monitoring of sinkings. No external concrete weights were used for sinking the pipes.

A patented method for sinking the pipes
“Nymölla was very interested in avoiding the use of external concrete weights, because fishing activities occur in the area. Weholite was chosen because it could be profile-filled with grout. This was a crucial factor when choosing Uponor,” says Stefan Johansson.  Nymölla chose Weholite for the new pipe due to its ability to withstand external wear such as friction against the seabed, which was so advantageous that alternatives were ruled out. In all, 3,500 metres of Weholite dimension DN/ID1,500mm were installed, consisting of 24-metre sections of pipe.

A dedicated team
“The project has involved several challenges, the greatest of which was the weather and ensuring that the old pipe would continue to function as the new one was being installed. In addition, connecting the new pipe could take no longer than 5 hours.” “In collaboration with us, Uponor Infra Project Services managed to handle all these challenges. Uponor Infra’s project service team is very dedicated, competent, perceptive, reliable and fun to work with. They clearly like their job and enjoy working together,” Stefan Johansson concludes. Uponor Infra Project Service’s work involved drawings, calculations of stability, corrosion and hydraulics, as well as project management and job descriptions. The field service work consisted of detailed engineering, project management, welding pipes into 265-metre sections, profile-filling by using the Uponor patented method, and the monitoring of sinkings.

 

Sustainable solution for a pulp & paper mill

stora_enso_nymolla_bruk_header_tablet

Project information

Project information

Country
Sweden
Completion
2018
Project Type
Renovation
Building Type
Industrial

Partners

Partners
Stora Enso Nymölla Bruk
Product group infra
Weholite

Similar projects

Weholite yields savings and smoother implementation

Weholite yields savings and smoother implementation

New dry land fish farm which will produce 3,200 tonnes of rainbow trout annually is being build in Eckerö in the Åland Islands. Uponor Infra has provided design assistance and delivers the pipes and is responsible for their installation and welding.

Power boost for Stockholm’s district heating network

Power boost for Stockholm’s district heating network

Stockholm Exergi AB is an energy utility company that operates in Stockholm. It is jointly owned by the City of Stockholm and the Finnish energy giant Fortum Oyj. The company produces district heating, district cooling and electricity. Today, it supplies heat to approximately 800,000 in-habitants in the Stockholm region.
Extension of the district cooling station seawater intake in Helsingborg, Sweden

Extension of the district cooling station seawater intake in Helsingborg, Sweden

 The district cooling system in Helsingborg involves the streamlining of current production. By means of seawater and using heat from the district heating network to power an absorption cooling unit, district cooling provides much better environmental values than electric cooling units. The district cooling station is an efficient source of cooling for buildings, industrial facilities and shopping centres.

 

A raw water system for the new power unit

A raw water system for the new power unit

To ensure failure-free operation of a raw water system, a polyethylene-made pipeline (PEHD) with a length of approximately 9 km was installed (in mining damage conditions), of which 3 km uses the trenchless technique – relining.
A new generation biotechnology factory

A new generation biotechnology factory

The object for the largest investment in the Finnish forest industry has been completed. Metsägroup's pulp mill in Äänekoski started operations in August 2017. Uponor Infra was involved in building a new generation bio mill.
Stora Enso Nymölla mill biogas facility

Stora Enso Nymölla mill biogas facility

Stora Enso Nymölla Mill in southern Sweden produces pulp- and wood-free uncoated paper and is the second largest paper manufacturing company in Europe. Nymölla Mill belongs to the "Paper" division and has an annual capacity of 340,000 tonnes of pulp and 485,000 tonnes of paper. The mill started in 1962 and has 540 employees. The paper manufactured by Nymölla Mill is recyclable, renewable and biodegradable. Approximately 90% of Nymölla Bruk's paper brands have eco-label certification that certifies the products' reduced environmental impact during the product's life cycle. Paper products from Stora Enso are available all over the world.
 
Fish farming with the smallest possible footprint

Fish farming with the smallest possible footprint

Andfjord Salmon AS, a Norwegian fish farming company, has the ambition to create a sustainable, environmentally and fish-friendly onshore facility – with the smallest possible footprint. This patented facility combines the best from both traditional ocean net-pens and land-based salmon farming. The intake and outfall lines are built with highly durable Weholite PE pipes and panels with a 100-year life span.