References

Heavy-duty pipe for Tallinn’s district heating network, Tallinn, Estonia

Heavy-duty pipe for Tallinn’s district heating network

Large-scale construction has been the norm in Lasnamäe, the largest district of Estonia’s capital city Tallinn. Now that they are renovating the district heating network, the pipes are also amply sized. A total of 1.1 kilometres of pre-insulated pipes with a diameter of DN 1,000 will be installed in the area.

Project facts

Tallinn, Estonia
Municipal
Heating and cooling
Completion: 2015

Uponor Involvement

1,1 km of district heating pipes DN 1,000

Lasnamäe is the largest of the eight districts of Tallinn. The residential area located in the eastern part of the city has over 118,000 residents, and it is known, among other things, for its large prefabricated buildings that date back to the Soviet Era, in the 1980s. Lasnamäe has become accustomed to thinking big. Now that they are renovating the district heating network, the pipes are also amply sized.

Uponor Infra will supply Lasnamäe with a total of 1.1 kilometres of district heating pipes with a diameter DN 1,000. The steel pipes are insulated with polyurethane, and they have a 1,200mm plastic protective covering.

The customer is Küte ja Ehitus AS, while the end customer is the owner of the district heating network, AS Tallinna Küte. Vjatšeslav Kovaltšuk, Director of the development department of Küte ja Ehitus AS, says that this will not quite be the Estonian record for pipe size, but it comes pretty close.

“The largest pipes installed in Tallinn are in the size category DN 1,200. They were needed in the early 1970s when the Iru power plant was built near the city. At that time, the plant had to supply heating power for the entire city.”

“Today, systems are more modern and the city does not need as much energy. With the district heating network now being renovated, preinsulated DN 1,000 pipes are sufficient,” Kovaltšuk states.

Two sites at the same time

Küte ja Ehitus AS is renovating the district heating pipes for Lasnamäe at two different locations. “In the Smuuli area, we are renovating the pipes because a new intersection is being built there. It makes sense to renovate the main pipeline at the same time. Later, if we ran into problems with the old pipes, repairing them would be much more laborious and expensive.”

“Near the Peterburi tee, the pipes are already in such bad condition that they need to be replaced. Lately, there have been several pipe breaks and leaks in the area.” Founded in 1993, Küte ja Ehitus AS is Estonia’s largest engineering company specialising in the design, construction and renovation of heating energy infrastructures and fire safety systems. Its customers mainly comprise energy conglomerates, industrial facilities and main contractors of large buildings.

Moreover, the company is expanding outside the Estonian borders. From the beginning of next year, the company’s name will change to KE Infra.

Long history of cooperation

Küte ja Ehitus selected pipes from Uponor Infra for the contract based on its previous good experiences. “We have worked in cooperation with Uponor for a long time, now. This year alone, Uponor has supplied us with pipes and components for twelve different projects in Tallinn,” mentions Vjatšeslav Kovaltšuk. “We have been very satisfied with the quality of the pipes, and the price level is competitive as well.”

Kovaltšuk notes that the schedule has been extremely tight in the Lasnamäe contract.

“The manufacturing and transport of large pipes and installation components has been challenging. The experienced project team and Uponor professionals have; however, managed to meet the stringent requirements without having to compromise on quality or scheduling.”

“The contracts must be completed during the summer season. Work began in July, and it is scheduled to be finished by the end of September at the latest, when the heating season begins.”

A lot of logistics to consider

According to Project Manager Jan-Erik Svarvén from Uponor Infra’s Industry and Energy Plant Sales, the steel company SSAB delivers 16-metre steel pipes to Uponor Infra’s Vaasa plant, where they are insulated.

“The manufacturing of large pipes requires significant lifting capacity as well as foam machines that are capable of spraying the required, larger than usual, amount of urethane in one go. Not all manufacturers have the means for this,” Svarvén points out.

Uponor also delivered 44 elbows to Tallinn, the largest of which are up to 4x2 metres in size. Also crossing the Bay of Finland are, for instance, two pre-insulated 3.6x2 metre T-branches with a wall thickness of 20 millimetres. The T-branches will connect the two main lines in Lasnamäe. “The transportation has required a lot of arrangements, as only three pipes or four elbows fit into one vehicle. We had to build a special bed for the T-branches, wider than a regular lorry bed,” Svarvén describes.

Pre-insulated valves, for example, are also used in Lasnamäe. “We have designed the valves in cooperation with the customer and the valve supplier. We want to ensure that the customers get exactly what they want," Jan-Erik Svarvén emphasises.

In the Smuuli area, a nonconventional solution will be used on the line: The DN 1,000 pipe will be installed in a concrete channel in the location of the bridge, as there was no room to excavate at the location.

“We also had German engineers involved in the planning of this solution with us,” Kovaltšuk says.

Installation requires a lot of space

The excavation and installation work of large pipes naturally requires a lot of space. “At times, it is difficult to get permission from the local traffic department for closing off roads that are heavily trafficked. The planning and preparation phase of this kind of work takes a significant amount of time.”

Kovaltšuk says that in Lasnamäe, they do not usually run into the same problems as in the Medieval Old Town; there, the museum authorities interrupt work immediately, if excavations reveal something with historical significance. This naturally causes project delays.

“And as we are operating in a city, we also receive complaints from the residents every now and then. It is understandable, as the installation work always causes a certain amount of noise.”

“However, we attempt to find compromises that ensure that the work causes as little disturbance to the environment as possible.”

Heavy-duty pipe for Tallinn’s district heating network

tallinn1_viro

Project information

Project information

Country
Estonia
Completion
2015
Project Type
Renovation
Building Type
Municipal

Similar projects

TV-Tower, Estonia

TV-Tower, Estonia

The tallest building in Estonia and the major cultural attraction, the Tallinn TV-Tower, is equipped with Uponor underground ventilation technology.
 New Uponor IQ –Storm water system - Sustainability and Quality in Road Infrastructure

New Uponor IQ –Storm water system - Sustainability and Quality in Road Infrastructure

In December 2011 Central Finland´s ELY –centre (The Centre for Economic Development, Transport and the Environment) started significant road constructing project in Jyväskylä. The aim is to create a new route between highways 18, 9 and 4, which helps reduce traffic jams and smoothes commutation. Uponor was chosen to be one of the suppliers due to our delivery capacity and overall cost efficiency.
New water pipeline

New water pipeline

Uponor Barrier PLUS pipes ensure a safe main water supply in Mikkeli in the old industrial area, where numerous new apartment buildings will be built in the next few years.
Hybrid solutions for storm water management

Hybrid solutions for storm water management

City of Lahti is building new neighborhood called Ranta-Kartano. While they were constructing basic infrastucture the city saw the possibilty to reserve some ground space for storm water management. Now there is a test running for different kind of storm water management. Uponor is involved with new type of storm water filter.

An easy and reliable storm water solution

An easy and reliable storm water solution

The new loading and parking area of Volvo’s central warehouse in Vantaa was asphalted, which called for a solution to effectively and reliably channel storm water from the area. Uponor’s new IQ infiltration pipes were selected as the solution to infiltrate and delay storm water on the plot.
Now that’s truly FAST

Now that’s truly FAST

Uponor IQ stormwater solution was installed in the Rakokivi's new community centre in Nastola, Lahti, so quickly that it surprised everyone involved.
Flow measurement reveals leaks in the water supply network

Flow measurement reveals leaks in the water supply network

The Water Monitoring Services developed by Uponor Infra enable real-time monitoring of water supply networks – deviations in the network can then be detected and located quickly. Pori, a coastal city in southern Finland, started monitoring an area on the periphery of its water supply network where leaks had caused problems over the years.
Secure tunnel trunk lines

Secure tunnel trunk lines

The safety requirements of the Kamppi-Erottaja-Kruununhaka tunnel built by Helsingin Energia are of the highest level. The contractor Destia selected the former KWH Thermopipe TSC Welding Sleeves for pipe joints. The end result is a pipeline where the insulation and surface material are uniform.
Life is grand for graylings in the pure waters of Ounasjoki River

Life is grand for graylings in the pure waters of Ounasjoki River

Located in Finnish Lapland, on the Ounasjoki River, the village of Kaukonen now treats its wastewater with a new WehoPuts 400 treatment plant. As in many rural areas, long distances make village treatment plants a more sensible alternative than transporting wastewater tens of kilometres to the nearest town.
Don’t count on luck to protect you from flooding

Don’t count on luck to protect you from flooding

With a bit of good luck, a property can overcome rains without flooding, but fewer and fewer count on such luck. As its stormwater solution, a waste power plant to be built in southern Finland chose one-hundred-metre long Weholite tanks.
 
Water treatment plant

Water treatment plant

Water company Ylä-Savon Vesi Oy needed a solution to improve the water quality in water supply process. The solution was an aeration tank made of Weholite.

Clean drinking water for 17,000 scouts

Roihu 2016 – the 7th International Finnjamboree organised by Suomen Partiolaiset - Finlands Scouter ry, was held at the Evo campsite in Hämeenlinna on 20–28 July 2016. A camp for 17,100 people was built in a forest area owned by Metsähallitus. Some 3,000 participants arrived from abroad – from about 40 different countries. Uponor delivered 7,600 metres of pipes to the area. The pipes were used to supply clean water and to lead grey water away from the area in a controlled manner.
Weholite limits overflows and pollution in London

Weholite limits overflows and pollution in London

Uponor’s Weholite technology was the key solution in a unique project in London, where the Lee Tunnel and Thames Tideway tunnel have the task of capturing an average of 39 million tonnes of sewage a year from the 35 most polluting combined sewer overflows (CSOs). An upgraded pipeline system was designed to reduce the number of overflows – and their environmental impact – from the sewers and treatment systems serving London. A particular aim is to limit pollution from the sewers and treatment systems connected to the Beckton and Crossness sewage treatment works.
Fighting against an ecological disaster in a world-record time

Fighting against an ecological disaster in a world-record time

Rapid action was critical when a sewage collector broke in Warsaw, Poland, causing a massive waste spill into the Vistula River. Uponor Infra’s crew worked 24 hours a day in order to stop the pollution of the river. A temporary pipeline was produced, delivered and connected in just eight days.

A smart retention system for an anti-flooding solution

A smart retention system for an anti-flooding solution

September 2018 saw the launch of the project for a stormwater drainage system in Rzeszów, almost 26 kilometres long, in the residential District of Budziwój, which partially coincides with the floodplain of the River Wisłok. One of the elements of this system is the retention canal. The project, scheduled for delivery by May 2020, will help to finally solve flooding problems which have been plaguing the residents of this region of Poland.

 

Sewage retention chanel

Sewage retention chanel

The construction of an innovative retention sewage canal in Rzeszów in southern Poland was recently completed using Weholite piping and manholes.
Sewage separation system

Sewage separation system

Construction of storm water collectors in Nowe Polkowice is one of the stages of a big investment concerning the drainage of the district.

Sea outlet of treated wastewater

Sea outlet of treated wastewater

A sea outlet of treated wastewater was initiated in Swarzewo. It is yet another of the many environmentally friendly projects that have recently been carried out in Poland where PE pipes were used.

Strong, Safe and Flexible

Skaraborgsvatten in the south of Sweden has replaced its old intake pipeline made of wood with a new one made of Polyethylene. The new system was not only easy and fast to install - it is also impact resistant and capable of withstanding high levels of mechanial stress.

Safe and Sustainable

Weholite ensures safe and reliable transportation of stormwater and waste water - and safety is of utmost importance because the newly installed pipelines will run through a water protection area.
Focus on sustainability

Focus on sustainability

Uponor Infra secure future sewer transport with Weholite. Uponor´s contribution to this complex and prestigious project is not just about supplying Weholite. It also includes project management and technical support such as design and calculations, customized products and field service with onsite installation - all coherently coordinated by Uponor Infra Project Services.
Weholite installed in Valdemarsvik Sweden

Weholite installed in Valdemarsvik Sweden

In 1960, the Fifalla River, which flows through Valdemarsvik into the Valdemars Bay, was culverted. At the end of the 19th century, Lundbergs Läderfabrik was built over the last part of the river at the outlet, but in 1960 a culvert came into place, up to the factory under Storgatan for which the Swedish Transport Administration is responsible.
 
Uponor Vault cleans the storm water

Uponor Vault cleans the storm water

As an industrial city and a port on an inlet of the Baltic Sea, Norrköping in southeastern Sweden strives to prevent pollutants from ending up in waterways. In an ongoing pilot project, pollutants carried by stormwater run-offs will be captured a massive, tailor-made Uponor Vault, a stormwater treatment chamber to ensure that the stormwater is purified before it reaches the Ljura Stream and finally the sea.
 
ProFuse installed in Borås Stad

ProFuse installed in Borås Stad

When the 250 millimeter pipes ProFuse replaces old 150 millimeter pipes in cast iron on a two-kilometer stretch in Frufällan, society will have a significant increase in capacity for the vital water supply. In addition, the new pipes provide fewer coatings and thus less service needs and better hygiene.
 
Ultra Rib 2 Blue first installation

Ultra Rib 2 Blue first installation

In connection with a project in Sigtuna, the first pipes Ultra Rib 2 Blue are delivered. A new generation of pipes with 70% reduced carbon dioxide emissions. A significant part of the oil for the pipes comes from the waste industry and is vegetable.
 
Sustainable sewer pipeline with Ultra Rib 2 Blue

Sustainable sewer pipeline with Ultra Rib 2 Blue

The Ultra Rib 2 Blue pipes were first launched in Sweden – this year, the pipes have already been installed at several locations. In Finland, a pilot installation was carried out in early autumn in the Jalkaranta district of Lahti, a few kilometres from the city centre.
Unique design ensures controlled stormwater drainage

Unique design ensures controlled stormwater drainage

In Slagelse Municipality, there are requirements for the drainage of rainwater and wastewater to be separated, and therefore it was important that the wastewater solution on the street, Nordre Ringgade, was also updated in accordance with current legislation. The client has received an approved solution where the wastewater from the commercial property in no. 59 has been separated from the rainwater. The rainwater is now diverted directly from the 2,500 m2 car park.
Battery of retention tanks

Battery of retention tanks

In Mielec, modern storm water and snowmelt retention systems have been built, which will solve the problems with periodical flooding of streets and buildings in the city centre.