A BRUGG GROUP COMPANY
Project
In the French twin municipality of Veigy-Foncenex, a reliable pipe system was to be laid for a biogas plant near Lake Geneva. The biogas site was founded five years ago, and a new building was added in 2023. A local heating pipeline with our FLEXSTAR UNO pipes was installed to ensure a flawless energy supply for the new part of the building.
Execution
Two rings of FLEXSTAR UNO, each 200 metres long, were supplied and laid for this construction project. The aim was to connect the pre-pit of the biogas plant with the boiler room. The construction work took a total of two months, whereby the actual laying of the pipes was completed within two days.
The most important construction stages were the construction of a new building and the laying of the pipes under the floor slab. In the first stage, the pipes were laid in the new building before the concrete slab was poured. The next stage involved laying the trench to the boiler room. Thanks to the good weather and the easy handling of the FLEXSTAR pipes, the installation was simple and uncomplicated. Now the biogas plant can supply the region even better with renewable energy in the future.
Project
In the canton of Basel-Stadt, an efficient pipe was laid in the village of Riehen for the Fondation Beyeler, the internationally renowned museum of modern and contemporary art. Our best-insulated CALPEX pipe was used to supply the new museum building with district heating and cooling in the future.
Execution
Construction work began in November 2023 and extended over three stages. A total CALPEX pipe length of approx. 800 metres was installed in the project. The aim of the work was to connect the new museum building with the pavilion and connect it to an existing district heating network. A special feature of the project was the production of a special part. This was a ventilation system, which was agreed with the customer before construction work began and installed accordingly. During the construction work, the customised part had to be slightly adjusted on site by the regional welder.
One of the biggest challenges in the CALPEX project, in addition to the complex construction of the customised product, was the terrain next to the new museum building. In order to protect the large old trees, the pipes had to be laid carefully in the trench - which our fitters mastered in exemplary fashion.
Proyecto
En la comuna suiza de Attiswil, perteneciente al cantón de Berna, se interconectó en red el sistema de calefacción de 3 edificios de viviendas. El combustible para la instalación de calefacción central lo aportan los propios miembros de la comuna, con madera del bosque de las proximidades.
Reto
Debido a la inminente construcción del edificio, la tubería CALPEX debía colocarse a temperaturas que rondaban el punto de congelación. Las medidas adicionales que se tomaron, como el precalentamiento de la tubería CALPEX, ayudaron a que el montaje se pudiera realizar sin problemas. Rolf Steffen, jefe de equipo de Alpiq AG, quedó satisfecho tras la exitosa finalización del tendido de la tubería CALPEX. «El proyecto demostró lo bien que funcionó la colaboración entre el instalador, Meier Tobler, y Brugg Rohrsystem AG, desde la fase de planificación hasta la de ejecución. Eso es lo que entiendo yo por trabajo en equipo».
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Project
For the world-famous Swiss municipality of St. Moritz, we installed a connecting line in a quick night operation. Our flexible and cost-effective CASAFLEX pipe was successfully installed between the Scala cinema and the Kulm Hotel, which has a heat generator.
Execution
Since the road could not be closed during the day, the installation had to be moved to the night. From 8:00 PM to 2:00 AM, our installers were actively working in the trench and laid the CASAFLEX pipe in record time.
After installation, the trench was immediately closed so that the road could be reopened to traffic the next day.
Project
For the client Hans Brun AG, our installers implemented an efficient district heating pipeline in the Swiss municipality of Bassersdorf in September 2023.
In seven construction phases, our flexible CASAFLEX and rigid PREMANT pipe systems were used to connect a residential area with several highrise buildings to an existing heating.
Execution
Within six weeks, we installed a district heating pipeline for 14 highrise buildings for the client. Given the limited time available for this project, we are particularly proud that our installers were able to complete all pipe installations within the allotted timeframe successfully.
Our PREMANT pipes were used for long, straight sections, while our CASAFLEX pipes were used for house connections. The tight space constraints onsite did not pose an obstacle. With skill and experience, our team overcame these challenges, allowing the pipes to be easily uncoiled from the drum and aligned in the trench.
Project
In Carona, a small village in the popular Swiss canton of Ticino, an extensive district heating pipeline was laid from the heating plant to the centre of the village. Our reliable PREMANT UNO and CASAFLEX DUO pipes were used to optimise the supply of heat energy to the residents.
Execution
The main heating network for Carona was built twelve years ago. Over the years, it has been repeatedly extended and expanded. In the course of these expansions, the largest construction phase was completed in 2019. We laid an extensive district heating pipeline from the heating centre to the village centre. Our rigid PREMANT UNO pipe was used for the straight pipeline. The flexible and bendable CASAFLEX DUO pipe, on the other hand, was mainly used in the centre of the village.
The biggest challenge on site was the limited space in the old town centre. As the streets were not passable by lorry, our fitters parked the lorry outside the village centre and then pulled the CASAFLEX pipe over the winding streets to the trench. The laying of the pipes themselves has been a complete success so far.
Project
In the diverse Swiss municipality of Sachseln, a district heating pipeline was laid near Lake Sarnersee for the local heating network. Our efficient CASAFLEX and PREMANT DUO pipes were used for the Flüelistrasse to ensure that the residents are supplied with sustainable energy in the future.
Execution
Construction work began in March 2023 and is still ongoing, as the construction project is part of a larger heating network. As a pipe constructor, we have already realised several projects for the customer together with the engineering office. The aim of this project was to connect Flüelistrasse to an existing district heating network. The energy released for the district heating pipeline is obtained from the combustion of wood chips.
As the Flüelistrasse connects the village of Sachseln with Flüeli-Ranft and the pilgrimage site there, it was important to minimise damage to the road. Our CASAFLEX and PREMANT DUO pipes have two inner pipes of the same size for the flow and return of thermal energy. As only one pipe was required per line instead of two, our fitters were efficient when laying the pipes. The biggest challenge in the construction project was installing the pipe at the Salzbrunnen bridge. Because the pipeline could not be installed above or below the bridge, it was necessary to attach it to the side of the Salzbrunnen bridge with special fastenings.
Project
In the popular sports and recreation centre in Bürglen, a reliable and robust local heating pipeline from BRUGG Pipes was laid for Klausenstrasse for the local community. Our perfectly matched CASAFLEX and PREMANT pipes were used in this project to provide residents with a reliable supply of sustainable energy in the future.
Realisation
Construction work began in March 2023 and lasted until July 2023. The aim was to lay a local heating pipeline for the school building and the surrounding residential buildings. The flexible CASAFLEX and the rigid PREMANT pipe system were used in several construction stages. In total, the fitters installed a route length of 400 metres during this construction phase. Approx. 1,700 metres are planned for the final expansion.
Important steps in this project included parking the lorry with the material, pulling and aligning the pipe in the trench and fitting the couplings. Our resistant PREMANT pipes were used for the transport line and the flexible CASAFLEX pipes were used for the house connections. A considerable challenge in the project was laying the pipeline from the power station up the steep mountainside to the main road. Despite the demanding gradient on site, our fitters mastered the individual construction stages with aplomb.
Project
In the foothills of the Swiss Alps, the municipality of Rothenthurm has decided to install a district heating pipeline. Many public and private buildings in the town are to be heated sustainably with a central heat source. Our compatible CASAFLEX and PREMANT pipes were used to provide the residents with an optimum energy supply in the future.
Realisation
The construction project started in summer 2019 and involved laying a total length of up to six kilometres. Not only existing buildings, but also new flats will be connected to the heating network. Our rigid PREMANT pipes were used for long and straight sections. Flexible CASAFLEX pipes were used for the house connections.
In the first construction phase, the district heating pipeline was built from the new heating centre to the primary school building. The energy for the heating centre is supplied by an enormous wood boiler, in which heat is generated by burning wood chips and transported to the buildings through our pipes.
When carrying out the project, the trench along the roads had to be cleared in such a way that it caused as little disruption to road traffic as possible. Another challenge for the workers on the project was the electrical and water pipes already laid in the ground. The altitude of the construction site posed an additional challenge in winter, as the construction pits had to be kept clear of snow.
Project
We have successfully completed the expansion of the district heating network for our customer EBL (Genossenschaft Elektra Baselland) in the Swiss capital of Bern. With our extremely heavy-duty FLEXWELL DHC district heating pipeline, we have completed a crucial construction phase. Namely the connection between the municipality of Ittigen and the city of Bern. Our pipes were laid under the River Aare to supply the Worblental heating network with sustainable heat in the future.
Execution
The project began immediately after Easter with the delivery of two of our FLEXWELL DHC pipes in the largest available dimension DN 150, which weighed an impressive 7.5 tons per pipe. With a casing diameter of 310 millimetres, a pipe length of 226 meters each was transported to Bern on two drums. Thanks to the use of a special transport with extra width, the pipes were also transported over narrow stretches of land.
The construction site was managed thanks to the use of heavy machinery and six experienced fitters. A special mobile crane with a lifting capacity of 130 tons was used to unload the pipes. Another 60-tonne pneumatic crane lifted the drums into the pipe-laying trolley. Two of the FLEXWELL DHC district heating pipes were pulled from the starting trench on Arastrasse in Ittigen into the empty pipes and laid from there under the river up to Tiefenaustrasse in Bern using cable winches.
Project
The Burgergemeinde and the municipality of Lengnau in the Swiss canton of Bern are focussing on ecological and economical heating with their joint heating network called WärmeLengnau - with the aim of producing heat sustainably. Our durable FLEXWELL DHC steel casing pipe system was used in Moosstrasse to ensure that the town is optimally supplied with heat energy.
Execution
Since 2020, many new district heating pipes from BRUGG Pipes have already been reliably laid for the construction projects of the heating network in Lengnau. In September 2023, a district heating pipe was installed in Moosstrasse as part of these construction projects. The aim was to connect the flexible steel casing pipe to an existing heating centre in the shortest possible time so that public traffic was affected as little as possible.
The short time frame was a considerable challenge for our fitters on site, especially as a total of two FLEXWELL DHC pipes, each 134 metres long, were to be laid. Due to the time constraints, our workers had to unwind the pipes from the reel, straighten them, pull them into the trench and align them particularly quickly and efficiently. As the trench was very close to the road, it was also important to work extremely carefully within the cordoned-off areas when laying the pipes. Another challenge was finding the space for the bogie and ensuring access for the lorry with the drum. Despite the challenges, the installation went smoothly thanks to the hard work of our fitters.
Project
In Zurich, the city with the highest population in Switzerland, a flexible and resistant district heating pipe from BRUGG Pipes was laid for Nürenbergstrasse under narrow conditions. Our FLEXWELL DHC steel casing pipe system was used to provide the residents of the building block with an optimum and sustainable supply of heat.
Execution
The construction project began in September 2023. The aim was to connect the flexible steel casing pipe to an existing pipeline and connect it to the building. The construction work took just three days, with the most important steps being the challenging pulling of the pipe into the trench and the pipe laying itself. Two FLEXWELL DHC pipes were used for this project. As the trench was close to a garden plot, it was important to lay the pipe extremely carefully.
At the construction site, there was hardly any parking space on Nürenbergstrasse for the lorry carrying the material, which is why the workers parked the lorry on the other road and then pulled the pipe across a green area to the trench. Another challenge was that no tractor unit could be used for digging. The fitters on site therefore worked increasingly with deflection pulleys to align the pipes underground and master the narrow bends - which they did perfectly.
Project
Insulated pipe systems at the Swiss Museum of Transport
At Switzerland’s largest and most famous museum – the Swiss Museum of Transport located directly on Lake Lucerne – BRUGG Pipes collaborated on an amazing project together with Energie Wasser Luzern (ewl) in March 2022. The district heating and cooling lines connect the new energy centre of the new “House of Energy” multi-purpose building to the existing exhibition buildings through the outdoor area.
Execution
Use of lake water as a modern and ecological source of heating and cooling in Lucerne.
The system is located in the outdoor area of the museum, which is also open to visitors, so fast and efficient execution of the project was of utmost importance and central for all involved parties. Thanks to detailed project planning and coordination, the project went smoothly and was completed on schedule. Installation was carried out by our own installation team to the complete satisfaction of the customer.
A special feature of this project was that the lake water in the immediate vicinity was used as an energy source and distributed with a heat pump. The lake has large heat and cold reserves that can be used ecologically. This is an inexpensive and renewable source of energy with low investment costs and low maintenance. Thanks to the energy from the lake, the use of fossil fuels can be greatly reduced, thereby minimising CO2 emissions. Since the energy is produced locally, long transport routes are not necessary and the added value stays in the region
Calefacción urbana en la playa del Báltico
Heiligendamm es conocida con el sobrenombre de la "ciudad blanca junto al mar" debido a los característicos edificios blancos a lo largo de la playa del mar Báltico. El "collar de perlas" formado por los blancos edificios cuenta desde 2017 con una nueva línea de calefacción urbana para su abastecimiento. Aquí transcurren tuberías de alimentación nuevas y antiguas de calefacción urbana para las que se hizo una inversión de 1,1 millones de euros. Cerca de las vías del ferrocarril Bäderbahn Molli, se realizó la conexión de la línea KMR DN 200 a la tubería de revestimiento de plástico DN 250 existente. German Pipe suministró y tendió tuberías PREMANT y piezas moldeadas con una longitud de aproximadamente 250 m.
Como es habitual, tuvieron que cruzarse otras líneas de alimentación. El cálculo estático para la tubería se estableció en 16 bar. A lo largo de la calle Kühlungsborner pudieron, colocarse de forma igualmente cómoda los dilatadores en U y Z estimados. Formados de codos de 1 x 2 m, no se necesitaron manguitos de montaje. PREMANT y FLEXWELL Entre el balneario y el Grand Hotel, la situación modificó. Las superficies entre los edificios adyacentes y los caminos se estrechaban y había que elegir otro método. El agua caliente, que alcanza temperaturas de hasta 110 °C, circula aquí a una profundidad de hasta 4 m. Con la tubería de calefacción urbana FHK de BRUGG, fue posible ejecutar este tramo sin tener que practicar zanjas en caminos, aparcamientos ni zonas de prado. Para ello, era importante la transición de PREMANT a FLEXWELL. Los 16 bar del tubo interior provocan una fuerza de dilatación de unos 45 kN en los extremos. Para soportar esta carga, se realizó el cálculo estático de las piezas moldeadas y tuberías PREMANT que iban a conectarse.
La fricción del revestimiento absorbía una parte de la fuerza, que era aproximadamente 4 kN/m. Pero, gran parte de la fuerza antagónica se dirigía contra el suelo por la presión lateral del codo KMR. Para eso, también resultó útil el recubrimiento de acero de la tubería de calefacción urbana FLEXWELL, que aplica o transmite parte de la fuerza antagónica. Entre la Villa Perle, totalmente reconstruida en 2013, hasta el hotel residencial transcurrían la 3.ª y la 4.ª sección de la obra. Con la única interrupción de puntos de conexión y cruces corredizos, se soterraron otros 600 m de FLEXWELL 200/310. La conexión a la línea KMR existente se realizó con dispositivos de cierre. Para permitir una reconexión posterior, hay 6 llaves esféricas en una superficie de solo 20 m². El "FWN-Aufrüstung Heiligendamm - 1. bis 4. BA" (nombre oficial del proyecto) demuestra que es posible hacer el trazado perfecto con la combinación acertada y bien planificada de sistemas flexibles y rígidos. Los cálculos estáticos los realizó German Pipe. Temperatura de alimentación: 110 °C. Presión nominal: PN 16
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Tarea:
Se construyó una línea de vapor entre la incineradora de basuras y la fábrica de papel. Por motivos estéticos, la pieza intermedia de 836 m no podía tenderse en superficie. La tubería superficial empleada no podía utilizarse para el tendido subterráneo. Se buscó una solución. Requisito: Temperatura de servicio de 220 °C, DN 500, caudal de 45 toneladas/hora
Solución:
Se tendió una tubería SMR (tubo de revestimiento de acero). De la recirculación del condensado se encarga un Flexwell DN 100. Acero 1.4404 Para los 836 m se emplearon en su mayoría piezas de 12 m. Fueron necesarias piezas especiales en los cambios de dirección. La tubería de condensado flexible DN 100 pudo tenderse de una pieza entre los pozos.
