“De Nieuwe Warmteweg” is the name of a heating pipe that will connect the port of Rotterdam, where heat is available, to the city, where there is a need for heat. 2 x 26 km (supply and return) of pipeline line with a diameter ranging from DN300 to DN500 is laid in 2012-2013. Currently they are working on some surface buildings.
“De Nieuwe Warmteweg” is a safe and efficient heating network with a capacity of 50,000 homes using residual heat. Due to “De Nieuwe Warmteweg” the unnecessary waste of residual heat is prevented. The environmental advantage is that in the city less heat needs to be generated from natural gas or coal, for example. This saves annually 70 to 80 kt CO2 emissions. With this process, “Warmtebedrijf Rotterdam” also makes a significant contribution to the objectives of the Rotterdam Climate Initiative, which wants to see a 50% reduction in regional CO2 emissions by 2025 compared to 1990.
Visser & Smit Hanab is the main contractor for this impressive project. We spoke to Sander Dortland: " Visser & Smit Hanab is responsible for the design, the implementation, the commissioning and the maintenance for 15 years. As a Mechanical Engineer, my responsibilities include the specification of the valves, pumps and other components."
Visser & Smit Hanab is proud of the long-term partnership with its clients - something it has in common with Econosto. Senior Sales Adviser Emiel van Bugnum: "For this project, we are supplying more than 400 valves (butterfly valves, ball valves, globe valves and safety valves) from DN15 through DN500. For the large butterfly valves, the customer initially chose a "triple eccentric" metal sealing model.
Following an analysis of the operating conditions, we proposed the application of high performance double eccentric RPTFE valves. This model is especially suited for the application and leads to a considerable saving.
"During the project, as always, there were fluctuations in the number of valves, the dimensions and the tag numbers. We addressed this in good cooperation with the customer. Everything went quickly, thanks to the direct lines of communication."
In consultation with Visser & Smit Hanab, all components were given tag numbers according to the system documentation. Because there was not much storage space at the three construction sites, the valves were delivered on demand. These flexible logistics constituted an important element of the project.
Sander: "We chose Econosto because of its low price in combination with good quality, the fact that they have a site nearby and their flexibility in the just-in-time deliveries. They also provide documentation packages for every type of valve, including drawings, and the material and testing certificates.
Econosto also supplies 13 filters. Chris Hendriks, Product Group & Engineering Manager: "These filters, with a diameter of up to DN400 and a pressure rating of PN40, have been especially designed for this project and produced under our PED certification. Lloyds is responsible for the monitoring and the Design Appraisal Document. The filters are mounted in a floating position, so that they can move if the pipe expands or shrinks. When starting commissioning, there are coarse filter baskets in the pipes that are replaced by finer ones after rinsing.
Sander concludes: "We are very pleased with the flexibility of Econosto and the fact that they respond quickly when anything is wrong."