8 hours Ago By itaizul0011
Hamburg’s hydrogen industry network integrates existing natural gas pipeline for long-distance pipeline connection Less construction costs, savings of around 18 million euros, and fewer traffic restrictions – these are the advantages that Hamburg Energy Networks is now leveraging for the connection line of the Hamburg Hydrogen Industry Network (HH-WIN) to the European hydrogen pipeline system in southern Hamburg. After extensive technical investigations, the company acquired the former high-pressure connecting pipeline of a HEW gas-fired power plant that existed until 2004. The purchase price is significantly lower than the investment costs for the hydrogen pipeline originally planned between Hausbruch and the Lower Saxony municipality of Rosengarten.
, Senator for the Environment, Climate, Energy and Agriculture: “With savings of €18 million and a reduction in construction work, Hamburg’s energy networks are demonstrating responsible action in the interests of the city and its citizens. I welcome the acquisition and repurposing of this existing gas pipeline, as it is a win-win for everyone involved and takes the HH-WIN hydrogen project and thus the energy transition in our city a significant step forward.” The federal government and the Free and Hanseatic City of Hamburg will contribute 70 percent of the funding granted for HH-WIN under the “Important Projects of Common European Interest” (IPCEI) program, and the Free and Hanseatic City of Hamburg will contribute 30 percent.
The federal government and the Hanseatic City can therefore benefit from reduced overall costs if the project does not reach its budget by the time of completion. Hamburg’s energy networks will now be spared approximately seven kilometers of pipeline construction, which would otherwise have required crossing a forest in the Harburg Hills, among other places. Only short connecting sections to the hydrogen pipeline network in Lower Saxony and from Stader Straße into the HH-WIN network area now need to be added so that the existing steel pipeline can be converted into a hydrogen pipeline connection.
Traffic-sensitive construction sites eliminated. Originally planned, pipeline construction work along Cuxhavener Straße, Ehestorfer Weg, and Appelbütteler Straße, among other places, can now be eliminated. The repurposing of the existing pipeline will also ease the traffic situation in southwest Harburg.
Only connections on Am Radeland Street and a few kilometers along agricultural land in the south now need to be constructed to establish the hydrogen pipeline connection. Technical Director of Hamburger Energienetze, says: “The steel of the existing pipeline is fully suitable for hydrogen, so we can use the pipeline to connect HH-WIN to the long-distance transmission network with minimal repair effort. This reduces investment costs and eliminates the need for construction work in traffic-sensitive locations and in the forests of the Harburg Hills.
” Corrosion protection measures, among others, contributed to the excellent technical condition of the high-pressure gas pipeline: While the pipeline was out of service, these included a nitrogen filling and cathodic pipe protection. This involves applying a small electrical voltage to the metal surface, creating a negative potential, thus preventing chemical reactions between the steel and moisture and air. The detailed analysis of the pigging results was completed in February in collaboration with an engineering firm.
In the coming months, technicians from Hamburg Energy Networks will conduct further detailed inspections of the high-pressure pipeline at specific locations to prepare it for its later integration into the HH-WIN network. The use of the existing line will not affect the planned commissioning date of 2027 for the first 40 kilometers of HH-WIN. All other planned sections will continue to be built, as recently announced by Hamburg Energy Networks.
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