ONE WAVE ENERGY PROJECT

Works on Sea Wall Nears Completion for the Landmark EWP-EDF One Wave Energy project

Eco Wave Power (EWPG Holding AB, Stock Symbol: ECOWVE) is pleased to announce that it nears completion of  the wall reinforcement works, meant to enable the installation of floaters on the sea wall of the Port of Jaffa, Israel.

The works so far have included clearing the top cement layer of the relevant sections of the sea wall, followed by adding two layers of steel rebars for reinforcement and finally, in several days (in accordance with weather conditions), the final step will be completed, which is the creation of a new cement layer, which shall provide the necessary support for the installation of the floaters. In parallel, the company is in an advanced production process of the first set of floaters. Upon production completion, the company will gradually commence installation of floaters, supporting structures and hydraulic pipes onto the new cement layers.

All works are performed by a local subcontractor, during days of calm sea, to enable safe work on the sea wall. The reinforcement works have been planned and are being supervised by Alex Gleizer, a civil engineer (license number 101162) with 25 years of experience executing projects for the Israeli Railway Company, the Israeli Air Force, and the Israeli Electric Company, and with presence from a dedicated safety engineer.

“We had some execution delays due to unfavorable weather conditions, as well as external renovation works that have been performed in the Port of Jaffa. However, now I am glad to announce that we are back on track and are looking forward to finalizing the floaters production and installation of the whole array, which will enable us to send clean electricity from sea waves to the Israeli national electrical grid for the very first time” said Inna Braverman, Founder and CEO of Eco Wave Power.

The EWP-EDF One wave energy project will include 10 floaters, connected to one conversion unit.  Due to the onshore nature of the Eco Wave Power technology, the works on the sea wall and floaters installation will be straightforward and will not involve any works performed from the seaside. The EWP-EDF One conversion unit will be located on land, just like a regular power station, enabling an easy access for operation and maintenance.  This highlights the significant advantages of the EWP onshore technology, in comparison with offshore solutions.

The EWP-EDF one project is executed in collaboration with EDF Renewables IL and co-funding from the Israeli Energy Ministry.

 

Read more about Eco Wave Power at: www.ecowavepower.com

 

 

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Heavy Bridge Construction

Mammoet supports the new construction of one of the heaviest bridges in Linz, Precision engineering safeguards the project’s tight schedule
As the over 100-year-old railway bridge crossing the Danube in Linz, Austria could not be reconstructed, it was decided that a new combined road and railway bridge would be built. Weighing 8,400t (pure steel weight of the supporting structure), this would be one of the heaviest bridges installed in Austria in recent years.

Mammoet was trusted with the project by MCE GmbH, a company of the HABAU GROUP, because it had already successfully executed numerous similar waterborne bridge installation and could assure the use of its own equipment to avoid interfaces that could have delayed the project. The task for Mammoet was to move the two main supporting structures of the new bridge – each weighing around 2,800t, 100m long and 32m wide – from the pre-assembly area on the side of the Danube to the piers in the middle of the river.

 

 

Early in the planning phase, a tight schedule was drawn up in cooperation with the customer to minimize disruptions and interruptions to shipping traffic on the highly-frequented waterway. The engineering concept was to use Mammoet’s Mega Jack 800 for the jacking of the two bridge segments. This system was capable of raising the 2,800t bridge segments from their pre-assembly height to the float-in height quickly and safely.

During the preparatory engineering phase, Mammoet’s team received the information that the two steel structures would be heavier than first planned, due to necessary additional strengthening measures. Thus, the original engineering concept had to be adapted as quickly as possible without jeopardizing the project’s tight schedule.

Mammoet’s engineers planned to move the bridge sections from their point of assembly via SPMTs, driving them onto barges, which would then be accurately positioned above the bridge foundations for installation to take place. The water level always had to be monitored, as high or low water would have meant delays in the schedule.

Other challenges were provided by the very confined pre-assembly area at the side of the Danube, and by the difference in center of gravity between the two bridge structures, which naturally needed to be accounted for in the engineering plan.

After the completion of the intensive planning phase, the execution took place under the interested gaze of the public via live streaming. Four barges were coupled together forming a single vessel and 120 axle lines of SPMT including supports were installed and moved onto the barges.

The first bridge section was jacked up with four Mega Jack 800 towers. The SPMTs were driven from the barge back onto land and took over the weight of the first bridge section.

The bridge segment could now be driven onto the barges with the SPMTs and precisely rotated into its final position with winches, floated in and then lowered onto the bridge piers for installation.

In another multi-day operation, the second bridge section followed accordingly: jacking up, driving onto the barges, rotating, floating in and installing. Due to the heavier weight of the second bridge section and its off-center center of gravity, the engineering concept was adapted so that the second bridge segment could be jacked up by six Mega Jack 800 towers instead of only four.

These operations took eleven days in total. On the day of rotation of the first bridge segment unforeseen morning fog caused a time delay. Mammoet was able to make up some of the lost hours and the closure of the Danube could be lifted after a short delay.

Due to precise planning and excellent cooperation, both bridge segments were safely floated in and installed, and the Danube could be re-opened ahead of schedule several times. The bridge is expected to be completed in October 2021 and, as a key project, will greatly relieve urban traffic in Linz in the future.

 www.mammoet.com

 

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