Precision planning and engineering optimise Holland Hydrogen 1 build.

As Europe’s first large-scale green hydrogen plant, Shell’s Holland Hydrogen 1 is a landmark renewable energy project.

Its electrolyser units, with a total capacity of 200MW, will generate up to 60,000kg of hydrogen per day, drawing power from the Hollandse Kust Noord offshore wind farm.

The facility is unique, and has wider significance in the establishment of viable, sustainable fuel sources for energy-hungry applications, such as construction and road haulage. As such, significant engineering expertise was required to ensure its ambitious blueprint could be built to schedule.

Mammoet was involved from the early stages of the project to consult on its constructability at the FEED phase, and ultimately to plan and manage the road movements and key lifts that would bring the facility to life.

Constructed behind the sand dunes of the Dutch coast, the area surrounding the site was in a state of continual development, making accessibility difficult.

Adding further challenge was the workspace itself – an area of limited space and with different contractors working concurrently.

Mammoet’s early involvement, detailed planning and precision engineering was key to ensuring the biggest building blocks for this groundbreaking project were delivered safely and to schedule.

Constructing the plan

For more than two years, Mammoet assisted Shell with constructability planning for the facility, inputting into the engineering design process. This experience, honed from thousands of complex modular construction projects over decades, helped Shell to establish the optimum modularization strategy.

“We started our involvement supporting with the route survey, as part of wider pre-study activity,” said Paul van der Waal, Tender Specialist at Mammoet. “I was actively involved in the constructability meetings to look at the build from a transport and lift perspective”.

From this study, the team determined the optimum routes and equipment needed to transport the heaviest items - many arriving by sea - to the site. The Euromax Terminal in Rotterdam was selected as the receiving port.

A study on a section of its quayside was conducted, to ensure the ground was strong enough to bear the weight of the heaviest components and ensure this did not become a limiting factor on the size – and therefore cost-efficiency – of modules.

Working inside this section of the quay, the heavy items were unloaded from arriving vessels using a 750t mobile crane and placed onto conventional trailers pulled by prime movers.

Once offloaded, they were moved to a temporary storage area inside the port or transported directly to the site, 15km away.

Safe and efficient lift and transport planning

Following the FEED phase, Mammoet was heavily involved in delivery – by providing the means to unload, transport and ready the components for installation.

Emissions were not permitted during the significant phases of this project taking place indoors. Following its work over recent years to de-carbonize many heavy lifting and transport scopes, Mammoet was prepared for this scenario.

An assortment of zero-emission equipment was used on site – including a heavy duty carrier (HDC hydraulic platform trailer), robot mover and LTC1050-3.1E crane - all powered by electricity.

Mammoet operators performed all lifts for items above one tonne.

Mobile cranes, with capacities ranging between 60 and 750 tonnes, were utilized throughout. Heavy items were installed by being skidded or lifted into position.

Transformers (weighing 90-165t) were installed by skidding and jacking. Ten large air cooler units of 80t each were lifted onto the facility’s roof using a dedicated steel structure.

Mammoet also supported the installation of around 200 items inside the building housing the electrolyser. These comprised ten electrolyser units, each built from approximately 20 parts.

The teams to deliver

With space on the site limited, finding ways to help alleviate this was never far from the minds of the team. This led to a large pipe rack unit being fabricated off site instead of inside the facility.

Mammoet was able to move and install the rack in two sections, providing a modular construction solution that saved time, space and minimized on-site disruption.

Early involvement and effective communication brought huge benefits during the project, with dedicated engineering and operations teams at Mammoet supporting at every stage.

“We had an active on-site team who was fully immersed in the process,” said Marco Barendregt, Project Manager at Mammoet.

“We maintained good communication with Shell, as well as with all the other parties on the mechanical, steel, and construction sides of the build. This ensured the installation schedule went to plan, with every heavy movement integrated smoothly with the next”.

The project demonstrates how long-term experience in modular construction is being used to help construct future sustainable energy alternatives.

Through its successful completion, another step has been taken on the journey towards an emission-free future for heavy industry - supported by emission-free equipment of Mammoet.

For more information, please visit Mammoet's website.

EXPORT | DIVERSIFY | GROW

EXPORT | DIVERSIFY | GROW

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