Mammoet sought lighting for the PTC-210-DS, at the time one of the largest cranes in the world. The crane was used for a large-scale project: replacing the cranes on the heavy-lift vessels Wind Osprey and Wind Orca for offshore wind projects.
With good work lighting, Mammoet could continue working into the evening. JEL provided the complete lighting design and collaborated with the client on the installation.
The mounting height was extreme: the highest fixture hangs at 160 meters. At that height, replacement after installation is practically impossible, so the lighting had to be resistant to all conditions.
The lighting design was complex. The lighting was not allowed to blind passing traffic, traffic from the nearby tunnel, or the operators around the crane. At the same time, the light had to be uniform and concentrated over the entire working height, not fixed on one point. Furthermore, only five mounting positions were available.
The question started with good work lighting so that Mammoet could continue working into the evening on replacing the cranes on the heavy-lift vessels. Wind Osprey and Wind Orca.
It quickly became apparent that the real challenge was the high-level lighting design: maintenance-free, uniform across the full working height, and without glare to the busy surroundings.
Contact our engineering team to discuss crane lighting, high-level lighting design, or a complete lighting scope.
Lighting for the world's largest ring crane (heavy lifting)
Schiedam, Netherlands
Mammoet
Mounting height up to 160 m, near shipping lane, highway, and tunnel; offshore wind vessel project
An lighting question to work through developed into a complete high-altitude lighting design.
Lighting design and engineering, installation planned together with the client, material delivery.
5× Orca AC 800 W (111,000 lumens) with special projection optics
200 lux average over the working height, uniformity 0.65 to 0.75 (norm: 0.40).
EN 12464-2, NSVV guideline for light pollution and NEN 1010 (electrical installation).
JEL designed the lighting concept based on the actual situation at the crane: an assembly height of up to 160 meters, only five available positions, and strict requirements for glare affecting the shipping route, highway, and operators.
By first determining the environment and the lighting design and only then selecting the luminaire and optics, five Orca luminaires provide more than 200 lux across the entire working height, as tested in accordance with EN 12464-2 and the NSVV light pollution guideline.
JEL delivered the complete lighting design and fixtures for the Mammoet PTC-210-DS and conceived the installation together with the customer.
JEL did not design the lighting on one plane but vertically across multiple working heights, so that the entire hoisting height of the crane is evenly illuminated.
The luminous intensity towards the nearby shipping lane, highway, and tunnel is limited to a maximum of 5,000 candela, with no upward light, so as not to blind passing traffic and operators.
The fixtures are mounted at a height of up to 160 meters. Since maintenance at that height is not realistic, the installation was carefully planned and executed together with Mammoet.
The design has been calculated at multiple working heights and achieves an average of 200 lux with a uniformity of up to 0.75, well above the standard requirement of 0.40.
There were only five mounting positions available. Using special project-specific optics, those five Orca fixtures still provide more than 200 lux at the workstation.
JEL coordinated lighting design, fixture selection, and installation with Mammoet, ensuring the lighting met the stringent requirements of the heavy-lifting project.
The installation achieves an average of 200 lux in the work area, measured vertically at various heights, with a uniformity between 0.65 and 0.75. This is well above the standard requirement of 0.40; by calculating at multiple working heights, JEL even exceeded the standard.
Towards the nearby shipping lane and highway, the luminous intensity (except directly in front of the crane, which is unavoidable) was limited to 5,000 candela, with no light directed upwards.
The work was carried out with five Orca LED Floodlights in the AC 800 W version, each good for 111,000 lumens. Special optics used for this project made it possible to achieve over 200 lux on the workspace with just five fixtures.
Since maintenance at a height of 160 meters is not realistic, the robustness and reliability of the Orca were decisive factors in the selection.
At that height, maintenance after installation is practically impossible, so the fixtures must be able to withstand all conditions. We selected five Orca luminaires (AC 800 W, 111,000 lumens) with special optics to ensure that the lighting will continue to perform maintenance-free for many years.
The lighting design limits the luminous intensity towards the nearby shipping route and highway to a maximum of 5,000 candela and prevents upward light. This keeps the work area well-lit without disturbing the surroundings.
There were only five mounting positions available on the crane. Due to a focused optics and a well-thought-out design, those five fixtures nevertheless deliver more than 200 lux over the entire working height.
Instead of calculating on a single plane, we vertically calculated the lighting design at multiple working heights. The result is a uniformity of 0.65 to 0.75, well above the standard requirement of 0.40.
The Mammoet PTC-210-DS, one of the largest cranes in the world at the time, was used to replace the cranes on the heavy-lift vessels Wind Osprey and Wind Orca for offshore wind projects.
Are you working on a lighting project for a crane, a lifting or heavy-duty application, or another large industrial site? JEL supports the entire process: from lighting design and optics selection to fixtures, installation, and project coordination.
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