Transport

DNV GL launches Approval of Manufacturer scheme for maritime 3D printing

International classification society DNV GL,  who recently published its first classification guideline for additive manufacturing in the maritime and oil & gas industries, has released a class approval of manufacturer (AoM) program for 3D printing manufacturers.

Also the first of its kind, the AoM program, in accordance with the DNV GL rule requirements, will validate a manufacturers’ ability to consistently produce materials and products to given specifications.

“Additive manufacturing is a technology that holds a great deal of promise for the maritime industry,” said Knut Ørbeck-Nilssen, CEO of DNV GL – Maritime.

“Our responsibility is to give manufacturers a clear path they can take to offer their innovative products, while ensuring that our customers can have the same confidence in an AM product as they do in any other that has undergone approval by class.”

A 3D-printed aluminium replica of mooring chain testing bed at the DNV GL’s lab in Bergen. Image via DNV GL.
A 3D printed aluminum replica of mooring chain testing bed at the DNV GL’s lab in Bergen. Image via DNV GL.

Enabling 3D printing in the maritime sector

As a global quality assurance and risk management authority DNV GL is heavily invested in the development of standards for additive manufacturing. Its 48-page guideline for 3D printing in the maritime and oil & gas industries was published to assess all aspects of the process, i.e., materials manufacturing procedure qualification, data transfer, 3D printing, and post-processing. In addition, the company recently established the Global Additive Manufacturing Centre of Excellence in Singapore which is designed to develop qualification, certification, and training for 3D printing.

With the new AoM program DNV GL expands on the standards set by the industry, and is requesting that manufacturers wishing to supply products to advanced sectors must undertake a proof of concept before applying the technology to an order.

“The release of the AoM programme opens up new opportunities for both producers and users of these products, creating potential efficiencies in logistics and supplies chains, as well as in on-board maintenance and repair,” explained Ørbeck-Nilssen.

“Above all, however, we must ensure that safety and quality standards are upheld, and this new programme allows producers to demonstrate their fitness to the shipping industry.”

DNV GL's certification cycle. Image via DNV GL class guideline DNVGL-CG-0197
DNV GL’s certification cycle. Image via DNV GL class guideline DNVGL-CG-0197

3D printing propels maritime transportation

Additive manufacturing is proving to be a promising method in the maritime sector to efficiently produce industrial replacement components. Last month, large-scale metal 3D printing bureau AML Technologiesfacility specializing in wire-arc additive manufacturing (WAAM) received accreditation additive manufacturing facility qualification from Lloyd’s Register (LR). WAAM has produced a 3D printed ship propeller for RAMLAB as well as a 3D printed tugboat propeller for the Damen Shipyards Group.

Additionally, Ivaldi Group, a contributor to DNV GL’s martime guideline, recently exited stealth mode in an on-demand 3D printing agreement with Wilhelmsen, the largest maritime network in the world.

Damen Shipyard's 3D printed, machined and polished WAAMpeller. Photo via Mer et Maritime
Damen Shipyard’s 3D printed, machined and polished WAAMpeller. Photo via Mer et Maritime

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Featured image shows a 3D printed aluminum replica of mooring chain testing bed at the DNV GL’s lab in Bergen. Image via DNV GL.