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Press release from DNV on enhancing class rules

Houston/Oslo: DNV has restructured its offshore classification rules for Mobile Offshore Units in order to improve transparency and enhance safety. “Our aim is to help the rig owner in the building process – to clearly show that the unit is constructed in compliance with reliability and safety standards. At the same time, yards can achieve improved efficiency and have the ability to document the safety level of alternative solutions,” says Erik Henriksen, Director for Mobile Offshore Units at DNV.

International offshore regulations and requirements are constantly adapting to new conditions, technologies and safety issues. Class rules prescribe how the regulations are to be met and help the owner and yard in designing and constructing the newbuild. But achieving an optimal result requires a delicate balance between detailed prescriptive vs. functional and more general requirements. The first ensure predictable and transparent results, while the latter allow the application of alternative solutions.

“DNV is continuously developing its standards and guidelines in order to be in the forefront of technology. As a class society, we aim to provide clear and updated rules to ensure that offshore units are safe, efficient and reliable. This is where we provide added value, since a more reliable unit equals less downtime,” says Henriksen.

“Today, DNV is launching an enhanced and restructured version of our offshore classification rules for Mobile Offshore Units. I’m confident that these will provide stakeholders with a clear description of the technical requirements. As before, the rules are aligned with the IMO MODU Code, International Association of Classification Societies (IACS) Unified Requirements and other relevant international standards and codes. However, in addition, they include a comprehensive description of interpretations. This makes the rules’ requirements easily understandable for application throughout the design, construction and operation of the asset,” he points out.

DNV recognises the competitive advantage of building to a higher standard than required for compliance with regulations. Going beyond these basic requirements will not only result in improved safety, but also increase reliability and hence have a direct positive effect on downtime. For owners looking to achieve this advantage, DNV has added an extra level of system requirements defining the optional Enhanced System class notation.

Specifically, the restructured rules provide advantages to all parts of the value chain:

  • EFFICIENCY – they enable more efficient production that meets internationally accepted standards without being limited to prescriptive solutions
  • RELIABILITY – they provide assurance that the unit meets reliability and safety standards without the burden of unnecessary disputes
  • TRANSPARENCY – they create trust that safety and design principles are implemented by following detailed interpretations.

The enhanced and restructured format is now open for comments during an external six-week consultation period. Subsequently, DNV will update the standards based on the input received, followed by formal publication.

For the full press release, please visit the DNV website.

Associated companies:


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