Floating Offshore Wind Turbines: DNV KEMA Set Standards

SeaDiscovery.com
Tuesday, June 25, 2013
Johan Sandberg: Photo credit DNV KEMA

As demand for wind energy increases, offshore deployments are continuing to move into deeper waters.

DNV KEMA has released its new standard for floating offshore wind turbine structures that will help ensure safety and reliability in floating wind turbines, and give the nascent floating-turbine sector the confidence to continue its development to commercial maturity.

“A prerequisite for the industry to continue to grow and develop effectively is development of design standards…they are essential to ensure a consistent and appropriate level of safety in design, construction and operation of floating wind turbines. This will increase confidence in the technology and hopefully make more projects bankable.” – Johan Sandberg, head of renewable energy at DNV KEMA, Norway and project sponsor.

In response to the fast-expanding offshore wind market, DNV KEMA, the energy arm of DNV, has developed a new standard that will help accelerate the development of a new generation of floating offshore wind turbines by establishing design requirements for the floating structure and related systems. According to Johan Sandberg, head of renewable energy at DNV KEMA, Norway and project sponsor, the standard covers a broad range of issues, including safety philosophy and design principles; site conditions, loads and response; materials and corrosion protection; structural design; design of anchor foundations; floating stability; station keeping; control and mechanical systems; transport and installation; in-service inspection and cable design.

“As demand for wind energy increases, we predict offshore deployments will continue to move into deeper waters and, consequently, there’s a need to establish design standards that will help ensure safety, reliability, and confidence in future wind turbines,” he says. “To that end, the new standard, developed as a Joint Industry Project (JIP) with 10 participating companies, aims to spur progress in floating offshore wind through a framework for best practices and technical requirements, plus producing guidance for design, construction and in-service inspection.”

Sandberg notes that many densely populated coastal areas around the world are not suitable for traditional bottom-fixed offshore wind turbines. In other areas, the shallow water coast is already developed or challenging seabed conditions makes bottom-fixed offshore wind unsuitable. Also, local communities have been known to oppose projects due to negative visual impacts.

“Recent successful deployments of full-scale prototype configurations have demonstrated that floating wind turbines can be a viable alternative and the market is taking notice. Several companies and research institutes worldwide are already engaged in developing research programs, pilot projects and even planning for commercial development of floating wind farms,” he says.

For various reasons, countries like Japan and the U.S. have also made offshore wind energy one focus of their energy policy. According to Sandberg a tricky point in the development of offshore wind around the coastal belts of these countries, like the majority of coastal belts around the world, is that water depths can range from dozens to hundreds of metres. This situation demands new technology so in both Japan and the U.S., ideas are turning to floating structures for wind turbines.

“It is now time to take the next step: standardization. A new standard can increase the confidence in the industry and hopefully attract new investors to this new renewable energy technology,” says Sandberg. “The decades of expertise that DNV has amassed in the standardization of maritime offshore oil & gas, and onshore and offshore wind is invaluable for the development of standards for floating offshore wind structures.”

The new standard for floating wind structures, devised under DNV KEMA’s leadership through project manager Anne Lene Hopstad and technical specialist Knut Ronold supplements the developed DNV Guideline for Offshore Floating Wind Turbine Structures, and the existing standard DNV-OS-J101 Design of Offshore Wind Turbine Structures.

The 10 participants in the JIP study are Statoil, Nippon Steel & Sumitomo Metal Corporation, Sasebo Heavy Industries, STX Offshore & Shipbuilding, Navantia, Gamesa, Iberdrola, Alstom Wind, Glosten Associates and Principle Power.



 

Maritime Today


The Maritime Industry's original and most viewed E-News Service

Maritime Reporter June 2016 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Technology

Denmark Adopts Digital Ship Certification

As of June 24, 2016, ships flying the Danish flag are being digitally certified, making Denmark one of the first countries to put an end to the 100-year-old tradition

Prince Charles Places Final Section of UK Aircraft Carrier

The second of the largest warships ever built for the U.K. Royal Navy, the Queen Elizabeth Class carrier HMS Prince of Wales, was given the royal seal of approval when HRH The Prince of Wales,

US Navy Accepts Delivery of Future USS Montgomery

The U.S. Navy has accepted delivery of future USS Montgomery (LCS 8) during a ceremony on June 23 at the Austal USA shipyard in Mobile, Ala.   Marking the official

Maritime Safety

Ailing Mariner Medevaced off Alaska

An ailing crewmember aboard the fishing vessel Seafreeze Alaska was medevaced approximately 195 miles north of Cold Bay, Alaska, Thursday.   A Coast Guard Air

More than 2,000 Migrants Rescued at Sea -Italy Coastguard

Ship crews pulled more than 2,000 migrants from overcrowded boats in the Mediterranean on Friday, Italy's coastguard said, as people smugglers stepped up operations

Seven Indonesian Sailors Kidnapped in Philippines

Seven Indonesian sailors have been taken hostage in the Sulu Sea in the southern Philippines, Indonesia's foreign minister said on Friday, the latest in a string

Classification Societies

Denmark Adopts Digital Ship Certification

As of June 24, 2016, ships flying the Danish flag are being digitally certified, making Denmark one of the first countries to put an end to the 100-year-old tradition

RS Rules Conform to the IMO Goal-based Standards

The rules of the Russian Maritime Register of Shipping are in conformity to the International Maritime Organization (IMO)goal-based standards (GBS), the IMO’s Maritime

LR Suggests Locations for In-water Surveys

Lloyd’s Register has recently re-appraised its guidance on locations where an In-Water Survey may be carried out.   Traditionally, these locations were known as ‘Approved Locations’,

Wind Power

Ulstein Delivers for BS Offshore

The first of two service operation vessels (SOV) ordered in 2015 by Bernhard Schulte Offshore (BS Offshore) and its client Siemens from Ulstein Verft in is now completed,

Maritime Projects Continue Shaping Rhode Island’s Future

When I visit Rhode Island, one of the first things I notice its extensive water resources available for tourism, sports and commerce not to mention the ability

Severe Weather Forecast for Port Kembla, Australia

The Harbour Master at Port Kembla has issued a notification of potential severe weather forecast for the next 72 hours (18-21 June). The port remains open and conditions will be monitored closely.

 
 
Maritime Careers / Shipboard Positions Maritime Standards Naval Architecture Pipelines Pod Propulsion Port Authority Ship Electronics Ship Simulators Sonar Winch
rss | archive | history | articles | privacy | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.1027 sec (10 req/sec)