Collaboration Tackles Sea Spray Icing Challenges

Posted by Eric Haun
Tuesday, August 26, 2014
Photo: DNV GL

Sea spray icing is one of the major challenges when operating in Arctic conditions. DNV GL is now launching an industry collaboration which will develop a simulation model that bridges functional winterization requirements and real physical conditions for drilling rigs, production platforms and vessels. Experts from both the maritime and oil and gas industries are invited to join the new Joint Industry Project (JIP) ‘RigSpray’.

“We aim to ensure that the design of icing-mitigation measures delivers both safety and cost benefits,” said Per Olav Moslet, Arctic Technology Program Director at DNV GL.

Today, the operational capabilities of conventional vessels and offshore structures do not meet the requirements for operating in harsh Arctic conditions. The trend towards increased activity in the Arctic and especially the ice-free areas means that the issue of sea spray icing needs to be addressed.

“Sea spray icing poses a threat on multiple levels, from blocking the operation of essential components to jeopardizing stability and integrity and thus leading to an increased risk of capsizing,” Moslet explained.

A number of recognized standards, for example DNV GL’s offshore standard ‘Winterization for Cold Climate Operations (DNV-OS-A201)’, provide guidance on mitigating ice accumulation using specified anti- and de-icing procedures. The standards available today give requirements to safety functions and to some extent describe mitigation solutions, but do not give a specific answer to how and where they should be implemented. An optimal answer to those two questions can be given by even better understanding the physical phenomenon of sea spray icing via simulation and measurements. Overall, the benefit would be an improved safety and working environment in Arctic conditions.

To deal with this, DNV GL is therefore establishing the new RigSpray JIP and invites maritime and oil and gas experts to participate.

“We have already made progress in addressing the challenge through the MarIce JIP, where DNV GL worked together with the Norwegian University of Science and Technology and Statoil to create the world’s most advanced marine-icing model. However, this needs to be developed further. The present model still lacks an accurate representation of sea spray, which is a very important parameter for ice formation. Present knowledge of sea spray generation is limited to very local metocean conditions and sporadic vessel designs. We certainly need to fill this gap with more experimental and modeling studies,” said Olga Shipilova, DNV GL’s Project Manager for the RigSpray JIP.

The first step is to develop a software tool to further understand sea spray icing using mathematical modeling and measurements. This will provide a solid basis for extending local ice estimations to a wider spectrum of metocean and structural conditions, which in turn will lead to safer and more cost-effective winterization solutions for drilling rigs, production platforms and vessels operating in cold climate areas.

  • Image: DNV GL

    Image: DNV GL

  • Per Olav Moslet

    Per Olav Moslet

  • Olga Shipilova

    Olga Shipilova

  • Photo: DNV GL

    Photo: DNV GL

  • Photo: DNV GL

    Photo: DNV GL

  • Photo: DNV GL

    Photo: DNV GL

  • Image: DNV GL
  • Per Olav Moslet
  • Olga Shipilova
  • Photo: DNV GL
  • Photo: DNV GL
  • Photo: DNV GL

Maritime Today

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

Maritime Reporter November 2015 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds


USNS Maury Completes Acceptance Trials

USNS Maury (T-AGS 66) completed Acceptance Trials, November 6, following a week of extensive ship tests and underway events, included testing of major propulsion,

Royston Appoints New US Distributor

Diesel power engineering specialist Royston has appoint a new U.S.-based distributor, citing growing interest in its advanced Enginei marine fuel management and monitoring systems.

SSI Hires Holder for US Sales

SSI has hired CAD/CAM specialist Robert Holder as part of its sales force in the U.S. market.    According to SSI, the hiring is intended to meet the expanding

Maritime Safety

IMMA App Offers Access to Maritime Medical Stores

Deteriorating seafarer health and poorly-stocked onboard medical chests are major issues concerning maritime medical practitioners, which is why the International

R-22 Phase-out Presents Dangers and Expense -WSS

The shipping industry is facing price, supply and safety risks in the run-up to the global ban on R-22 (chlorodifluoromethane or HCFC) refrigerant, warns Wilhelmsen Ships Service,

U.S. Ups Philippines Aid as South China Sea Turmoil Builds

The United States has raised its military aid to the Philippines this year to $79 million, the U.S. ambassador said on Wednesday, as tension rises in the region

Arctic Operations

Cammell Laird Seals the Deal for UK Polar Ship

The deal has been finalized for marine and engineering services company Cammell Laird to begin work on the U.K.’s new £200 million polar research ship.   The

Wärtsilä Propulsion for Antarctic Icebreaker

A new Polar Logistics Vessel being built for Terre Australes et Antarctiques Françaises (TAAF) and the French Polar Institute (IPEV), and which will be operated by the French Navy,

Warm Water Mixing up Life in Arctic

AWI researchers’ unique 15-year observation series reveals how sensitive marine ecosystems in polar regions are to change The warming of arctic waters in

Classification Societies

ClassNK Drafts Amendments to Containership Rules

Classification society ClassNK has released draft amendments to its rules and guidance for container carriers, with the aim of implementing more comprehensive rules for increased ship safety.

Largest Underwater CO2 Release from Pipeline - DNV GL

Carbon capture, utilisation and storage (CCUS) is gaining momentum to meet stringent climate change goals and secure energy supplies for the future. To fully

LR to Class Nine Tankers for Maersk

Lloyd’s Register (LR) won the deal for classification of nine Medium Range (MR) type product tankers. Owned by Maersk Tankers, the vessels are to be built at Samsung’s Ningbo yard in China.

Offshore Energy

Ship Conversion: Offshore Survey Vessel to Become a Flotel

Dutch shipowner C-Bed has contracted Wärtsilä Ship Design to supply the design for rebuilding its Seismic Survey Vessel, the Viking II, for use as a hotel vessel

Deepwater Downturn: Bump in the Road or Long-Term Slowing of Growth?

IMA/World Energy Reports has just completed a comprehensiveassessment of the five year outlook for the deepwater sector.  The new report – the 19th annual floater

Tidal Energy from Deep and Slow Waters

Deep Green, an underwater kite construction from the Swedish company Minesto, is set to be deployed in 2017 at the Holyhead Deep site off the coast of Anglesey, Wales.

Maritime Contracts Maritime Standards Navigation Offshore Oil Pipelines Pod Propulsion Port Authority Salvage Ship Simulators Sonar
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: 0.1815 sec (6 req/sec)