Dnvgl News

Pic: DNV GL

DNVGL: New Mooring Line Solution for Offshore Ops

DNV GL has developed a solution that is designed to reduce the risk of offshore floating vessel mooring line failure going undetected by replacing physical sensors with a machine learning algorithm that accurately predicts line failure in real time.The Norwegean company's Smart Mooring solution addresses growing industry concern about the high frequency of mooring line failure, and a vessel’s subsequent loss of station. Over the past two decades, more than 20 incidents have been reported globally involving failure of permanent mooring systems on floating structures.In the most severe cases

Wellhead schematic (Photo: DNV GL)

New Recommended Practice for Wellhead Fatigue Analysis

DNV GL releases new recommended practice for wellhead fatigue analysis to improve analysis consistency in the industry.The recommended practice(RP) DNVGL-RP-E104 Wellhead fatigue analysis has now been published. This publication is the result of a phase 2 Joint Industry Project (JIP) involving 16 oil companies and supersedes the April 2015 edition of DNVGL-RP-0142.The content of the updated RP provides specific recommendations on how to perform wellhead fatigue analysis in a consistent manner, and how to solve what have been considered as the main challenges related to wellhead fatigue analysis.

The ability to produce metal parts in a 3D printing process anywhere holds great promise for the maritime sector. The picture shows a 3D-printed aluminum replica of a mooring chain testing bed at the DNV GL lab in Bergen (Image: DNV GL)

DNV GL: First Class Guideline for Additive Manufacturing

.   “We have been investigating the potential of 3D printing for the maritime and oil & gas sectors since 2014,” said Marit Norheim, Vice President, Material Specialist, Hull, Materials & Machinery at DNV GL – Maritime. “With the introduction of the class guideline DNVGL-CG-0197, DNV GL is now ready to certify and support our customers and industry stakeholders to take advantage of this rapidly maturing technology. It will give end users confidence in the products and allow suppliers to offer their technologies and products for use in vessels and offshore installations

(Credit: Rolls-Royce)

Research Vessels: The Fleet is In

; will supply two six-cylinder Wärtsilä 20DF dual-fuel engines capable of running on either LNG or conventional liquid fuels, one six-cylinder Wärtsilä 20 engine, two exhaust cleaning systems and a Wärtsilä LNGPac fuel storage, supply and control system. The ship fulfills the DNVGL classification society’s ‘Silent R’ rating, thus allowing the sonar equipment to be used without disturbance from underwater radiated engine noise.   Kongsberg’s Integrated Vessel Concept for research vessels delivers a fully integrated operator environment, equipped

rendering of the Atair; first vessel in the BSH fleet with LNG technology  (Photo: Wärtsilä)

Germany Orders LNG Fueled Research Ship

this classification when running in gas mode, and all the engines will be compliant when operating on diesel because of the Wärtsilä SCR systems. The engines will be double elastically mounted to minimize the noise. This special Wärtsilä technique will enable the ship to fulfill the DNVGL classification society's 'Silent R' rating, thus allowing the sonar equipment to be used without disturbance from underwater radiated engine noise.   “Our dual-fuel technology is unique when it comes to small bore medium speed engines, and the extended service intervals and economic

Subsea closeup illustration screen version (Photo: DNV GL)

A New Standardization for Subsea Forgings

times. A joint industry project (JIP), led by DNV GL, has now taken the next step in subsea standardization by harmonizing requirements for quality management of forgings.   The recommended practice (RP) ‘Steel forgings for subsea applications – quality management requirements’, DNVGL-RP-B202, will enable delivery of high quality forgings at reduced delivery times and cost.   Complementing the RP ’Steel forgings for subsea applications’ (DNVGL-RP-0034), which harmonizes the technical requirements, the new guideline DNVGL-RP-B202 provides a unified approach to

Image: Webtool

New Tool for Subsea Umbilical & Cable Recovery

systems specialist Webtool has introduced a new gripping and lifting tool for recovering subsea umbilical and cable for offshore oil and gas and decommissioning projects. The Cable Retrieval Tool (CRT200), developed in consultation with international certification body and classification society, DNVGL, allows the safe and controlled recovery of damaged cable and umbilical, up to 8” (203 mm) diameter.    Current methods of recovering umbilicals for repair or replacement involve trenching the seabed around the cable or umbilical to allow a double choke sling to be attached using

Photo: DNV GL

DNV GL Offshore Diving Guideline Now Available in English

and health of those involved in the diving work, but also to avoid environmental damage and protect equipment and underwater assets,” concludes Hagenah.   The 67-page hardcover English version of the guideline can be ordered for 120€ plus VAT by writing an email to underwatertechnology@dnvgl.com. 

Pic: DNV GL

New DNV GL Marine Warranty Standards are a Digital First

 The energy industry’s only Standard for the warranty approval of marine operations is published  by DNV GL. The Standard is the first to deploy a digital solution that provides users with information most relevant to a specific project.   DNV GL Standard DNVGL-ST-N001 Marine operations and marine warranty, documents design and operational requirements for the temporary phases in the development of offshore assets, including transportation by water.    It covers the entire value chain, from fixed steel and concrete platforms and FPSOs to subsea operations, pipe and

Photo: DNV GL

DNV GL Initiative Aims to Cut Well P&A Costs

benign wells will avoid excessive rig-time and expenditure. We're looking at potential cost savings of more than USD32bn on the Norwegian Continental Shelf alone, and even more globally,” says Per Jahre-Nilsen, Business Development Leader, Drilling & Well, DNV GL – Oil & Gas. The DNVGL-RP-E103 'Risk based abandonment of offshore wells' is based on case studies performed by DNV GL in projects dating back to 2011. A thorough process is defined where the key stages in the risk-based methodology are assessing the well barrier failure modes, well flow potential, valued ecosystem and

Høvik laboratories-syrobe testing machine-fullscale testing (Photo: DNV GL)

DNV GL Issues RP on Offshore Fiber Ropes

The results of two DNV GL led joint industry projects (JIPs) and a JIP pre-study commissioned by Statoil are now captured in a new Recommended Practice (RP) on offshore fiber ropes. With a system perspective on mooring performance, DNVGL-RP-E305 provides new industry guidance for achieving cost reductions of overall mooring operations, by addressing the engineering, manufacture and integration of offshore fiber ropes.   The offshore oil and gas industry uses synthetic fiber ropes across various mission-critical activities where performance and reliability are key concerns. These include mooring

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