DNV RP E305 PDF

RP E On-Bottom Stability Design of Submarine Pipelines. General. This Recommended Practice replaces the following Veritec publications,. None. Hello you guys, I would like to know what are the differences between the two recommanded practices of DNV: DNV RP E and DNV RP. Revision: Edition, October ; Published Date: October ; Status: Superseded By: Superseded By: DNVGL-RP-E; Document Language: English.

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Students Click Here Join Us! Please sign in or become pr member for free. It emphasises the following key aspects:. Read the article online at: For full functionality of this site it is necessary to enable JavaScript. You should read the first sentence of the Introduction: By verifying pipeline stability based on the as-built concrete coating thickness against the original stability design code, DNV-RP-E, it was possible to conservatively determine that one of the regions was stable.

The on-bottom stability analysis was dnnv according to the simplified stability analysis method outlined in DNV-FP-E ‘On-Bottom Stability Design of Submarine Pipelines’, the same methodology used in the original design.

For the remaining unstable 5km region, the stability analysis was re-assessed using the generalised lateral stability and absolute lateral stability dv outlined in DNV-RP-F A major operator asked us to undertake a stability analysis of a 20″ trunkline to ensure the pipeline was stable.

New DNV GL RP on offshore fibre ropes

The offshore oil and gas industry uses synthetic fibre ropes across various mission-critical activities where performance and reliability are key concerns. With a system perspective on mooring performance, DNVGL-RP-E provides new industry guidance for achieving cost reductions of overall mooring operations, by addressing the engineering, manufacture, and integration of offshore fibre ropes. Are you an Engineering professional? Resources Digital Transformation may be defined in a number of different ways by analysts or enterprise software vendors.

Based on the concrete coating thickness recorded in the final survey report, two regions one 3km and another 5km region of the pipeline were found to be unstable.

These include mooring systems, lifting slings, and deepwater deployment and recovery systems for subsea infrastructure. Close this window and log in.

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Promoting, selling, recruiting, coursework and thesis posting is forbidden. The tension versus stretch behaviour of synthetic rope, which is fundamentally different to that of steel wire rope. Red Flag This Post Please let us know here why this post is inappropriate. It’s easy to join and it’s free. Register now while it’s still free! The strength and endurance of synthetic rope, which is tp different to the strength and endurance of steel-wire rope on the basis that mechanisms are different.

Digital Transformation may be defined in a number r305 different ways by analysts or enterprise software vendors. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

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DNVGL-RP-E offshore fibre ropes guidance | Energy Global

For the 3km region, it was found that the as-laid water depth was greater than that used in the design. The as-built concrete coating thickness stated in the final survey report differed from the thickness given in the coating specification, therefore a re-assessment of stability was required. Download Now Defense manufacturing is all about project manufacturing and project accounting.

The integrated system behaviour is also very important in offshore mooring. That’s right, but some data in the version are not clear and I think I will need to go back to the version: By further attempting to reduce conservatism through DNV-RP-F and an OrcaFlex model, it was found that the second region remained unstable under the three hour storm conditions. Download Now White Paper: Can’t find what you are looking for? Sign up to our newsletter to keep up-to-date with free webinars and white papers, latest news and exclusive offers.

The solution The on-bottom stability analysis was performed according to the simplified stability analysis method outlined in DNV-FP-E ‘On-Bottom Stability Design of Submarine Pipelines’, the same methodology used in the original design.

DNVGL-RP-E RP Design, testing and analysis of offshore fibre ropes – DNV GL

To further reduce conservatism, an OrcaFlex analysis was performed by modelling a 1km section of the pipeline and applying the hundred year significant wave and ten year current using an irregular wave analysis JONSWAP wave spectrumwhich simulated a three hour storm.

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Posting Guidelines Promoting, selling, recruiting, coursework and thesis posting is forbidden. The design dmv showed that the worst case environmental loading was e3055 hundred year wave and then year current combination.

This content is available to members only. The benefits By verifying pipeline stability based on the as-built concrete coating ddnv against the original stability design code, DNV-RP-E, it was possible to conservatively determine that one of the regions was stable.

Defense manufacturing is all about project manufacturing and project accounting.

However, a regular wave analysis using Stokes 5th wave theory showed the pipeline as stable for waves smaller than the hundred year significant ndv height combined with the ten year maximum current. Area dp interest Engineering Training. The Eng-Tips staff will check this out and take appropriate action. Offshore Fibre Rope should be analysed on the basis of amount of load-bearing material in the cross section, and the characteristics of the material used.

This showed the region was still unstable, despite the reduction in conservatism between the dbv codes. Therefore, recommendations were made to investigate the condition of the unstable pipeline region. It emphasises the following key aspects: Join your peers on the Internet’s largest technical engineering professional community.

Hello you guys, I would like to know what are the differences between the two recommanded practices of DNV: Stability was re-assessed using the revised water depth which showed the region to be r. This showed the pipeline was unstable using these extreme storm conditions.

The RP is intended to serve owners, system integrators, rope manufacturers, manufacturers of load-bearing synthetic yarns and coating, and termination hardware products. Click Here to join Eng-Tips and talk with other members!