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 Revision: Edition, October ; Published Date: October ; Status: Superseded By: Superseded By: DNVGL-RP-E; Document Language: English.
||24 October 2011
|PDF File Size:
|ePub File Size:
||Free* [*Free Regsitration Required]
Students Click Here Join Us! The offshore oil and gas industry uses synthetic fibre ropes across various mission-critical activities where performance and reliability are key concerns.
Close this window and log in. Therefore, recommendations were made to investigate the condition of the unstable pipeline region. The RP is intended to serve owners, system integrators, rope manufacturers, manufacturers of load-bearing synthetic yarns and coating, and termination hardware products. These include mooring systems, lifting slings, and deepwater deployment and recovery systems for subsea infrastructure.
Defense manufacturing is all about project manufacturing and project accounting. Sign up to our newsletter to keep up-to-date with free webinars and white papers, latest news and exclusive offers. 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.
Red Flag This Post Please let us know here why this post is inappropriate. Can’t find what you are looking for?
Join your peers on the Internet’s largest technical engineering professional community. 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. Stability was re-assessed using the revised water depth which showed the region to be stable.
For the remaining unstable 5km region, the stability analysis was re-assessed using the generalised lateral stability and absolute lateral stability methods outlined in DNV-RP-F Promoting, selling, recruiting, e3005 and thesis posting is forbidden.
Gp content is available to members only. Digital Transformation may be defined in a number of different ways by analysts or enterprise software vendors. Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
differences between DNV RP E and DNV RP F – Off-shore structure engineering – Eng-Tips
The tension versus stretch behaviour of synthetic rope, which is fundamentally dn to that of steel wire rope.
This showed the region was still unstable, despite the reduction in conservatism between the design codes.
That’s right, but some data in the version are not clear and I think I will need to go back to the version: 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.
It emphasises the following key aspects: You should read the first sentence of the Introduction: A major operator asked us to undertake a stability analysis of a 20″ trunkline to ensure the pipeline was stable. 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.
However, a regular wave analysis using Stokes 5th wave theory showed the pipeline as stable for waves smaller than the hundred year significant wave height combined with the ten year maximum current. It’s easy to join and it’s free. Signup to our newsletter Sign up to ndv newsletter to keep up-to-date with free webinars and white papers, latest news and exclusive offers. Click Here to join Eng-Tips and talk with other members!
The integrated system behaviour is also very important in offshore mooring.
Case Study: Assessment of pipeline on-bottom stability to DNV-RP-E and DNV-RP-F
The Eng-Tips staff will check this out and take appropriate action. Download Now White Paper: It emphasises the following key aspects:. Please sign in or become a member for free. Posting Guidelines Promoting, selling, recruiting, coursework and thesis posting is rrp.
New DNV GL RP on offshore fibre ropes
To further reduce conservatism, an OrcaFlex analysis was performed by modelling a 1km section of the pipeline and ddnv the hundred year significant wave and ten year current using an irregular wave analysis JONSWAP wave spectrumwhich simulated a three hour storm. By joining you are opting in to receive e-mail.
Download Now Defense manufacturing is all about project manufacturing and project accounting.
The strength and endurance of synthetic rope, which is fundamentally different to the strength and endurance of steel-wire rope on the basis that mechanisms are different.