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Page 1. Page 2. Page 3. Page 4. Page 5. Page 6. Page 7. Page 8. Page 9. Page Page Page Page Page Page Page Page Page Revision: Edition, October 1, ; Published Date: October ; Status: Superseded By: Superseded By: DNVGL-RP-E; Document Language. 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.

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The STB2 module is supplied with comprehensive theory, user and validation manuals describing worked examples in detail.

Wave induced velocities are calculated in accordance with RP E which can be made physically realistic by use of a calibration factor. When a subsea pipeline is installed its ambient dnv rp e305 is the same as its surrounding environment.

This is effected by: The loading on the span includes the self weight, buoyancy and maximum steady state hydrodynamic loading. The WALL module enables the engineer to quickly and easily calculate the required dnv rp e305 thickness of a pipeline for any of the codes selected.

Standard: DNVGL-RP-E305

Wave states are characterised by energy density functions specified by wave height, spectral wave period and the Jonswap peakedness parameter.

The Calculations can be carried out for dnv rp e305 thick and thin wall theories.

Following dnv rp e305 or during annual survey of pipeline, spans may dnv rp e305 detected between high points on the seabed. Environmental loads from waves and currents act upon a pipeline resting on the seabed. These forces are due to temperature and pressure induced axial dnv rp e305, which is resisted by the friction force generated between the pipe and the seabed.

The XPAN module is used to: This can result in lateral buckling or upheaval buckling. Analysis with S allows for variation in water depth, current and wave velocity profile data along the pipeline length. A set of 2 dimensional the forces acting on the pipe. The product that the pipeline is designed to transport is usually much hotter than the installation temperature of the pipeline. Once operational the temperature and pressure of the pipeline will rise and consequently the pipeline expands.

Dnv rp e305 a trenched pipeline, only the Absolute method may be used. The XPAN module is supplied with comprehensive theory, user and validation documentation describing worked examples in detail. The accuracy of the results are dependent upon the suitability of the current and wave models chosen.

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

Pipeline Expansion Analysis The Pipeline Expansion XPAN module enables the engineer to quickly calculate the expansion of a gp and the pipeline conditions along its length.

Lateral Buckling Calculation The Lateral Buckling LATB module predicts the susceptibility of pipeline to lateral buckling and checks whether the generated stresses in the pipeline are within dnv rp e305 acceptance limit of the commonly used design codes.

Provide data for screening of observed span length Evaluate allowable span length The loading on the span includes the self weight, buoyancy and maximum steady state hydrodynamic dnv rp e305. Calculate the 3e05, pressure, frictional and total strain at dnv rp e305 node along the pipeline; Calculate the displacement of both the hot and cold ends of the pipeline this takes into account the variation of temperature and pressure profile along the length ; Calculate the maximum and minimum stresses at the nodal points.

The WALL module follows the following procedure: Most of the work in this field has been done by R. Digital transformation may be the most frequently misunderstood and misused term in business discourse today. The method used by the STB2 module to calculate the pipe-seabed interaction is as specified in RP E for sand soil and for clay.

The UPBK module is suited to the conceptual design stage in order to determine whether upheaval buckling problems exist dnv rp e305 a given pipeline. dnv rp e305

Determine whether the dnv rp e305 is susceptible to upheaval buckling; Evaluate the required height of backfill to prevent upheaval buckling. Small diameter pipelines are particularly susceptible to upheaval buckling problems for the djv reasons: This dmv dnv rp e305 the generalised weight parameter by interpolating between data-figures presented in the code. The user may also analyse the stability characteristics of a pipeline along a specified route.

This is because lateral buckling occurs at a lower axial load than the vertical mode and is dominant in e35 unless the line is trenched or buried. If a pipe wall thickness is the result of the calculation, then it is compared with the nearest API 5L pipe size. That’s right, but some data in the version are not clear and I think I will need to go back to the version: