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App.A: Examples of Documents [Table of Contents]

DNV-OSS-302 Offshore Riser Systems

[-] App.B: Applicable Software

APPENDIX B
Applicable Software

App.B
A. General

App.B
A 100   General

App.B A
101   This appendix gives an overview of the software used by DNV on different riser analyses.

App.B
A 200   Floater motions and or station keeping

App.B A
201   To establish floater motions used as boundary conditions in global riser analyses, DNV uses the following software:
—Sesam Program Package (Prefem, Preframe, Wadam/Wamit)
—Simo: Simulation of complex marine operations and global performance of floating structures
—MIMOSA: Stationkeeping analysis of moored offshore structures
—Swim-Motion-Lines (SML): Time domain program for calculation of global performance of floating structures taking into account wind, waves and current
—DNV/Marintek software DeepC: Analysis tool for global performance of floating structures using coupled/de-coupled time domain analyses (SESAM Product based on RIFLEX/SIMO).

App.B
A 300   Global Load Effect Analysis

App.B A
301   Global riser analyses are used to calculate resulting cross-sectional forces, global riser deflections, global riser position, support forces at termination to rigid structures, stroke etc. DNV uses the following software:
—MCS software Freecom-3D: Three dimensional finite element frequency domain analysis program
—MCS software Flexcom-3D: Three dimensional finite element time domain analysis program
—Marintek software Riflex: Finite element computer program for slender structure analysis
—DeepC (ref. A 200).

App.B
A 400   VIV Analysis

App.B A
401   DNV use the following software for running VIV analyses:
—Shear-7: VIV response prediction tool for risers, which uses mode superposition methods
—VIVANA:VIV program for slender marine structures based on empirical hydrodynamic coefficients.

App.B
A 500   Interference analysis

App.B A
501   DNV use the following software for checking of interference between mooring lines - risers or risers-risers:
—MCS Clear-3D: Three dimensional riser clearance analysis (Compatible with FLEXCOM-3D)
—DeepC (ref. A 200).

App.B
A 600   Components and Detail Analysis

App.B A
601   DNV use the following software for component analyses:
—Ideas
—Advance/Abaqus: General purpose nonlinear finite element structural analysis program
—Program for weldability and weld cracking evaluations
—CRACKWISE and FATIGUEWISE for fracture mechanics assessments
—Spread sheet for cathodic protection design calculations
—Program 'COMCAPS' for calculating the performance of designed cathodic protection systems
—Program 'CORROLINE' for prediction of material loss in pipeline.

App.B
A 700   Structural Reliability Analysis

App.B A
701   For structural reliability analyses, DNV use the following software:
—Proban
—Proinsp.

App.B
A 800   Capacity checks of steel risers

App.B A
801   DNV uses the following postprocessors for calculation of utilisation and fatigue life:
—DNV postprocessor Riser life (ULS, FLS)
—DNV postprocessor Casper (capacity checks based on DNV-OS-F201)
—MCS Flexcom-3D Database/Timetrace Postprocessor
—MCS Life-3D (FLS, frequency domain).

App.B
A 900   Capacity checks of flexible risers or umbilicals

App.B A
901   Cross section analyses are carried out with the software:
—Caflex: Cross-sectional analyses of composite cross-sections (flexible risers, umbilicals, wire ropes etc).
App.A: Examples of Documents [Table of Contents]