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- Determination of threshold weather criteria (waves, currents).
- Modelling of object hydrodynamics;
- Analysis of lifting operations during water-surface crossing and rationale for rigging equipment selection/ sizing;
Dynamic analysis of splash-zone crossing operations allows to select and provide rationale for design solutions for safe equipment installation, and determine threshold weather criteria to allow operations.
Analyses to be completed include:
Analyses to be completed include:
Numerical Modelling is a set of engineering analyses performed as part of the efforts to design new systems and equipment or ensure operation of the existing facilities.
Numerical modelling is completed as a number of analyses run in specialised software, using methods based on industry standards and requirements.
The ultimate goal of modelling is to check for compliance with specific parameter values set forth by the relevant standards, to ensure safe installation, start-up and operation of equipment and facilities.
Numerical modelling is completed as a number of analyses run in specialised software, using methods based on industry standards and requirements.
The ultimate goal of modelling is to check for compliance with specific parameter values set forth by the relevant standards, to ensure safe installation, start-up and operation of equipment and facilities.
- Static and dynamic stress-strain analyses of pipelines, taking into account stinger configuration, pipelay vessel AFR, seabed topography, soil properties, and wave and current loads;
- Check for compliance with international codes of standards.
- Identification of pipelay limitations;
Modelling of offshore pipelay operations is completed to select the configuration of a pipelay vessel and determine weather limitations, to ensure the safety of pipelay operations. Numerical modelling for offshore pipelay is run in licensed specialised software in line with DNV and RMRS codes, and comprises:
On-bottom stability analysis is an integral part of pipeline configuration verification along the entire route for all operating conditions. Strength and stability analyses of pipelines are performed as per the methods set forth in DNV and GOST standards. They are run to estimate the pipe wall thickness of, and required concrete coating parameters for subsea pipelines, with due regard for hydrodynamic loads, as well as loads which occur during construction, testing, and operation.
Numeric modelling allows to analyse:
Numeric modelling allows to analyse:
- Distribution of free spans along pipeline route.
- Load controlled condition (LCC) value;
- Maximum embedment;
- Maximum stresses along pipeline route;
- Maximum bending moments along pipeline route;
- Maximum lateral displacements of pipelines;
Flow assurance analysis is a comprehensive study of behaviour of liquids and gases in pipeline systems with a focus on ensuring trouble-free and safe transportation of products.
The key analysis aspects are:
The key analysis aspects are:
- Risk analyses of deposition of paraffin, asphaltenes, and resins, and hydrate formation.
- Development of mitigation actions, and performance of an operability study to analyse the risks associated with loss of containment, controlled discharge and emergency shutdown of pipelines;
- Definition of flow conditions (bubble, slug, stratified, annular flows);
- Flow dynamics analysis: liquid pressure and temperature, volume flow rates, gas and liquid velocities, etc.;
- Steady-state vs. transient analyses of pipeline systems;
