Subsea

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Dalltech provides world class subsea support in provision of key subsea services and equipment sourced from manufacturers and partners with unrivalled quality, we have links to network of subsea companies who are leaders in tailored subsea applications worldwide.

INSPECTIONS MAINTENANCE REPAIR (IMR)

EMERGENCY REPAIR SYSTEM (ERS)

  • Failure modes catalogue
  • Repair scenario definition
  • Critical path optimisation
  • Repair solutions (spare, kit design /installation, contracting strategy,…)

INSPECTION & MONITORING SERVICES

  • Inspection plan definition
  • Site support work preparation
  • Site follow-up
  • Back office reporting & recommanded corrective actions.

MAINTAINANCE & INSPECTION ENGINEERING (MIEC)

  • Maintainability/Inspectability
  • Criticality & Risk Assessment
  • Inspection / Monitoring/Intervention
  • Spare parts review & recommendations
  • Subsea schematics (SPS + SURF)


SUBSEA SYSTEMS DESIGN

DESIGN

  • Pipeline/Riser Design
  • Subsea structural design including ROV interfaces
  • Pipeline integrity verification and re-qualification
  • Fabrication Drawings

FABRICATION SUPERVISION

  • Supplier Selection
  • Site Construction Follow-Up
  • Equipment Qualification and FAT/SIT Testing

STRUCTURE & HYDRODYNAMICS

  • Modelisation of Dynamic Systems
  • Fatigue Life Determination
  • Interference Study
  • Vortex Induced Vibration Analysis


SUBSEA SYSTEM INSTALLATION

INSTALLATION SUPERVISION

  • Site fabrication supervision
  • Subsea installation supervision
  • Diving & ROV works

INSTALLATION METHODS

  • Deepwater SPS/SURF
  • Classical field: Pipeline/Spool/Cable
  • Shore approach
  • Pigging / Precommissioning
  • Installation aids definition & design

INSTALLATION ANALYSIS

  • Lifting analysis
  • Installation hydrodynamic analysis
  • Seafastening analysis
  • Pipeline/Cable/Umbilica.
  • laying analysis


PROCUREMENT

  • Umbilicals, Cables and End connectors.
  • Flexibles
  • Plem, Plets, SHO
  • Risers and Flexible Flowlines
  • Flowlines / Pipeline Jumpers
  • Manifolds
  • SDU, UTA, Pipelines, Clamps
  • Buoyancy Materials, Bumpers, Cable and Flowline Protection products
  • Bend Restrictors


SUPPLY CHAIN MANAGEMENT

  • Subsea equipment procurement
  • Subsea spares
  • ROV sourcing
  • ROV Tolling
  • Provision of working vessels Etc.

We are providing good & on time services to our valuable customers.