LIRA Condition Monitoring

Fault-free operations require highest quality and respectively quality control during manufacturing and installation, and accurate and sensitive cable condition monitoring during operation.

The highest cable-specific requirements on quality measurements are set by ISO 13628-5, design and operation of Subsea Umbilical’s. Measurements are required for the following steps:

  • At Cable Manufacturer:
      – components acceptance test
      – condition control
  • At Umbilical Manufacturer:
      – post umbilical manufacture
      – condition control
      – umbilical final acceptance test (FAT)
      – condition control
  • At Loadout to Installation Vessel:
      – pre loadout test
      – post loadout test
  • Transport & Installation:
      – integrity monitoring during lay
  • Post Installation
      – condition control
  • Trenching & Rock dumping:
      – pre & post condition control
  • Pre Connection (connection is typically performed some time after installation):
      – condition control
  • Post Connection:
      – condition control
  • During Operation:
      – monitoring
      – regular condition control

Our Cable Condition Monitoring Services performed with LIRA Technology will ensure highest quality from the first moment, as LIRA can detect all deteriorations and their severity which might have been induced during manufacturing, installation and operation.
All measurements data will be stored like a fingerprint for future introduction of condition based maintenance (CMB) based on regular assessments or incident based assessments-

Benefits of LIRA cable condition monitoring:

  • Actionable input for asset management plans and maintenance strategy developments
  • Enables high availability at reduced total cost of ownership
  • Improved knowledge base enables reduced emergency repairs
  • Valuable input for network operation based on cable condition information
  • Additionally, consequence and necessary corrective action caused by accidental mechanical impact can be assessed more accurately by performing LIRA measurements to assess if the dielectric properties are changed

LIRA Features:

  • Best-in-class cable diagnostic system
  • Sensitive to small degradation and defects
  • Accurate Hot-Spots and deviations location
  • Non-intrusive and non-destructive
  • Applicable on multi-segment systems with different cable types
  • Pre-study/simulation of cable data and defects
  • Fast and simple connection to test object
  • Only one access point needed
  • “Zooming” feature to zoom in on the blind zone at the near end termination – at cable landfalls, in J-tubes, at subsea terminations, etc.

Cable Condition Monitoring applies to:

  • Transmission & Distribution Grid Owners
  • On- and Offshore Wind Farm owners
  • Subsea interconnector owners
  • Export Cable Owners for Offshore Wind Farms
  • Process Industry
  • Power Cables and Umbilicals in Oil- and Gas Industry
  • (Nuclear) Power Plants – I&C and Power Cables
  • Cable Manufacturers – Reference Measurements – Quality Control

A Breakthrough in cable assessment