Corrosion Under Insulation (CUI)

Water ingress causes damage to pipework

Corrosion Under Insulation (CUI)

Alliance carry out Corrosion Under Insulation (CUI) surveys across the UK and is perhaps one of the most significant integrity threats that the oil and gas industry faces today.

Water ingress causes damage to pipework and other susceptible steel elements, but the corrosion process underneath existing insulation materials is one of the most difficult to prevent.

The removal and reinstatement of insulation is labour intensive, expensive and in many instances completely unnecessary, as the substrate can often be found to be in good condition.

One of our API 570 Piping Inspectors take care of the whole process and only removing the minimum of lagging to ensure a fit for purpose report can be compiled.

Alliance relies on Pulsed Eddy Current (PEC) as it is one of the most effective and efficient methods of determining the severity of CUI with minimal intervention, reducing the costly need for insulation removal and replacement in certain situations.

Alliance can provide you with full compliance, by means of a thorough examination by fully qualified API 570 Inspectors, NDT Non-destructive testing of piping.

  • On Site PCN Technicians and API Inspectors available
  • Multiple NDT techniques available
  • Availability 24/7
  • Full comprehensive Fit for Purpose reports

Technicians and Inspectors available throughout the UK

Alliance carry out Corrosion Under Insulation (CUI) surveys throughout in the UK. Our Technicians are all qualified in PCN and API 570 and produce full (fit for purpose) reports, (CUI) surveys are normally carried out in conjunction with other NDT methods to produce a comprehensive inspection service.

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