Remaining Life Assessment & Extension

ETD Consulting has established expertise in the life assessment of components from petrochemical and power plants operating in the creep regime

We can assess the remaining life of plant components under operating conditions, offering real increases in safe operating life or increase in inspection intervals where appropriate. Advanced warning of creep, creep/corrosion and creep fatigue failures can avoid expensive unplanned outages while avoiding undue maintenance or premature replication surveys. Improved repair welds, including cold weld repairs, can reduce the delay in returning a plant to service and may be suitable for long term service, thus avoiding replacement at the next scheduled outage.

Click here to access any of ETD's downloadable service brochures, including P91 & P92 Inspection.

For more information about of Remaining Life Assessment & Extension services please contact us.

In many boilers and petrochemical heat exchangers, the design life of the unit is determined by the creep properties of the heat exchanger tubing.  In almost all cases the initial tube thickness will be greater than the theoretical minimum used in the original calculations, resulting in lower operating stresses than those used to calculate the design life.  The actual life of the tubing depends on the real properties of the tubing, the rate of tube thinning (due to corrosion and/or erosion) and the operating conditions throughout the units life.  


ETD can provide a full Component Life Assessment service

 Which can include the following - 

  • On-site inspection using advanced NDE
  • Metallographic evaluation
  • Review of design drawings
  • Finite Element modelling and stress analysis
  • Remaining Life Assessment calculations
  • Development of inspeciton procedures
  • Life Extension recommendations
  • Weld repair (including advanced techniques for cold weld repair)
  • Component replacements where appropriate