APPLICATION 18 · POWER GENERATION

Superheater, reheater and economiser tubes

Tube-condition evaluation for wall loss, oxide buildup, overheating, cracking and other damage affecting operational reliability. Within thermal and conventional power assets operating under cyclic, high-temperature and high-pressure duty, this asset can directly influence availability, pressure-part reliability, outage optimisation and safe long-term operation. A focused integrity programme should therefore connect the design basis, materials, service history, previous findings and current operating condition, so that inspection effort is directed to credible damage locations and produces information that supports practical maintenance decisions.

Superheater, reheater and economiser tubes
Application & Asset Overview

Superheater, reheater and economiser tubes

Tube-condition evaluation for wall loss, oxide buildup, overheating, cracking and other damage affecting operational reliability. Within thermal and conventional power assets operating under cyclic, high-temperature and high-pressure duty, this asset can directly influence availability, pressure-part reliability, outage optimisation and safe long-term operation. A focused integrity programme should therefore connect the design basis, materials, service history, previous findings and current operating condition, so that inspection effort is directed to credible damage locations and produces information that supports practical maintenance decisions.

Integrity Focus

Principal considerations and IAIS UAE support

Principal integrity considerations

  • Overheating, oxidation, creep, thermal fatigue and high-temperature corrosion.
  • Tube or coil thinning, cracking, bulging, distortion and support-related damage.
  • Refractory or insulation deterioration, flame or flow impingement and temperature-driven material change.

How IAIS UAE may support

  • Use operating history and known temperature zones to focus inspection on susceptible pressure parts and structural components.
  • Combine visual assessment, thickness measurement, surface/volumetric NDT, dimensional checks and materials evaluation as appropriate.
  • Document active damage, compare deterioration trends and support outage repair or continued-operation decisions.
Outputs & Requirements

Typical outputs and applicable standards

Typical outputs

High-temperature asset condition report, tube or component maps, NDT results, damage ranking, repair priorities and monitoring guidance.

Codes & standards

The activity may be planned and reported against the applicable provisions of ASME BPVC Sections I, V, VIII and IX, ASME B31.1, API 579-1/ASME FFS-1, ASTM, ISO and owner requirements. Final references and acceptance criteria remain subject to approved project and statutory requirements.

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