APPLICATION 17 · POWER GENERATION

Boilers, headers and steam drums

Inspection and condition assessment of pressure-retaining components exposed to high temperature, pressure cycling and service-related degradation. 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.

Boilers, headers and steam drums
Application & Asset Overview

Boilers, headers and steam drums

Inspection and condition assessment of pressure-retaining components exposed to high temperature, pressure cycling and service-related degradation. 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

  • General or localised corrosion, erosion and service-specific material degradation.
  • Weld, nozzle or attachment cracking associated with fatigue, thermal cycling or stress concentration.
  • Distortion, support deterioration, lining damage and defects at pressure-boundary transitions.

How IAIS UAE may support

  • Establish a damage-mechanism-based plan covering shells, heads, nozzles, welds, attachments, supports and accessible internals.
  • Use visual, ultrasonic, surface and volumetric examination methods selected for material, geometry and expected damage.
  • Characterise reportable indications and provide data for remaining-life, fitness-for-service or repair-engineering review where required.
Outputs & Requirements

Typical outputs and applicable standards

Typical outputs

Equipment inspection report, thickness grids, weld/NDT records, condition photographs, anomaly classification and action list.

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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