Nozzles

Solutions to Suit Your Needs

The size and configuration of nozzles and diaphragms are critical to overall performance and subject to a variety of wear modes. GE's service centers use diagnostic and measurement tools to identify specific causes of wear and determine optimum solutions. Area checks are performed before repairs are begun to quantify the exact condition of nozzles and diaphragms, and afterward to certify that the flow areas meet factory specifications.

Inspections

  • Comprehensive inspection and repair recommendations
    - Nozzle plate inspection
    - Nozzle box inspection
  • Non-destructive testing

Basic Repairs

  • Major 410ss partition weld repair
    - Nozzle plate
    - Nozzle box
  • Minor inconel partition weld repair
  • Restoration of integral root radial spill strips
  • Restoration of steam face
  • Restoration of packing hook and spill strip hook fit
  • Bolt hole repairs
  • Restoration of Gib key fit(s)
  • Inlet seal ring removal and replacement
  • Honing and machining of inlet bore(s)
  • Nozzle box torus inspection and repair
  • Restoration of nozzle plate cover plate groove
  • Plasma transferred arc weld repair of stellited main steam inlet pipe

Upgrades and Modifications

  • 180° Nozzle box steam path replacement
  • Nozzle plate austenitic ring modification
  • Solid Particle Erosion (SPE) resistance
    - Diffusion coating

More Information

For a detailed service description, click the following links:

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