Diaphragm Partial Partition Replacement

Better Technology

GE's partial partition replacement method replaces the entire trailing section of the partition with an exact contour partial partition, welding it into the portion of the original partition remaining in the diaphragm. This is superior to the traditional repair method for steam turbine diaphragms, which involves grinding back the eroded partition, welding the partition over a copper chill, and hand contouring the weld by grinding it with die grinders. diaphragm partial partition replacement can be performed on any steam turbine diaphragm with a radial height over two inches.

Key Benefits

  • Exact contour increases stage efficiency by one to three percent
  • Shorter payback versus conventional repair
  • Reduces repair cycle time
  • Restores pressure and suction sides of partition to original design
  • Restores sidewalls
  • Restores areas to within ± two percent of original design
  • Improves flow passing areas of the diaphragm

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