Workscope: Diaphragms Inspection and Repair
Diaphragm Inspection
- Visually inspect diaphragm
- Blast clean and NDE
- Perform dimensional inspection
- Report incoming conditions
Diaphragm Partition Major 410ss Repair
- Cut back partitions
- Weld partitions with 410 filler wire
- Full oven stress relief
- Grind partitions to correct area and contour
- Complete area and harmonic analysis
- Perform final NDE
- HVOF spray partitions with GE DiamondTuff coating*
Diaphragm Partition Minor Iconel Repair
- Grind partitions to remove damaged area
- Weld partitions using inconel
- Grind partitions to proper contour
- Straighten and polish other partitions as necessary
- Perform final NDE
Complete Diaphragm Dishing Repair
- Machine diaphragm to remove weld at inner and outer rings
- Mount diaphragm to stress plate, and jack to drawing location
- Restore welds at inner and outer rings
- Weld build-up packing bore and cavity
- Weld build-up root radial spill strips
- Weld appendage I.D. and dovetail area for radial spill strips
- Stress relieve diaphragm
- Machine the following areas to drawing dimensions:
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Packing bore and cavity |
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Root radial spill strips |
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Appendage I.D. |
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Radial spill strip dovetail |
- Stress relieve diaphragm
- Clean, deburr and record final dimensions
- Perform final NDE
Diaphragm Partial Partition Replacement
- Machine diaphragm to accept partial partitions
- Weld and machine sidewalls
- Set and weld in partial partitions
- Full oven stress relief
- Grind partitions to correct area and contour
- Complete area and harmonic analysis
- Perform final NDE
- HVOF spray partitions with GE DiamondTuff coating*
*Optional
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