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Crack repair and dimensional restoration
Stay Vanes
In-place stay vane repair, weld overlay, NDE support, and restoration work for embedded hydro components.
For hydro plant teams
Where this fits.
For plant superintendents and generation teams managing embedded-component damage where removal is expensive, impractical, or outside the outage plan.
Failure modes
- Cracking at vane transitions and high-stress areas
- Cavitation, erosion, and corrosion loss
- Profile damage that affects flow surfaces
- Access constraints around stay rings and embedded steel
Field methods
- Site access planning and work-area setup
- NDE coordination before and after repair
- Weld repair, overlay, grinding, and blending
- Dimensional checks against available drawings or field references
Documentation
- Crack maps and repair-area photos
- NDE summary and owner hold-point notes
- Weld repair and finish-restoration summary
- Recommendations for monitoring at the next outage
Call HRS when
- A stay vane crack is found during inspection
- An embedded component needs repair without full removal
- The plant needs a documented field repair for owner review
- Access, safety, or fit-up makes the repair hard to scope from a desk
Proof points
Documentation your outage team can use.
In-place repair approach for embedded hydro components
Crack repair, weld overlay, and finish restoration
Field documentation built around owner QA requirements
Practical support when inspection findings change the outage plan
Next step
Need this scoped for an outage?
Send the asset, symptoms, outage window, photos available, and any QA or owner documentation requirements.