Sources Sought - TDA Transformers - Attachments .pdf
PDF 3 MB Posted
- Attached to
- TDA Transformer 9-11 Interim Repair
- Solicitation number
- PANNWD24P0000001536
About this file
This sources sought announcement requests capability statements from contractors interested in performing repairs on three transformers located at The Dalles Dam. The US Army Corps of Engineers Portland District seeks contractors capable of repairing a failed high-voltage neutral conductor and improving cooling for the neutral conductor support structure on transformers T9, T10 and T11. Contractors must demonstrate experience with transformer repairs requiring tank entry, brazing or modification, oil processing and filling operations, and site movement. Capability statements are due by March 20, 2024 and should provide company information, small business classification, statement of capabilities demonstrating relevant experience, and confirmation of ability to self-perform the work or percentage to be subcontracted. The anticipated value of this repair project is between $1 million to $5 million.
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Other files
| File | Type | Posted |
|---|---|---|
| A.02 RFI Log.xlsx | XLSX spreadsheet | |
| TDA T9-T11 PWS DRAFT 2024-02-20.pdf |
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Text version
Transformer Nameplate - typical T8, T9, T10, and T11 g2hdcbjb Typewritten Text
Outline Drawing - Typical T8, T9, T10, T11 g2hdcbjb
Original Photos from General Electric Typical T8, T9, T10, T11 g2hdcbjb g2hdcbjb g2hdcbjb g2hdcbjb g2hdcbjb g2hdcbjb
Transformer T10 - winding resistance test results g2hdcbjb
Transformer T10 - visual verification of failure location as seen through 18" manhole (BOM item 52 on GE drawing 3912D461) g2hdcbjb
Transformer T8 - internal inspection prior to complete failure. Inspection precipitated due to sharp increase in dissolved gases
H1n-H2n connection on left;
H1n-H0 connect on right X1 leads pass under Hn lead
H1n-H2n connection
H1n-H0 connection g2hdcbjb
Transformer T8 - internal inspection prior to complete failure. Inspection precipitated due to sharp increase in dissolved gases
H2n-H3n connection
H2n-H3n in foreground X3 below g2hdcbjb
Transformer T8 - forensic teardown verifying failure location overall view schematic view g2hdcbjb opened neutral viewed from below
Detail of support tube
Detail of support tube with conductor showing occlusion from overheating g2hdcbjb conductor removed with junction to winding (top)
Failed conductor - no melted copper evident on any strands overheating visible back to joint where neutral jumpers join to neutral lead from winding neutral lead from winding g2hdcbjb
File details come from the government source that posted it. Updated .