A.02 FY24 Essayons Tailshaft Repair PWS.pdf
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- FY24 Essayons Tailshaft Repairs
- Solicitation number
- W9127N24Q0096
About this file
This document is a Performance Work Statement (PWS) for the FY24 Essayons Tailshaft Repair contract. The PWS requires the contractor to repair two main propulsion tailshafts on the USACE dredge Essayons, including replacing bearing liners and repairing one shaft's hub flange. The work must be performed in accordance with the referenced Propulsion Systems Inc. (PSI) manuals and drawings. The contractor shall provide an OEM technical representative to support inspections and testing, liner installation, and final acceptance. Requirements include magnetic particle testing, lathe checks, fiberglass coating renewal, and preservation for long-term storage. The repaired shafts must be transported to the USACE facility in Portland, OR. The PWS outlines detailed specifications, testing, and inspection requirements. The related federal contract opportunity is a Request for Quote (RFQ) for the FY24 Essayons Tailshaft Repairs, issued as a total small business set-aside under NAICS code 811310. The delivery date is 90 days after award to the USACE Portland District warehouse.
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| File | Type | Posted |
|---|---|---|
| B.08_CombinedSynopsis_Amendment0002.pdf | ||
| B.08_CombinedSynopsis_Amendment0001.pdf | ||
| B.01 CombinedSynopsis.pdf |
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FY24 Essayons Tailshaft Repair
01. General Repair Two (2) main propulsion tailshaft as specified below. Provide and replace three (3) bearing liners and repair hub flange on one (1) propulsion shaft. Provide and replace three (3) bearing liners on one (1) propulsion shaft.
NOTE: ABS Surveyor may request to be present at other progress points not mentioned, or require proof that ABS recommendations are being met. Contractor shall include reasonable costs for ABS inspections in their price for this work task.
02. References
Propulsion Systems Inc. Manual 2240.2 (CPP System) Propulsion Systems Inc. Dwg 22885-D Tailshaft Flange Repair Propulsion Systems Inc. Dwg 22164
Equipment Information: Propulsion Systems Inc.
ACOE Medium Dredge Shaft Application: CPP System
PSI SER# 377-378
Manuals: PSI Instruction manual J/N 3406
03. GFM
Two (2) CPP Propulsion Shaft for repair.
04. Safety Precautions
Prior to commencing work, follow vessel’s LOTO policy and procedures.
Follow all applicable state local and federal requirements including those specified in EM-385-1-1 latest revision
05. Specifications
Transport Two (2) Essayons propulsion shafts from USACE facility at Port of Portland Terminal 2 located at 3556 NW Front Ave Portland, OR 97210 to Contractor’s facility.
Provide the services of an OEM Technical Representative to support all of the listed inspections and testing, liner installation and final inspection/acceptance of completed tailshaft.
Repair of both tailshafts shall consist of the following:
Renewal of all liners.
Lathe check for concentricity Corrosion removal NDT of specified areas of the shafting Renewal of fiberglass between journals Provide and install new liners.
Protection of all surfaces for long term storage.
Repair of one tailshaft shall also include the following flange repair:
Fabricate and shrink on one 316 Stainless Steel ring on the OD of the tailshaft flange per provided PSI repair procedure 22885-D Tailshaft Medium ACOE Dredge Flange Repair.
Liners shall be 316SS, ABS inspected, hydrostatically tested @ 15psi for no less than 10 minutes.
Lathe check the shafts for TIR at each liner mid-point and on the periphery of the hub flange. Submit a condition report to the COR detailing the run outs at these locations.
After removal of the existing fiberglass, sandblast the areas between journals to an SSPC-SP10 standard. Request inspection by the COR to examine areas that show evidence of corrosion under the fiberglass coating. For bidding purposes, allow 8 hours for each shaft to perform requested magnetic particle of tailshaft in presence of COR, OEM Rep and ABS/USCG. Based upon visual inspections and NDT results, submit a condition found report to the COR detailing results and recommended repairs if any. Any necessary repairs will be subject to a modification.
Provide new liners. Machine each liner to the correct ID for appropriate shrink fit onto existing shaft.
Install new liners by uniformly heating and installing on the existing shaft. Machine OD of each liner to correct dimension as described in PSI drawings.
After installation of all liners, lathe check for TIR at each liner mid-point and on the periphery of the hub flange. Submit a condition report to COR detailing the final TIR.
Prep shaft and install fiberglass coating between liners as per original. The fiberglass coating shall be a minimum of 4 wraps. Spark test the coating in the presence of the COR.
After all repairs have been completed, coat all surfaces with a non-water soluble preservative to permit outside storage. Preservative shall be easily removable with safety solvents. Plug the open ends of the shafting with wooden damage control plugs.
Pack shaft in original cradle with slatted shaft covering.
Transport repaired shaft to USACE facility located at 3556 NW Front Ave. Portland, OR 97210.
06. Testing
Mag Particle test each shaft over the entire length prior to installation of new liners in the presence of COR/OEM Rep and ABS/USCG.
Liner TIR and hammer test post installation in presence of COR/OEM Rep and ABS/USCG.
Contractor shall perform spark test of fiber glassed areas in the presence of COR/OEM Rep and
ABS/USCG.
OEM Rep shall witness final dimensions and visually inspect shaft prior to preservation
07. Inspection / Documentation
Provide CFR for any discrepancies found during NDT testing or visual inspection.
Provide CFR of TIR of existing liners and hub flanges.
Provide CFR of TIR of new liners and hub flanges.
On satisfactory completion provide three (3) service / repair reports to the COE Representative.
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