Statement of Work Fairlead Beams.pdf

Statement of Work Fairlead Beams

General requirements

1. Performing modifications to the Fairlead Beam (FLB) in accordance with drawings, procedures, and material specifications. Reference PDF files titles “Fairlead Beam Upgrade Fabrication Drawings”. Only certified welders may perform welding on the Beams.

Certificates must be provided with quotes. Follow American Welding Society D1.1, table 3.1 for welding requirements on ASTM A36 steel. Minimum yield strength 36Ksi, minimum tensile strength 58Ksi.

2. Use ONLY Sherwin Williams Zinc Clad IV. For Zinc Clad IV primed surfaces, Paint standard for steels will be one coat of Zinc clad IV (3.0-5.0 mils dry film thickness) followed by two coats of Sherwin Williams Acrolon 218 HS polyurethane topcoat (3.0-6.0 mils dry film thickness). The topcoat color will duplicate the original dark green color. The vendor shall follow the manufacturer’s recommendations for surface preparation and coating application.

Note: For painting purposes the Fairlead Beams are approximately 15ft x 3ft x 1ft.

3. Assuring the quality of work being performed on the FLB (first article inspection) is acceptable, when the first FLB is assembled, prior to painting, CETSC should be contacted and scheduled for an inspection to assure contract compliance. If accepted, modification on the remaining FLB’s can continue. If vendor desires, CETSC will consider a second inspection to observe a finished painted product to acknowledge acceptable quality workmanship.

Anticipated Work Sequence

1. Degrease and power wash units as necessary to prepare for media blasting, welding, & painting.

2. Each existing Fairlead beam will come with 4 lifting rings. The lifting rings will need to be removed and beam surface ground smooth. The lifting rings shall be re-installed at similar location on new top plate, by attaching with the newly fabricated bent plates (as indicated in Fig. 5-17). Bent plates sizing should replicate existing.

3. Media blasting Fairlead Beams (FLB) of all paint coating down to the bare metal. Please note that some of the existing FLB’s paint may contain lead. The intent is to blast all areas down to the bare metal so a good bond is obtained between the metal and coatings and all surfaces coating protects the metal from the outdoor environment that they will be exposed to. There are areas that have limited accessibility, that getting down to bare metal and providing paint coverage is near impossible. Doing the best you can is all that will be expected in these confined areas. The top surfaces of the existing FLB that will be receiving the top plate cover does not require media blasting and can remain as it.

Figure 1 shows 2 beams that are typical of disassembled configuration, which will be sent for modifications.

Figure 1 - Disassembled Fairlead Beams

Additional accessories are being sent for each beam requiring media blasting, painting and coating. They include the following:

Note: Retainer cover plate and main fairlead beam are mated and require staying together.

Items will be marked with identical numbers by CETSC personnel.

• Retainer cover plate as shown in Figures 2.

Figure 2 - Retainer Cover Plate

• Brush holders and Retainer Ring shown in Figure 3.

Figure 3 - Brush Holder and Retainer Ring

• End Roller Housing shown in Figures 4-6.

Figure 4 - End Roller Housing

Figure 5 - End Roller Housing

Figure 6 - End Roller Housing

4. Fabrication of top plate as shown in Fig 5-20a thru 5-20c.

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Figure 5-20b: FLB Top Plate Upgrade Drawings

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Figure 5-20c: FLB Top Plate Upgrade Drawings

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5. Drill 28 each 0.81 inch holes in new top plate using Fig. 5-20b.

6. Drill 28 correlating holes in original fairlead beams to allow mounting of plate to original fairlead beam using nut, washers and bolt.

7. Drill 10 each 2.00 inch holes in new top plate using Fig. 5-20b.

8. Drill 10 correlating holes in original fairlead beam to allow access to fairlead beam mounting nuts.

9. Drill 4 each 0.16 inch holes using Fig. 5-20a to allow installing of serial plate. (Installed by ANG personnel)

10. Hand hole covers as shown in Figure 5-19.

11. Side gusset plate shown in figure 5-21.

Note: Plate B is welded around its perimeter to Plate A

12. Assemble top plate, side gussets and hand holds by bolting and welding in accordance with Figure 5-17 (shown earlier). Note that the top of existing beam and bottom of the new top plate do not require painting prior to assembly.

13. Contact CETSC for First Article Inspection.

14. Upon satisfactory inspection, prime and paint with topcoat.

Figure 7 is attached as a visual image for reference showing a completed product. Note that the completed product image includes work which would not be required of this contract

Figure 7 - Completed Product