SOW Centerline And Carriage Winch Consolidated Spec.docx

Statement of Work for an OEM authorized / licensed Tech Rep for the Centerline and Carriage Winches Control System (Rockwell Automation)

58302_RTK_0423_418

Stern Boat Launch and Recovery, Level II

1. SCOPE

1.1 Intent. This work item describes the requirements for the Contractor to perform routine maintenance and preservation on Stern Boat Launch and Recovery System.

1.2 Government-furnished property.

PN: P2-965-0024

PN: B2-066-0056

PN: 81-E-0628

PN: 61-E-16

PN: B2-033-0026

NSN: 5360-01-598-3504

NSN: 3950-01-598-3240

*Government-loaned property, which must be returned to the vessel upon completion of the availability.

**New or refurbished equipment that the Government may provide for installation in place of existing equipment.

***Government-furnished property, which is to be supplied by either the vessel or the C4IT Service Center.

2. REFERENCES

COAST GUARD DRAWINGS

Coast Guard Drawing 750-WMSL-583-004, Rev K, Stern Launch & Recovery Arrangement & Details (ASC583004) Coast Guard Drawing FL-1702-11, Rev -, Inspection Of Sheaves

COAST GUARD PUBLICATIONS

Coast Guard Technical Publication (TP) 7809, SWBS 583, Apr 2021, Boat Retrieval Equipment – Boat Hoist, Centerline & Carriage Winches Surface Forces Logistics Center Standard Specification 0000 (SFLC Std Spec 0000), 2022, General Requirements Surface Forces Logistics Center Standard Specification 0740 (SFLC Std Spec 0740), 2022, Welding and Allied Processes Surface Forces Logistics Center Standard Specification 3020 (SFLC Std Spec 3020), 2022, Overhaul AC Electrical Motors Surface Forces Logistics Center Standard Specification 3041 (SFLC Std Spec 3041), 2022, Shipboard Electrical Cable Test Surface Forces Logistics Center Standard Specification 3042 (SFLC Std Spec 3042), 2022, Shipboard Electrical Cable Removal, Relocation, Splice, Repair, and Installation Surface Forces Logistics Center Standard Specification 5000 (SFLC Std Spec 5000), 2022, Auxiliary Machine Systems Surface Forces Logistics Center Standard Specification 6310 (SFLC Std Spec 6310), 2022, Requirements for Preservation of Ship Structures

OTHER REFERENCES

The Society for Protective Coatings (SSPC) Surface Preparation Specification No. 1 (SSPC-SP 1), 2016, Solvent Cleaning The Society for Protective Coatings (SSPC) Surface Preparation Specification No. 11 (SSPC-SP 11), 2016, Bare Metal Power Tool Cleaning

3. REQUIREMENTS

3.1 General.

3.1.1 CIR.

None.

3.1.2 Tech Rep. The Contractor must provide the services of Tech Reps in accordance with the following subparagraphs.

3.1.2.1 The Contractor must provide the services of an OEM authorized / licensed Tech Rep for the Centerline and Carriage Winches (Superior–Lidgerwood–Mundy Corp.) to accomplish the following on site:

Provide manufacturer's proprietary information, software, and tools pertinent to the equipment/system Assist with proper repair methods, and ensure compliance with manufacturer's procedures and standards during disassembly, inspection, repair, modification, calibration, and reassembly of the equipment/system Observe initial testing to identify any major mechanical issues Adjust and set limits switches associated with the equipment Adjust wire rope lengths

3.1.2.2 The Contractor must provide the services of an OEM authorized / licensed Tech Rep for the Centerline and Carriage Winches Control System (Rockwell Automation) to accomplish the following on site:

· Provide manufacturer's proprietary system/ equipment information, software, and tools.

· Assist with and ensure compliance with manufacturer's procedures and standards during initial testing, disassembly, inspection, repair, modification, calibration, reassembly, and final testing of the equipment/system.

3.1.2.3 Ensure the Tech Reps are OEM Certified Representatives for the systems/equipment stated above and demonstrated on their résumés.

3.1.3 Protective measures. The Contractor must furnish and install all protective measures in accordance with SFLC Std Spec 0000, paragraph 3.3.3 (Vessel component, space, and equipment protection).

3.1.4 Interferences. The Contractor must handle all interferences in accordance with SFLC Std Spec 0000, paragraph 3.3.5 (Interferences). Known interferences include, but are not limited to the following:

· Piping

· Electrical Cables

· Brake Guards

· Boat Capture Net

3.2 Electrical requirements. The Contractor must accomplish all electrical work in accordance with SFLC Std Spec 3042, and test cables in accordance with SFLC Std Spec 3041.

NOTE

Coast Guard personnel will operate all shipboard machinery and equipment.

3.3 Operational test, initial. Prior to commencement of work, the Contractor must witness Coast Guard personnel perform an initial operational test of all items or shipboard devices to be disturbed, used, repaired, or altered, to demonstrate existing operational condition, in both automatic and manual modes of operation. Submit a CFR.

3.3.1 The Contractor with Tech Rep support in the presence of the Coast Guard Inspector perform an operational test using the small boat on Stern Boat Launch and Recovery system and submit a CFR.

3.4 Electric motors. The Contractor must perform megger testing for the motors listed in Table 1 in accordance with SFLC Std Spec 3020. Ensure motor leads are disconnected from the control cabinet during megger testing. Submit a CFR detailing results of megger test and recommendations for any parts requiring repair or renewal.

TABLE 1 – LIST OF ELECTRIC MOTORS

Caution The PLC back-up battery should be disconnected when the PLC panel is disconnected to prevent draining the battery.

3.5 Control station. The Contractor must open, clean, and inspect the interior of each of the control stations. Perform inspections specified in accordance with Section 11 of Coast Guard TP 7809. Additionally, verify that cover gaskets are intact and sealing out water from internals, proper connection of all wires (i.e. not loose, disconnected, damaged, etc.), and all lights and switches are operational. Submit a CFR with a description of any deficiencies identified.

3.6 Centerline boat winch maintenance. The Contractor must perform the following tasks for the centerline boat winch. Submit a CFR with a description of any found discrepancies and recommendations for repairs.

3.6.1 Drain and inspect the gear box lubricating oil for any metal particles or other discrepancies and submit a CFR. Dispose of lubricating oil in accordance with all Federal, state, and local regulations.

3.6.2 Open the gearbox inspection covers and inspect the gearbox internals. Note any indications of damage to gearbox internals. Measure gear lash and play.

3.6.3 Disassemble and inspect the brake and clutch linkages, and service and inspect the brake and clutch actuators in accordance with SFLC Std Spec 5000. Renew material provided as GFP upon reassembly and renew all fasteners.

3.6.4 Refill the gearboxes with new gear oil (i.e. Mobil Gear SHC 220, ISO VG 220, 19.3 gallons). Renew any damaged hardware/fasteners and reinstall inspection cover with new gasket material.

3.6.5 Lubricate all components of the centerline winch in accordance with Section 9 of Coast Guard TP 7809.

3.7 Port and Starboard carriage winch assembly removal. The Contractor must record all existing installation of the Stern Launch and Recovery Arrangement as shown on the Coast Guard Drawing 750-WMSL-583-004 and submit a CFR.

3.7.1 The Contractor must remove Top and Bottom wire rope (i.e. Piece No.103 and 104 of Coast Guard Drawing 583-524-004) from Port and Starboard carriage winch assembly. Inspect each wire rope in accordance with SFLC Std Spec 5000Pressure lubricate the wire ropes and save for reinstallation. Submit a CFR.

3.7.2 With ropes removed, the Contractor must inspect each of the two (2) carriage winch sheaves for wear in accordance with Coast Guard Drawing FL-1702-11. Inspect the sheave bearings to ensure smooth operation. Submit a CFR with a description of the condition of the sheaves. Renew all sheave tensioner springs.

3.7.3 The Contractor must renew the springs and lock nuts for each carriage assembly.

3.7.4 Unbolt the Port and Starboard carriage winch skids from its foundation. Remove the entire port and starboard carriage winch assemblies and transport them to dock or shop for further work. Use new bolts and hardware for reinstallation.

3.7.5 Carriage winch recess preservation. The Contractor must perform preservation of both carriage winch recess. Include bulkhead surfaces, deck and foundation. Conduct preservation in accordance with SFLC Std Spec 6310.

3.7.6 Carriage winch inspection. The Contractor with Tech Rep support in the presence of the Coast Guard Inspector must perform inspection of the Port and Starboard carriage assembly and provide written report for recommended repair for full functional operation of the Port and Starboard carriage winch assembly. Submit a CFR.

3.8 Carriage winches maintenance (Port and Stbd). The Contractor must perform the following tasks for the Port and Stbd carriage winches. Submit a CFR with a description of any found discrepancies and recommendations for repairs.

3.8.1 Drain and inspect the gear box lubricating oil for any metal particles or other discrepancies and submit a CFR. Dispose of lubricating oil in accordance with all Federal, state, and local regulations.

3.8.2 Open the gearbox inspection covers and inspect the gearbox internals. Note any indications of damage to gearbox internals. Measure gear lash and play.

3.8.3 Disassemble and inspect the brake linkages, and service and inspect the brake actuators in accordance with SFLC Std Spec 5000. Renew material provided as GFP upon reassembly and renew all fasteners.

3.8.4 Refill the gearboxes with new gear oil (i.e. Mobil Gear SHC 220, ISO VG 220, 9.8 gallons per gearbox, 19.6 gallons total). Renew any damaged hardware/fasteners and reinstall inspection cover with new gasket material.

3.8.5 Lubricate all components of the carriage winch assemblies in accordance with Section 10 of Coast Guard TP 7809.

3.9 Carriage winch brake assembly. The Contractor must perform the following work in accordance with of CG Tech Pub 7348A/7809 (i.e. Drawing D2-413-0021). Install GFP parts with Tech Rep support in accordance with TP 7348A.

3.9.1 Disconnect and remove the brake band assembly on each of the carriage winches. Inspect the brake band. Scuff the brake band to remove any glazing. Submit a CFR.

3.9.2 Inspect the brake and clutch mechanism on each winch. Verify shim gap with proper stainless steel shims of various thickness. Submit a CFR.

3.9.3 Disassemble the brake actuator for each winch. See section 7.2 of CG Tech Pub 7348A. Clean and inspect all parts. Provide and install new roller bearings, thrust bearings, sealed bearing and new oil seals. Reassemble the brake actuator assembly. Verify actuator spring is set to designed tension. Lubricate all parts.

3.10 Clutch actuator. Inspect clutch actuator motor in accordance with TP 7348A and submit a CFR.

3.10.1 Carriage winch clutch linkage sub-assembly. Inspect all parts of the clutch linkage sub assembly and submit a CFR. Adjust the brake and clutch mechanisms on each winch.

3.11 Hoses. Renew hoses of the Carriage Winches.

3.12 Lubrication. Lubricate all other sections of the winch assemblies in accordance with TP 7348A.

3.13 Limit switches. Contractor shall renew and properly set all limit switches.

3.14 Control station. The Contractor must open and inspect the interior of each of the control stations. Verify that cover gaskets are intact and sealing out water from internals.

3.14.1 The Contractor with Tech Rep support must verify all electrical signals and commands to carriage winch assembly.

3.14.2 The Contractor with Tech Rep support must inspect, test and adjust the encoders of Centerline and Carriage Winch assembly. Submit a CFR.

3.15 Carriage winch assembly preservation. As each carriage winch assembly, including foundation skid and various other components are being inspected and repaired, power tool clean all weather exposed parts of the winch assembly to a tight paint film in accordance with SSPC SP-3. Solvent wipe components to remove traces of grease and salts. Paint with one (1) coat of epoxy primer, polysiloxane system, 5-6mils dft and one (1) top coat of polysiloxane 5-6 mils dft to match the existing color.

3.16 Carriage winch reinstallation. The contractor must perform the following work: Reinstall the carriage winches in their original locations aboard the cutter in accordance with Coast Guard Drawing 750-WMSL-583-004.

3.16.1 Wire rope reinstallation. After completion of other work on the port and starboard carriage winches, reinstall wire rope (i.e. Piece No.103 and 104 of Coast Guard Drawing 583-524-004) in each location on each of the two (2) carriage winches. Four (4) wire ropes are required. Follow guidance of CG Tech Pub 7348A/7809 and Coast Guard Drawing 750-WMSL-583-004 for wire rope installation.

3.16.2 Follow guidance in OEM manual Carriage Winch Wire Rope Lengths – B2-502-0009 ( Sheet 12 and 13) to determine each wire rope lengths

3.16.3 Follow guidance in OEM manual Carriage Winch Wire Rope Respooling – B2-502-0009 (i.e. Sheet 12 and 13) and Coast Guard Drawing 750-WMSL-583-004 when respooling the new wire ropes. The Contractor must reinstall the wire rope assembly in accordance with SFLC Std Spec 5000 (i.e. Appendix D, Paragraph D2.2).

3.16.4 Adjust the length of the wire ropes after respooling as described in CG Tech Pub 7348A/7809.

3.17 In presence of Coast Guard Inspector, the Contractor with Tech Rep support must perform test on carriage winches in accordance with submitted Test Plan. Submit a CFR.

NOTE

Coast Guard personnel will operate all shipboard machinery and equipment.

3.18 Square rail inspection. The Contractor must clean and inspect the Orkot sliding bearing pads on the square rail assemblies. Measure the clearances between the slider bearing pads and the carriage assembly steel pads around all sides of the square rail assemblies. The clearance must be 1/16” nominal for all sides. Ensure that the bearing material is in good condition and not excessively worn or damaged. Submit a CFR.

3.19 Pipe rail inspection. The Contractor must inspect the Orkot inserts for the pipe rail for any indications of uneven wear. Measure the clearance between the slide bearing material and pipe rail to ensure it is in accordance with Coast Guard Drawing 750-WMSL-583-004. Submit a CFR. Clean the pipe rails in accordance with SSPC SP-1 to remove all grit and dirt from the rails.

3.20 Alignment tolerance. The Contractor must measure the distance between each of the pipe rails and the square rails at several locations (measure to the rails, not to the Orkot) to measure the parallelism between the pipe and square rails. Verify that the pipe rail and square rail assemblies are parallel with 1/16 inch of each other as described on Sheet 18A of CG Drawing 750-WMSL-583-004. Submit a CFR with results.

3.21 Partial preservation. The Contractor must prepare and preserve up to 33% of the carriage assemblies, rail supporting structures, and square rail surfaces in accordance with Table 2. Power tool clean all affected surfaces to “bare metal” in accordance with SSPC-SP 11, in lieu of using abrasive blasting; and feather edges of existing intact coating to the prepared areas, in order to provide a smooth transition with the new paint. Conduct an SSPC SP-1 (solvent cleaning) on the structure prior to conducting surface preservation.

Table 2 – Preservation requirements

LEVEL

(Freeboard/Superstructure, Steel)

NOTE

Coast Guard personnel will operate all shipboard machinery and equipment.

3.22 Operational test, post repairs. After completion of work, the Contractor must thoroughly test, and demonstrate all items or shipboard devices that have been disturbed, used, repaired, altered, or installed to be in satisfactory operating condition, in both automatic and manual modes of operation. Submit a CFR.

3.22.1 In the presence of the Coast Guard Inspector, operate and test Stern Boat Launch and Recovery System. Demonstrate operation in automatic and manual mode.

3.22.2 Use the GFP small boat (i.e. CB-OTH Mark IV & LRI-II) to demonstrate operation of the carriage winch during testing. The small boat will be launched and recovered during testing.

3.23 Touch-up preservation. The Contractor must prepare and coat all new and disturbed surfaces to match existing adjacent surfaces in accordance with SFLC Std Spec 6310, (Touch-ups and minor coating repairs.)

4. NOTES

This section is not applicable to this work item.