CGC HOLLYHOCK REPAIR AND CLEAN #2 GENERATOR

This is a combined synopsis/solicitation for commercial items prepared in accordance with the format in FAR Subpart 12.6 as supplemented with additional information included in this notice. This announcement constitutes the only solicitation; quotations are being requested and a written solicitation will not be issued. This Request for Quotations incorporates provisions and clauses in effect through Federal Acquisition Circular 2005-84 dated Nov 1, 2015. All responsible sources may submit proposals that will be considered by the agency. The contract will be awarded on a firm-fixed-price basis using simplified acquisition procedures in accordance with FAR Part 13.5. Past performance will be considered in the selection of the awarded vendor. PERIOD OF PERFORMANCE: 21DEC2020 - START DATE The United States Coast Guard Surface Force Logistics Center has a requirement for the following: 31120_RAD_0919_FLT REC_31120_FLT_225 WLB B Class(1111) WORK ITEM 1: Ship Service Diesel Generator, Clean & Inspect 1. SCOPE 1.1 Intent. This work item describes the requirements for the Contractor to inspect, recondition, and test in place the No. 1 Ship Service Diesel Generator (SSDG). 1.2 Government-furnished property. None. 2. REFERENCES COAST GUARD DRAWINGS Coast Guard Drawing 225B-WLB 201-2, Rev C, Access Removal Routes COAST GUARD PUBLICATIONS Coast Guard Technical Publication (TP) 3537B, Manufacturer's Instruction Book - SWBS Group(s) 310 Surface Forces Logistics Center Standard Specification (SFLC Std Spec) 0450, 2018, Electrical Power for Contractor's Tools & Equipment Surface Forces Logistics Center Standard Specification (SFLC Std Spec) 3100, 2018, Inspect, Test and Recondition AC Synchronous Machines In-Place OTHER REFERENCES American National Standards Institute (ANSI/EASA) AR100, 2015, Recommended Practice for the Repair of Rotating Electrical Apparatus 3. REQUIREMENTS 3.1 General. The Contractor shall inspect, recondition, and test in place the Ship Service Diesel Generator (SSDG) in accordance with SFLC Std Spec 3100, using ANSI/EASA AR100-2015 instead of AR100-2010 as referenced. Generator data is shown in Table 1 below. TABLE 1 - GENERATOR DATA QUANTITY CHARACTERISTICS MANUFACTURER LOCATION 1 450 kW, 450 VAC, 60 Hz, 3 phase, 1200 RPM, 0.8 power factor Caterpillar Engine Room 3.1.1 CIR. The Contractor shall submit a CIR for the inspections listed in the following paragraph(s): None. 3.1.2 Tech Rep. The Contractor shall provide the services of a Qualified Technical Representative who is familiar with AC synchronous machine repair to accomplish the following on site: - Advise on manufacturer's proprietary system information. - Assist with the removal, installation, repair, and overhaul in accordance with ANSI/EASA AR100. - Ensure compliance with manufacturer's procedures and ANSI/EASA AR100 standards during system disassembly, inspection, and reassembly as applicable. - Witness the performance of all tests, inspections, and cleaning operations performed under this specification. 3.1.2.1 Ensure the Tech Rep has experience with the system/equipment stated above and demonstrated on their r'sum and is employed by a shop that is a member of the Electrical Apparatus Service Association (EASA). 3.1.2.2 Submit the name and r'sum of the Tech Rep to the COR at the Arrival Conference. 3.1.3 Protective measures. The Contractor shall furnish and install all protective coverings to seal off and protect all non-affected vessel's components, equipment, and spaces in the vicinity of the work area against contamination during the performance of work. Upon completion of work, remove all installed protective measures, inspect for the presence of contamination, and return all contaminated equipment, components, and spaces to original condition of cleanliness. 3.1.4 Interferences. The Contractor shall handle all interferences in accordance with SFLC Std Spec 0000, paragraph 3.3.5 (Interferences). 3.2 Requirements. The Contractor shall accomplish all work detailed in SFLC Std Spec 3100, with the exception of the following (unless a Change Request has been authorized and released by the KO): 3.2.1 Bearing wear. The Contractor shall not measure and record bearing wear in accordance with SFLC Std Spec 3100, Section 3.2.3.6, Bearing wear. 3.2.2 Collector rings. The Contractor shall not measure and record collector ring wear and concentricity in accordance with SFLC Std Spec 3100, Section 3.2.3.7, Collector ring wear and concentricity. 3.2.3 Rotor extraction. The Contractor shall not remove the rotor for cleaning within the compartment in accordance with SFLC Std Spec 3100, Section 3.2.3.8, Rotor removal. 3.2.4 Installed prime mover. The Contractor shall not use the installed prime mover (e.g., engine or barring gear) to spin the rotor while circulating current through the field windings during drying operations. 3.3 Insulation treatment. The Contractor shall touch up thin and bare spots on the cleaned windings with an air drying varnish in accordance with SFLC Std Spec 3100, 3.3.2, Insulation treatment. 3.4 Utility services. The Contractor's use of Coast Guard utility services, both afloat and ashore, is restricted as follows for performance of this work item: 3.4.1 Electrical power. The Contractor's use of electrical power for temporary tools and equipment used to accomplish this work item shall comply with SFLC Std Spec 0450. When no other power source options are practicable, such loads may be energized from a temporary generator located afloat or ashore in accordance with Appendix E of SFLC Std Spec 0450. 3.4.1.1 Dockside equipment. Power solely for dockside tools and equipment may be taken from the dockside electrical power distribution system in accordance with Appendix A (preferred) of SFLC Std Spec 0450 or from the shipboard electrical power distribution system in accordance with Appendix D of SFLC Std Spec 0450. 3.4.1.2 Shipboard equipment. Power solely for shipboard tools and equipment may be taken from the ship service electrical distribution system in accordance with Appendix B (preferred) of SFLC Std Spec 0450 or from the dockside electrical power distribution system in accordance with Appendix C of SFLC Std Spec 0450. 3.4.2 Potable water. The Contractor's use of hot and cold potable water may be obtained from shipboard systems. Cold potable water may be obtained from dockside connections. 3.4.3 Compressed air. The Contractor's use of compressed air for tools and generator hand cleaning may be taken from the ship service air system. Air that is to be blown into a generator shall be filtered for particulate, water, and oil prior to discharge. 3.5 External heating. The Contractor shall apply external heat following cleaning to dry out the windings. The heater power rating will vary with the amount of equipment to be dried, degree of enclosure, and amount of ventilation. The estimate in Table 2 below assumes that no heat is lost by radiation or by forced or natural convection; consequently, the input power rating should be increased by a few kilowatts to compensate for heat losses. 3.5.1 The Contractor shall limit heat input so that winding temperatures do not increase more than 20'F per hour. 3.5.2 The Contractor shall not exceed a winding temperature of 167'F. TABLE 2 - EXTERNAL HEATING DATA MACHINE WEIGHT (LBS) HEATER POWER HEATUP RATE (F/H) TEMPERATURE RISE (F) DURATION (H) (KW) (BTU/H) 5,651 3.9 13,306 20 107 5.4 4. NOTES 4.1 Conditional performance. This work item is performed only when warranted by the condition of the generator windings. The mere presence of dust is not sufficient justification to perform this work item. 4.1.1 Note that there is some risk that solutions used during the cleaning process may penetrate through microscopic cracks in the varnish, carrying contaminants deeper into the windings through capillary action. Once so embedded, such contamination cannot be removed and insulation resistance could actually be degraded such that a costly and time consuming rewind would be necessary. 4.1.2 Cleaning is normally only warranted when the windings have been wetted by sea water or insulation resistance trends suggest that the machine will fall below the minimum acceptable insulation resistance for operation before the next depot level availability. 4.2 Shop cleaning. This generator is (rotor only) removable from the vessel without making a hull cut. See CG Drawing 225B-WLB 201-2 for rigging path to weather including any bolted (BERP) or welded (WERP) equipment removal plates that must be removed. For machines that can be removed from the vessel through existing accesses or openings created by other work items, it is generally quicker and more cost effective to offload the affected generator from the vessel and perform the work ashore in a generator repair shop. Such tasking should be performed under - Ship Service Diesel Generator, Overhaul and not this work item. -PART 2 31121_RAD_1020_FLT REC_31120_FLT_225 WLB B Class(1111) WORK ITEM 1: No. 2 Ship Service Diesel Generator, Overhaul APM: Do not edit any part of the Work Item Title. 1. SCOPE 1.1 Intent. This work item describes the requirements for the Contractor to overhaul the No. 2 Ship Service Diesel Generator (SSDG) ashore in a suitable repair facility. 1.2 Government-furnished property. None. 2. REFERENCES COAST GUARD DRAWINGS Coast Guard Drawing 225B-WLB 201-2, Rev C, Access Removal Routes COAST GUARD PUBLICATIONS Coast Guard Technical Publication (TP) 3537B, Manufacturer's Instruction Book - SWBS Group(s) 310 Surface Forces Logistics Center Standard Specification (SFLC Std Spec) 3101, 2018, Overhaul AC Synchronous Machines OTHER REFERENCES American National Standards Institute (ANSI/EASA) AR100, 2015, Recommended Practice for the Repair of Rotating Electrical Apparatus 3. REQUIREMENTS 3.1 General. The Contractor shall Overhaul the No. 2 Ship Service Diesel Generators ashore in a suitable repair facility in accordance with SFLC Std Spec 3101, using ANSI/EASA AR100-2015 instead of AR100-2010 as referenced. The recommended rigging path, when known, is shown in the drawing referenced above. Generator data is shown in Table 1 below. 3.1.1 CIR. None. 3.1.2 Tech Rep. The Contractor shall provide the services of a Qualified Technical Representative who is familiar with AC synchronous machine repair to accomplish the following: - Advise on manufacturer's proprietary system information. - Assist with the removal, installation, repair, and overhaul in accordance with ANSI/EASA AR100. - Ensure compliance with manufacturer's procedures and ANSI/EASA AR100 standards during system disassembly, inspection, and reassembly as applicable. - Witness the performance of all tests, inspections, and cleaning operations performed under this specification. 3.1.2.1 Ensure the Tech Rep has experience with the system/equipment stated above and demonstrated on their r'sum and is employed by a shop that is a member of the Electrical Apparatus Service Association (EASA). 3.1.2.2 Submit the name and r'sum of the Tech Rep to the COR at the Arrival Conference. 3.1.3 Protective measures. The Contractor shall furnish and install all protective coverings to seal off and protect all non-affected vessel's components, equipment, and spaces near the work area against contamination during the performance of work. Upon completion of work, the Contractor shall remove all installed protective measures, inspect for the presence of contamination, and return all contaminated equipment, components, and spaces to original condition of cleanliness. 3.1.4 Interferences. The Contractor shall 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: - Air ducting - Removable handrails - QAWTDs along the removal route - Electrical wiring 3.2 Removal. The Contractor shall remove the No. 2 generator assembly to be worked ashore in accordance with Section A.2.1 of Appendix A of SFLC Std Spec 3101. See CG Drawing 225B-WLB 201-2 for rigging path to weather including any bolted (BERP) or welded (WERP) equipment removal plates that must be removed. 3.2.1 Coast Guard personnel shall use the shipboard crane to hoist and transit the No. 2 generator assembly through the designated access route. 3.2.2 Operation of Coast Guard equipment and machinery shall be performed by shipboard personnel. 3.2.3 Disassembly of the No. 2 Generator may be necessary in order to remove the machinery without a hull cut. 3.3 Initial inspection. The Contractor shall perform the initial inspection and tests of section 3.3 of SFLC Std Spec 3101. Submit a CFR. 3.4 Shop work. The Contractor shall transfer the generator to an ANSI certified subcontractor to perform the work in accordance with appendices of SFLC Std Spec 3101 as follows: 3.4.1 Reconditioning. The Subcontractor shall recondition the No. 2 generator per Appendix B. Insulation treatment shall be of temperature Class F or better and not less than the temperature class of the existing insulation system. 3.4.2 Rewinding. Rewinding per Appendix C is not expected to be necessary, but may become the subject of a change order if reconditioning efforts are unsuccessful. Varnish may be applied to new windings using the vacuum pressure impregnation (VPI) method. Insulation treatment shall be of temperature Class F or better and not less than the temperature class of the existing insulation system. 3.4.3 Miscellaneous repairs. The Contractor shall perform, or otherwise delegate to the ANSI certified subcontractor, the following miscellaneous repairs in accordance with the applicable Appendix D section listed in Table 2 of SFLC Std Spec 3101: - D2.3 Bearing housing - D2.4 Bearings - D2.5 Journals - D2.7 Leads 3.5 Balancing. The Subontractor shall dynamically balance each rotor assembly per Section 3.4.4 of SFLC Std Spec 3101. Submit a CFR. 3.6 Reassembly. The Subontractor shall reassemble each machine per Section 3.4.5 of SFLC Std Spec 3101. For exciter armature (rotor - L2) bolts on Caterpillar SR4 generators, apply thread locking compound per Caterpillar service manual Form No. SENR3985, contained within the generator technical publication, and tighten 5/16 inch bolts to 26 lb-ft and 3/8 inch bolts to 41 lb-ft. 3.7 Shop acceptance testing. The Subontractor shall accomplish the shop acceptance tests of Section 3.5 of SFLC Std Spec 3101. Submit a CFR. 3.8 Final assembly. The Subontractor shall complete reassembly work per Section 3.6 of SFLC Std Spec 3101. 3.9 Packaging. The Subontractor shall package each reassembled machine per Section 3.7 of SFLC Std Spec 3101. 3.10 Reinstallation. The Contractor shall reinstall the generators or assemblies that were worked ashore in accordance with Section A.2.2 of Appendix A of SFLC Std Spec 3101. 3.11 Final acceptance testing. The Contractor shall accomplish the final acceptance tests of Section A.2.3 of Appendix A of SFLC Std Spec 3101. Submit a CFR. TABLE 1 - GENERATOR DATA QUANTITY CHARACTERISTICS MANUFACTURER LOCATION 1 450 kW, 450 VAC, 60 Hz, 3 phase, 1200 RPM, 0.8 power factor Caterpillar Engine Room 4. NOTES 4.1 Conditional performance. This work item is performed only when warranted by the condition of the generator windings. Rewinding would typically be performed no more than once during the lifetime of the vessel. 4.1.1 This generator is (rotor only) removable from the vessel without making a hull cut. 4.1.2 For large machines, extensive interference removal and a hull cut may be necessary to remove a generator. In some cases it may be simpler and more cost effective to perform repairs afloat. A competent repair shop, experienced with large generators, should be consulted early in the planning process to help with such an assessment. 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