High velocity oxy-fuel (HVOF) Thermal Spray Lift Fan Shaft repairs for Landing Craft Air Cushion (LCAC)

STATEMENT OF WORK High velocity oxy-fuel (HVOF) Thermal Spray Lift Fan Shaft repairs for Landing Craft Air Cushion (LCAC). Reference: T9074-AA-GIB-010/1687, THERMAL SPRAY PROCESSES FOR NAVAL SHIP MACHINERY APPLICATIONS. GENERAL 1. Scope of work. Shall provide all personnel, supervision, equipment, tools, parts, materials, and services necessary to perform HVOF or other thermal spray repairs to Landing Craft Air Cushion (LCAC) 19 lift fan shafts designated by Assault Craft Unit Five (ACU-5), P.O BOX 555161, CAMP PENDLETON, CA 92055. Shall apply thermal spray on 19 lift fan shafts designated by ACU-5 in accordance with T9074-AA-GIB- 010/1687 (Reference (1)). 2. PERSONNEL. All personnel shall possess the skills, knowledge, and training to perform satisfactorily the services required with T9074-AA-GIB-010/1687. 3. CERTIFICATION. The facility and thermal spray operators shall be NAVSEA certified to perform the HVOF thermal spray in accordance with T9074-AA-GIB-010/1687. Required Services 1. STATEMENT OF WORK. a. LCAC LIFT FAN SHAFTS. Required services to be performed on 19 lift fan shafts (part number 5749555-015 Shaft Assembly, NAVSEA Drawing No. 53711-248- 5749555 Rev H) supplied by ACU-5 shall be as follows 1. BEARING AND SEAL AREAS a. PREMACHINING. Machine electro less nickel plating and damaged areas from bearing area (datum -a-, 4.7427/4.7244” dia.) and seal areas (the 5.378/5.372” diameter area and the 4.438+/-.003” dia. area) to remove in preparation for HVOF thermal spray coating. b. SURFACE PREPARATIONS. Clean and prepare the surfaces to be HVOF coated in accordance with T9074-AA-GIB-010/1687 and the facilities NAVSEA approved process instruction. c. COATING. Coat the bearing and seal areas with HVOF thermal sprayed tungsten carbide to a thickness required to finish areas to final print. If the machined area removed in step, (a) is greater than 0.020” thick, use a -- 1 of 4 -- compatible stainless steel metal alloy or Inconel as a base metal buildup followed by the tungsten carbide coating. d. FINISH MACHINING. Machine and/or grind the coated areas to original print dimensions and surface finish. 2. THREAD REPAIRS. If a full build up is required / desired by ACU-5 then use the following: a. If ACU-5 determines that threaded shaft surfaces in the areas of the bearing locknut or the hub nut are damaged beyond local repair capabilities, the facility shall machine off damaged threads, weld build up the area of the damaged threads in accordance with the welding procedure approved by the Naval Sea Systems Command (NAVSEA) and coastal system center code A41, LCAC In-Service Engineering Agent (ISEA), and recut new threads to original print dimensions. b. If repairs both to the threaded areas and to the bearing and seal areas are required on the same lift fan shaft, the thread repairs shall be accomplished first and then the coating of the bearing and seal areas shall be accomplished, so that the bearing seal area coating will not be affected adversely by the heat involved with the weld buildup of the thread area(s). c. If it is determined that thread repairs are required to a lift fan shaft that previously has had HVOF coating repairs made to the bearing and seal areas, the bearing and seal areas shall be recoated and finished after the thread repairs are accomplished, since the heat involved with the weld buildup of the threaded areas will destroy the integrity of the HVOF coating previously applied to the bearing and seal areas. d. Other LCAC Components. If other items require repair, Naval Surface Warfare Center Panama City Division (NSWC-PCD), Code E32, LCAC In- Service Engineering Agent (ISEA) shall be advised/consulted before any work is started. The statement of work for thermal spray repairs on other LCAC components designated by ACU-5 shall be included in the individual delivery orders directing repairs. When requested by the designated point of contact at ACU-5, the facility shall submit a written quotation for these repairs detailing the work proposed and the price for accomplishment. 2. SALVAGE PARTS. If the repairs ordered require the replacement of parts, the parts replaced shall be tagged and returned to the designated point of contact at ACU-5. The tag shall annotate the part number, nomenclature, and equipment from which it was removed. 3. SHIPPING/FREIGHT. The FOB point is the contractor’s facility. -- 2 of 4 -- LOCAL SHIPPING: a. For repair of components provided, ACU-5 shall arrange for delivery to and pick up from the facility by local truck. LONG DISTANCE SHIPPING: b. For repair of components provided, ACU-5 shall ship components to be repaired to the contractor’s facility at no expense to the contractor. Upon notification of the administrative contracting officer by the contractor, the government shall arrange, manage, and finance the return of repaired components to ACU-5 at the following “ship to” address: Supply Officer, ACU-5 Building 31916 Camp Pendleton, CA 92055 4. PACKAGING. a. For repair of components provided by ACU-5, the contractor shall protect repaired surfaces with protective packaging. Additionally, if a repaired component is too heavy to be handled manually by two persons, the contractor shall strap the protected repaired component to a pallet or shipping container for handling by forklift. 5. INSPECTION AND ACCEPTANCE. a. The contractor shall confirm receipt of components for repair by signing a copy of the incoming delivery documentation and returning the signed receipt copy to ACU-5. If shipment damage is noted, the contractor shall report the damage to ACU-5, including photographs showing the damage. b. Inspection and acceptance of repaired components shall be performed by ACU-5. 6. SHIPPER/PACKING SLIPS. ACU-5 Supply Department representative will prepare shipping/packing slips to accompany for the SHIPMENT and RETURN of all components to ACU-5. The shipper/packing slips shall reference the contract number and the delivery…