Carlos M L Contreras

• Electro-mechanical assemblies for Columbia and Virginia class nuclear naval attack submarines. These are electrical high voltage power source cabinets installed with a different variety of drawer size subassemblies to power a submarine.

• Performing subassemblies with inner chassis AWG wiring/harness connections that include crimping terminals, terminal blocks, soldering connections, resistors, transformers, conformal printed circuit boards(PCB’s), LCP assemblies, sensors, fans, mechanical slides and composite components.

• The variety of electrical drawers are then installed via forklifts into an aluminum size cabinet including electrical and mechanical components like PCB boards, power planes connectors, heat exchangers, photo/temperature sensors, fans, composite power planes, electrical pre-assembled panels, fiber optics, and wire harness that route from top to bottom for one giant assembly. Safety hard-hats are used during crane moving and installation of subassemblies.

•Hardware orientation, accurate current revision, part numbers, serial numbers, and cage code. Recordings and signature of assembler are written down on a configuration sheet.

•Calibrated and non-calibrated hand tools both manual and pneumatic such as pliers, screwdrivers, hammers, open and socket wrenches, extended power drills, heli-coil installation, hand and wrench torques per work order instructions are used.

• Performing mechanical and electrical rework on previous assemblies from chassis, panels, wire harnesses, terminals, connectors, thread tapping, countersink tapping, inductors, transformers, chemical bonding, and paint touch up.

• Assemblies are followed by Engineering BOM, Schematic drawings, Wire diagrams, Operational Method Sheet (OMS) and Manufacturing Process Specifications (PS) in accordance with work order instructions.

• Ability to communicate with team, leaderships, and engineers. Changed orders, disposition and quality in importance to safe manufactured products.

•Able to move or manipulate heavy parts and assemblies ranging to 50+ lbs in a safe manner/as a team.

•Accuracy of time charging on job performed and complete assigned tasks within budget hours.

• Electro-Mechanical assembly for F18 Super-Hornet and CH53 external fuel tanks (EFT). Including assembly for Landing gear and tail hook assembly.
• Inner assembly for external fuel tanks ranging from a diameter of 36’x 22-25’ included electrical and mechanical gaskets, fabricated brackets, tube springs, valves such as pre-check, pilot shut-off and electrical fluid sensor valves for refueling. Pressure gage testing for air and fuel leakage.
• Landing gear assembly included hydraulic actuators, wheel installation and tail hook assembly with schematic procedures.
• Bench testing and data recording for a variety of acceptance testing with fixtures and rigs. Testing included strength and stiffness using strain gauges for stress and deforming monitoring. Pressure impulse and functional test for operational cycles like extensions, retraction, and locking/unlocking. Testing data is recorded on a configuration and attached during following the operations.
• Fabrication procedures for F18 & CH53 inner brackets was drilling, applying countersink, installation of nut-plates, rivets, and helicoil installation.
• Sheet metal helping aid for process of forming cone shape and body for external fuel tanks. The process begins from sheet metal, press brake for dimension/angle, then shear cutting and after forming. Weld prep for cone head and body etched with scotch pads and grinding.
• Blueprint schematic reading, PEM and Mil spec hardware provided by engineering were in accordance to specifications.
• Operations and configurations are tracked when logged into by worker, no signature or stamp was used during these individual procedures.

• Fuel and motion control valves for air-to-air refueling systems. Assemblies ranged from high to low control valves including bench testing. Testing procedures were red fluid dye pressurized by pump gages and valves for testing. Data must be written and signed by technician during and after testing.
• Calibrated measuring instruments included pressure gages, feeler gauges and calipers for air probes, flow meters, boom nozzles, and MA2-MA4 nozzles are applied during building procedures and testing.
• Teardown and rebuilding components were also part of rework procedures. A high quality of chemical mixtures were included for rework wet installations PS472, base component, curing/activator solution, chem-fill, hydraulic lube and epoxy adhesives.