Lesson 1Drivetrain—generator: insulation resistance (megger) testing, bearing temperature, vibration, electrical output checksExplains generator drivetrain checks, focusing on insulation resistance testing, bearing temperature and vibration trends, electrical output quality, and acceptance criteria that indicate when cleaning, tightening, or component replacement is required.
Insulation resistance (megger) test procedureGenerator bearing temperature limitsVibration measurement points and alarmsVoltage, current, and power quality checksInterpreting generator test resultsLesson 2Hydraulic systems: reservoir level, filter inspection/replacement, pressure tests, leak detection and hydraulic oil analysisExplains hydraulic system inspections, including reservoir level checks, filter inspection or replacement, pressure tests, leak detection, hose condition, and hydraulic oil sampling for cleanliness, water content, and degradation.
Reservoir level and sight glass inspectionFilter differential pressure and changeoutSystem pressure and relief valve testsHose, fitting, and cylinder leak checksHydraulic oil sampling and lab analysisLesson 3Cooling systems: radiator/heat exchanger cleaning, coolant level and quality checks, fan and thermostat operation testsCovers cooling system inspection routines, including radiator and heat exchanger cleaning, coolant level and quality checks, hose and clamp integrity, and verification of fan, pump, and thermostat operation under typical turbine load conditions.
Radiator and heat exchanger cleaning stepsCoolant level, quality, and freeze point checksFan, pump, and thermostat functional testsHose, clamp, and fitting leak inspectionRecording cooling system measurementsLesson 4Yaw system: yaw drive gear and brake inspection, encoder and limit switch checks, lubrication and torque checksDetails yaw system maintenance, including yaw drive and brake inspection, gear and bearing lubrication, encoder and limit switch checks, cable loop condition, and torque verification of key fasteners in the yaw assembly.
Yaw gear, pinion, and bearing inspectionYaw brake pad, disc, and clearance checksLubrication of yaw gears and bearingsEncoder and limit switch functional testsTorque checks on yaw fastenersLesson 5Rotor and blades: visual blade surface inspection, leading/trailing edge checks, lightning protection continuity, bolt torque at hubCovers rotor and blade inspections, including close visual checks of surfaces, leading and trailing edges, lightning protection continuity, bolt torque at the hub, and documentation of defects with photos and severity ratings.
Blade surface and laminate visual checksLeading and trailing edge damage checksLightning protection continuity testingHub and blade bolt torque verificationBlade defect classification and reportingLesson 6Drivetrain—main bearing: axial/radial play checks, lubrication sampling, temperature and vibration monitoringDetails main bearing inspection, including axial and radial play measurements, lubrication sampling and analysis, temperature and vibration monitoring, and how to correlate findings with alignment, load conditions, and early damage indicators.
Axial and radial play measurement methodsGrease sampling and contamination checksMain bearing temperature monitoringVibration signatures of bearing defectsCriteria for main bearing maintenanceLesson 7Nacelle interior general: structural inspections, housekeeping, vibration sensor mounts, cable routing and tiesDescribes nacelle interior checks, including structural inspection of frames and covers, housekeeping, cable routing and tie integrity, vibration sensor mounting, and verification of lighting, fire detection, and safety equipment.
Main frame and cover structural inspectionHousekeeping, spills, and debris removalCable routing, clamping, and strain reliefVibration sensor mount and wiring checksNacelle lighting and safety devicesLesson 8Electrical and control cabinets: visual inspection, busbar torque checks, contactor and relay function tests, SCADA alarms review, firmware/configuration verificationDescribes inspection of electrical and control cabinets, including visual checks, torque verification of busbars and terminals, contactor and relay testing, SCADA alarm review, and firmware or configuration verification against current standards.
Cabinet cleanliness and visual damage checksBusbar and terminal torque verificationContactor, relay, and breaker function testsSCADA alarms and event log reviewFirmware and configuration validationLesson 9Braking system: brake pad wear measurement, brake hydraulic/pneumatic pressure checks, functional brake testCovers braking system maintenance, including pad wear measurement, hydraulic or pneumatic pressure checks, accumulator condition, functional brake tests, and documentation of stopping distance and response time against turbine limits.
Brake pad wear and rotor surface checksHydraulic or pneumatic pressure testsAccumulator pre‑charge and leak checksEmergency and service brake function testsRecording brake performance resultsLesson 10Tower and access: visual inspection points, corrosion checks, bolts and torque verification, door/lock and grounding checksAddresses tower and access inspections, including visual checks for deformation, corrosion, coating damage, bolt and flange torque verification, ladder and platform integrity, door and lock function, and grounding continuity tests.
Tower shell and weld visual inspectionCorrosion, coating, and touch‑up actionsFlange bolt torque and tension checksLadders, platforms, and fall arrest checksGrounding and bonding continuity testsLesson 11Pitch system: actuator operation tests, hydraulic/electrical checks, backlash and torque checks, position sensor verificationExplains pitch system maintenance, including actuator operation tests, hydraulic or electrical checks, backlash and torque verification, position sensor calibration, and evaluation of alarms or fault histories in the controller.
Pitch actuator stroke and speed testsHydraulic or electrical supply checksBacklash, play, and torque verificationPitch position sensor calibration checksPitch fault and alarm history reviewLesson 12Drivetrain—gearbox: oil level and quality tests (viscosity, particle count), leak detection, gear tooth inspection and vibration analysisFocuses on gearbox health checks, including oil level and quality tests, leak detection, breather and filter inspection, gear tooth visual inspection, and vibration analysis to detect wear, misalignment, and early stage pitting or scuffing.
Oil level checks and top‑up proceduresOil sampling, viscosity, and particle countsLeak paths, seals, and breather inspectionGear tooth surface and contact pattern checksGearbox vibration trend evaluation
