Power Eng 2nd Class study materials
Power Eng 2nd Class study resources

Power Eng 2nd Class study plan

Power Eng 2nd Class · Give each week a clear focus.

8 weeks · About 7 hours per week

Week 1

Applied Thermodynamics and Heat Transfer & Mechanical Equipment and Components (Pumps, Compressors, Turbines, Engines)

  • Derive and apply the steady-flow energy equation to nozzles, diffusers, turbines, and compressors, working at least 15 numeric problems without reference notes.

  • Calculate conduction, convection, and radiation heat transfer rates for flat walls, cylinders, and heat-exchanger surfaces, including combined-mode cases.

  • Explain the Rankine cycle, reheat, and regenerative feedwater heating, then compute cycle efficiency, heat rate, and specific steam consumption for three sample steam conditions.

  • Classify pump types and match each to its typical service, head-flow characteristic, and NPSH requirement in a written comparison table.

  • Solve centrifugal pump affinity-law problems relating speed, impeller diameter, flow, head, and power, and state the practical limits of each law.

Your checkpoint

A worked problem set of 20 thermodynamics and pump/compressor calculations with answers, unit checks, and a one-page formula sheet you can reuse in later weeks.

Week 2

High-Pressure Boilers and Combustion Systems & Applied Thermodynamics and Heat Transfer

  • Trace the feedwater and steam path through a high-pressure boiler, labeling economizer, drum, superheater, reheater, and air heater, and state the duty of each section.

  • Compute boiler efficiency by both the input-output and heat-loss methods, and identify which losses dominate at low and high load.

  • Describe drum internals and steam separation, and explain how carryover, priming, and foaming are detected and corrected.

  • Analyze combustion stoichiometry: calculate theoretical air, excess air from flue-gas oxygen, and the effect of excess air on stack loss and flame temperature.

  • Explain burner management, draft control, and furnace safeguards for a balanced-draft high-pressure unit.

Your checkpoint

A boiler efficiency calculation for one realistic case, showing excess air, stack loss, and unburned-carbon loss, with a short memo on how you would raise efficiency by two points.

Week 3

Instrumentation, Controls, and Safety Devices & Plant Operations, Maintenance, and Troubleshooting

  • Match sensing elements to measured variables (pressure, temperature, flow, level, conductivity, vibration) and state the failure mode of each.

  • Explain PID control action, tuning methods, and the symptoms of over-tuned and under-tuned loops in a plant context.

  • Identify the safety devices on a high-pressure boiler (safety valves, low-water cutoff, flame scanner, high-pressure limit) and describe the test and trip logic for each.

  • Build a troubleshooting sequence for three symptoms: fluctuating drum level, falling pump discharge pressure, and rising bearing temperature.

  • Interpret a simple loop diagram and P&ID excerpt and list the trips and interlocks it implies.

Your checkpoint

A written troubleshooting guide covering three plant faults, each with a symptom tree, likely causes ranked by probability, and the confirming test for each cause.

Week 4

High-Pressure Boilers and Combustion Systems & Plant Operations, Maintenance, and Troubleshooting

  • Plan a boiler startup from cold, listing warm-up rate limits, drum-expansion checks, and the sequence of interlocks that must clear before firing.

  • Plan a controlled shutdown and layup, distinguishing wet, dry, and nitrogen-capped storage and when each applies.

  • Describe pressure-part inspection: drum internals, tube thickness surveys, refractory and casing inspection, and safety-valve overhaul intervals.

  • Diagnose common boiler tube failures (caustic gouging, hydrogen damage, oxygen pitting, overheating) from deposit and failure appearance.

  • Draft a preventive-maintenance schedule for one boiler and its auxiliaries over a twelve-month cycle.

Your checkpoint

A one-page startup and shutdown checklist for a high-pressure boiler plus a tube-failure diagnosis table linking appearance, mechanism, and corrective action.

Week 5

Water Treatment, Corrosion, and Chemistry & Electrical Systems and Motors

  • Explain external and internal water treatment: softening, demineralization, deaeration, oxygen scavenging, and phosphate or amine programs, and state the target range for each key parameter.

  • Interpret a water-analysis sheet (pH, conductivity, silica, iron, hardness, dissolved oxygen) and recommend corrective action for two out-of-range results.

  • Describe corrosion mechanisms in boilers and condensate systems and the chemistry control that prevents each.

  • Explain three-phase induction motor construction, slip, torque-speed behavior, and starting methods including direct-on-line, star-delta, and VFD.

  • Read a motor nameplate and calculate full-load current, then explain protection coordination, overload relays, and the purpose of motor circuit protection.

Your checkpoint

A water-chemistry control chart with target and alarm limits for a high-pressure boiler plus a motor nameplate interpretation worksheet with calculated currents and protection settings.

Week 6

Refrigeration, Air Conditioning, and Compressed Air & Electrical Systems and Motors

  • Trace the vapor-compression refrigeration cycle on a pressure-enthalpy diagram and calculate cooling capacity, compressor power, and coefficient of performance.

  • Diagnose refrigerant-side faults (undercharge, overcharge, non-condensables, restricted expansion device) from superheat, subcooling, and pressure readings.

  • Explain chilled-water and air-handling system control, including humidity control and coil performance at part load.

  • Describe compressed-air system components, calculate leakage cost from a no-load run test, and state pressure-drop and dew-point targets.

  • Explain electrical safety for plant work: lockout/tagout, arc-flash boundaries, PPE categories, and safe approach distances.

Your checkpoint

A refrigeration and compressed-air audit summary for one hypothetical system, with calculated coefficient of performance, identified losses, and three quantified savings measures.

Week 7

Codes, Standards, and Regulatory Compliance & Safety, Environmental Protection, and Emergency Response

  • Summarize the code requirements that govern boiler construction, inspection intervals, and operator certification for your jurisdiction, citing clause intent rather than memorized numbers.

  • List the records a plant must retain (inspection reports, relief-valve tests, water analyses, training) and the retention period for each.

  • Outline environmental obligations: emissions monitoring, stack testing, wastewater discharge limits, and refrigerant management.

  • Build an emergency response sequence for a major steam release, a fuel-gas leak, and a boiler low-water trip, naming roles and isolation steps.

  • Explain incident investigation and root-cause analysis, and apply a simple causal method to one near-miss scenario.

Your checkpoint

A compliance and emergency-response reference sheet covering required records, inspection intervals, and step-by-step actions for three emergency scenarios.

Week 8

Supervision, Administration, and Plant Management & Plant Operations, Maintenance, and Troubleshooting

  • Explain the supervisor's legal and practical duties for operator competence, shift handover, permit-to-work, and contractor control.

  • Design a shift-handover format and a training and qualification matrix for a boiler plant crew.

  • Review the full syllabus and rank your five weakest topics, then complete targeted practice on each.

  • Complete a timed mixed-topic practice set under exam conditions and analyze every error by cause, not just by topic.

  • Write a personal exam-day plan covering time allocation, calculation checks, and how you will handle unfamiliar wording.

Your checkpoint

A timed 60-question mixed practice set with a scored error log, a ranked list of remaining weak areas, and a written exam-day strategy.

Milestones

Week 2: Without notes, sketch the steam cycle of a high-pressure boiler plant and state where each major heat addition and loss occurs; score at least 80 percent on a 15-question thermodynamics and combustion self-test.

Week 4: Walk through a cold startup and a controlled shutdown from memory in under ten minutes, naming every interlock and safety device in sequence, and correctly identify the mechanism behind four tube-failure samples.

Week 6: Calculate refrigeration coefficient of performance and motor full-load current from raw data with no formula sheet, and pass a 20-question instrumentation, electrical, and chemistry self-test at 80 percent or better.

Week 8: Score at least 75 percent on the timed 60-question mixed set, with every missed item logged to a named cause, and have a written exam-day plan you can follow under pressure.