NIULPE 2nd Class study plan

List and describe the principal boiler types (fire-tube, water-tube, cast-iron, etc.) and their construction features, including shell, tubes, headers, and drums.

Identify and explain the function of at least 12 boiler fittings (safety valve, gauge glass, pressure gauge, low-water cutoff, feedwater check valve, etc.) and their code requirements.

Sketch a typical boiler piping arrangement showing feedwater, steam, blowdown, and safety valve connections.

Explain the purpose and operation of boiler internal and external inspections, including thickness surveys and crack detection methods.

Compare and contrast fire-tube and water-tube boiler designs, including advantages, limitations, and typical applications.

Describe the causes and prevention of common boiler failures such as tube leaks, shell cracks, and corrosion fatigue.

Summarize key sections of the ASME Boiler and Pressure Vessel Code (Section I and Section IV) and NBIC inspection code relevant to boiler construction and repair.

Explain the requirements for boiler safety valves, including sizing, setting, and testing frequency.

Identify environmental regulations affecting boiler operation (e.g., emissions limits, blowdown disposal).

Describe the combustion process for common fuels (natural gas, fuel oil, coal) and explain stoichiometry, excess air, and flue gas analysis.

Explain the operation and maintenance of various firing equipment: burners, stokers, pulverizers, and draft systems.

Outline startup, normal operation, and shutdown procedures for a typical industrial boiler, including purge and light-off sequences.

Interpret boiler operating controls and safety interlocks (flame scanners, low-water cutoffs, pressure limit switches).

Calculate excess air and combustion efficiency from given flue gas data.

Trace the feedwater path from condensate receiver through pumps, deaerator, economizer, and into the boiler, identifying key components and their functions.

Explain the operation of feedwater pumps (centrifugal, positive displacement) and control valves, including cavitation and water hammer issues.

Describe typical piping systems for steam, condensate, feedwater, and blowdown, including materials, insulation, and support requirements.

Identify water treatment methods (softening, dealkalization, oxygen scavenging) and their impact on boiler efficiency and longevity.

Calculate feedwater flow rate and pump head requirements for a given boiler capacity.

Explain the thermodynamic principles and mechanical construction of steam engines, steam turbines (impulse and reaction), and gas turbines.

Describe the function and operation of auxiliary prime mover components: governors, trip-and-throttle valves, condensers, and lubrication systems.

Differentiate between various pump types (centrifugal, reciprocating, rotary) and compressor types (reciprocating, centrifugal, screw), including their typical applications and limitations.

Explain mechanical drive components such as gearboxes, couplings, and bearings, and their maintenance requirements.

Calculate pump power, efficiency, and flow rate using affinity laws and basic formulas.

Apply the first and second laws of thermodynamics to calculate work, heat, and efficiency in Rankine and Brayton cycles.

Solve problems involving heat transfer (conduction, convection, radiation) and heat exchanger performance (LMTD, effectiveness-NTU).

Explain the basic principles of electrical circuits (Ohm's law, AC power, three-phase systems) as applied to plant motors and controls.

Describe the operation of AC/DC motors, motor starters, variable frequency drives, and typical protection devices (overloads, fuses, breakers).

Interpret instrumentation diagrams and explain the function of common sensors (pressure, temperature, flow, level) and control loops (PID).

Explain the vapor-compression refrigeration cycle and the function of compressors, condensers, evaporators, and expansion devices.

Identify common refrigerants and their environmental impacts, including phase-out regulations (Montreal Protocol, EPA Section 608).

Describe typical air conditioning systems and psychrometric processes (heating, cooling, humidification, dehumidification).

Outline safety procedures for boiler and pressure vessel operation, including lockout/tagout, confined space entry, and emergency shutdown.

Summarize key environmental regulations affecting plant operations: Clean Air Act, Clean Water Act, and waste disposal requirements.

Explain the roles and responsibilities of a plant supervisor, including scheduling, budgeting, and personnel management.

Describe preventive and predictive maintenance programs, including vibration analysis, oil analysis, and infrared thermography.

Review all domains through practice questions and identify weak areas for final review.

Create a personal summary sheet of key formulas, code requirements, and safety procedures for quick reference.

Simulate a timed exam session to assess readiness and time management.