Power Eng 4th Class 4B study plan

Classify the major boiler types (firetube, watertube, packaged, waste-heat) and state the pressure and capacity range each is suited to

Identify every fitting on a boiler external to the shell and explain the function of each: safety valve, main steam stop, feedwater and check valves, blowdown valves, water column, gauge glass, and pressure gauge

Describe the internal fittings and where each is located: baffles, dry pipe, steam separator, feedwater distributor, and blowoff connections

Explain the purpose and correct operation of bottom and surface blowdown and the hazards of over-blowing a boiler

Interpret the duties placed on the boiler operator by the applicable pressure-equipment code for safety-valve testing, gauge-glass inspection, and low-water fuel cutoff checks

Sequence the correct startup, warm-up, and shutdown steps for a cold boiler and justify each step by the thermal stress or water-level risk it controls

State the required frequency and method for testing safety valves, low-water fuel cutoffs, and gauge glasses, and record findings in a log format

Identify the causes and correct responses to priming, foaming, carryover, and caustic embrittlement

Write the combustion equation for the fuels used in your plant and calculate theoretical air and excess air from an Orsat or flue-gas analysis

Explain the three T's of combustion and how burner design, air registers, and furnace volume control each of them

Trace the flue-gas path and explain the role of forced-draft, induced-draft, and balanced-draft arrangements, including how draft is measured in a furnace

Diagnose common combustion faults from stack appearance and flue-gas readings: high CO, high O2, smoke, and high stack temperature

Explain the chemistry behind scale, sludge, corrosion, and carryover and match each to the treatment method that controls it

Describe the operation of a softener, deaerator, and chemical dosing system, including the tests run each shift and their target ranges

Calculate blowdown percentage, cycles of concentration, and make-up rate from given chloride or conductivity figures

Convert between gauge and absolute pressure, and between temperature scales, as used in feedwater and steam tables

Identify the main pump types (centrifugal, positive displacement, reciprocating) and select the correct one for feedwater, condensate, and chemical service

Explain cavitation, NPSH, and priming, and list the pump installation faults that cause loss of suction

Identify valve types by body shape and function (gate, globe, ball, butterfly, plug, check, relief) and state where each belongs in a steam or water line

Explain how a steam trap works in each of the three families (thermostatic, mechanical, thermodynamic) and diagnose a failed-open versus failed-closed trap from symptoms

Explain the operation of motor starters, contactors, overload protection, and interlocks as they apply to boiler feed pumps and burner fans

Read a simple ladder or schematic diagram and trace the interlock chain that must be proven before a burner can light off

Describe the function and failure response of the main automatic controls: low-water cutoff, flame scanner, high-pressure and high-temperature limits, and the combustion control loop

Distinguish indicating, recording, and transmitting instruments and explain calibration checks and the consequence of an out-of-calibration safety device

Describe the vapour-compression refrigeration cycle and identify compressor, condenser, evaporator, metering device, and refrigerant states at each point

Explain the safety and environmental rules for refrigerants, including handling, leak detection, and record keeping

Explain the basic heating, ventilating, and air-conditioning system types found in a plant and how airflow, humidity, and temperature are controlled

Describe the operating principles of steam turbines and reciprocating engines, including how speed is governed and how lubrication and cooling are maintained

Apply lockout/tagout, confined-space entry, and hot-work permit rules to boiler and pressure-vessel work

State the operator's responsibilities under environmental rules for emissions, effluent, and waste handling, including spill response and reporting

Solve mixed calculation problems under time pressure: heat transfer, efficiency, fuel consumption, pump power, and expansion

Complete a full timed mock examination and review every missed item to its source concept