OH Boiler Operator study plan

Sketch and label the major boiler configurations (horizontal fire-tube, vertical fire-tube, water-tube, cast-iron sectional, electric) and state one service where each is preferred.

Identify each required fitting on a boiler (safety valve, gauge glass, pressure gauge, low-water fuel cutoff, feedwater check and stop valves, main steam stop, bottom and surface blowdown valves, vent, try cocks) and state its function in one sentence.

Explain how design pressure, design temperature, and material choice drive shell, tube, and stayed-surface thickness, and why staying is required on flat surfaces.

Distinguish the scope of the ASME Boiler and Pressure Vessel Code Section I versus Section IV in terms of what equipment each covers and the maximum pressures involved.

Describe how thermal expansion, support spacing, and nozzle reinforcement are handled in boiler design.

Sequence the gauge glass blowdown step by step (top try cock, bottom drain, glass rinse, return to service) and explain the purpose of each step.

Diagnose low water, high water, foaming, priming, and carryover from a written description of symptoms, and state the correct operator response for each.

Trace the feedwater path fromDA tank through feed pump, check valve, and regulating valve, and explain on/off versus modulating level control.

Explain how a low-water fuel cutoff works, how it is tested, and what happens to the burner if it fails.

Describe the effects of scale, sludge, and dissolved oxygen on water level indication and heat transfer, and state the corrective action for each.

Build a cold-start sequence from a written procedure: pre-purge, light-off, warm-up rate, and pressure raising, noting where each fitting is monitored.

Explain why slow warm-up reduces thermal stress and where expansion movement occurs on a fire-tube versus a water-tube unit.

Perform a written bottom blowdown and surface blowdown procedure, including valve sequencing and the reason for opening the downstream valve first and closing it last.

Describe normal operating rounds: reading level, pressure, stack temperature, and feedwater temperature, and what deviation triggers action.

Explain a normal and an emergency shutdown sequence and the order in which the fuel, draft, and feedwater are secured.

Write the combustion equations for methane and for a typical fuel oil, and calculate the theoretical air required per unit of fuel.

Explain excess air, its effect on stack loss and efficiency, and interpret a flue gas analysis showing O2, CO2, CO, and stack temperature.

Describe the components and light-off sequence of a gas and a No. 2 oil burner, including atomization, draft, and flame scanner proving.

Explain the purpose of the purge cycle and the consequences of a purge that is too short or bypassed.

Identify the properties of the fuels you fire (heating value, specific gravity, flash point, sulfur) and state one operational implication of each.

Outline the difference between a jurisdictional external inspection and an internal inspection, and list the preparations required before opening a boiler.

Describe the hydrostatic test procedure, the test pressure relative to allowable working pressure (per code), and the pass/fail criteria.

Explain how a safety valve is tested, the difference between a pop test and a bench test, and why setting and sealing must not be altered by the operator.

Identify common failure and deterioration mechanisms (caustic embrittlement, oxygen pitting, tube erosion, refractory spalling, corrosion under insulation) and the inspection evidence for each.

Build a preventive maintenance schedule covering burner tune-up, low-water cutoff blowdown, gauge glass cleaning, and valve exercising with frequencies.

List every automatic safety device on a boiler (low-water fuel cutoff, high-limit pressure control, operating and modulating controls, flame safeguard, safety valve, rupture disc, gas train components) and state the failure mode each protects against.

Write the operator response to a furnace puff-back or explosion, a tube rupture, a fuel leak, and a low-water condition, in order of actions.

Explain the flame safeguard sequence including trial for ignition, flame failure response time, and the reason for lockout.

Describe the procedure for testing a low-water fuel cutoff by evaporation and by blowdown, and explain why the evaporation test is more reliable.

State the PPE and lockout/tagout requirements for burner service and for working on a fuel gas train.

Summarize how ASME construction code, the NBIC, and local jurisdictional rules fit together, and identify which one governs repairs and alterations.

State the operator's recordkeeping duties: log entries, water treatment records, safety valve test records, and reporting of accidents or deficiencies.

Explain the operator's authority and responsibility to shut down a boiler that is unsafe, and the notification chain that follows.

Review and re-drill the two lowest-scoring topics from weeks 1 through 6.

List the code-required items checked at each shift and explain why the log is a legal record.

Take two full-length, timed practice exams under exam conditions and review every missed item to its source concept.

Re-derive the top 20 facts you have missed repeatedly and recite them without notes.

Re-walk the startup, shutdown, blowdown, and emergency procedures end to end until they are automatic.

Identify any domain still below 80% and complete a targeted 45-minute drill on it.