AK Boiler Operator study plan

Distinguish fire-tube from water-tube boiler designs and list the pressure, capacity, and response characteristics that separate them.

Label the principal pressure parts of a shell boiler (shell, tube sheets, furnace, crown sheet, stayed surfaces, mud drum) and state the function of each.

Explain how staybolts, tube ligaments, and shell thickness relate to the ASME code rules for minimum wall thickness and maximum allowable working pressure.

Identify what the ASME Boiler and Pressure Vessel Code Section I, Section IV, and the NBIC each govern, and where the jurisdiction's own rules take precedence.

Interpret a manufacturer's stamping and nameplate data to state design pressure, design temperature, and maximum allowable working pressure.

Explain the code basis for safety valve sizing, set pressure, accumulation limits, and the requirement for a non-return or check arrangement on the discharge.

Trace the required size, location, and piping rules for pressure gauges, water level indicators, try cocks, and blowdown connections on a boiler.

Describe the function and failure mode of each major fitting: safety valve, safety relief valve, gauge glass, low water fuel cutoff, and bottom blowdown valve.

Differentiate operating controls from limiting controls and from safety controls, giving one example of each.

Sketch a simple steam boiler trim arrangement showing feedwater, main steam, bottom blowdown, and water column connections.

Explain how a low water fuel cutoff is wired into the burner circuit so that a low water condition interrupts fuel flow independent of the operating control.

Compare on-off, high-low-low fire, and modulating combustion control strategies and state which boiler sizes and load profiles each serves.

Describe the combustion process in terms of fuel, air, ignition, and the three T's: temperature, turbulence, and time.

Calculate percent excess air and percent CO2 from a flue gas analysis and explain what the readings indicate about air-fuel ratio.

Compare natural draft, forced draft, induced draft, and balanced draft arrangements and identify which boiler types typically use each.

Identify the common gaseous and liquid fuels used in packaged boilers and state the flash point, viscosity, and atomization concerns for each oil grade.

Explain how a burner is purged before lightoff, why purge volume and timing matter, and what happens if purge is skipped.

Write out the correct sequence of steps for a cold startup of a packaged boiler, from pre-start inspection through warm-up to on-line.

Describe the difference between a normal shutdown, a seasonal or long-term layup shutdown, and an emergency shutdown, including fuel and draft handling in each.

Demonstrate the correct procedure and valve sequencing for a bottom blowdown and for blowing down a water column or gauge glass.

Trace feedwater from the receiver through the deaerator, feedwater pump, economizer or feedwater regulator, and into the boiler, naming the purpose of each component.

Explain how dissolved oxygen, hardness, silica, and total dissolved solids are controlled, and name the chemical or mechanical method used for each.

Distinguish scale, sludge, pitting, caustic embrittlement, carryover, priming, and foaming by cause, symptom, and correction.

Calculate blowdown amount needed to hold boiler water TDS at a target when feedwater TDS and steam demand are known.

Explain how surface blowdown differs from bottom blowdown in purpose, frequency, and connection location.

Describe how to perform and document a safety valve pop test, and explain the accumulation test and hydrostatic test and when each is required.

Explain the evaporation or lowered-water test used to verify that a low water fuel cutoff actually trips the burner.

Outline the scope of an external inspection versus an internal inspection and list what an inspector looks for in each.

Sequence the steps for routine maintenance tasks: gauge glass replacement, valve repacking, tube cleaning, and refractory patching.

Explain what a flame scanner or flame safeguard must prove during a trial for ignition and how its response is tested.

Explain the immediate operator response to a low water condition, including when water may be added and when the fuel must be secured and the boiler taken off line.

Describe the hazards and correct responses for high water level, fuel leaks, furnace explosion, flame failure, and stack or flue fires.

Identify the PPE and lockout/tagout practices required before working on a boiler, burner, or fuel train.

Recognize carbon monoxide exposure, steam leak, and scald hazards and state the controls that prevent each.

Explain how a safety valve that fails to reseat or a leaking gauge glass escalates from nuisance to emergency and what the operator does at each stage.

Summarize what the jurisdiction's boiler code, licensing rules, and inspection certificate requirements place on the operator.

Explain the purpose and required contents of the operator log, including pressure, water level, blowdown, and test records.

Describe how EPA air permitting and emissions limits, and OSHA worker safety rules, apply to boiler room operations.

List the operator's responsibilities during an inspection and what constitutes an actionable unsafe condition that must be reported.

Reinforce weak areas with full-length timed practice covering all eight domains.