OK Boiler Operator study plan

Sketch and label the main pressure-boundary parts of a firetube boiler and a watertube boiler from memory, then correct the sketch against a textbook diagram.

Describe how shell thickness, tube sheet thickness, and stayed-surface spacing are determined, and explain why the Oklahoma rules set minimum thickness and stay requirements.

List the required fittings on a boiler (safety valve, safety relief valve, water column, gauge glass, pressure gauge, blowdown, low-water fuel cutoff) and state the purpose and mounting rule for each.

Explain the difference between a boiler proper fitting and an external piping connection, giving three examples of each.

Define MAWP, design pressure, hydrostatic test pressure, and accumulation test pressure and state how they relate to one another.

Identify the function of each accessory: feedwater pump, injector, economizer, air preheater, superheater, deaerator, and blowdown separator, and state where each sits in the flow path.

Trace the path of steam and water through a typical packaged boiler from feedwater inlet to steam header, naming each component in order.

Interpret a gauge glass reading and explain how a water column plus gauge glass assembly resists false level indications from foaming or carryover.

Explain how a pressure gauge, pressure transmitter, and pressure control switch differ in function and where each is used.

Read a simple P&ID symbol set and match ten symbols to the equipment they represent.

Describe the operating sequence of a low-water fuel cutoff, including the difference between a float type and a probe or conductance type, and explain the manual reset requirement.

Explain how a high-pressure limit control, operating pressure control, and safety valve work together to protect the pressure boundary, and identify which is the last line of defense.

Describe flame safeguard programming: prepurge, pilot trial for ignition, main flame trial for ignition, run period, and postpurge, with the consequence of a failure at each step.

Explain the purpose of a burner management system interlock for low water, high pressure, low fuel pressure, and combustion air proving.

State the test method and recommended frequency for a low-water fuel cutoff and for a flame scanner response check.

Explain the four main problems feedwater treatment addresses (scale, corrosion, carryover, and deposits) and name the test used to monitor each.

Describe external treatment (softening, demineralization, deaeration) versus internal treatment (oxygen scavengers, scale inhibitors, pH and alkalinity control) and state when each is appropriate.

Interpret results for hardness, alkalinity, pH, conductivity, dissolved oxygen, and sulfite, and state a corrective action for an out-of-range value of each.

Explain the combustion triangle and the three T's, and describe how excess air, stack temperature, and CO relate to combustion efficiency.

Compare natural gas, propane, and fuel oil No. 2 in terms of stoichiometric air requirement, typical excess air, and handling hazards.

Describe the purpose of a draft fan, an air/fuel ratio linkage, and a stack damper, and explain what happens if they fall out of calibration.

Write the cold startup sequence for a packaged boiler from pre-start inspection through online operation, including warm-up rate limits and why they matter.

Write the normal shutdown and emergency shutdown sequences and state the conditions that require an immediate emergency shutdown.

Explain bottom blowdown and surface blowdown: purpose, procedure, frequency, and the safety precautions for each.

Describe how to respond to low water, high water, carryover, and a safety valve that is simmering or lifting below set pressure.

Explain the warm-up and cooling rate limits for a boiler and the damage caused by thermal shock to tube sheets and refractory.

Perform and document a safety valve pop test procedure, including the precautions, the required test pressure, and the records to keep.

Explain the difference between a try lever test and a pop test and state when each is acceptable.

Describe the checks a boiler operator must make at the start of each shift and record in a log.

Explain how to verify a flame scanner, a low-water cutoff, and a high-pressure limit without defeating the protection they provide.

Describe the lockout/tagout steps for taking a boiler out of service for internal work.

Describe the preparation for an internal inspection: cool-down, drain, isolation, opening, cleaning, and safe entry.

List the typical defects found on firetube and watertube boilers (scale, pitting, cracking, bulging, tube leaks, caustic embrittlement, refractory spalling) and the cause of each.

Explain hydrostatic testing: purpose, test pressure, hold time, and what a passing result looks like.

Describe how tubes are rolled or welded, how a staybolt is replaced, and what repair work requires a certified welder and an authorized inspector's approval.

Explain the role of the authorized inspector, the jurisdiction, and the owner in the inspection and repair process.

State the Oklahoma Boiler Safety Rules requirements for operator certification or licensing, inspection frequency by boiler type, and the consequences of operating an uninspected boiler.

List the records an owner must keep and make available, including inspection certificates, repair reports, and operator logs.

Explain the Oklahoma requirements for reporting an accident or an unsafe condition and the process for returning a boiler to service after a repair.

Review all prior weeks' deliverables and re-test yourself on the weakest two domains with timed practice questions.

Build a personal reference sheet of the ten rules and formulas you are most likely to forget under exam pressure.