Occupation · SOC 51-8021
Stationary Engineers and Boiler Operators
Operate or maintain stationary engines, boilers, or other mechanical equipment to provide utilities for buildings or industrial processes. Operate equipment such as steam engines, generators, motors, turbines, and steam boilers.
Median wage
$75,190
$47,310–$121,200
Projected growth
—
—
Annual openings
—
per year
Employed (US)
30,780
Job Zone 3
Typical preparation
Medium preparation
Stackable credential programs
4 mapped
Core skills
Operations MonitoringOperation and ControlActive ListeningEquipment MaintenanceTroubleshootingRepairingCritical ThinkingQuality Control Analysis
Knowledge areas
MechanicalChemistryPublic Safety and SecurityPhysicsEngineering and Technology
Technology & tools
Facilities management softwareData base user interface and query softwareElectronic mail softwareGraphics or photo imaging softwareWeb platform development software
Representative tasks
Operate or tend stationary engines, boilers, and auxiliary equipment, such as pumps, compressors, or air-conditioning equipment, to supply and maintain steam or heat for buildings, marine vessels, or pneumatic tools.Activate valves to maintain required amounts of water in boilers, to adjust supplies of combustion air, and to control the flow of fuel into burners.Monitor boiler water, chemical, and fuel levels, and make adjustments to maintain required levels.Analyze problems and take appropriate action to ensure continuous and reliable operation of equipment and systems.Observe and interpret readings on gauges, meters, and charts registering various aspects of boiler operation to ensure that boilers are operating properly.Maintain daily logs of operation, maintenance, and safety activities, including test results, instrument readings, and details of equipment malfunctions and maintenance work.Test boiler water quality or arrange for testing and take necessary corrective action, such as adding chemicals to prevent corrosion and harmful deposits.Monitor and inspect equipment, computer terminals, switches, valves, gauges, alarms, safety devices, and meters to detect leaks or malfunctions and to ensure that equipment is operating efficiently and safely.Switch from automatic to manual controls and isolate equipment mechanically and electrically to allow for safe inspection and repair work.Perform or arrange for repairs, such as complete overhauls, replacement of defective valves, gaskets, or bearings, or fabrication of new parts.Adjust controls and/or valves on equipment to provide power, and to regulate and set operations of system or industrial processes.Clean and lubricate boilers and auxiliary equipment and make minor adjustments as needed, using hand tools.Develop operation, safety, and maintenance procedures or assist in their development.Test electrical systems to determine voltages, using voltage meters.Contact equipment manufacturers or appropriate specialists when necessary to resolve equipment problems.Weigh, measure, and record fuel used.Install burners and auxiliary equipment, using hand tools.Receive instructions from steam engineers regarding steam plant and air compressor operations.Check the air quality of ventilation systems and make adjustments to ensure compliance with mandated safety codes.Provide assistance to plumbers in repairing or replacing water, sewer, or waste lines, and in daily maintenance activities.Fire coal furnaces by hand or with stokers and gas- or oil-fed boilers, using automatic gas feeds or oil pumps.Supervise the work of assistant stationary engineers, turbine operators, boiler tenders, or air conditioning and refrigeration operators and mechanics.Investigate and report on accidents.Operate mechanical hoppers and provide assistance in their adjustment and repair.Ignite fuel in burners, using torches or flames.
Competency framework
Skill expectations by proficiency level.
emerging
Stationary boiler components and auxiliary equipment — identify and locate under direct supervision during initial facility orientation.Gauge, meter, and chart readings — observe and record basic instrument values under technician guidance in a commercial building plant room.Valve activation procedures — follow step-by-step protocols to adjust water and fuel supply levels under close supervisor oversight.Daily operational logs — complete pre-formatted entries for instrument readings and routine activities as directed by a licensed stationary engineer.Boiler water quality test kits — perform basic water sampling steps following written procedures in a supervised plant environment.Safety devices and alarm panels — recognize audible and visual alarm signals and report findings immediately to the shift supervisor.Equipment maintenance checklists — carry out routine inspection rounds using provided forms in a stationary engine room setting.Combustion air supply controls — observe adjustment procedures performed by senior operators and assist as directed in a heating plant.Facilities management software — enter basic operational data into pre-configured screens under the guidance of an experienced operator.Hand tools and basic test instruments — retrieve, use, and return under direct supervision during entry-level maintenance tasks in a boiler room.
developing
Boiler and auxiliary equipment operation — manage daily startup and shutdown sequences with minimal oversight in a mid-sized commercial facility.Gauge and meter readings — interpret instrument data and compare against acceptable operating ranges to confirm proper boiler performance during a routine shift.Valve and control adjustments — regulate water, fuel, and combustion air flow independently to sustain required steam and heat output across a building complex.Boiler water chemistry — conduct water quality tests, interpret results, and add approved treatment chemicals to prevent corrosion and scale buildup.Operational and maintenance logs — maintain accurate daily records of test results, instrument readings, and minor malfunctions using facility log systems.Equipment malfunction detection — recognize early indicators of leaks or system irregularities during scheduled inspection rounds and escalate non-routine findings appropriately.Troubleshooting common faults — diagnose and resolve frequently recurring equipment issues such as pressure fluctuations or pump failures in a familiar plant environment.Spreadsheet and office software — organize operational data and generate shift summary reports for review by senior engineering staff.Preventive maintenance tasks — perform scheduled lubrication, filter changes, and minor adjustments on compressors and auxiliary systems according to manufacturer intervals.Emergency response protocols — follow established safety and shutdown procedures during equipment alarms, applying plant-specific protocols with developing confidence.
proficient
Stationary engines, boilers, and full auxiliary systems — operate and maintain autonomously across an entire shift cycle in large industrial or marine vessel environments.Complex instrument data analysis — interpret multi-parameter gauge, meter, and chart readings to proactively identify and correct deviations before equipment failure occurs.Non-routine fault diagnosis — apply critical thinking and deductive reasoning to isolate root causes of uncommon malfunctions and implement corrective actions independently.Combustion efficiency optimization — adjust fuel, air, and water variables to maximize thermal efficiency and minimize fuel consumption across varying load conditions.Comprehensive water treatment programs — evaluate chemical test results, adjust treatment dosing schedules, and document corrective actions to sustain boiler system integrity.Full maintenance execution — plan, perform, and document corrective and preventive repairs on boilers, pumps, compressors, and associated controls without supervisory direction.Regulatory compliance documentation — prepare thorough maintenance and safety logs that satisfy jurisdictional inspection requirements and internal quality control standards.Cross-system coordination — collaborate with HVAC, electrical, and facilities teams to align boiler output with building-wide energy and comfort demands.Facilities management software — configure data inputs, query historical operational trends, and use findings to inform maintenance scheduling decisions.Judgment under pressure — assess evolving equipment conditions during high-demand periods and make time-critical decisions to protect personnel safety and system continuity.
advanced
Plant-wide operational strategy — establish operating standards, shift schedules, and long-term maintenance programs for an entire stationary engineering department.Apprentice and junior operator development — design and deliver structured on-the-job training, mentoring emerging and developing operators toward licensure readiness.Capital equipment evaluation — lead technical assessments of boiler upgrades, replacement systems, and energy-efficiency projects, providing recommendations to facility leadership.Regulatory and safety governance — interpret jurisdictional codes, interface with inspectors, and implement organization-wide compliance frameworks for boiler and pressure vessel operations.System reliability engineering — analyze historical operational data and failure patterns to drive continuous improvement initiatives that reduce unplanned downtime across facilities.Chemical and energy management oversight — direct facility-level water treatment vendor relationships and fuel procurement strategies to optimize cost and environmental performance.Emergency preparedness leadership — author and rehearse emergency response plans covering catastrophic boiler failure, hazardous releases, and multi-system outages at organizational scale.Technology integration direction — evaluate and champion adoption of advanced monitoring platforms, predictive maintenance software, and digital log systems across the engineering function.Cross-departmental liaison — represent the stationary engineering function in facility planning, capital budgeting, and sustainability initiatives with executive and project management stakeholders.Knowledge capture and standardization — document institutional expertise into SOPs, competency frameworks, and training materials that transfer organizational knowledge to the next generation of operators.
Also known as
173 alternate job titles map to this occupation.
Boiler Room OperatorSubmarine Propulsion Plant Electrical Operator (Navy 003777)Mobile Utilities Support Equipment Technician (Navy 001577)Power Station OperatorRefrigerating EngineerMCM Propulsion Technician (Navy U23A)Boiler Plant Equipment MechanicSteam Turbine OperatorHeating, Ventilation, Air Conditioning, and Refrigeration Craftsman (Air Force 3E171)Air Compressor EngineerLSD 41/49 Class Colt Pielstick Maintainer (Navy U24A)Fuels Helper (Air Force 2F011)EngineerAir Compressor OperatorGas Turbine Mechanical Systems Maintainer (Navy 003698)Blowing EngineerCompressor OperatorOperating EngineerOperatorFuels Craftsman (Air Force 2F071)Auxiliary Equipment Technician (Navy 001519)Gas Engine OperatorBreaker EngineerMissile And Space Facilities (Air Force 2M0X3)Submarine Propulsion Plant Electrical Supervisor (Navy 003785)Diesel Engine Systems Maintainer (Navy 003653)Torpedoman's Mate (Navy TM)Surface Propulsion Plant Electrical Operator (Navy 003778)Steam Plant Auxiliary Systems Manager (Navy 003651)LSD-41 Class Propulsion Technician (Navy U25A)Pump House OperatorMaterial Maintenance Specialty (Coast Guard MAT)Low Pressure Boiler OperatorAir Conditioning Engineer (AC Engineer)Operating Power Plant Combustion EngineerBoiler Service Technician (Boiler Service Tech)Refrigeration EngineerSubmarine Reactor Controls Operator (Navy 003779)Gas Turbine System Technician (Navy GS)Machinist's Mate, Nuclear Power (Navy MMN)