Loading page content
Preparing content…
SOC 49-9098
General maintenance and repair workers correspond to U.S. O*NET / SOC 49-9071.00, Maintenance and Repair Workers, General: use skills from two or more maintenance or craft occupations to keep machines, mechanical equipment, or building structures in repair. Duties may involve pipe fitting, HVAC maintenance, insulation, welding, machining, carpentry, electrical or mechanical equipment repair, installing, aligning, and balancing new equipment, and repairing buildings, floors, or stairs. Core work includes routine maintenance such as inspecting drives, motors, or belts, checking fluid levels, and replacing filters; inspecting, operating, or testing machinery and equipment to diagnose mechanical faults; adjusting functional parts of devices or control instruments with hand tools, levels, plumb bobs, or straightedges; repairing machinery, equipment, or structures with hammers, hoists, saws, drills, wrenches, precision measuring instruments, and electrical or electronic test equipment; ordering parts, supplies, or equipment from catalogs or suppliers as needed; diagnosing mechanical problems and determining corrective action, consulting drawings, repair manuals, or parts catalogs when needed; and installing, aligning, and balancing new equipment. Official scope: Perform work involving the skills of two or more maintenance or craft occupations to keep machines, mechanical equipment, or the structure of a building in repair. Duties may involve pipe fitting; HVAC maintenance; insulating; welding; machining; carpentry; repairing electrical or mechanical equipment; installing, aligning, and balancing new equipment; and repairing buildings, floors, or stairs.
Model impact index for three equally weighted representative core tasks; not a measured share of working time or a job-loss probability. floor((50+0+75)/3+0.5)=42; fermatmind-ai-impact-v1; 2026-10-18.
Observation suggestion | First complete the three G1 tables, checking dates, units, planned costs, and unapproved matters. They reflect only organization skills in this paper exercise. Actual repair, isolation, and acceptance require corresponding qualifications, authority, permits, training, and assessment; interest questionnaires or G1 cannot establish them.
Caution signals | O*NET also reports for 49-9071.00: hazardous-equipment exposure, 44% daily; hazardous conditions, 35% daily; contaminants, 36% daily; very hot or cold temperatures, 45% at least weekly but not daily; high-place work, 28% at least monthly but not weekly; enclosed vehicles or equipment, 41% daily; and minor burns, cuts, bites, or stings, 41% daily. Work may occur in cold, heat, confined spaces, or awkward postures. Consequences of error are rated fairly serious by 27%; conflict situations occur at least yearly but not monthly for 38%. This occupation addresses safe operation of equipment and building systems. A single electric shock, pressurized disassembly, gas or refrigerant leak, missing protection during work at height or in confined spaces, inadequate lockout / tagout and isolation, or action beyond scope or authority can cause injury, equipment damage, or prolonged downtime. Most jurisdictions also impose safety, special-operation, and facility-management requirements, such as relevant qualifications, permits, and organizational authority for electrical work, welding, pressure vessels, heights, or confined spaces. If you struggle to follow standards in noisy, dirty environments with temperature changes, maintain lockout / tagout and review steps under pressure, or accept responsibility for others' safety and equipment outcomes, treat these as practical costs requiring serious consideration.
General maintenance and repair workers use two or more maintenance or craft skills to maintain machinery, mechanical equipment, and building structures, delivering maintenance, parts, and work-order records. Specific work follows qualifications and authority. Insufficient evidence: this page has not obtained a wage distribution for the precise occupation in China.
Career direction comparison
Introduction | The comparison has four columns: career direction, core work and outputs, key differences, and which choices it better suits. General maintenance, industrial machinery, HVAC, plumbing, electrical work, and boiler operations often connect within one facility or factory, but connection does not mean interchangeability. Changing direction requires learning qualification requirements, procedures, authority scope, statutory inspections, and responsibility boundaries.
| Career direction | Core work and outputs | Key difference | Which choices it better suits |
|---|---|---|---|
| This occupation: General Maintenance and Repair Workers (49-9071.00) | Core work and outputs: perform routine maintenance and inspections, checking drives, motors or belts and fluid levels, and replacing filters; inspect, operate, or test machinery and equipment to diagnose faults; repair machinery, equipment, or structures with hand and power tools, precision instruments, and electrical or electronic test equipment; adjust functional parts of devices or control instruments. Duties may involve piping, HVAC, insulation, welding, machining, carpentry, electrical or mechanical repair, and buildings, floors, or stairs; install, align, and balance new equipment. Outputs are inspection, work-order, acceptance, and ledger records (U.S. SOC 49-9071.00). |
AI's impact on careers
Insufficient evidence: this page has not obtained a precise AI exposure score, site adoption rate, or efficiency-effect study for 49-9071 and assigns no exposure level. O*NET supports repair, inspection, and record tasks. Associated deduplicated 2025 recruitment advertisements mention Office5%, Excel and Outlook at 4% each, and Word, PowerPoint, and SAP at 1% each; these are not site prevalence or AI adoption rates. The editorial suggestion is to test record organization and retrieval with G1 synthetic materials, checking accuracy, time spent, and review costs. Actual equipment work requires separate qualifications, organizational authority, and permits. AI Impact Score 42% is an editorial estimate. Model impact index for three equally weighted representative core tasks; not a measured share of working time or a job-loss probability. floor((50+0+75)/3+0.5)=42; fermatmind-ai-impact-v1; 2026-10-18.The three tasks, ratings and sources are listed in the FermatMind method source record on this page.
FermatMind AI Impact Score estimation method v1
FermatMind / 费马测试 · 2026-10-18
Mainland China pay reference
Classification crosswalk note | U.S. SOC 49-9071.00 is General Maintenance and Repair Workers within installation, maintenance, and repair occupations. Skill breadth and authority levels differ from industrial machinery mechanics (49-9041; maintenance workers and millwrights have separate codes), HVAC and refrigeration mechanics and installers (49-9021), plumbers, pipefitters, and steamfitters (47-2152), electricians (47-2111), stationary engineers and boiler operators (51-8021), and facilities managers (11-3013). International classifications such as ISCO-08 indicate only the broad position of maintenance and repair roles and cannot replace U.S. SOC or mainland China's work qualifications, occupational classification, and statistical definitions. Work qualifications defined by mainland China's safety, special-operation, and equipment-management rules do not precisely correspond one to one with this U.S. occupation. Definitions and legal settings differ, so no numerical conversion is made.
Occupational definition | General maintenance and repair workers on this page correspond to U.S. SOC 49-9071.00, Maintenance and Repair Workers, General. The official scope is to use skills from two or more maintenance or craft occupations to keep machinery, mechanical equipment, or building structures in repair. Duties may involve pipe fitting, HVAC maintenance, insulation, welding, machining, carpentry, electrical or mechanical repair, installing, aligning, and balancing new equipment, and repairing buildings, floors, or stairs. Core tasks include routine maintenance, checking drives, motors or belts and fluid levels, and replacing filters; inspecting, operating, or testing machinery and equipment to diagnose faults; adjusting functional parts of devices or control instruments; repairing machinery, equipment, or structures with tools, precision instruments, and electrical or electronic test equipment; ordering parts, supplies, or equipment as needed; diagnosing mechanical problems and corrective action using drawings, manuals, and parts catalogs; installing, aligning, and balancing new equipment; and completing required work orders and ledgers. Outputs are verifiable inspection, work-order, acceptance, and ledger records. These are U.S. definitions; see this page's notes for mainland China's work qualifications and statistical definitions.
U.S. pay reference
Direct answer | The U.S. 2025 median is $23.84 per hour and $49,590 per year. Annual wages are $35,350 at the 10th percentile, $40,840 at the 25th percentile, $62,620 at the 75th percentile, and $77,180 at the 90th percentile (BLS OEWS 2025, presented through O*NET). Employment and growth use BLS Employment Projections (2025—2035): about 1,621,800 jobs in 2025 to about 1,690,500 in 2035 (approximately +4%), with about 148,700 annual openings including growth and replacement needs. National percentiles are neither starting pay nor causes of individual differences; check actual qualification, area, and shift terms separately.
| Wage-distribution position | Annual-wage reference | Conversion limits | How to interpret this position |
|---|---|---|---|
| 10th percentile | 10th-percentile annual wage $35,350 (2025, BLS OEWS, 49-9071.00) | Official annual wages, not individual monthly income | The 10th percentile of $35,350 is only a lower national-distribution position, not apprentice or starting pay. |
| Median (50%) |
Career-fit guide
Direct answer | Assessments do not predict this occupation's performance, examinations, or qualifications. First complete the G1 synthetic-material check; actual operational skills require formal training and organizational assessment.
You may be better suited： Fit signals: willing to handle equipment and building-system problems hands-on under procedures and checklists, maintain standards and stability amid noise, temperature differences, and dirt, truthfully record work orders and ledgers, and seek qualified personnel under organizational rules when beyond qualifications or authority.
These situations call for caution： Caution signals: difficulty following standards amid noise, temperature differences, and dirt, maintaining isolation, lockout / tagout, and review steps under urgency and emergency-repair pressure, or stopping, reporting, and handing over matters beyond qualifications or authority.
Try an entry exercise： Verification suggestion | Complete G1 first, then check target training, qualifications, and authority. Actual observation or practice requires organizational arrangements; exercises grant no operational authority.
Work pressure, risks, and professional boundaries
Checking suggestion | Focus on six issue types: energy and work conditions, diagnosis and results, record truthfulness, personal-information permissions, staffing coverage, and contractor acceptance. Appropriate personnel handle them under specific conditions and site procedures; not all hazardous work equals one operator certificate.
Evidence scope | This page synthesizes O*NET 49-9071.00 tasks and work context: routine maintenance, 82; inspecting, operating, or testing to diagnose faults, 76; adjusting functional parts, 72; repairing machinery, equipment, or structures, 72; ordering parts, 71; diagnosing mechanical problems, 70; making decisions and solving problems, 89; inspecting equipment, structures, or materials, 87; repairing and maintaining mechanical equipment, 83; hazardous equipment, 44% daily; hazardous conditions, 35% daily; contaminants, 36% daily; very hot or cold temperatures, 45% at least weekly but not daily; high-place work, 28% at least monthly but not weekly; others' health and safety, 65% very high responsibility; consequences of error, 27% fairly serious; and typical workweek, 62% more than 40 hours. Qualifications and permits refer to work-safety, special-operation, and equipment-management requirements. Wage and employment figures are background only, not risk-assessment inputs.
Entry, qualifications, and career development
Entry checks | U.S. BLS lists typical high-school or equivalent education and moderate-term on-the-job training; consider O*NET education responses and general Job Zone preparation separately. First check target employers, training, and jurisdictional qualifications, then train and assess under organizational arrangements. Registered apprenticeships and directional certifications are not uniformly mandatory. G1 is only a paper check; real independent work requires applicable qualifications, authority, and permits.
Career outlook and related career transitions
The U.S. 2025 median for 49-9071 is $23.84 / hour and $49,590 / year. BLS2025—2035 projects 1,621,800 to 1,690,500 jobs, +4.2%, with 148,700 annual growth and replacement openings. Wages exclude self-employment; EP includes it. Precise Chinese occupational wages were not obtained on this page and are not replaced with substitutes.
United States · SOC49-9071, directly from BLS EP2025—2035, not O*NET's older displayed period
Employment rises from approximately 1,621,800 jobs in 2025 to approximately 1,690,500 in 2035, a change of approximately +4%; projected annual openings over the period are about 148,700
Employment scale, growth, and job openings
BLS projects approximately 4% growth, with many openings from occupational transfers and exits. Projection context is not causal research on local facility outsourcing conditions or AI.
General maintenance and repair workers on this page correspond to U.S. SOC 49-9071.00: use skills from two or more maintenance or craft occupations to keep machinery, mechanical equipment, or building structures in repair. Duties may involve pipe fitting, HVAC maintenance, insulation, welding, machining, carpentry, electrical or mechanical repair, installing, aligning, and balancing new equipment, and repairing buildings, floors, or stairs. Core work includes routine maintenance such as inspecting drives, motors or belts, fluid levels, and filters; inspecting, operating, or testing machinery and equipment to diagnose faults; adjusting functional parts of devices or control instruments; repairing machinery, equipment, or structures with tools, precision instruments, and electrical or electronic test equipment; ordering parts, supplies, or equipment as needed; and diagnosing mechanical problems and corrective action using drawings, manuals, and parts catalogs. Common employers include real estate and rental and leasing, manufacturing, government, accommodation and food services, educational services, and other industries. This page uses U.S. occupational-classification definitions.
Choose a real task from this page for a small practice project or a conversation with someone in the field. Use the planning guides to set a date, an output and feedback questions before deciding whether to continue.
Fit signals | U.S. O*NET 49-9071.00 work-activity importance shows the most important activities as making decisions and solving problems, 89; inspecting equipment, structures, or materials, 87; communicating with supervisors, peers, or subordinates, 84; repairing and maintaining mechanical equipment, 83; getting information, 81; handling and moving objects, 79; identifying objects, actions, and events, 79; and operating vehicles, mechanized devices, or equipment, 79. Work context shows using hands to handle, control, or feel objects and tools, 68% continually or almost continually; outdoor exposure to all weather, 51% daily; hazardous equipment, 44% daily; noise, 49% daily; common protective or safety equipment, 58% daily; decision-making freedom, 42% a lot of freedom; importance of being exact or accurate, 40% very important; impact on coworkers' or company results, 61% important results; responsibility for others' health and safety, 65% very high responsibility; and typical workweek, 62% more than 40 hours. If you enjoy sustained hands-on work with equipment and building systems, follow procedures in troubleshooting and interpretation and safety requirements in responses, switch between equipment and settings, and keep truthful records, this occupation's daily demands are closer to your working style.
This checklist is for self-questioning only, not a hiring standard, ability score, job-competence assessment, or safety, medical, or legal advice. This page covers U.S. O*NET / SOC 49-9071.00, Maintenance and Repair Workers, General, whose fixed-index Chinese name denotes general maintenance and repair workers. Common recruitment and industry titles include maintenance worker, maintenance technician, facilities technician, equipment repair worker, property maintenance worker, maintenance technologist, and mechanical repair technician. The official scope is to use skills from two or more maintenance or craft occupations to keep machinery, mechanical equipment, or building structures in repair. Duties may involve pipe fitting, HVAC maintenance, insulation, welding, machining, carpentry, electrical or mechanical repair, installing, aligning, and balancing new equipment, and repairing buildings, floors, or stairs. Core tasks include routine maintenance such as inspecting drives, motors, or belts, checking fluid levels, and replacing filters; inspecting, operating, or testing machinery and equipment to diagnose mechanical faults; adjusting functional parts of devices or control instruments with hand tools, levels, plumb bobs, or straightedges; repairing machinery, equipment, or structures with hammers, hoists, saws, drills, wrenches, precision measuring instruments, and electrical or electronic test equipment; ordering parts, supplies, or equipment from catalogs or suppliers as needed; and diagnosing mechanical problems and corrective action, consulting drawings, repair manuals, or parts catalogs as needed. Work features face-to-face or team discussions, 90% daily; constant contact with others, 75%; responsibility for others' health and safety, 65% very high responsibility; using hands to handle, control, or feel objects and tools, 68% continually or almost continually; outdoor work in all weather, 51% daily; hazardous-equipment exposure, 44% daily; noise exposure, 49% daily; common protective or safety equipment, 58% daily; and typical workweeks exceeding 40 hours, 62%. Major industries are real estate and rental and leasing, 20%; manufacturing, 13%; and government, 12%. BLS OOH2025 lists real estate and rental and leasing at 20%, manufacturing at 13%, and government excluding state and local education and hospitals at 12%. The remaining 55% is an arithmetic remainder, not an officially listed industry.
G1 | 60-minute synthetic-material check: paper maintenance plans, work-order drafts, and escalation handovers only, with no real equipment contact. See G1 below for inputs and recalculation answers. Produce three tables checking dates, units, costs, and unapproved matters.
Direct answer | General maintenance and repair workers on this page correspond to U.S. SOC 49-9071.00. Work falls into several categories: (one) Preventive maintenance and inspections: perform routine tasks such as checking drives, motors, belts, and fluid levels and replacing filters, inspect equipment and building systems periodically, and record condition. (two) Fault diagnosis: inspect, operate, or test machinery and equipment to diagnose mechanical faults and determine corrective action, consulting drawings, repair manuals, or parts catalogs as needed. (three) Repair, disassembly, assembly, and adjustment: repair machinery, equipment, or structures with hammers, hoists, saws, drills, wrenches, precision measuring instruments, and electrical or electronic test equipment; adjust functional parts of devices or control instruments using hand tools, levels, plumb bobs, or straightedges. (four) Building and system maintenance: duties may involve pipe fitting, HVAC maintenance, insulation, welding, machining, carpentry, electrical or mechanical repair, and repairs to buildings, floors, or stairs. (five) Parts and outsourcing collaboration: order parts, supplies, or equipment from catalogs or suppliers as needed and check delivery, acceptance, and costs with contractors. (six) Installation and records: install, align, and balance new equipment and truthfully complete work orders, inspection records, parts records, and asset ledgers. The work cycle connects order receipt and risk confirmation—isolation and lockout / tagout—inspection or diagnosis—disassembly, replacement, and adjustment—restoration, trial operation, and acceptance—records, handover, and review. This page distinguishes this occupation from industrial machinery mechanics, HVAC and refrigeration mechanics, plumbers, electricians, stationary engineers and boiler operators, and facilities managers. General maintenance authority does not extend to construction, inspections, or statutory inspections requiring special-operation qualifications or specialist contracting.
Repair and record guidance | Begin with order receipt and risk confirmation. Check equipment and building systems, previous-shift records, fault history, and parts stocks under organizational procedures. First isolate, lock out / tag out, and confirm released energy, then inspect or diagnose and disassemble, replace, or adjust within authority. For energized, pressurized, high-place, confined-space, or hot work, construction beyond personal qualifications or authority, or statutory inspection requirements, engage appropriately qualified personnel or contractors and review under organizational rules. Document important judgments, replacements, acceptance, and changes in work orders and ledgers for supervisor, safety, and quality review.
Safety-checking suggestion | For each operation and jurisdictional list, separately check statutory qualifications, organizational authority, work permits, isolation, protection, and supervision conditions. Do not operate without meeting requirements. Evacuate and report anomalies or injury risks under site procedures. Actual shutdown and isolation are performed by appropriately authorized personnel; this page does not teach site procedures.
Boundary conclusion | This page covers U.S. SOC 49-9071.00. The key distinction from adjacent roles lies in skill breadth and authority level. This occupation combines two or more maintenance or craft skills for daily maintenance and repair of machinery, equipment, and building structures, producing verifiable inspection, work-order, and acceptance records. Industrial machinery mechanics (49-9041; maintenance workers and millwrights have separate codes) focus on installation, preventive maintenance, diagnosis, and repair of industrial machinery, usually concentrating on production equipment. HVAC and refrigeration mechanics and installers (49-9021) focus on installing and repairing HVAC and refrigeration systems with specialized qualification and refrigerant-management requirements. Plumbers, pipefitters, and steamfitters (47-2152) focus on installing and repairing water, drainage, gas, and process piping. Electricians (47-2111) address electrical-system installation, maintenance, and code compliance. Stationary engineers and boiler operators (51-8021) address boiler and power-system operation and monitoring. Facilities managers (11-3013) address facility operations, budgets, outsourcing, and compliance. Skill breadth and authority levels differ; powers for energized, pressurized, special-operation, and statutory-inspection work cannot be carried across roles. General maintenance authority does not automatically include specialist-construction contracting or statutory-inspection qualifications.
| Dimension | Main direction | Comparison direction |
|---|---|---|
| Core purpose | This occupation's core purpose | Perform preventive maintenance, fault diagnosis, repairs, and installation on machinery, equipment, and building structures within personal qualifications, organizational authority, and safety procedures: order receipt and risk confirmation; isolation and lockout / tagout; inspection and interpretation; disassembly, replacement, and adjustment; restoration, trial operation, and acceptance; and records, handover, and tracking. Make equipment and facility availability and repair processes traceable and consistent with safety, occupational-health, and facility-management requirements. | Core principles of adjacent roles | Most roles in the same group and adjacent roles aim to keep equipment, facilities, and building systems safe and usable and make processes and outcomes traceable. They differ in work objects, skill breadth, and authority levels: production-equipment maintenance, HVAC and refrigeration systems, piping systems, electrical systems, boiler and power-operation duty, or facility operations, outsourcing, and compliance management. |
| Main objects and basis | Main objects and basis of this occupation | Address preventive maintenance, fault diagnosis, repair, and installation of machinery, mechanical equipment, building structures, and associated systems such as electrical, piping, HVAC, doors, windows, floors, and stairs. The basis is personal qualifications and organizational authority; equipment and facility management and inspection rules; work permits, isolation, lockout / tagout, and personal-protection requirements; and occupational-health, hazardous-work, data, and information-security requirements. | Main objects and basis of adjacent roles | Industrial machinery mechanics follow production-equipment maintenance, mechanical-drive, hydraulic and pneumatic, alignment, and vibration-analysis requirements; HVAC and refrigeration mechanics follow system installation and repair, refrigerant, and environmental-management requirements; plumbers, pipefitters, and steamfitters follow water, drainage, gas, and process-piping installation, pressure-test, and code requirements; electricians follow electrical installation, repair, safety, and code requirements; stationary engineers and boiler operators follow boiler and power-system operation, monitoring, emissions, and safety requirements; facilities managers follow facility-operation, budget, outsourcing, compliance, and service-level requirements. |
Perform routine maintenance such as inspecting drives, motors, or belts, checking fluid levels, and replacing filters, inspect equipment and building systems periodically, and record operating condition and hazards.
Inspect, operate, or test machinery and equipment to diagnose mechanical faults and determine corrective action, consulting drawings, repair manuals, or parts catalogs as needed.
Repair machinery, equipment, or structures with hammers, hoists, saws, drills, wrenches, precision measuring instruments, and electrical or electronic test equipment, and adjust functional parts using hand tools, levels, plumb bobs, or straightedges.
Duties may involve pipe fitting, HVAC maintenance, insulation, welding, machining, carpentry, electrical or mechanical repair, and repairs to buildings, floors, or stairs.
Order parts, supplies, or equipment from catalogs or suppliers as needed and check and document contractor delivery, acceptance, and cost changes.
Install, align, and balance new equipment and truthfully complete work orders, inspection records, parts and asset ledgers, and change records.
Checks before joining | Use the following six items one by one before applying or joining to avoid inferring actual duties and authority from titles or promotional wording. Base findings on written recruitment information, employment contracts, job descriptions, qualifications, authorization documents, and safety rules, and continue confirming after joining. This page lists checking directions only, not any organization's formal requirements. Special note: this occupation involves energized, pressurized, high-place, confined-space, and hot work. Confirm specific requirements for special-operation qualifications, work permits, personal protection, on-call arrangements, and outsourcing scope.
Checking guidance | Similar titles can have very different duties and authority. Some focus on property and building facilities, some on industrial equipment, some on a single HVAC, electrical, or piping system, and some on duty coverage and inspections. Special-operation qualifications, permits, on-call and emergency repairs, outsourcing scope, and statutory-inspection responsibilities also differ by organization and jurisdiction.
| Key difference | This occupation combines two or more maintenance skills; industrial machinery, HVAC, plumbing, electrical, and boiler-operation directions have their own task emphases. Mechanical and building settings may overlap. Occupational codes do not establish uniformly broader or narrower authority; statutory qualifications and organizational permissions require item-by-item checks. |
| Better suited to people willing to handle different equipment and building-system problems in one facility, enjoy hands-on work, follow procedures amid noise, temperature changes, and dirt, switch between preventive maintenance and sudden faults, and accept responsibility for safety and outcomes. |
| Industrial Machinery Mechanics and Maintenance Workers and Millwrights (49-9041) | Core work and outputs: install and adjust industrial machinery and equipment, perform preventive maintenance and condition monitoring, diagnose mechanical and hydraulic or pneumatic faults, repair or replace components, and align, balance, and trial-run equipment. Outputs are equipment-maintenance, repair, alignment, and condition records. | Industrial machinery mechanics 49-9041 focus on production and processing machinery. This occupation combines two or more maintenance skills across machinery and buildings. Codes alone cannot establish skill depth, capacity responsibility, or breadth of authority. | Editorial direction suggestion: explore industrial machinery if you want deeper expertise in production and processing machinery. This occupation also covers machinery; the settings are not mutually exclusive. |
|---|
| Heating, Air Conditioning, and Refrigeration Mechanics and Installers (49-9021) | Core work and outputs: install and test HVAC and refrigeration equipment, repair fans, compressors, heat exchangers, and control circuits, evacuate and charge refrigerants and commission systems, and address air-quality and energy-efficiency issues. Outputs are system testing, repair, commissioning, and environmental-compliance records. | Key difference: HVAC and refrigeration mechanics and installers address system testing, charging, repair, and commissioning, usually requiring refrigerant-management, environmental, and specialist certifications and involving electrical, duct, and control systems. This occupation may perform routine HVAC maintenance such as filters, belts, and cleaning, while refrigerant circuits, charging, pressure, and specialized compliance work usually require appropriately qualified personnel. | Better suited to people who want HVAC and refrigeration installation, commissioning, and troubleshooting and accept specialist certification and environmental-compliance requirements; this occupation emphasizes routine maintenance across systems. |
|---|
| Plumbers, Pipefitters, and Steamfitters (47-2152) | Core work and outputs: prefabricate and install water, drainage, gas, and process piping from drawings; connect, seal, support, and insulate it; perform pressure tests, flushing, and clearing; and troubleshoot leaks and blockages. Outputs are pipe-installation, pressure-test, and clearing records. | Key difference: plumbers, pipefitters, and steamfitters address prefabrication, installation, pressure testing, and clearing of water, drainage, gas, and process piping, including materials, welding, sealing, pressure tests, and code compliance. This occupation's piping duties generally concern routine repair, installation, and replacement. Gas, pressure piping, concealed works, and statutory requirements need appropriately qualified personnel. | Better suited to people who want pipe-system installation, pressure testing, and clearing and accept gas, pressure, and code requirements; this occupation emphasizes routine maintenance and repair across systems. |
|---|
| Electricians (47-2111) | Core work and outputs: install and repair distribution cabinets, wiring, and control circuits; test and troubleshoot electrical faults; check insulation, grounding, and protection under codes; and assist inspections and energization. Outputs are distribution, wiring, and control-circuit installation, repair, and test records. | Key difference: electricians install, repair, and test electrical distribution, wiring, and control circuits under electrical safety, codes, permits, power-supply, and inspection requirements. This occupation may perform routine electrical maintenance such as replacing fixtures, switches, and simple wiring and testing motors, while energized work, distribution alterations, code compliance, and inspections require qualified electricians. | Better suited to people who want electrical installation, repair, and testing and accept electrical-safety and permit requirements; this occupation emphasizes routine maintenance and repair across systems. |
|---|
| Stationary Engineers and Boiler Operators (51-8021) | Core work and outputs: monitor boiler, steam, and power-system parameters; adjust combustion, feedwater, and blowdown; handle alarms and exceptions; hand over to maintenance and dispatch; and support statutory inspections. Outputs are operating-parameter, blowdown, shift-handover, and inspection records. | Key difference: stationary engineers and boiler operators address boiler, steam, and power-system monitoring, parameter adjustment, blowdown, and handover, usually requiring shift coverage, certification, statutory inspections, and emissions compliance. This occupation may perform routine maintenance and inspections of power and boiler auxiliary equipment, but boiler operation, parameter adjustments, and statutory-inspection matters require certified operators. | Editorial direction suggestion: if interested in power-system operations duty, check that direction's role requirements. Do not describe this occupation uniformly as day-shift work. |
|---|
Conclusion | The key distinction between this occupation, U.S. SOC 49-9071.00 General Maintenance and Repair Workers, and adjacent roles lies in skill breadth and authority level. This occupation combines two or more maintenance or craft skills for daily maintenance and repair of machinery, equipment, and building structures, producing verifiable inspection, work-order, and acceptance records. Industrial machinery mechanics (49-9041; maintenance workers and millwrights have separate codes) address industrial-equipment installation, preventive maintenance, diagnosis, and repair; HVAC and refrigeration mechanics and installers (49-9021) address system installation and repair; plumbers, pipefitters, and steamfitters (47-2152) address water, drainage, gas, and process piping installation and repair; electricians (47-2111) address electrical installation, repair, and code compliance; stationary engineers and boiler operators (51-8021) address boiler and power-system operation and monitoring. Skill breadth and authority levels differ; powers for energized, pressurized, special-operation, and statutory-inspection work cannot be carried across roles.
Transition | This page presents adjacent roles by skill breadth and authority level to help you choose a maintenance, repair, system, or operations direction for long-term commitment. In every direction, job readiness depends on jurisdictional qualifications such as special-operation qualifications and organizational authority, safety and equipment procedures, clear diagnosis, work, and acceptance records, and willingness to accept responsibility for others' safety and equipment outcomes. Interest questionnaires only raise questions.
Editorial ratings use the existing occupational responsibilities and AI task analysis on this page. They are not adoption rates, measured effects, job-disappearance or personal-unemployment probabilities, or official scores from Stanford or another external institution. No measured time weights or future robot deployment are assumed.
Technical feasibility: a tool may technically affect a task. This is only a feasibility judgment, not permission for use or evidence of site adoption.
Site adoption: introduction depends on equipment, safety, occupational-health, data-protection, and work-permit requirements. Tools cannot transfer responsibility for isolation, lockout / tagout, special operations, or acceptance.
Job outcomes: whether task changes increase or decrease jobs depends on facility and equipment stocks, renewal, labor supply, outsourcing models, and safety requirements; it cannot be inferred directly from technical feasibility.
| Work direction | Task | Current changes | Human control points |
|---|---|---|---|
| Inspection and preventive maintenance | Perform routine maintenance and inspect drives, motors or belts, fluid levels, and filters | Editorial experiment suggestion, synthetic materials: plans and reminders may assist; people remain responsible for site inspections and replacements | You perform inspections and replacements under plans and procedures |
| Fault diagnosis | Inspect, operate, or test machinery and equipment to diagnose mechanical faults | Editorial experiment suggestion, synthetic materials: manual and historical-data retrieval may assist; people remain responsible for interpretation and conclusions | You diagnose and interpret under procedures and manuals |
| Disassembly, assembly, and adjustment | Repair equipment or structures with tools and measuring instruments and adjust functional parts | Editorial experiment suggestion, synthetic materials: process-parameter prompts may assist; people remain responsible for hands-on work and judgment | Check statutory qualifications, organizational authority, and permits against actual work; ordinary disassembly does not uniformly require one operator certificate. |
| Electrical and system work | Perform routine electrical, piping, and HVAC maintenance and handle common faults | Editorial experiment suggestion, synthetic materials: drawing and manual retrieval may assist; people retain work and responsibility | Check jurisdictional-list qualifications and organizational permits against equipment and conduct. Pressurized work, confined spaces, and listed special operations do not all correspond to one certificate. |
| Parts and outsourcing | Order parts, supplies, or equipment as needed and check delivery and acceptance | Editorial experiment suggestion, synthetic materials: inventory and supplier information may assist; people retain acceptance and responsibility | You and purchasing check orders, acceptance, and cost changes under organizational rules |
| Installation and alignment | Install, align, balance, and trial-run new equipment | Editorial experiment suggestion, synthetic materials: measurement-data records may assist; people remain responsible for alignment and acceptance | You and specialists perform installation, alignment, and trial operation under procedures |
| Records and escalation | Complete work orders and ledgers and report and escalate anomalies and matters beyond authority | Editorial experiment suggestion, synthetic materials: work-order drafts may assist; people remain responsible for truthful records and reporting | You record, report, and escalate under organizational rules |
Evidence introduction | Judge occupational tasks, software mentions in advertisements, potential exposure, and site adoption separately. General research does not support a precise score for this occupation.
Differences introduction | These are synthetic-material experiment suggestions, not measured efficiency effects. Record and retrieval experiments confer no equipment-operation authority.
What AI mainly changesEditorial experiment suggestion: organize synthetic work orders and maintenance plans and check original inputs item by item
Still people's responsibilityIsolation, lockout / tagout, energy verification, and energized or pressurized work
What AI mainly changesEditorial experiment suggestion: retrieve synthetic parts and manual leads and check source versions
Still people's responsibilityFault interpretation, disassembly and adjustment, trial operation, and acceptance conclusions
What AI mainly changesEditorial experiment suggestion: summarize synthetic historical readings and check units and unknowns
Still people's responsibilitySpecial-operation compliance, safety supervision, statutory inspections, and accident responsibility
Responsibility introduction | Tool experiments require checks of original inputs, authority, and responsibility, without assuming accuracy or efficiency gains.
Editorial step | Check this use, synthetic inputs, and permissions. Distinguish actual work qualifications under applicable lists, organizational authority, and permits.
Editorial step | Test records and retrieval only with synthetic materials. Outputs must not directly drive disassembly, energization, resets, or acceptance.
Editorial step | Check original-input units, dates, equipment identifiers, and references item by item. Actual hazardous-energy control follows applicable procedures; OSHA1910.147 is limited to its covered servicing conditions. Do not impose one lockout process on all routine inspections.
Editorial step | Preserve original inputs, tool versions, outputs, and review evidence. Correct real work orders truthfully without inventing implementation. Separately check lawful bases, necessary scope, and permissions for identifiable personal information.
Editorial step | Actual authorized parties confirm uses. Handle electric shocks, leaks, and structural anomalies under effective shutdown, isolation, evacuation, and reporting procedures, referring out-of-scope matters. Tool instructions must not control sites.
May cause electric shock, equipment damage, injuries, and prolonged downtime
Control method:Personally verify work decisions, follow procedures and permits, document them, and identify the operator
May miss hazardous energy, medium leaks, or structural hazards
Control method:Qualified personnel must perform isolation, lockout / tagout, energy verification, and supervision on site
May violate personal-information and data-security requirements and harm stakeholders' rights
Control method:Limit purposes, retention, and access; do not upload sensitive data to external services
Distorted records affect equipment safety, traceability, and accident investigations
Control method:Records must reflect actual work; do not generate unverified content
Responsibilities cannot be defined when accidents or equipment damage occur
Control method:Before adopting tools, identify and document those responsible for work, supervision, and acceptance and the permit path
Editorial experiment suggestion, synthetic materials only: use tools in reversible supporting tasks such as retrieving manuals, drawings, and parts catalogs, organizing draft work orders and inspection records, and checking parts codes and inventory information. Disassembly, adjustment, and energized or pressurized work follow mentoring, procedures, and permits.
Editorial experiment suggestion, synthetic materials only: use digital tools for work-order dispatch and records, parts queries, equipment-ledger updates, maintenance plans, inspection routes, and preliminary fault-history and parameter-trend analysis. You remain responsible for isolation, lockout / tagout, disassembly, interpretation, and acceptance under procedures and authority.
Editorial experiment suggestion, synthetic materials only: use tools for maintenance statistics and recurrence analysis across equipment and buildings, summaries of parts, outsourcing, and cost ledgers, and training and work-instruction materials. You, specialists, and safety staff confirm complex faults, special operations, and contractor acceptance.
Editorial experiment suggestion, synthetic materials only: use tools for equipment ledgers, reliability-data analysis, knowledge bases, and standard-operating-procedure maintenance. Equipment-safety, acceptance, statutory-inspection, and accident conclusions require human approval and documentation.
This page cannot determine either direct AI replacement or no replacement. Check technical experiments, site adoption, and employment outcomes separately; tools create no work authority.
Source:O*NET 49-9071.00: tasks and work contextOriginal material ↗
This page has not obtained a survey of coding requirements across all roles. Mentions of 15 software items in 2025 advertisements can guide checks of target recruitment, but cannot establish that coding is generally unnecessary or which skill is more useful.
Source:O*NET2025 associated software mentions in recruitmentOriginal material ↗
Editorial experiment suggestion | First use synthetic work orders to check accuracy, time spent, and review costs for record drafts and retrieval outputs. This page has no ranking of tasks by AI impact; experiments must not control real equipment.
Source:O*NET task context; experiments are editorial suggestionsOriginal material ↗
BLS2025—2035 projects employment of +4.2% and 148,700 annual openings from growth and replacement needs. This is not an AI-effects estimate or actual recruitment.
Source:BLS2025—2035 Employment ProjectionsOriginal material ↗
AI creates no work qualifications, organizational authority, or acceptance powers. Check specific site-work conditions against jurisdictional lists and organizational rules; appropriate personnel judge and accept responsibility. Synthetic work orders or retrieval outputs cannot be executable operational instructions.
Source:NIST AI RMF: governance principlesOriginal material ↗
Existing sources provide no year when the job will disappear. BLS projections are neither an AI-replacement timetable nor an individual-outcome commitment.
Source:BLS Employment Projections are not a disappearance timetableOriginal material ↗
Editorial learning suggestion: first complete the G1 synthetic-material check to understand readings, records, and escalation. Learn actual operations separately under training, jurisdictional qualifications, and organizational authority.
Source:O*NET task context; learning is an editorial suggestionOriginal material ↗
Summary | Test record organization and retrieval with synthetic materials and record accuracy, time spent, and review costs. Software mentions in advertisements are not adoption, task exposure is not job outcomes, and tools cannot replace qualifications and permits.
Insufficient evidence: mainland China sources consulted on this page provide no national occupational wage distribution precisely matching U.S. O*NET / SOC 49-9071.00. The National Bureau of Statistics publishes average wages by industry sector, not occupation. This page does not substitute industry averages, recruitment offers, or U.S. data.
Insufficient evidence: mainland China sources consulted on this page provide no national occupational wage distribution precisely matching U.S. O*NET / SOC 49-9071.00. The National Bureau of Statistics publishes average wages by industry sector, not occupation. This page does not substitute industry averages, recruitment offers, or U.S. data.
Insufficient evidence: mainland China sources consulted on this page provide no national occupational wage distribution precisely matching U.S. O*NET / SOC 49-9071.00. The National Bureau of Statistics publishes average wages by industry sector, not occupation. This page does not substitute industry averages, recruitment offers, or U.S. data.
Mainland China section | Check qualifications by specific work, jurisdiction, and current lists. Work included in the Ministry of Emergency Management's special-operation list requires training, assessment, and certification. Order 19 took effect on June 1, 2026; operator certificates are valid for 6 years and renewed under the rules. Construction and market-regulation special-equipment personnel qualifications require separate checks and are not automatically mutually recognized. Industrial and trading enterprises' confined spaces follow approval, training, and dedicated-supervision requirements under Order 13, not one universal special-operation certificate. Check qualifications, organizational authority, and each work permit separately. National Bureau of Statistics industry averages and broad-category enterprise compensation surveys consulted on this page provide no national occupational wage distribution precisely matching 49-9071. Industry averages, recruitment offers, and U.S. wages are not substituted.
| Educational background | Common role directions | Notes and checking suggestions |
|---|---|---|
| Typical U.S. entry: high-school or equivalent education and moderate-term on-the-job training | Typical U.S. statistical description, not China's threshold | BLS2025—2035 Table 1.2 lists typical high-school or equivalent education and moderate-term on-the-job training. O*NET Job Zone Three is a general occupational-group description; education responses are 63% postsecondary certificate, 25% high school, and 7% some college. Do not infer thresholds for all employers. |
| Check qualifications, validity, and renewal against applicable work lists and jurisdiction | Mainland China: check the specific work list | Ministry of Emergency Management Order 19 took effect on 2026-06-01. Listed work requires training, assessment, and certification; operator certificates are valid for 6 years and renewed under the rules. Industrial and trading enterprises' confined spaces follow approval, training, and supervision under Order 13. Check construction and market-regulation special-equipment qualifications separately. |
| Apprenticeship and on-the-job mentoring | Check the role and program | O*NET lists seven registered apprenticeship directions, including building maintenance, industrial maintenance, and pipe corrosion protection. Program availability does not mean all roles require apprenticeship; check mentoring and assessment by program. |
| Equipment- or system-specific certification and continuing education, where applicable | Advanced and specialized roles | HVAC, refrigeration, electrical, boiler, lubrication, and reliability directions have corresponding certification or qualification requirements. Organizational authority, work permits, and ongoing safety training are separate steps. |
Statistical note | Chinese sources provide industry averages or broad job-category materials; this page obtained no precise occupational distribution. U.S. wages use the 2025 national employee basis, while BLS2025—2035 job projections include self-employment; keep them separate. See the table below for U.S. occupational wage medians by industry. Do not infer individual earnings or causes of wage differences from national percentiles.
Building-property and rental-property maintenance and repair roles generally fall in this industry sector. The National Bureau of Statistics publishes average wages for employees in urban entities by industry, not occupation; this page does not substitute that industry average for this occupation's wages.
Factory and production-facility maintenance and equipment-repair roles generally fall in manufacturing. These are industry averages, not this occupation's wages, and this page does not use them as substitutes.
Public-building and facility operations roles may fall in public administration, education, health, or other sectors. These are industry averages, not this occupation's wages, and this page does not use them as substitutes.
AI boundaries | No precise exposure score or site-adoption effects were obtained. Synthetic work-order organization is only an experiment suggestion, not a substitute for qualifications, authority, and permits.
| Median hourly wage $23.84 / median annual wage $49,590 (2025, BLS OEWS, 49-9071.00) |
| Official annual wages, not individual take-home pay |
| The median of $49,590 is the distribution midpoint, not individual take-home or starting pay. |
| 90th percentile | 90th-percentile annual wage $77,180 (2025, BLS OEWS, 49-9071.00) | Official annual wages, not individual take-home pay | The 90th percentile of $77,180 is only an upper national-distribution position, not a figure for specific seniority, hours, area, or qualifications. |
|---|
Pay · 10th percentile：Median hourly wage $23.84 / median annual wage $49,590 (2025, BLS OEWS, 49-9071.00)；Basis | U.S. national median for 49-9071.00 (2025, BLS OEWS, presented through O*NET). Limits | The median is the distribution midpoint, not starting pay or a figure for any organization, area, or industry. OEWS excludes overtime premiums, benefits, and other excluded items and includes some allowances and production bonuses.
Pay · 25th percentile：10th-percentile annual wage $35,350 (2025, BLS OEWS, 49-9071.00)；Basis | The U.S. 2025 10th-percentile annual wage for 49-9071 is $35,350. Limits | A national employee-distribution position, not starting pay, seniority, hours, or area.
Pay · Median：25th-percentile annual wage $40,840 (2025, BLS OEWS, 49-9071.00)；Basis | The U.S. 2025 25th-percentile annual wage for 49-9071 is $40,840. Limits | A national employee-distribution position, not starting pay, seniority, hours, or area.
Pay · 75th percentile：75th-percentile annual wage $62,620 (2025, BLS OEWS, 49-9071.00)；Basis | The U.S. 2025 75th-percentile annual wage for 49-9071 is $62,620. Limits | A national employee-distribution position, not starting pay, seniority, hours, or area.
Pay · 90th percentile：90th-percentile annual wage $77,180 (2025, BLS OEWS, 49-9071.00)；Basis | The U.S. 2025 90th-percentile annual wage for 49-9071 is $77,180. Limits | A national employee-distribution position, not starting pay, seniority, hours, or area.
Distribution interpretation | National wages from the 10th to the 90th percentile are $35,350 to $77,180, with a median of 49,590. See same-occupation industry groupings for industry wages; percentile spans cannot establish seniority or area causes.
OEWS basis | Wages include commissions, production bonuses, and some allowances and exclude overtime premiums, nonproduction bonuses, stock bonuses, and employer benefit costs. Self-employment income is not covered.
Seniority interpretation | No wages grouped by seniority were obtained. Do not equate high percentiles with senior, certified, or high-responsibility roles.
Usage suggestion: consider median, percentile, and employment figures together and check local industry, facility type, and qualification requirements. You can also query the official O*NET wage page by area and period. Do not infer individual compensation from one figure.
| Industry | Median wage for this occupation within the industry | How to interpret |
|---|---|---|
| Real Estate and Rental and Leasing | $48,360 / year (2025, occupational industry median) | BLS OOH: real estate and rental and leasing account for 20% of this occupation's employment in 2025. Its occupational wage median in this industry is $48,360 in May 2025. |
| Manufacturing | $61,500 / year (2025, occupational industry median) | BLS OOH: manufacturing accounts for 13% in 2025. The occupational wage median in this industry is $61,500 in May 2025. |
| Government, excluding state and local education and hospitals | $51,160 / year (2025, occupational industry median) | BLS OOH: this government scope accounts for 12% in 2025, with an occupational industry wage median of $51,160 in May 2025. Excludes state and local education and hospitals. |
| Remaining industries: 55% is an arithmetic remainder | Insufficient evidence: this page has not obtained an occupational wage median for this combined remainder. | 100−20−13−12=55%, the arithmetic remainder outside the three main industries. OOH separately lists accommodation and food services at 8% and educational services at 8%; do not treat 55% as an independent source industry category. |
Checking suggestion: compare medians for the same year and occupation across industries; do not treat industry differences as individual income effects.
Checking suggestion: ask about the specific area, hours, and living costs. National percentiles cannot establish local starting pay.
Checking suggestion: check shifts, qualifications, and pay terms separately. This page has no causal research on their wage effects.
Basis | BLS2025—2035 Table 1.2 reports 1,621,800 base-year jobs, including self-employment, 0.9% in 2025. Limits | OEWS covers employee wages and excludes self-employment； EP job projections are not current vacancies.
Basis | BLS Employment Projections (2025—2035, approximately +4% for this occupation, checked directly against BLS Table 1.2). Limits | A projection, not actual recruitment, and not applicable to other jurisdictions.
Basis | BLS Employment Projections period openings: approximately 148,700 annually during 2025—2035, including growth and replacement needs, checked directly against BLS Table 1.2. Limits | Includes replacement needs and must not be read as net new jobs.
Which Holland interest types are closer to general maintenance and repair?
Holland (RIASEC) | Use it to understand relative Realistic and Conventional preferences. This occupation's O*NET interest code is RC (Realistic—Conventional): willingness to operate, maintain, and repair equipment and structures hands-on (Realistic) and complete checks and records under procedures, processes, and standards (Conventional). This aligns with its balance of site work, inspection, repair, and records and the importance of inspecting equipment, structures, or materials, 87; repairing and maintaining mechanical equipment, 83; and evaluating information for compliance with standards, 75. Questionnaires only raise questions; they do not determine suitability or job readiness.
Do not use it this way:If you struggle to follow standards in noisy, dirty environments with temperature differences or maintain isolation, lockout / tagout, and review steps under pressure and urgency, a high interest score cannot change that practical cost. Confirm special-operation qualifications, organizational authority, and work permits.
Test my Holland career interestsWhich Big Five traits are more relevant to this work?
Big Five personality | This page has not obtained assessment-validity research for this occupation. Reflect on complete reading checks, communication within authority, and accepting corrections; do not infer adjustment or performance from scores.
Do not use it this way:Do not use a personality assessment saying you are unsuitable as a reason to give up or avoid entry. Check through practical training, shadowing, simulated tasks, mentor evaluations, and safety-training assessments.
View my Big Five personality traitsCan MBTI determine whether general maintenance and repair suits me?
MBTI | Typology supports reflection on communication and work preferences. This occupation requires procedural communication and collaboration with user departments, supervisors, coworkers, contractors, and residents or customers; preferences do not determine competence.
Do not use it this way:Use types only as a communication-style reference, not to infer whether you or others can interpret site conditions, work safely, and accept work well.
Understand my MBTI preferencesCan the Enneagram establish whether this occupation suits me?
Enneagram | Observe responses during emergency repairs, equipment accidents, and injury risks. With electrical risks, leaks, structural anomalies, or injuries, stopping equipment, isolating, and reporting rather than recklessly starting work matters more than type labels.
Do not use it this way:Do not explain work errors or conflicts through type labels. Return to whether isolation, protection, interpretation, tool use, and records were adequate.
Explore my Enneagram patternsCan I become a general maintenance and repair worker if I am weak at math?
Intelligence and reasoning | Observe chart reading, unit checking, and explanation of evidence. No occupation-specific validity evidence for IQ assessments was obtained; they cannot replace skill training.
Do not use it this way:High or low scores do not establish whether you can learn site interpretation and hands-on repair. Test through practical training, shadowing, simulated tasks, and mentor evaluations.
Understand my intelligence and reasoning performanceDo general maintenance and repair workers need high emotional intelligence?
Emotional intelligence | Reflect on communication, accepting corrections, and seeking help under pressure. No occupational EQ validity evidence was obtained; do not infer equipment safety from scores.
Do not use it this way:Observation suggestion | Record whether you truthfully report unknowns and insufficient authority; do not infer assessment-score effects.
Understand my emotional-intelligence skillsBetter fit:Able to complete routine maintenance and repairs across systems within qualifications and authority, using procedural isolation, protection, and acceptance
Note:This occupation is not recommended if you struggle to follow standards amid noise, temperature changes, and dirt or are unwilling to follow shutdown, isolation, and review steps.
View related careers:This occupation: general maintenance and repairBetter fit:Skills in production-equipment machinery, drives, hydraulic and pneumatic diagnosis, repair, and alignment
Note:This direction is not recommended if you prefer routine maintenance across building and facility systems rather than in-depth production-equipment repair.
View related careers:Industrial machinery mechanics and maintenance directionBetter fit:Skills in HVAC and refrigeration testing, repair, commissioning, and refrigerant management
Note:This direction is not recommended if you are unwilling to accept refrigerant and environmental-compliance requirements and specialist certification.
View related careers:HVAC and refrigeration mechanics directionBetter fit:Skills in pipe installation, pressure testing, clearing, and leak diagnosis
Note:This direction is not recommended if you prefer routine maintenance across systems rather than specialist piping-contract work.
View related careers:Plumbing and pipefitting directionBetter fit:Skills in electrical safety, wiring and control-circuit installation, repair, and testing
Note:This direction is not recommended if you are unwilling to accept electrical-safety, energized-work, and permit requirements.
View related careers:Electrician directionBetter fit:Skills in maintenance scheduling, safety, quality, outsourcing, and acceptance management
Note:This direction is not recommended if you prefer hands-on work rather than scheduling, safety, and acceptance-management duties.
View related careers:First-line mechanical installation and repair supervision directionWhat personality is better suited to general maintenance and repair? This occupation places more weight on site interpretation, hands-on skills, rigorous adherence to procedures and checklists, tolerance and stability amid noise, temperature changes, and dirt, and willingness to accept responsibility for others' safety and equipment outcomes than on a personality type. O*NET gives RC (Realistic—Conventional), with work styles emphasizing attention to detail and dependability as exploration starting points.
Can introverts do this? This page has no occupational-validity evidence for an introversion advantage. Observe clear problem reporting and checks of readings and authority; do not screen by personality.
Can extroverts do this? This page has no occupational-validity evidence for an extraversion advantage. Likewise observe complete records, handover, and help-seeking.
This round obtained no predictive-validity evidence for MBTI types in this occupation and assigns no best type. Actual site skills require formal training, assessment, and authority checks.
Which Holland interest types better suit this occupation? O*NET gives RC: Realistic, hands-on operation, maintenance, and repair of equipment and structures; and Conventional, checks and records under procedures, processes, and standards. Use it to explore task preferences, not predict performance.
This page has no personality- or interest-assessment validity research for this occupation and does not predict performance from scores. G1 only observes this information-checking task; real skills require separate training and assessment.
Can I do this if I am weak at math? First check units, dates, and costs in G1. Real measurements and calculations require separate training; no ranking of mathematics versus patience is made.
Observe clear communication, accepting corrections, and help-seeking under pressure. This page has no occupational EQ validity evidence and does not use scores or general skill descriptions as hiring thresholds.
Can the Enneagram tell me whether I am suited? No. It is a self-exploration tool, not an occupational-ability or fit conclusion. Assess fit through safe checking, disassembly, trial operations, records, and escalation within qualifications and authority.
How can work samples support observation? Complete the three G1 paper tables, check two dates, 4 mm / s, and 310 yuan, and report unknown stored energy, parts compatibility, and permits. This cannot establish site competence.
Main roles：You, safety, and work-permit roles; you, others, and equipment
Possible consequences：Unconfirmed hazardous energy or work conditions, or missing listed qualifications, authority, permits, protection, or supervision, may cause injury or equipment damage.
Reduce risks：Trained authorized personnel confirm hazardous energy and site conditions under actual procedures. Apply servicing isolation and lockout where covered. Follow shutdown, evacuation, and reporting procedures if qualifications, protection, or supervision are insufficient; not all repairs equal one operator certificate.
Basis：O*NET tasks and context for this occupation · Ministry of Emergency Management Order 19
Typical scenario：Editorial scenario | A work order claims repair is complete, but original readings conflict with trial-operation results and the cause is unconfirmed. Keep it open and refer it to appropriate personnel for review.
Main roles：You, supervisors, and quality roles; equipment and facility users and the organization
Possible consequences：Incorrect fault interpretation, inappropriate replacement or adjustment, or inadequate trial operation and acceptance may cause equipment damage, downtime, recurrence, secondary accidents, and higher costs
Reduce risks：Inspect, interpret, and disassemble under manuals, drawings, and procedures. After restoration, trial-run and accept against standards and record recurrence tracking. Pause conflicting interpretations or data, review them, and seek specialist confirmation.
Basis：O*NET tasks and context for this occupation · China's Work Safety Law
Typical scenario：Editorial scenario | A critical maintenance step has no original record, and you are asked to mark it complete. Only truthfully mark it unknown or correct under rules; do not invent work.
Main roles：You, equipment management, and safety roles; the organization, users, and stakeholders
Possible consequences：False, missing, fabricated, or backdated work-order, inspection, parts, change, and acceptance records, or unclear outsourcing and acceptance, affect equipment management, traceability, accident investigations, and cost allocation
Reduce risks：Records must be prompt and truthful. For gaps or errors, identify the person, date, and basis under organizational rules, retain originals, and supplement or correct. Do not fabricate, backdate, impersonate signatures, or conceal unperformed work.
Basis：China's Work Safety Law · O*NET tasks and context for this occupation
Typical scenario：Editorial scenario | Someone requests resident identities, access-control records, and surveillance screenshots in an unauthorized group chat. Check lawful bases and permissions and report through procedures.
Main roles：You, information, and security roles; residents or customers and the organization
Possible consequences：Leaks, unauthorized access, or external provision of access-control, surveillance, resident or customer information, or equipment-operation data may violate personal-information and data-security requirements and harm stakeholders' rights
Reduce risks：Manage facility data by minimum necessity, permissions, and retention. External provision or remote access requires approval and documentation. Immediately report unauthorized access or leakage and respond through procedures.
Basis：China's Personal Information Protection Law · O*NET tasks and context for this occupation
Typical scenario：Scenario | The only colleague familiar with a building's equipment and valve locations is on leave, and the team is told to have them guide by telephone while untrained staff temporarily cover inspections.
Main roles：You, duty staff, and the team; equipment and facility users
Possible consequences：A critical piece of equipment or building depends on one person, interrupting repairs during leave, fatigue, or simultaneous calls at multiple sites and potentially delaying emergency repairs and worsening faults and safety risks
Reduce risks：Establish duty coverage, backups, and priority rules, prioritize emergency and safety-related requests, and make key equipment materials, keys, and parts ready for handover. Report staffing or parts shortages under procedures and adjust priorities; do not work fatigued or inadequately protected.
Basis：O*NET tasks and context for this occupation · China's Work Safety Law
Typical scenario：Scenario | A contractor requests settlement after repairs without trial operation or acceptance, and the site is told to sign off first and add checks and records later.
Main roles：You, contractors, and safety roles; the organization, equipment, and personnel safety
Possible consequences：Unclear outsourcing, site oversight, delivery, acceptance, or cost changes, or mismatched expectations with user departments, may cause rework, cost disputes, unclear safety responsibility, and longer downtime
Reduce risks：Outsourced work must specify scope, qualifications, safety requirements, acceptance criteria, and cost-change rules, with site oversight and documentation. Confirm conclusions communicated to user departments. Pause, review, and report handover or acceptance disputes.
Basis：O*NET tasks and context for this occupation · China's Work Safety Law
| Career direction | Starting tasks | Evidence to prepare | Work samples you can show without experience | Distinction from this occupation |
|---|---|---|---|---|
| Industrial machinery mechanics, maintenance workers, and millwrights | Production-equipment repair shadowing, lubrication, and tightening | Vocational training, apprenticeship, or practical-training records | A fictional production-equipment preventive-maintenance and inspection checklist | Industrial machinery mechanics focus on industrial production and processing machinery. This occupation also covers machinery and buildings, emphasizing two or more maintenance skills; settings are not mutually exclusive. |
| HVAC and refrigeration mechanics and installers | Air-conditioning and refrigeration installation shadowing and cleaning | HVAC training or apprenticeship and refrigerant-management training records | A fictional outline of air-conditioning system testing and maintenance | Produces HVAC and refrigeration installation and commissioning, requiring specialist qualifications and refrigerant compliance |
| Plumbers, pipefitters, and steamfitters | Pipe prefabrication and installation support | Plumbing training or apprenticeship records | A fictional outline of pipe installation and pressure testing | Plumbing occupations focus on piping systems. This occupation also has pipe-repair tasks; check specific authority by jurisdiction and operation. |
| Electricians | Shadowing distribution and wiring maintenance | Electrician qualification training and practical-training records | A fictional outline of wiring checks and insulation and grounding tests | Produces electrical installation, maintenance, and code compliance, requiring electrician qualifications and permits |
| Stationary engineers and boiler operators | Boiler-room inspection and parameter-recording support | Boiler and power-operation training and certification records | A fictional outline of boiler operating parameters and blowdown inspections | Produces boiler and power-system monitoring and duty coverage, requiring certification and shift attendance |
In mainland China, check qualifications by specific work, jurisdiction, and current lists. Work included in the Ministry of Emergency Management's special-operation list requires training, assessment, and certification. Order 19 took effect on June 1, 2026; operator certificates are valid for 6 years and renewed under the rules. Construction and market-regulation special-equipment personnel qualifications require separate checks and are not automatically mutually recognized. Industrial and trading enterprises' confined spaces follow approval, training, and dedicated supervision under Order 13, not one universal special-operation certificate. Check qualifications, organizational authority, and each work permit separately.
Check education, training, qualifications, hiring, authority, and acceptance signatures separately. G1 creates no work authority.
Check health surveillance and equipment inspections against exposure, equipment type, and applicable laws; an authority's home page is not a specific procedure.
Access-control, resident, and customer personal information require lawful bases, minimum necessity, and authorization. Whether equipment data involve personal information depends on their content.
E01 original record R1 shows vibration of 0.004 m / s, transcribed in R2 as 0.4 mm / s. The exercise paper limit is 3.0 mm / s, not a real engineering threshold. The cause is unknown, with no diagnosis or trial-operation result. E02 has an inspection plan only, with no actual result.
Parts list: E01 plans two F-A items at 80 yuan each; only F-B is in stock, with compatibility unverified. Planned labor is 1 unit × 150 yuan, with a total budget of 300 yuan. All quotations are synthetic; make no purchase.
Authority sheet: E01 is marked as power disconnected, but stored-energy confirmation is blank, the work permit is unapproved, and additional budget is unapproved. Q is the approval lead; T is site personnel whose applicable qualifications and organizational authority must be checked. The exercise provides no Q approval or T site confirmation.
Draw three blank tables: first, equipment / previous date / cycle / due date / status; second, a work-order draft with original readings, conversions, parts, planned costs, and unknowns; third, matter / report recipient / conditions awaiting verification / whether it can close. No external template is needed.
Paper, pen, calculator, and timer; 60-minute limit. No tools, real work orders, actual measurements, external experts, or organizational materials are needed.
The work order must say draft, no work performed. Record unknown F-B compatibility, stored energy, permits, extra costs, and fault causes. Refer verification items to Q / T; do not state repaired, passed, or returned to operation.
Identify self-check or peer-check and reasons for changes; do not fabricate mentor signatures.
Keep items open when approval, site confirmation, and results are not provided. Do not mark work complete.
Record checker, date, original values, and changes. Attach professional feedback if available; invent none.
Site competence requires formal training and assessment. Paper materials do not prove repairs were performed.
Synthetic identifiers contain no real facility or identifiable personal information.
State no work performed, unapproved, and undiagnosed. Do not claim replacement or successful acceptance.
Explain who reviewed tool outputs and which original-material check occurred before use.
If readings, parts specifications, or interpretations are examples, label them and explain that appropriately qualified personnel provide final confirmation.
| Stage | Possible points to check | Observable evidence | Boundary note |
|---|---|---|---|
| Resume and initial screening | Vocational training or apprenticeships, applicable qualifications' validity and renewal, equipment- or system-specific certifications, and duty and emergency-repair experience | Training, qualification, applicable renewal, and practical-training records | Self-assessment cannot replace statutory qualifications or competent-authority verification |
| Interview | Understanding isolation, lockout / tagout, hazardous energy, permits, and matters beyond authority | Live judgments on electrical shock, leaks, heights, and matters beyond scope |
List reasons to check qualifications, authority, and permits separately.
Write one work cost to investigate further, not a personal-ability conclusion.
Add the maintenance plan without marking it executed.
State that limits and quotes are fictional and the fault cause unknown.
Complete the Q / T escalation table and conditions awaiting verification without site drills or inventing two discrepancies.
| Qualification or preparation item | Applicable group | Role in this occupation | Universally required? | Conditions for obtaining it | Approximate commitment | Limitations |
|---|---|---|---|---|---|---|
| High-school or equivalent education and on-the-job training | Typical U.S. entry description | Typical BLS statistical conditions | Not a uniform threshold for every role | Check target employer requirements and training | Check the program; no uniform duration |
Typical duties：Inspect along routes, record readings, replace filters, and report anomalies under supervision; do not independently accept hazardous-work or acceptance responsibility.
Promotion evidence：Inspection records, anomaly reports, and review comments; ability to explain isolation, protection, and reporting essentials.
Qualification boundaries：Vocational education or training records; organizational safety training and assessment.
Next step：Learn equipment lists, inspection routes, reading interpretation, and work-order completion and record daily learning points.
Typical duties：Independently perform preventive maintenance, inspections, reading interpretation, common replacements, and adjustments and report anomalies.
Promotion evidence：Maintenance, inspection, and anomaly-report records and review comments.
Qualification boundaries：Obtain corresponding qualifications when actual work falls under statutory lists. Check organizational authority and the current permit separately; maintenance experience does not automatically confer powers.
Next step：Build experience across equipment, systems, and seasonal conditions and practice recognizing early faults from trends and symptoms.
Typical duties：Arrange maintenance plans, cycles, routes, parts, and staffing and review inspection and maintenance records, recurrence, and quality metrics.
Promotion evidence：Maintenance plans, quality and recurrence-analysis records, and improvement conclusions.
Qualification boundaries：Corresponding role authority; planning and quality-work records.
Next step：Learn preventive and predictive maintenance strategies, parts management, and contractor management.
Typical duties：Oversee equipment ledgers, reliability analysis, maintenance strategies, knowledge bases, and standard operating procedures, handle complex cross-system matters, and guide newcomers.
Promotion evidence：System and reliability conclusions; policy, data, and training documents.
Qualification boundaries：Corresponding professional experience or organizational appointment.
Next step：Improve reliability systems, data, parts, outsourcing, and training mechanisms.
Typical duties：Prepare, pass, clean up, and record tools and parts under supervision and learn disassembly and assembly sequences; no independent interpretation or energization authority.
Promotion evidence：Repair-shadowing, tool and parts preparation records, and review status.
Qualification boundaries：Vocational education or training records and organizational safety training; no independent work or energization authority.
Next step：Learn common fault symptoms, manual, drawing, and parts-catalog retrieval, and disassembly and assembly sequences.
Typical duties：Independently check, interpret, disassemble, replace, adjust, trial-run, and accept common faults, escalating complex or out-of-authority matters.
Promotion evidence：Work-order, interpretation, replacement, acceptance, and recurrence records.
Qualification boundaries：Obtain corresponding qualifications when actual work falls under statutory lists. Check organizational authority and the current permit separately; maintenance experience does not automatically confer powers.
Next step：Learn cross-system electrical, piping, HVAC, and mechanical judgment and fault-tree methods.
Typical duties：Inspect electrical, fire-protection, water and drainage, and HVAC systems under supervision, record hazards, and assist safe-work preparation; no independent hazardous-work authority.
Promotion evidence：Inspection and hazard records and emergency-drill participation records.
Qualification boundaries：Organizational safety and occupational-health training records; no independent hazardous-work authority.
Next step：Learn facility systems, valve, distribution, and alarm locations, emergency plans, and personal-protection requirements.
Typical duties：Independently perform routine facility maintenance, hazard remediation, alarm response, and cooperation with contractor site work and acceptance.
Promotion evidence：Maintenance, hazard-remediation, contractor-cooperation, and acceptance records.
Qualification boundaries：Obtain corresponding qualifications when actual work falls under statutory lists. Check organizational authority and the current permit separately; maintenance experience does not automatically confer powers.
Next step：Learn inter-system coordination, energy efficiency, fire protection, security, and data and network-access safety requirements.
Learn tool use, equipment, inspections, work-order completion, basic disassembly and assembly, and safety standards under supervision; do not independently accept hazardous-work or acceptance responsibility.
Editorial skill observation | Perform common repairs within actual qualifications and authority. Report and hand over out-of-scope matters or anomalies under site procedures. Qualified authorized personnel perform listed special operations under permits; the special-operation label alone does not always require shutdown.
Able to handle complex cross-system electrical, piping, HVAC, and mechanical faults, coordinate multiple buildings or machines, mentor, and implement quality and safety management.
Able to handle equipment ledgers, maintenance strategies, reliability analysis such as vibration, lubrication, and condition monitoring, parts, outsourcing, and standard-operating-procedure maintenance and guide newcomers.
What it cannot establish：Basis | BLS2025—2035 Table 1.2 reports 1,621,800 base-year jobs, including self-employment, 0.9% in 2025. Limits | OEWS covers employee wages and excludes self-employment; EP job projections are not current vacancies.
United States · SOC 49-9071.00 (OEWS 2025, presented through O*NET)
Median hourly wage $23.84, median annual wage $49,590; 10th percentile 35,350, 25th percentile 40,840, 75th percentile 62,620, 90th percentile 77,180 (dollars / year)
Wages: median and percentiles
Keep national percentiles separate from CA's annual median of 57,000 and hourly median of 27.41. Other-area, seniority, and work-model groupings were not obtained; do not infer individual starting pay.
What it cannot establish：2025 wages use the national employee basis, including commissions, production bonuses, and some allowances and excluding overtime premiums, nonproduction bonuses, stock bonuses, and employer benefit costs. Self-employment income is not covered.
Mainland China · National Bureau of Statistics average wages for employees in urban entities by industry sector and a bounded search
Insufficient evidence: mainland China sources consulted on this page provide no national occupational wage distribution precisely matching U.S. O*NET / SOC 49-9071.00. The National Bureau of Statistics publishes average wages by industry sector, not occupation. This page displays gaps without proxy figures.
Occupational wages and employment: statistical definitions and gaps
Chinese materials consulted on this page provide no precise occupational wages. Check jurisdictional work qualifications separately; U.S. wages or industry averages cannot establish individual Chinese income.
What it cannot establish：Legal settings, work qualifications, and statistical definitions differ; no splicing or conversion is made. This page's China section records only definitions and visible gaps.
These are adjacent skill relationships, not automatic promotions or routes requiring no additional learning.
Transferable：Potential foundation | Equipment knowledge, interpersonal communication, processes, and safety. Check personal experience; this does not establish all target skills.
Gaps to address：Additional facility-operation, budget, outsourcing, service-management, and compliance experience needed
View career detailsTransferable：Potential foundation | Equipment knowledge, interpersonal communication, and scheduling. Check personal experience; this does not establish all target skills.
Gaps to address：Additional scheduling, work-permit, safety, quality, and acceptance-management experience needed
View career detailsTransferable：Potential foundation | Mechanical judgment, tools, and safety standards. Check personal experience; this does not establish all target skills.
Gaps to address：Additional depth in production-equipment machinery, drives, hydraulics and pneumatics, alignment, and condition monitoring needed
View career detailsTransferable：Potential foundation | Drawings, mechanical repair, and safety records. Check specialized welding and pressure skills against personal training; not everyone in this occupation has them.
Gaps to address：Additional boiler and pressure-vessel fabrication, installation, welding, pressure-test, and statutory-inspection requirements needed
View career detailsTransferable：Potential foundation | Piping, tools, and safety standards. Check personal experience; this does not establish all target skills.
Gaps to address：Additional pipe prefabrication, pressure testing, clearing, gas, and pressure-piping code compliance needed
View career detailsTransferable：Potential foundation | Exposure to electrical maintenance and reading records. Check complete wiring and control installation skills and qualifications separately; general repair does not establish them.
Gaps to address：Additional electrical installation, repair, control circuits, energized work, and code compliance needed
View career detailsTransferable：Potential foundation | Tool preparation and passing, site cleanup, and records. Check personal experience; this does not establish all target skills.
Gaps to address：Additional standards and boundaries for supporting work under certified personnel's mentoring and supervision needed
View career detailsTransferable：Potential foundation | Tools, site safety, and physical work. Check personal experience; this does not establish all target skills.
Gaps to address：Additional pipe laying, earthwork, backfilling, pressure testing, and personnel-coordination requirements needed
View career detailsThe key distinction lies in skill breadth and authority level. This occupation combines two or more maintenance or craft skills for daily maintenance and repair of machinery, equipment, and building structures, producing verifiable inspection, work-order, and acceptance records. Industrial machinery mechanics (49-9041; maintenance workers and millwrights have separate codes) address industrial-equipment installation, preventive maintenance, diagnosis, and repair; HVAC and refrigeration mechanics and installers (49-9021) address system installation and repair and refrigerant management; plumbers, pipefitters, and steamfitters (47-2152) address water, drainage, gas, and process-piping installation and repair; electricians (47-2111) address electrical installation, repair, and code compliance; stationary engineers and boiler operators (51-8021) address boiler and power-system operation and monitoring; facilities managers (11-3013) address facility operations, budgets, outsourcing, and compliance. Different skill breadth and authority levels mean energized, pressurized, special-operation, and statutory-inspection powers cannot be carried across roles.
The U.S. 2025 median for 49-9071 is $23.84 / hour and $49,590 / year, with 10 / 25 / 75 / 90 percentile wages of $35,350 / 40,840 / 62,620 / 77,180. OEWS covers employee wages, including some allowances and production bonuses, and excludes overtime premiums, nonproduction bonuses, benefits, and self-employment. BLS2025—2035 projects 1,621,800 to 1,690,500 jobs, 4.2%, with 148,700 annual growth and replacement openings. Projections are not recruitment.
Insufficient evidence: this page has not obtained a precise Chinese occupational wage distribution. National Bureau of Statistics industry wages and broad enterprise compensation-survey categories cannot precisely match 49-9071. Industry averages, recruitment offers, and U.S. wages are not substituted.
O*NET 49-9071.00 work context shows face-to-face individual or team discussions, 90% daily; constant contact with others, 75%; telephone, 74% daily; email, 73% daily; using hands to handle, control, or feel objects and tools, 68% continually or almost continually; outdoors in all weather, 51% daily; controlled indoor environments, 60% daily; uncontrolled indoor environments, 55% daily; hazardous equipment, 44% daily; hazardous conditions, 35% daily; contaminants, 36% daily; very hot or cold temperatures, 45% at least weekly but not daily; noise, 49% daily; common protective or safety equipment, 58% daily; others' health and safety, 65% very high responsibility; consequences of error, 27% fairly serious; and typical workweek, 62% more than 40 hours. Work features frequent communication, continual hand use, outdoor, temperature, noise, and hazardous-equipment exposure, protective equipment, and common overtime.
No precise occupational AI exposure score, site adoption rate, or efficiency-effect research was obtained. Test records and retrieval with G1 synthetic materials and check accuracy, time spent, and review costs. Software mentions in 2025 advertisements are not adoption; tools create no work authority.
U.S. BLS describes typical high-school or equivalent education and moderate-term on-the-job training. O*NET Job Zone Three is a general occupational-group preparation description, not proof that all roles require an associate degree or apprenticeship. Education-survey responses are 63% postsecondary certificate, 25% high school, and 7% some college; keep surveys separate from employer thresholds. Check actual qualifications, training, and authority in China and the United States separately.
In mainland China, check qualifications by specific work, jurisdiction, and current lists. Work included in the Ministry of Emergency Management's special-operation list requires training, assessment, and certification. Order 19 took effect on June 1, 2026; operator certificates are valid for 6 years and renewed under the rules. Construction and market-regulation special-equipment qualifications require separate checks and are not automatically mutually recognized. Industrial and trading enterprises' confined spaces follow approval, training, and dedicated supervision under Order 13, not one universal special-operation certificate. Check qualifications, organizational authority, and each permit separately. O*NET's current certification directory includes Certified Maintenance Employee and Certified Building Operator; the directory is not a universally mandatory list, statutory qualification, or organizational authority.
Risk-checking suggestion: hazardous energy, abnormal readings, unknown parts compatibility, out-of-scope work, and distorted records require procedural handling under permits and authority. Records may be truthfully supplemented and traceably corrected under organizational rules, but not fabricated or backdated. Do not equate all hazardous work with one operator certificate or operate real equipment using G1 thresholds.
BLS2025—2035 projects 1,621,800 to 1,690,500 jobs, +4.2%, and 148,700 annual growth and replacement openings, not recruitment notices or AI effects. Explore industrial machinery, HVAC, plumbing, electrical, or first-line supervision, separately checking each direction's training, jurisdictional qualifications, and authority.
Materials note | Tasks and context refer to O*NET; wages use 2025 OEWS, with national percentiles not starting pay. Projections come directly from BLS2025—2035. Government industry excludes state and local education and hospitals. Chinese qualifications follow Order 19 lists separately from Order 13 industrial and trading enterprise confined-space requirements. Gaps mean only that this page's search did not obtain the information.
This round's access on 2026-10-11: O*NET updated 2026, wages 2025 OEWS, BLS projections and typical education and training 2025—2035; Order 19 took effect on 2026-06-01. Earlier shared-source access histories are preserved; new checks are not disguised as old dates.
Source register | Retains 25 stable source IDs. O*NET supports tasks, context, interests, wage display, and certification discovery; BLS supports latest employment projections and industry wages; Orders 19 and 13 support listed operator certificates and industrial and trading enterprise confined-space rules respectively. Authority portals are search navigation only. ILO potential exposure and NIST governance are not adoption effects or equipment procedures.
Usage limitations：Occupational description; does not cover mainland China's work qualifications or laws.
Usage limitations：Occupational description, not work qualifications or safety procedures.
Usage limitations：Projections include replacement needs and are not actual recruitment.
Usage limitations：Wages include commissions, production bonuses, and some allowances and exclude overtime premiums, nonproduction bonuses, stock bonuses, and employer benefit costs. Self-employment income is not covered. National percentiles do not correspond to starting pay.
Usage limitations：Industry-sector definitions do not distinguish occupations; this occupation is not separately listed.
Usage limitations：Aggregated broad job-category data; no statistical value precisely matching this occupation has been established.
Usage limitations：Subject to the original law and competent-authority interpretations.
Usage limitations：Subject to regulations and work requirements published by competent authorities.
Usage limitations：Subject to regulations and inspection requirements published by competent authorities.
Usage limitations：Subject to regulations and requirements published by competent authorities.
Usage limitations：Applies only to industrial and trading enterprises' confined spaces. Check against Order 13 and competent-authority requirements; do not extend to all settings.
Usage limitations：Task exposure does not mean jobs automatically disappear or indicate a specific adoption rate.
Usage limitations：Interest codes are occupational descriptions, not individual predictions.
Usage limitations：Not equipment-safety procedures or special-operation standards.
Usage limitations：Subject to the original methodological documentation.
Usage limitations：Official occupational context and industry wages. Projections are not recruitment; government shares exclude state and local education and hospitals.
Usage limitations：Internal definition rules, not an external factual source.
Usage limitations：The certification directory is not statutory work qualifications or organizational authority.
Usage limitations：Typical entry descriptions do not replace competent-authority and organizational credential and training requirements.
Usage limitations：Adjacent-occupation definition, not this occupation.
Usage limitations：Adjacent-occupation definition, not this occupation.
Usage limitations：Database and classification information are not a basis for work qualifications.
Usage limitations：Used to map titles to SOC, not as a basis for licensing.
Usage limitations：Technology mentions do not equal proficiency or degree of automation.
Usage limitations：Industry distribution uses U.S. definitions and establishes no mainland China mapping.
Usage limitations：Editorial ratings use the existing occupational responsibilities and AI task analysis on this page. They are not adoption rates, measured effects, job-disappearance or personal-unemployment probabilities, or official scores from Stanford or another external institution. No measured time weights or future robot deployment are assumed.
Precise Chinese occupational wages, U.S. other-area and seniority groupings, wages for the combined 55% industry remainder, AI-adoption effects, and assessment validity were not obtained. This round checked national, CA, and three OOH industry medians, CA57,000 and hourly 27.41. Missing industry references use text fallback.
Big Five personality assessment · MBTI assessment · IQ assessment · EQ assessment
| Core process | Core process of this occupation | Receive orders and check equipment, fault history, and risks; isolate and lock out / tag out and confirm released energy; inspect or diagnose and interpret symptoms and parameters; disassemble, replace, and adjust within authority; restore, trial-run, and accept against standards; record, hand over, review, and track recurrence. Document each step under organizational equipment and safety rules for supervisor, safety, and quality review. | Core processes of adjacent roles | Industrial machinery mechanics focus on production-equipment preventive maintenance, fault diagnosis, component repair, and alignment; HVAC and refrigeration mechanics on system testing, charging, repair, and commissioning; plumbers on pipe prefabrication, installation, pressure testing, and clearing; electricians on distribution, wiring, and control-circuit installation, repair, and testing; stationary engineers and boiler operators on boiler and power-system monitoring, parameter adjustment, blowdown, and shift handover; facilities managers on outsourcing tenders, service acceptance, budgets, compliance, and inspection plans. |
|---|
| Main outputs | Main outputs of this occupation | Verifiable inspection and preventive-maintenance records; work orders recording symptoms, locations, checking steps, interpretations, replacements or adjustments, parts, and acceptance criteria; isolation, lockout / tagout, and work-permit records; trial-operation, acceptance, and reinspection records; parts, outsourcing, and cost-change records; and equipment and asset-ledger updates and recurrence-tracking records. | Main outputs of adjacent roles | Industrial machinery mechanics produce production-equipment maintenance, repair, and alignment records; HVAC and refrigeration mechanics produce system testing, repair, and environmental-compliance records; plumbers produce pipe installation, pressure-test, and clearing records; electricians produce distribution, wiring, and control-circuit installation, repair, and test records; stationary engineers and boiler operators produce operating-parameter, blowdown, and shift-handover records; facilities managers produce outsourcing contracts, service-level, budget, and compliance records. |
|---|
| Responsible parties | Responsibility in this occupation | This occupation is responsible for personally completed checks, interpretation, disassembly, replacement, adjustment, trial operation, acceptance, and records and for procedural isolation, lockout / tagout, protection, and permits. Appropriately qualified personnel, contractors, and safety and equipment-management departments decide under organizational rules on special operations such as energized, pressurized, high-place, confined-space, and hot work; construction, statutory inspections, and equipment alterations beyond personal qualifications or authority; and major equipment accidents, injuries, and facility-data leaks. This occupation does not replace their decisions. | Responsibility in adjacent roles | Responsibilities in the same group and adjacent roles are usually defined by the organization, personal qualifications, delegated authority, and safety procedures and generally concern equipment and facility users, coworkers, organizations, and public safety. |
|---|
| Authority and approval | Authority and approval in this occupation | Inspections, diagnosis, disassembly, replacement, adjustment, trial operation, and acceptance must remain within personal qualifications, organizational authority, and work permits. Energized, pressurized, high-place, confined-space, and hot work; equipment alterations, structural changes, and statutory inspections; outsourcing contracts, acceptance, and external data connections require approval from appropriately qualified people or organizations or referral under organizational rules. Do not work without required certificates, exceed authority, or make unauthorized changes. | Authority and approval in adjacent roles | Authority in the same group and adjacent roles comes from personal qualifications, organizational delegation, and safety procedures. It generally does not include independently deciding on work, construction, or inspections beyond qualifications or authority. Special operations, statutory inspections, equipment alterations, and external data connections should be referred to appropriately qualified people or organizations. |
|---|
| Limits on conclusions | Limits on conclusions in this occupation | Repair conclusions state only verifiable symptoms, parameters, disassembly, replacements, and trial-operation facts, distinguishing resolved issues, observation needs, and specialist work. Do not issue unauthorized judgments or commitments beyond qualifications or authority, such as special-operation compliance, statutory inspection, structural safety, or engineering acceptance. Electrical shock, leaks, structural anomalies, recurrence, and suspected accidents require shutdown and escalation or referral. Descriptions must withstand review by supervisors, safety, quality, contractors, and regulators. | Limits on conclusions in adjacent roles | Conclusions in the same group and adjacent roles are generally limited to the equipment, organization, and individual's work scope and usually do not establish equipment safety, statutory inspection findings, or engineering quality. Cross-specialty, statutory-inspection, and accident-assessment conclusions have scope limits. |
|---|
Checking suggestion: check health surveillance, protection, and training against specific work risks. Do not treat an authority's portal as a universal medical-examination threshold. Check listed qualifications' validity and renewal under applicable rules.
U.S. BLS describes typical high-school or equivalent education and moderate-term on-the-job training. O*NET Job Zone Three is a general occupational-group description and cannot establish one threshold for most roles in this occupation. Education-survey figures of 63% postsecondary certificate, 25% high school, and 7% some college have a separate survey basis.
Checking suggestion | In O*NET workweek responses, 62% report more than 40 hours. These context responses establish neither local shift patterns nor income components. Confirm hours, on-call duties, overtime pay, and allowances item by item with the target employer in writing.
Checking guidance | Interfaces with user departments, dispatch, parts purchasing, contractors, safety, and equipment management define responsibility boundaries for repair, acceptance, costs, and safety and must be clarified beforehand.
Checking guidance | Traceability and documentation requirements for work orders, inspections, parts, changes, acceptance, locks, and permits define repair, safety, cost, and responsibility boundaries. Clarify templates, deadlines, amendments, archiving, permissions, and retention beforehand. Access-control, surveillance, resident, and customer information also follow personal-information requirements.
Work context emphasizes hazardous equipment, 44% daily; hazardous conditions, 35% daily; outdoors in all weather, 51% daily; common protective or safety equipment, 58% daily; using hands to handle, control, or feel objects and tools, 68% continually or almost continually; responsibility for others' health and safety, 65% very high responsibility; and typical workweek, 62% more than 40 hours.
Interest and work-style data are for self-questioning only and do not establish hiring or performance conclusions.
Actual measurement, disassembly, and trial operation require training under qualifications, authority, and procedures. This page gives no operating steps.
Tools and software create no statutory qualifications, permits, or acceptance authority.
Distinguish facts, calculations, and assumptions. Check at least unit transcription, unknown parts, and unapproved permits; do not invent a second fault.
15–30 minutes: 0.004 m / s×1000=4 mm / s. R2's 0.4 is 1 / 10 of the original reading, a difference of 3.6 mm / s. Against the exercise limit of 3.0, it exceeds the limit by 1.0 mm / s, approximately 33.3%. This is only a paper-limit exceedance; the cause remains unknown.
30–45 minutes: 2×80+1×150=310 yuan, 10 yuan over budget (approximately 3.33%). Stock F-B differs from specified F-A and compatibility is unknown; do not assume substitution. Refer additional costs to Q for approval.
45–60 minutes: self-check or peer-check the three tables. Stored-energy confirmation is blank and the permit unapproved; do not mark site repairs or return to operation complete. Report to Q and refer to T to check applicable qualifications, site energy, and conditions; retain open matters and original values.
The three tables show only this paper check; they do not establish equipment safety, site competence, certification, or authorization.
| Scenario answers cannot replace safety training and qualification assessments |
| Practical or scenario test | Tool use, measurement, interpretation, disassembly and assembly sequence, and acceptance criteria | Practical scores and work-order and acceptance-record designs | Scenario tests do not equal independent work and acceptance ability |
|---|
| Onboarding and probation | Following qualifications, authority, permits, protection, work-order records, and reporting rules | Work-order, permit, protective-equipment issue, and reporting forms | Applicability and authority follow statutory qualifications, organizational authorization, and assessment |
|---|
Completion requires no external expert; do not fabricate feedback or site confirmation.
If continuing, investigate target-jurisdiction training, qualification validity and renewal, and organizational authority. A seven-day exercise does not establish site competence.
| Consider O*NET surveys and general Job Zone descriptions separately; education creates no authority |
| Special-operation certificate under the applicable list | Those performing actual listed work in mainland China | Statutory qualification for listed work | According to the specific list and jurisdiction | Certification after training and assessment; Order 19 certificates are valid for 6 years and renewed under the rules | Check competent-authority arrangements | Check construction and market-regulation special-equipment qualifications separately; confined-space training is not one universal certificate |
|---|
| Apprenticeship or on-the-job mentoring | According to role and program | Practice skills and procedural work | Registered apprenticeship is not mandatory for all roles | Check actual programs, mentoring, and assessment | Check the program | Does not replace statutory qualifications or organizational authority |
|---|
| Equipment- or system-specific certification | According to target direction | Provides evidence of relevant skills | Depends on awarding-body and employer requirements | Check the awarding body's current eligibility requirements | Check the program | O*NET's certification directory is not a mandatory list or operating authorization |
|---|
| Safety, occupational-health, and emergency training | According to role risks and jurisdiction | Builds procedural and emergency preparedness | According to applicable laws and role | Check applicable training, refresher, and supervision requirements | According to legal and organizational arrangements | Check confined-space training, approval, and supervision requirements for industrial and trading enterprises separately |
|---|
| Organizational authority, work permits, and system permissions | According to role duties | Defines actual work and record scope | According to organizational rules and each operation | Complete corresponding training and assessment and check authority | According to organizational arrangements | Obtaining one does not automatically grant all work or acceptance powers |
|---|
Typical duties：Handle complex, difficult, and cross-system faults and be responsible for retaining diagnostic methods, mentoring, work-order quality, and safety implementation.
Promotion evidence：Complex-fault responses, root-cause conclusions, and mentoring records.
Qualification boundaries：Corresponding role authority; mentoring and assessment records.
Next step：Learn root-cause analysis, vibration, lubrication, condition-monitoring methods, and equipment improvement.
Typical duties：Coordinate repair standards, work-order quality, parts, contractor technical reviews, and recurrence statistics, handle disputes and technical support, and guide newcomers.
Promotion evidence：Standards, quality, and outsourcing conclusions; policy, training, and review records.
Qualification boundaries：Corresponding professional experience or organizational appointment.
Next step：Improve standards, knowledge bases, outsourcing, and quality mechanisms.
Typical duties：Be responsible for work permits, isolation and lockout / tagout, safety education, contractor safety oversight, facility-hazard management, and emergency organization.
Promotion evidence：Safety, permit, outsourcing, and emergency-response conclusions; policy, training, and review records.
Qualification boundaries：Corresponding safety-management experience or organizational appointment.
Next step：Improve safety systems, permits, emergency response, outsourcing, and review mechanisms.
Typical duties：Coordinate facility operations, maintenance, safety, outsourcing, budgets, and compliance, handle complex and disputed matters, and advance improvements.
Promotion evidence：Coordination conclusions; policy, performance, emergency-response, and training documents.
Qualification boundaries：Corresponding management appointment or organizational authorization.
Next step：Improve systems, data, emergency response, assessment, and training mechanisms.
