What it pays
Government survey numbers — not estimates, not ads.
Half of all Installation, Maintenance, and Repair Workers, All Other in the U.S. earn more than $49,230 a year — the middle 80% land between $36,080 and $77,040. About 176,300 people in the U.S. do this work. Figures are for the U.S. occupation group “Installation, Maintenance, and Repair Workers, All Other”. (U.S. Bureau of Labor Statistics survey, published 2025.) In India, Craft and related trades workers earn about ₹16,825 a month on average — around ₹2.0 lakh a year (government PLFS survey via ILOSTAT, occupation-family figure).
$49,230typical pay / year
176,300people in this work
$77,040+top 10% earn
₹2.0 lakha year in India (family avg)
Think you get this job?Six quick questions on how it really works — with a hint and the reason behind every answer.
Test yourself →The work, task by task
These are the real jobs-to-be-done, not a wish list. Each task shows where we found it, and the prompt underneath is written for that exact task.
Fixing1
Install, test, and maintain geothermal heat pumps
+Install the ground-source heat pump system at North Field digesters, pressure-test the loop to 5 bar,…
Install, test, and maintain geothermal heat pumps
+Install the ground-source heat pump system at North Field digesters, pressure-test the loop to 5 bar, commission the circulation pumps and controls, verify electrical earthing and lockout, then run a 24-hour performance soak and log temperatures every hour.
The tools that do the workThermal Dynamics Ground Loop Design GLDDistributed control system DCSESCOjob descriptionsO*NET
Pasted it? Good. When the reply comes back, push once: ask it to sharpen the weakest part. — Did this prompt help?
Keeping the record1
Prepare and maintain logs, reports, or other documentation
+Compile daily maintenance logs for the biogas plant: record generator run-hours, turbine steam flows, safety…
Prepare and maintain logs, reports, or other documentation
+Compile daily maintenance logs for the biogas plant: record generator run-hours, turbine steam flows, safety inspections completed, corrective actions taken, and fuel gas composition, then file the weekly summary and send to operations and compliance.
The tools that do the workMicrosoft ExcelMicrosoft Outlookjob descriptionsO*NET
Pasted it? Good. When the reply comes back, push once: ask it to sharpen the weakest part. — Did this prompt help?
Make1
Identify equipment options such as compressors and make selections
+Survey the compressor options for the upgrade: compare three-stage reciprocating, two-stage screw, and…
Identify equipment options such as compressors and make selections
+Survey the compressor options for the upgrade: compare three-stage reciprocating, two-stage screw, and variable-speed scroll units for capacity, power draw, refrigerant compatibility with the heat pump, maintenance intervals, and safety certifications, then recommend the best fit for Plant B.
The tools that do the workAutodesk AutoCADMicrosoft Exceljob descriptionsO*NET
Pasted it? Good. When the reply comes back, push once: ask it to sharpen the weakest part. — Did this prompt help?
The daily work18
Determine whether emergency or auxiliary systems will be needed to keep properties heated or cooled in extreme weather conditions.
+Assess the upcoming cold snap and summer heat forecasts, inspect boilers, heat exchangers and backup…
Determine whether emergency or auxiliary systems will be needed to keep properties heated or cooled in extreme weather conditions.
+Assess the upcoming cold snap and summer heat forecasts, inspect boilers, heat exchangers and backup generators at Site B, calculate whether existing systems meet target indoor temps for Building A and offices, and recommend emergency or auxiliary systems by Friday.
The tools that do the workDistributed control system DCSO*NET
Pasted it? Good. When the reply comes back, push once: ask it to sharpen the weakest part. — Did this prompt help?
Integrate hot water heater systems with geothermal heat exchange systems.
+Design the connection between the plant hot water heater and the ground loop, map required pumps, valves and…
Integrate hot water heater systems with geothermal heat exchange systems.
+Design the connection between the plant hot water heater and the ground loop, map required pumps, valves and heat exchanger sizes, verify electrical supply and safety interlocks, then produce an install checklist for the site crew by Wednesday.
The tools that do the workThermal Dynamics Ground Loop Design GLDO*NET
Pasted it? Good. When the reply comes back, push once: ask it to sharpen the weakest part. — Did this prompt help?
Weld piping, such as high density polyethylene (HDPE) piping, using techniques such as butt, socket, side-wall, and electro-fusion welding.
+Prepare the HDPE weld plan for the south trench: list required butt and electro‑fusion joints, welding…
Weld piping, such as high density polyethylene (HDPE) piping, using techniques such as butt, socket, side-wall, and electro-fusion welding.
+Prepare the HDPE weld plan for the south trench: list required butt and electro‑fusion joints, welding parameters, preheat and cooldown procedures, PPE and QA weld test points, and schedule a certified welder and welding inspector for Tuesday.
The tools that do the workMicrosoft WordMicrosoft ExcelO*NET
Pasted it? Good. When the reply comes back, push once: ask it to sharpen the weakest part. — Did this prompt help?
Test water sources for factors, such as flow volume and contaminant presence.
+Survey the supply well and pond, measure flow rates and head using the portable meter, sample for solids and…
Test water sources for factors, such as flow volume and contaminant presence.
+Survey the supply well and pond, measure flow rates and head using the portable meter, sample for solids and common contaminants, log results against permit limits, and flag any sources that need filtration before use today.
The tools that do the workGeothermal Properties MeasurementO*NET
Pasted it? Good. When the reply comes back, push once: ask it to sharpen the weakest part. — Did this prompt help?
Backfill piping trenches to protect pipes from damage.
+Supervise trench backfill for the new thermal loop: confirm bedding depth, pipe separation, sand tamping…
Backfill piping trenches to protect pipes from damage.
+Supervise trench backfill for the new thermal loop: confirm bedding depth, pipe separation, sand tamping layers, warning tape placement and compaction tests, sign off repairs required, and update the site safety log before leaving.
The tools that do the workAutodesk AutoCADO*NET
Pasted it? Good. When the reply comes back, push once: ask it to sharpen the weakest part. — Did this prompt help?
Perform pre- and post-installation pressure, flow, and related tests
+Run pre‑commissioning tests on the new loop: perform pressure and leak tests, measure flow rates and…
Perform pre- and post-installation pressure, flow, and related tests
+Run pre‑commissioning tests on the new loop: perform pressure and leak tests, measure flow rates and differential pressures, verify pump curves and control setpoints, record post‑install readings and produce a test report for operations by end of shift.
The tools that do the workDistributed control system DCSMicrosoft Exceljob descriptions
Pasted it? Good. When the reply comes back, push once: ask it to sharpen the weakest part. — Did this prompt help?
Monitor measuring equipment to meet production needs
+Check the field meters and flow sensors across digester 1 and 2, verify the gas flow, temperature and…
Monitor measuring equipment to meet production needs
+Check the field meters and flow sensors across digester 1 and 2, verify the gas flow, temperature and pressure readings meet today's production target of 700 m3, log any deviations in the shift book and flag out-of-spec sensors for calibration before noon.
The tools that do the workDistributed control system DCSESCO
Pasted it? Good. When the reply comes back, push once: ask it to sharpen the weakest part. — Did this prompt help?
React to system problems
+Respond to the fugitive gas alarm in the control room: follow the alarm protocol, isolate the affected feed…
React to system problems
+Respond to the fugitive gas alarm in the control room: follow the alarm protocol, isolate the affected feed line, log actions and times in the incident record, notify the shift supervisor and plant manager, and schedule a troubleshooting walkdown within two hours.
The tools that do the workMicrosoft OfficeDistributed control system DCSESCO
Pasted it? Good. When the reply comes back, push once: ask it to sharpen the weakest part. — Did this prompt help?
Repair faults
+Inspect the failed pump in the digestate return, lock out and tag out its supply, swap to the standby pump,…
Repair faults
+Inspect the failed pump in the digestate return, lock out and tag out its supply, swap to the standby pump, replace the seized bearing assembly, run a post-repair performance check and update the maintenance record with parts and labor before the end of shift.
The tools that do the workSAPDistributed control system DCSESCO
Pasted it? Good. When the reply comes back, push once: ask it to sharpen the weakest part. — Did this prompt help?
Regulate the generators to control the flow of electricity
+Adjust the generator AVR and governor settings to reduce frequency drift from 50.2 to 50.0 Hz, monitor output…
Regulate the generators to control the flow of electricity
+Adjust the generator AVR and governor settings to reduce frequency drift from 50.2 to 50.0 Hz, monitor output and bus voltage for ten minutes, log the changes with times and the operator name, and inform the grid interface engineer if stability does not hold.
The tools that do the workDistributed control system DCSESCO
Pasted it? Good. When the reply comes back, push once: ask it to sharpen the weakest part. — Did this prompt help?
Apply health and safety standards
+Walk the plant using the weekly safety checklist: verify PPE use, confirm gas detectors are calibrated,…
Apply health and safety standards
+Walk the plant using the weekly safety checklist: verify PPE use, confirm gas detectors are calibrated, inspect emergency shutdown barriers and earthing of generator panels, sign the safety register and report any non-conformances to the safety officer by 16:00.
Pasted it? Good. When the reply comes back, push once: ask it to sharpen the weakest part. — Did this prompt help?
Monitor electric generators
+Monitor each generator's bearing temperatures, vibration and output current every hour during peak load,…
Monitor electric generators
+Monitor each generator's bearing temperatures, vibration and output current every hour during peak load, compare to yesterday's baseline and raise a maintenance ticket immediately if vibration exceeds 4 mm/s or output drops more than 8 percent.
Pasted it? Good. When the reply comes back, push once: ask it to sharpen the weakest part. — Did this prompt help?
Operate steam turbine
+Start the steam turbine from cold standby, follow the warm-up ramp to 2000 rpm while logging vibration and…
Operate steam turbine
+Start the steam turbine from cold standby, follow the warm-up ramp to 2000 rpm while logging vibration and bearing temps, confirm governor response under increasing load steps to 3 MW, and report any alarms to shift lead before full load.
Pasted it? Good. When the reply comes back, push once: ask it to sharpen the weakest part. — Did this prompt help?
Electrical power safety regulations
+Conduct the electrical safety walkdown for the 11 kV switchgear: isolate the feeder, verify lockout tags,…
Electrical power safety regulations
+Conduct the electrical safety walkdown for the 11 kV switchgear: isolate the feeder, verify lockout tags, test absence of voltage with calibrated meter, record results on the safety checklist, and notify electrical supervisor before re-energising.
Pasted it? Good. When the reply comes back, push once: ask it to sharpen the weakest part. — Did this prompt help?
Control steam flows
+Adjust main steam pressure controller to cut steam flow by 10 percent during the next low-load step, monitor…
Control steam flows
+Adjust main steam pressure controller to cut steam flow by 10 percent during the next low-load step, monitor downstream pressure and turbine inlet temp for five minutes, and rollback if pressure droops more than 5 percent or trip alarms appear.
Pasted it? Good. When the reply comes back, push once: ask it to sharpen the weakest part. — Did this prompt help?
Electric generators
+Run the generator health check: record terminal voltages, phase currents and neutral shift under a 2 MW load…
Electric generators
+Run the generator health check: record terminal voltages, phase currents and neutral shift under a 2 MW load ramp, compare insulation temperature against baseline, log any unbalance over 3 percent and raise a maintenance ticket if thresholds exceeded.
Pasted it? Good. When the reply comes back, push once: ask it to sharpen the weakest part. — Did this prompt help?
Monitor valves
+Inspect and cycle the main steam and bypass valves during the midday shift: confirm position feedback matches…
Monitor valves
+Inspect and cycle the main steam and bypass valves during the midday shift: confirm position feedback matches hand-wheel positions, record leak tightness and stem temperature, tag any valve with slow response for valve shop before night shift.
Pasted it? Good. When the reply comes back, push once: ask it to sharpen the weakest part. — Did this prompt help?
Distributed control
+Record the hourly digester temperatures and valve positions into the distributed control log, note the…
Distributed control
+Record the hourly digester temperatures and valve positions into the distributed control log, note the feedstock batch number and operator initials, and flag any deviations over two degrees for the shift handover.
The tools that do the workDistributed control system DCSO*NET
Pasted it? Good. When the reply comes back, push once: ask it to sharpen the weakest part. — Did this prompt help?
Says who?
These are the pages we read to build this. Open any of them and check us.
The logs, files & records this job keeps
Shared with other careers — the same record means something different in each.
Related careers
Same family of work — each with its own tasks and prompts.
The LLOS Work Atlas is the world's largest evidenced task library — a map of human work, with a ready prompt behind every task. 1,774 careers · every task named by the sources that witnessed it — O*NET, ESCO, real job descriptions, Wikipedia — and the deepest tasks by several at once. And it is honest about limits: where AI cannot help, the map says so.
The rest of the map
Same library, five ways in.
Copyright © LLOS.ai · 2026 — original pedagogy, voice, and design — all rights reserved.
Built on public evidence: O*NET®, ESCO, Wikipedia, U.S. Bureau of Labor Statistics, ILOSTAT. All sources & licenses
Built on public evidence: O*NET®, ESCO, Wikipedia, U.S. Bureau of Labor Statistics, ILOSTAT. All sources & licenses