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engineer male technician worker working service hotel boiler tank hot water supply pipe system. man safety checking maintenance pipeline heating water delivery line at roof top outdoor.

Caucasian man engineer using digital tablet working late night shift at petroleum oil refinery in industrial estate

Maintenance engineer perform boiler spray nozzle leakage check inspectiion at the pressure tank during plant inoperation outage shutdown

An air conditioning engineer is finishing the installation of several units on a rooftop. Two colleagues can be seen also installing units in the background. They are wearing hi vis jackets, hard hats and safety goggles.

Metal workers using a grinder

modern factory worker turning valve

Engineer man in waistcoats and hardhats with documents inspecting construction site, Mechanical worker checking of the battery storage system

A shot of an young engineer wearing a helmet and using a laptop and hands free device during his night shirt in the oil rafinery. Engineering concept.

An inspector reviews a large industrial plant, clipboard in hand

Portrait of male engineer with hardhat using digital tablet while working on his work site

engineer under checking the industry cooling tower air conditioner is water cooling tower air chiller HVAC of large industrial building to control air system.

airconditioning engineers servicing

Steel and iron worker is working. Use Nikon D300 camera.

Heating engineer setting up the temperature and pressure in boiler room of district heating plant.

Male Worker Inspecting Water Valve For Leaks In Basement

Worker in protective mask welding pipe in workshop

hvac engineer install heat recovery ventilation system for new house. copy space

Electrical engineer working in control room. Electrical engineer checking Power Distribution Cabinet in the control room

Engineers inspected the electrical switchboard and verified the operational voltage range. Technician setting electrical in inverter solar panel room

The specialist in HVAC systems (Heating Ventilation and Air conditioning), holds the blueprint to check with the air chiller and cooling piping of the factory or industrial building on the rooftop

Photo of a Young Male Plumber with Protective Helmet who is Repairing a Water Pipe at the Construction Site.

Professional factory worker in safety work wear and hardhat doing pipes inspection in refinery or production plant.

Engineer man with portable computer working late nightshift in petroleum factory.

Hot red graphite electrodes in steel mill workshop. Electric arc furnace area at iron foundry.

Rooftop air conditioning system inspection. Caucasian white workers check units and log the result with a portable computer.

Industry engineer under checking the industry cooling tower air conditioner is water cooling tower air chiller HVAC of large industrial building to control air system.

Electric technician working on a fuse box or switch board, using pliers or engineering tool. Male electrician doing complex installation and connection of electrical equipment and wiring cables.

Caucasian White Female Engineer controls the quality using a tablet device to inspect the drilling machine in the factory.

A female technician works in a chemical plant

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