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Resistance test of temperature sensors in the cooling supply section of the ventilation unit.
Safety engineers inspect the piping system and operation of fire hydrants in the factory.  Safety Technician inspects fire hydrant system under building construction
Engineer use laptop to inspection pipeline and valve of service water supply in fire riser room. Multi-Ethnic Blue-collar worker and technician testing fire suppression system. Fire protection concept
Turbine generator rotor with blades and discs, interior view. Elements, details and mechanisms of turbines. Energy and mechanical engineering
Inside view of an Aircraft Jet Engine
Senior specialist engineer wearing green safety jacket hold digital tablet working preventive maintenance industrial HVAC machinery
Professional male mechanic working in a tool shop
Team of engineer or technician maintenance, checking, or test system springer prevent fire. Group of African American contractor checking fire sprinkler system, pipe assembly, red fire pipe
Insulated pipes and cooling towers for commercial HVAC.
Technician Looking For a Gas Leak Using Digital Gas Detector. Safety Check.
Construction sites of residential buildings - developing area, aerial view
Internal rotor of steam turbine at a workshop
Building cooling air conditioner outdoor unit
The Machenical service team for repair fix engine truck or vehicle, parts and spare part , check up fix transportation setvice for garage and showroom service
Steel pipelines in the Refinery
Industrial interior of water pump, valves, pressure gauges, motors inside engine room. Valve and pumps in an industrial room. Urban modern powerful pipelines and pumps, automatic control systems
Large HVAC installation on a membrane roof.
Engineer or technician work checking Fire suppression system and fire equipment. Engineer check red generator pump for water sprinkler piping and fire alarm control system
Circular knitting machine in a textile industry
Older Russian helicopter from 80s era motor turboshaft or engine cut through detail - displayed at weapons exhibition
Construction site with workman in safety uniform walking along walkway. Click to see more...
Mechanical gearing
Manufacturing. Worker operating CNC milling machine
An African-American man inspecting a pipe clamp on a concrete boom pump truck. This is part of a series showing workers operating concrete pump trucks at a construction site.
Aerial view of Saltend Power Station, Combined Cycle Gas Turbine, Saltend Chemicals Park, Kingston upon Hull England
gas turbine rotor being serviced at workshop
Modern medium-power biofuel boiler
Technician inspector alignment pump  and electric motor, Repairing work in factory concept
Close-up of helicopter engine  in hangar.
Free Images: "bestof:Gas Turbine Systems Technician (Mechanical) Fireman Daniel Tamayo, from Brownsville, Texas, left, and Gas Turbine Systems Technician (Mechanical) Fireman Carlos"
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