li>Tests, adjusts, maintains, and repairs boiler safety devices such as flame safeguard systems, pressure switches, pressure differential safety switches, timers, water column safety devices, electric/electronic probes and sensors, steam safety valves, steam pressure reducing valves and automatic and manual fuel valves for preventing major pressure vessel failures and/or furnace explosions. Adjusts equipment as necessary for efficient operation, including such equipment as alarm devices, proper size burner tips, automatic combustion controls, feed water deaerator, and heaters, chillers, internal chemical injection equipment, automatic stop valves, forced and induced draft fans, fuel and steam pressure control and relief valves, feedwater regulators and pumps.