Steam systems

• The purpose of the boiler modulating pressure control is to: regulate the high and low firing rates of the burner
• The metering combustion control system is sensitive to change in: steam flow and pressure
• If a steam trap continues to blow through, what condition occurs? steam will vent from the condensate tank
• In order to maintain a given steam pressure, what device would be used to turn the burner on and off? the pressure control
• Identify the most common type of pressure control device used in low-pressure boiler plants:mercury-tube
• The pressure control device is protected from the hot steam by the use of a: pig-tail or siphon
• In what unit of measurement are steam pressure gauges calibrated? pounds per square inch
• What device is used to obtain sufficient static head for the returning condensate in a two pipe gravity return system? a return trap
• The modulating pressure control device on regular heating boiler must:control the boiler's high or low fire
• The purpose and intent of the pressure control device on a fully automatic steam boiler system is to: turn the burner on and off
• If carryover is dangerous what could it lead to: water hammer
• What device is connected to the pressure controller and is used to prevent excessive temperature gradients from reaching the controller? the pig-tail siphon
• The two scales found on the boiler pressure control are used to: set the operating steam pressure range of the boiler
• Siphons are placed between the boiler and the steam pressure gauge to prevent water from entering the Bourdon tube. true
• When the heat energy in steam is lost, what happens to it? it is reclaimed as condensate