Minnesota Boiler Operator Licensing Exam A Score

Minnesota Boiler Operator Licensing Exam A Score 1 or more safety valves - all steam boilers must have Locked closed - before anyone enters the boiler drum, the main steam stop valve, bottom blowdown valves, & feedwater valves should be 212 degrees F - at atmospheric pressure, water begins to boil at approximately Fuel oil, gas, & coal - fuels most commonly used in boilers Steam pressure gauge - must be connected to the highest part of the steam side of the boiler Half full - with an NOWL in a boiler, the gauge glass is approximately Foaming - a high surface tension on top of the boiler water can lead to Mud drum - Bottom blowdown on a boiler removes sludge & sediment from the Tin - a boiler fusible plug is brass or bronze with a core of Pounds per square inch - a steam pressure gauge is calibrated in Try cocks - a secondary means of determining boiler water level Oily waste rag storage - fires caused by spontaneous combustion are most likely to occur in the Steam - a siphon installed between the boiler & the pressure gauge protects the Bourdon tube from Prevent formation of scale - boiler feedwater is chemically treated to Inside tube surface - in a firetube boiler, soot accumulates on the 1.5 times the MAWP - the pressure applied on the boiler during a hydrostatic test should be Decreased - as fuel oil is heated, its viscosity is Chimney - the induced draft fan is located between the boiler & the Flash when exposed to an open flame - the flash point of fuel oil is the minimum temperature at which the fuel will Burn continually - the fire point of fuel oil is the minimum temperature at which the fuel will Lowest; flow - the pour point of fuel oil is the ____ temperature at which fuel oil will ____ Dangerous to handle - fuel oil with a low flash point is Pressure control - the operating range of a steam boiler is controlled by a Condensate in the line - water hammer in steam lines is caused by Manometer - measures the difference in pressure between 2 points, measures draft Lowest load - the best time to blowdown a boiler is when it is at its Silica gel - Boilers that are laid up dry have trays of ____ put in the steam & water drums to absorb moisture Mixture; atomization; temperature; time - required to obtain complete combustion of a fuel Pitting - oxygen in the boiler causes Secure the fires & feedwater - when the boiler low water alarm is ringing, the operator should Purging the furnace after ignition failure - a furnace explosion can be prevented by Infrared light - a lead sulfide cell which is used for flame detection is sensitive to Spring loaded - a pop safety valve is Secure feedwater going to the boiler - to test a low water fuel cutoff using an evaporation test, the boiler operator must NFPA - hazard signal system provides container label information about hazardous material Open the boiler vent - to prevent vacuum from forming on a boiler that is coming offline Quick opening; last - low pressure boilers equipped with quick opening & screw valves are blown down by opening the ____ valve first & closing it ____ Internal resistance to flow - the viscosity of fuel oil is the measurement of the Change scale forming salts to a nonadhering sludge - feedwater is treated chemically before it enters the boiler to Minimal amount of excess air - complete combustion is defined as burning all fuel using