OHIO BOILERS UPDATED CORE MAIN EXAM
QUESTIONS AND ANSWERS SURE A+
✔✔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
QUESTIONS AND ANSWERS SURE A+
✔✔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
