Pass Benchmark: 70% (21/30) • Standard: USCG NMC / 46 CFR
USCG Steam Plants (Boilers & Turbines) (Set 21)
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Question 1 of 30
The main reason for having a low suction line on the fuel oil service or settling tanks is to __________.
Browse Questions in Set 21
30 MCQs #1 The main reason for having a low suction line on the fuel oil service or settling tanks is to __________. #2 Which of the following actions should be taken FIRST when water is found in the fuel oil settling tank? #3 Fuel oil is transferred to the settling tanks for __________. #4 The relief valve on the discharge side of the fuel oil service pump may discharge directly to the suction side of the pump, or to the __________. #5 Pumps normally used for fuel oil service are __________. #6 Valve "H" shown in the illustration, functions to __________. Illustration SG-0009 #7 The valve located between the fuel oil header and the burner valve is known as the __________. #8 The primary purpose of the sprayer plate in a mechanical atomizing oil burner is to __________. #9 The amount of oil atomized by a straight mechanical fuel oil burner depends on the sprayer plate size and the __________. #10 The illustrated burner atomizer assembly is __________. Illustration SG-0022 #11 In a steam assist fuel oil atomizer, the steam pressure is higher than the oil pressure at __________. #12 In most installations, the firing rate of a boiler using steam atomization is indicated by the __________. #13 In a steam assist atomizer, the fuel oil/steam mix takes place entirely within the __________. #14 Compared to the return flow oil burner system, an internally mixed steam atomizer requires __________. #15 Boilers equipped with steam atomizers can operate over a wide load range without cutting burners in and out because __________. #16 A boiler has a steam delivery capacity of 100,000 pounds per hour, and is equipped with four steam atomizing burners. If the load range of the burners is 4 to 1, this means that __________. #17 According to the illustration, what part number identifies the "air door handle"? Illustration SG-0016 #18 According to the illustration, what part number identifies the "igniter"? Illustration SG-0016 #19 In an air register assembly, the majority of air passes through the __________. #20 According to the illustration, what part number identifies the "diffuser"? Illustration SG-0016 #21 The purpose of a 'peep' hole in the boiler casing is to __________. #22 The fins on the tubes of a fin type fuel oil heater are provided to __________. #23 When warming up a fuel oil service system, you should open the steam supply to the fuel oil heaters __________. #24 Boiler furnace brickwork can be fractured and broken by thermal shock caused by __________. #25 Which of the conditions listed can cause the flame of a mechanically atomized burner to be blown away from the burner tip when you are attempting to light off? #26 Fluctuations in the atomizing steam pressure at the burners could be caused by a/an __________. #27 In a multi-burner firebox, a burner tip with a worn and enlarged orifice will __________. #28 If the temperature of the fuel oil entering an atomizer is too low, the burner will __________. #29 A leaky fuel oil heater relief valve could be indicated by an increase in the __________. #30 Condensate accumulation in the steam side of a fuel oil heater could result in __________.
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