Pass Benchmark: 70% (21/30) • Standard: USCG NMC / 46 CFR

USCG Steam Plants (Boilers & Turbines) (Set 18)

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Question 1 of 30

Which of the following statements describes how the fuel oil enters the whirling chambers of the sprayer plates used in a auxiliary boiler return flow fuel oil system?

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30 MCQs

#1 Which of the following statements describes how the fuel oil enters the whirling chambers of the sprayer plates used in a auxiliary boiler return flow fuel oil system? #2 The solenoid valves in the fuel oil supply line to an automatically fired auxiliary boiler, are automatically closed by __________. #3 A variable capacity, pressure atomizing, fuel oil burner functions to __________. #4 When the steam pressure drops below a set value on an automatically fired auxiliary boiler, fitted with rotary cup atomizers, the combustion control system will __________. #5 Control of the fuel oil metering valve in an automatically fired auxiliary boiler is accomplished by a __________. #6 Which piping system is described in the illustration provided. Illustration SG-0010 #7 If manual control of the water level in a steaming boiler is required, the proper method of control is with the auxiliary feed __________. #8 The boiler main feed stop check valve is located nearest the __________. #9 When operating with the auxiliary feed line, feed water flow is controlled __________. #10 A boiler feed stop-valve must be mounted __________. #11 The pressure in the feed water system must exceed boiler steam drum pressure in order to __________. #12 Which of the following statements is correct regarding the start-up operation of a non-condensing turbine-driven feed pump? #13 Recirculation of the feed water ensures a flow of water through the __________. #14 During initial starting of the standby turbine-driven boiler feed pump, which of the listed valves should remain closed? #15 A turbine-driven centrifugal feed pump used for boiler feed service should normally be stopped by __________. #16 Why is it necessary to have a relief valve protect the deaerating feed tank from internal pressure? #17 High pressure steam drains are normally discharged to the __________. #18 To provide emergency feed water supply to a steaming boiler, if it becomes necessary to secure the DC heater, suction should be taken on the distilled water tank using the __________. #19 The purpose of the steam control valves installed in the auxiliary exhaust line is to __________. #20 The gland exhaust fan draws steam and non-condensable vapors from the gland exhaust condenser and discharges to the __________. #21 Deaeration of condensate primarily occurs in what section of the illustration shown. Illustration SG-0010 #22 Proper lagging of a single-element feed water regulator is accomplished by applying the insulation material __________. #23 A two-element boiler feed water regulator is controlled by __________. #24 A pneumatic dual element, main propulsion, boiler feed water regulating system commonly used aboard ship utilizes __________. #25 A single element boiler feed water regulating system used aboard ship utilizes __________. #26 Excess free oxygen in the boiler feed water can be the result of __________. #27 If the DC heater relief valve lifts frequently, the cause can be excessive __________. #28 Which of the conditions listed may be indicated by the lifting of the DC heater relief valve? #29 Excessive water loss from the main feed system can be caused by __________. #30 In a closed feed and water cycle, which of the conditions listed could prevent vacuum from reaching the desired level?

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