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unit 4 boiler operation revision exam 2024

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unit 4 boiler operation revision exam 2024 Although boilers have many different ignition systems, they all follow the same sequence of steps. Which of the following is the third step? Select one: a. Main burner ignition b. Pilot ignition c. Post Purge d. Pre-purge a A well-planned PM system will Select one: a. ensure equipment longevity. b. create less need for rounds and inspections. c. will cover only the most critical plant equipment. d. respond quickly to equipment breakdown. a When preparing to start a steam boiler with a fully modulating firing rate control, set the manual-automatic switch to _________ and the flame control switch to the __________ position. Select one: a. automatic, low-fire b. manual, low-fire c. manual, high-fire d. manual, automatic b

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unit 4 boiler operation revision exam
2024
WhenXshouldXwetXlayupXbeXused?

SelectXone:

a.XWhenXaXboilerXmayXbeXexposedXtoXfreezingXconditions.

b.XWhenXaXboilerXisXonXstandby.

c.XForXlongXtermXstorage.

d.XWhenXdesiccantXisXunavailable.X-XANSWERXb



InXaXmultipleXboilerXhighXpressureXsteamXplant,XwhenXstartingXanXentireXsystemXfromXcold

SelectXone:

a.XAXsmallXauxiliaryXheatingXboilerXisXusedXtoXwarmXtheXsteamXlinesXwhileXtheXpowerXboilersXareXwar
ming.

b.XAllXtheXboilersXareXstartedXandXwarmedXatXtheXsameXtime.

c.XTheXentireXsystemXwarmsXandXpressurizesXasXoneXboilerXwarms,XexceptXforXtheXboilersXbeingXleftX
offXline.

d.XBoilersXremainingXoff-lineXmustXhaveXtheirXboilerXandXheaderXstopXvalvesXopen,XandXtheirXnon-
returnXdrainXvalvesXshut.X-XANSWERXc



AlthoughXboilersXhaveXmanyXdifferentXignitionXsystems,XtheyXallXfollowXtheXsameXsequenceXofXsteps.X
WhichXofXtheXfollowingXisXtheXthirdXstep?

SelectXone:

a.XMainXburnerXignition

b.XPilotXignition

c.XPostXPurge

d.XPre-purgeX-XANSWERXa

, AXwell-plannedXPMXsystemXwill

SelectXone:

a.XensureXequipmentXlongevity.

b.XcreateXlessXneedXforXroundsXandXinspections.

c.XwillXcoverXonlyXtheXmostXcriticalXplantXequipment.

d.XrespondXquicklyXtoXequipmentXbreakdown.X-XANSWERXa



WhenXpreparingXtoXstartXaXsteamXboilerXwithXaXfullyXmodulatingXfiringXrateXcontrol,XsetXtheXmanual-
automaticXswitchXtoX_________XandXtheXflameXcontrolXswitchXtoXtheX__________Xposition.

SelectXone:

a.Xautomatic,Xlow-fire

b.Xmanual,Xlow-fire

c.Xmanual,Xhigh-fire

d.Xmanual,XautomaticX-XANSWERXb



BoilersXshouldXbeXwarmedXup

SelectXone:

a.XwithXmaximumXcombustionXair,XtoXpreventXsmoking

b.Xrapidly,XsoXtheXmetalXheatsXupXfaster

c.Xslowly,XtoXminimizeXdifferentialXexpansionXandXthermalXshock

d.XusingXonlyXtheXpilotXburner.X-XANSWERXc



MechanicalXchartXrecorders

SelectXone:

a.XareXusedXsoXregularXreadingsXdoXnotXneedXtoXbeXtaken.

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