BOILER OPERATOR LICENSING EXAM QUESTIONS AND CORRECT ANSWERS

BOILER OPERATOR LICENSING EXAM
QUESTIONS AND CORRECT ANSWERS

1A2orA2moreA2safetyA2valvesA2-A2Ans--allA2steamA2boilersA2mustA2have

LockedA2closedA2-A2Ans--
beforeA2anyoneA2entersA2theA2boilerA2drum,A2theA2mainA2steamA2stopA2valve,A2bottomA2bl
owdownA2valves,A2&A2feedwaterA2valvesA2shouldA2be

212A2degreesA2FA2-A2Ans--
atA2atmosphericA2pressure,A2waterA2beginsA2toA2boilA2atA2approximately

FuelA2oil,A2gas,A2&A2coalA2-A2Ans--fuelsA2mostA2commonlyA2usedA2inA2boilers

SteamA2pressureA2gaugeA2-A2Ans--
mustA2beA2connectedA2toA2theA2highestA2partA2ofA2theA2steamA2sideA2ofA2theA2boiler

HalfA2fullA2-A2Ans--withA2anA2NOWLA2inA2aA2boiler,A2theA2gaugeA2glassA2isA2approximately

FoamingA2-A2Ans--
aA2highA2surfaceA2tensionA2onA2topA2ofA2theA2boilerA2waterA2canA2leadA2to

MudA2drumA2-A2Ans--
BottomA2blowdownA2onA2aA2boilerA2removesA2sludgeA2&A2sedimentA2fromA2the

TinA2-A2Ans--aA2boilerA2fusibleA2plugA2isA2brassA2orA2bronzeA2withA2aA2coreA2of

PoundsA2perA2squareA2inchA2-A2Ans--aA2steamA2pressureA2gaugeA2isA2calibratedA2in

TryA2cocksA2-A2Ans--aA2secondaryA2meansA2ofA2determiningA2boilerA2waterA2level

OilyA2wasteA2ragA2storageA2-A2Ans--
firesA2causedA2byA2spontaneousA2combustionA2areA2mostA2likelyA2toA2occurA2inA2the

SteamA2-A2Ans--
aA2siphonA2installedA2betweenA2theA2boilerA2&A2theA2pressureA2gaugeA2protectsA2theA2Bou
rdonA2tubeA2from

PreventA2formationA2ofA2scaleA2-A2Ans--boilerA2feedwaterA2isA2chemicallyA2treatedA2to

InsideA2tubeA2surfaceA2-A2Ans--inA2aA2firetubeA2boiler,A2sootA2accumulatesA2onA2the

1.5A2timesA2theA2MAWPA2-A2Ans--
theA2pressureA2appliedA2onA2theA2boilerA2duringA2aA2hydrostaticA2testA2shouldA2be

, DecreasedA2-A2Ans--asA2fuelA2oilA2isA2heated,A2itsA2viscosityA2is

ChimneyA2-A2Ans--theA2inducedA2draftA2fanA2isA2locatedA2betweenA2theA2boilerA2&A2the

FlashA2whenA2exposedA2toA2anA2openA2flameA2-A2Ans--
theA2flashA2pointA2ofA2fuelA2oilA2isA2theA2minimumA2temperatureA2atA2whichA2theA2fuelA2will

BurnA2continuallyA2-A2Ans--
theA2fireA2pointA2ofA2fuelA2oilA2isA2theA2minimumA2temperatureA2atA2whichA2theA2fuelA2will

Lowest;A2flowA2-A2Ans--
theA2pourA2pointA2ofA2fuelA2oilA2isA2theA2____A2temperatureA2atA2whichA2fuelA2oilA2willA2___
_

DangerousA2toA2handleA2-A2Ans--fuelA2oilA2withA2aA2lowA2flashA2pointA2is

PressureA2controlA2-A2Ans--
theA2operatingA2rangeA2ofA2aA2steamA2boilerA2isA2controlledA2byA2a

CondensateA2inA2theA2lineA2-A2Ans--waterA2hammerA2inA2steamA2linesA2isA2causedA2by

ManometerA2-A2Ans--
measuresA2theA2differenceA2inA2pressureA2betweenA22A2points,A2measuresA2draft

LowestA2loadA2-A2Ans--theA2bestA2timeA2toA2blowdownA2aA2boilerA2isA2whenA2itA2isA2atA2its

SilicaA2gelA2-A2Ans--
BoilersA2thatA2areA2laidA2upA2dryA2haveA2traysA2ofA2____A2putA2inA2theA2steamA2&A2waterA2d
rumsA2toA2absorbA2moisture

Mixture;A2atomization;A2temperature;A2timeA2-A2Ans--
requiredA2toA2obtainA2completeA2combustionA2ofA2aA2fuel

PittingA2-A2Ans--oxygenA2inA2theA2boilerA2causes

SecureA2theA2firesA2&A2feedwaterA2-A2Ans--
whenA2theA2boilerA2lowA2waterA2alarmA2isA2ringing,A2theA2operatorA2should

PurgingA2theA2furnaceA2afterA2ignitionA2failureA2-A2Ans--
aA2furnaceA2explosionA2canA2beA2preventedA2by

InfraredA2lightA2-A2Ans--
aA2leadA2sulfideA2cellA2whichA2isA2usedA2forA2flameA2detectionA2isA2sensitiveA2to

SpringA2loadedA2-A2Ans--aA2popA2safetyA2valveA2is