SPECIAL BOILER LICENSE PRACTICE EXAM MINNESOTA QUESTIONS AND CORRECT ANSWERS

SPECIAL BOILER LICENSE PRACTICE
EXAM MINNESOTA QUESTIONS AND
CORRECT ANSWERS

HowA2manyA2wayA2canA2heatA2beA2transferred?A2-A2Ans--ThreeA2(ConductionA2--
A2ConvectionA2--A2Radiation)


HowA2mayA2typesA2ofA2lowA2pressureA2areA2there?A2-A2Ans--Three

BoilerA2andA2boilerA2fittingA2usedA2inA2theA2stateA2ofA2MinnesotaA2mustA2beA2constructedA2
toA2whatA2code?A2-A2Ans--A.S.M.E

WhatA2controlsA2theA2startingA2ansA2stoppingA2ofA2theA2burnerA2byA2sendingA2theA2temper
atureA2ofA2theA2waterA2inA2aA2hotA2waterA2boiler?A2-A2Ans--AquaA2Stat

WhenA2aA2hydrostaticA2testA2ofA2aA2boilerA2exceedsA2theA2maximumA2allowedA2workingA2p
ressureA2eachA2safetyA2valve,A2ifA2leftA2attachedA2toA2theA2boiler,A2should:A2-A2Ans--
HaveA2itsA2valveA2discA2heldA2toA2itsA2seatA2byA2meansA2ofA2testingA2clampA2orA2"gag"

HeatA2canA2beA2transferredA2inA2threeA2waysA2andA2theyA2are:A2-A2Ans--ConductionA2--
ConvectionA2-A2Radiation

TheA2firstA2sequenceA2inA2theA2seriesA2ofA2automaticA2burnerA2controlA2is:A2-A2Ans--
Purging

CanA2aA2lowA2waterA2lowA2waterA2conditionA2iA2aA2hotA2waterA2heatingA2typeA2boiler?A2-
A2Ans--Yes,A2forA2numerousA2reasons


OtherA2thanA2aA2safetyA2relieveA2valveA2whatA2otherA2safetyA2deviceA2shouldA2beA2installe
dA2onA2aA2hotA2waterA2heatingA2boiler?A2-A2Ans--LowA2waterA2cutA2off

EachA2boilerA2inA2aA2batteryA2(pipeA2togetherA2sharingA2theA2sameA2commonA2header)A2m
ustA2have:A2-A2Ans--AA2mainA2stemA2stop

whatA2removesA2airA2fromA2aA2hotA2waterA2boilerA2system?A2-A2Ans--AirA2Control

InA2aA2stemA2boilerA2system,A2theA2unitA2thatA2turnsA2beA2burnerA2onA2andA2offA2basedA2on
A2steamA2pressureA2isA2the:A2-A2Ans--PressureA2Control


IfA2waterA2inA2theA2gaugeA2isA2notA2visibleA2becauseA2ofA2failureA2ofA2theA2feedA2waterA2su
pply,A2whatA2shouldA2beA2done?A2-A2Ans--
ShutA2offA2theA2fuelA2toA2theA2burnerA2andA2secureA2theA2boiler.

, WhatA2conditionsA2areA2necessaryA2toA2causeA2aA2furnaceA2explosion?A2-A2Ans--
AccumulationA2ofA2unburnedA2fuel,A2oxygenA2andA2anA2ignitionA2source

TheA2LWCOA2shouldA2beA2tested:A2-A2Ans--Daily

GaugeA2pressureA2plusA214.7A2psiA2isA2calledA2what?A2-A2Ans--AbsoluteA2pressure

TheA2evaporationA2ofA234.5A2pondsA2ofA2waterA2perA2hourA2fromA2andA2atA2aA2temperature
A2ofA2212A2degreesA2FahrenheitA2isA2definedA2as:A2-A2Ans--OneA2boilerA2horsepower


WhenA2aA2safetyA2valveA2opensA2andA2closesA2rapidlyA2itA2isA2referredA2toA2asA2-A2Ans--
Chattering

FurnaceA2explosionsA2areA2causedA2byA2aA2buildupA2ofA2combustibleA2gases,A2orA2vapors
A2inA2theA2combustionA2chamber,A2whatA2isA2theA2termA2usedA2toA2remedyA2thisA2condition
?A2-A2Ans--Purging

WhyA2isA2aA2pigtailA2orA2siphonA2requiredA2inA2steamA2pressureA2gaugeA2lines?A2-A2Ans--
toA2protectA2theA2gaugeA2fromA2aA2highA2temperature.

InA2aA2stemA2boilerA2system,A2whatA2isA2theA2termA2usedA2forA2replacingA2theA2waterA2thatA
2hasA2beenA2lostA2byA2blowingA2downA2theA2boilerA2throughA2leaksA2inA2theA2system?A2-
A2Ans--AA2makeA2upA2water


OnA2steamA2boilerA2system,A2whyA2areA2bottomA2blowA2downA2valvesA2installedA2atA2theA2l
owestA2pointA2ofA2theA2watersideA2ofA2boilers?A2-A2Ans--
ToA2removeA2sludgeA2andA2sediment.

BoilerA2heatingA2isA2definingA2asA2:A2-A2Ans--
WaterA2onA2oneA2sideA2hotA2gasesA2onA2theA2otherA2side.

InA2aA2fireA2tubeA2boiler,A2theA2waterA2-A2Ans--SurroundsA2theA2tubes

WhenA2theA2bottomA2blowA2downA2valvesA2areA2usedA2onA2aA2steamA2boiler,A2whatA2valve
A2locatedA2closetA2toA2theA2boilerA2shell?A2-A2Ans--TheA2quickA2openingA2valve


WhatA2isA2theA2functionA2ofA2anA2automaticA2cityA2waterA2feederA2onA2aA2lowA2pressureA2b
oiler?A2-A2Ans--ToA2controlA2waterA2toA2theA2feedA2waterA2tank

TheA2purposeA2ofA2aA2safetyA2valveA2onA2aA2steamA2boilerA2isA2to:A2-A2Ans--
ToA2preventA2theA2boilerA2fromA2exceedingA2itsA2MAWP

TheA2controlA2designedA2asA2aA2safetyA2backA2up,A2shouldA2theA2operatingA2failA2is:A2-
A2Ans--AA2highA2limitA2control