SPECIAL BOILER LICENSE PRACTICE EXAM MINNESOTA QUESTIONS AND CORRECT ANSWERS

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SPECIAL BOILER LICENSE PRACTICE EXAM MINNESOTA QUESTIONS AND CORRECT ANSWERS

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2025/2026

Institution MN Boiler License

Course MN Boiler License

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SPECIAL BOILER LICENSE PRACTICE EXAM MINNESOTA QUESTIONS AND CORRECT ANSWERS

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SPECIAL BOILER LICENSE
PRACTICE EXAM MINNESOTA
QUESTIONS AND CORRECT
ANSWERS

Howzzmanyzzwayzzcanzzheatzzbezztransferred?zz-zzans-Threezz(Conductionzz--zzConvectionzz--
zzRadiation)

Howzzmayzztypeszzofzzlowzzpressurezzarezzthere?zz-zzans-Three

BoilerzzandzzboilerzzfittingzzusedzzinzzthezzstatezzofzzMinnesotazzmustzzbezzconstructedzztozzwh
atzzcode?zz-zzans-A.S.M.E

Whatzzcontrolszzthezzstartingzzanszzstoppingzzofzzthezzburnerzzbyzzsendingzzthezztemperaturezz
ofzzthezzwaterzzinzzazzhotzzwaterzzboiler?zz-zzans-AquazzStat

Whenzzazzhydrostaticzztestzzofzzazzboilerzzexceedszzthezzmaximumzzallowedzzworkingzzpressu
rezzeachzzsafetyzzvalve,zzifzzleftzzattachedzztozzthezzboiler,zzshould:zz-zzans-
Havezzitszzvalvezzdisczzheldzztozzitszzseatzzbyzzmeanszzofzztestingzzclampzzorzz"gag"

Heatzzcanzzbezztransferredzzinzzthreezzwayszzandzztheyzzare:zz-zzans-Conductionzz--
Convectionzz-zzRadiation

Thezzfirstzzsequencezzinzzthezzserieszzofzzautomaticzzburnerzzcontrolzzis:zz-zzans-Purging

Canzzazzlowzzwaterzzlowzzwaterzzconditionzzizzazzhotzzwaterzzheatingzztypezzboiler?zz-zzans-
Yes,zzforzznumerouszzreasons

Otherzzthanzzazzsafetyzzrelievezzvalvezzwhatzzotherzzsafetyzzdevicezzshouldzzbezzinstalledzzonzz
azzhotzzwaterzzheatingzzboiler?zz-zzans-Lowzzwaterzzcutzzoff

Eachzzboilerzzinzzazzbatteryzz(pipezztogetherzzsharingzzthezzsamezzcommonzzheader)zzmustzzh
ave:zz-zzans-Azzmainzzstemzzstop

, whatzzremoveszzairzzfromzzazzhotzzwaterzzboilerzzsystem?zz-zzans-AirzzControl

Inzzazzstemzzboilerzzsystem,zzthezzunitzzthatzzturnszzbezzburnerzzonzzandzzoffzzbasedzzonzzsteam
zzpressurezziszzthe:zz-zzans-PressurezzControl

Ifzzwaterzzinzzthezzgaugezziszznotzzvisiblezzbecausezzofzzfailurezzofzzthezzfeedzzwaterzzsupply,zzw
hatzzshouldzzbezzdone?zz-zzans-Shutzzoffzzthezzfuelzztozzthezzburnerzzandzzsecurezzthezzboiler.

Whatzzconditionszzarezznecessaryzztozzcausezzazzfurnacezzexplosion?zz-zzans-
Accumulationzzofzzunburnedzzfuel,zzoxygenzzandzzanzzignitionzzsource

ThezzLWCOzzshouldzzbezztested:zz-zzans-Daily

Gaugezzpressurezzpluszz14.7zzpsizziszzcalledzzwhat?zz-zzans-Absolutezzpressure

Thezzevaporationzzofzz34.5zzpondszzofzzwaterzzperzzhourzzfromzzandzzatzzazztemperaturezzofzz2
12zzdegreeszzFahrenheitzziszzdefinedzzas:zz-zzans-Onezzboilerzzhorsepower

Whenzzazzsafetyzzvalvezzopenszzandzzcloseszzrapidlyzzitzziszzreferredzztozzaszz-zzans-Chattering

Furnacezzexplosionszzarezzcausedzzbyzzazzbuildupzzofzzcombustiblezzgases,zzorzzvaporszzinzzt
hezzcombustionzzchamber,zzwhatzziszzthezztermzzusedzztozzremedyzzthiszzcondition?zz-zzans-
Purging

Whyzziszzazzpigtailzzorzzsiphonzzrequiredzzinzzsteamzzpressurezzgaugezzlines?zz-zzans-
tozzprotectzzthezzgaugezzfromzzazzhighzztemperature.

Inzzazzstemzzboilerzzsystem,zzwhatzziszzthezztermzzusedzzforzzreplacingzzthezzwaterzzthatzzhaszzb
eenzzlostzzbyzzblowingzzdownzzthezzboilerzzthroughzzleakszzinzzthezzsystem?zz-zzans-
Azzmakezzupzzwater

Onzzsteamzzboilerzzsystem,zzwhyzzarezzbottomzzblowzzdownzzvalveszzinstalledzzatzzthezzlowestz
zpointzzofzzthezzwatersidezzofzzboilers?zz-zzans-Tozzremovezzsludgezzandzzsediment.

Boilerzzheatingzziszzdefiningzzaszz:zz-zzans-
Waterzzonzzonezzsidezzhotzzgaseszzonzzthezzotherzzside.

Inzzazzfirezztubezzboiler,zzthezzwaterzz-zzans-Surroundszzthezztubes

Whenzzthezzbottomzzblowzzdownzzvalveszzarezzusedzzonzzazzsteamzzboiler,zzwhatzzvalvezzlocat
edzzclosetzztozzthezzboilerzzshell?zz-zzans-Thezzquickzzopeningzzvalve

Whatzziszzthezzfunctionzzofzzanzzautomaticzzcityzzwaterzzfeederzzonzzazzlowzzpressurezzboiler?zz-
zzans-Tozzcontrolzzwaterzztozzthezzfeedzzwaterzztank

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Uploaded on: August 19, 2025
Number of pages: 6
Written in: 2025/2026
Type: Exam (elaborations)
Contains: Questions & answers

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