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STCW Firefighting Exam Questions and Answers
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STCW Firefighting Exam Questions and Answers
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STCW Firefighting Exam Questions andAnswer
The iifire iitetrahedron iicomponents iiare: ii- iiAnswers ii-fuel, iioxygen, iiheat, iichemical
iireaction. iiIf iiyou iiremove iione iiside, iithe iifire iigoes iiout
Theory iiof iiFire ii- iiAnswers ii-fire iiis iia iirapid iiself iisustaining iioxidation iiaccompanied iiby
iiheat ii& iilight iiof iivarying iiintensities
gases iiproduced iiby iicombustion ii- iiAnswers ii-carbon iimonoxide, iicarbon iidioxide, iisulfur
iidioxide
how iimuch iioxygen iimust iimake iiup iiin iiatmosphere iito iiburn ii- iiAnswers ii-at iileast ii16%
ii(12% iifor iismoldering iifire)
Fire iiclasses; iiA, iiB iiC, iiand iiD ii- iiAnswers ii-A: iiordinary iicombustible iimaterials, iiwood,
iipaper, iicloth
B: iiflammable ii& iicombustable iiliquids, iigases, iigreases
C: iilive iielectrical iifires
D: iicombustable iimetals iisuch iias iimagnesium iior iisodium
Fire iiclasses iiextinguished iiby ii- iiAnswers ii-A: iicooling ii(water iior iimulti iipurpose iidry
iichemical)
B: iismothering, iicooling, iistopping iichain iireaction ii(CO2 iiextinguisher, iidry iichemical
iiextinguisher, iifoam, iihalon)
C: iiturn iioff iiall iielectrical iior iipowered iiequipment iithen iifight iifire iias iiA iior iiB iifires ii(CO2,
iidry iichemical, iior iihalon)
D: iichemical iipowders
Flashpoint ii- iiAnswers ii-Lowest iitemperature iiat iiwhich iia iifuel iigives iioff iiflammable
iivapors iiin iisufficient iiquantity iito iiignite ii& iiflash iiacross iithe iisurface iiof iithe iifuel
Flashpoint iiof iidifferent iifuels ii- iiAnswers ii-gasoline ii(-45 iiF)
diesel ii(110 iiF)
What iiburns? ii- iiAnswers ii-vapor ii- iinot iifuel
, Conduction ii- iiAnswers ii-The iidirect iitransfer iiof iiheat iifrom iione iisubstance iito iianother
iisubstance iithat iiit iiis iitouching.
Prevent iiby iiremoving iior iicooling iicombustibles
Convection ii- iiAnswers ii-The iitransfer iiof iiheat iiby iithe iimovement iiof iia iiheated iiair iior
iiliquid
Prevent iiby iiclosing iiventilation, iiladder iiwells, iidoors
Radiation ii- iiAnswers ii-The iitransfer iiof iienergy iiby iielectromagnetic iiwaves iiwithout iian
iiintervening iimedium
Prevent iiby iiputting iia iibarrier iibetween iithe iifire iiand iicombustibles ii(water, iidoors, iifog,
iietc)
Direct iiflame iicontact ii- iiAnswers ii-combination iiof iiheat iitransfer iiby iiconvection ii&
iiradiation iiat iiclose iirange
Phases iiof iifire iidevelopment ii- iiAnswers ii-ignition
growth
flashover
fully iideveloped iifire
Smoldering iior iidecay
ignition ii- iiAnswers ii-4 iielements iiof iifire iitetrahedron iicome iitogether iiand iiflaming
iicombustion iibegins
growth ii- iiAnswers ii-a iifire iiplume iibegins iito iiform iiabove iiburning iifuel. iiAir iidrawn iiinto
iiplume iiand iiconvection iicauses iiheated iigases iito iirise ii- iicontinues iiof iienough iifuel
iiand iioxygen iiare iiavailable
flashover ii- iiAnswers ii-A iirapid iitransition iifrom iithe iigrowth iistage iito iithe iifully
iideveloped iistage.
Occurs iiat ii1000F-1500F
Signs iiof iiFlashover ii- iiAnswers ii-if iiheat iiis iihot iienough iito iimake iiyou iidrop iito iiyour
iiknees iior iirollover iiwhich iiis iismall iiflashes iiof iiflame iiappear iiat iiceiling iilevel iior iismoke
iipouring iiout iiof iitop iiof iiwindow iior iidoorway
fully iideveloped iifire ii- iiAnswers ii-all iicombustible iimaterials iiin iicompartment iiare
iiinvolved iiin iifire ii- iiburning iifuels iiare iireleasing iimaximum iiamount iiof iiheat iipossible
iiand iiproduces iilarge iiamounts iiof iiunburned iifire iigases
Temperature iiof iia iinormal iifire ii- iiAnswers ii-coal iiburns iiat ii3,590F
wood iiburns iiat ii300F iibut iican iireach iias iihigh iias ii1600 iiF
hydrocarbon iigenerates ii1832 iiF iiwithin ii10 iiminutes iiof iiignition
most iicombustable iimetals iiin iifire iiproduce ii5000F-8,500F
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