Lub teeb nyem ntawm cov kua hluav taws xob yog qhov kub qis tshaj plaws uas cov kua vapor yuav ignite yog tias muaj qhov hluav taws kub. Flammable fuels feem ntau tso tawm qee theem ntawm vapor thaum lawv kub nce, thiab lawv dhau los ua pa ntau dua. Lub flash point yog lub point uas txaus vapor yuav ignite.
Kev nyab xeeb nyob rau hauv cia cov kua flammable yog qhov tseem ceeb tshaj plaws. Koj cov neeg ua haujlwm (tshwj xeeb tshaj yog cov neeg ua haujlwm rau WH&S) yuav tsum nkag siab zoo thiab ua tib zoo saib xyuas qhov taw tes ntawm cov roj. Txhawm rau kom koj pib, nyob rau ntu tom ntej peb tau muab tso ua ke qee cov piv txwv ntawm cov kua nplaum nplaum thiab lawv cov ntsiab lus flash, los ntawm qis tshaj mus rau siab tshaj.
Piv txwv ntawm cov khoom siv hluav taws xob nrog cov ntsiab lus flash hauv qab no 0.
Koj yuav tsum tau ua cov khoom tawg yooj yim no nrog ceev faj heev vim lawv tuaj yeem ignite ntawm qhov kub thiab txias. Feem ntau, qhov chaw nyab xeeb, tswj qhov kub thiab txias yuav tsum tau tiv thaiv hluav taws thiab tawg.
Roj av flash point
Lub flash point ntawm roj av yog -43 degree . Nws mus yam tsis tau hais tias yuav tsum tau ceev faj heev thaum khaws cov roj av. Ua ntej, khaws cia rau hauv ib lub tsev deb ntawm koj qhov chaw nyob lossis qhov chaw ua lag luam. Qhov thib ob, kaw nws hauv lub thawv ntim tshuaj lom neeg lossis cov khoom siv hluav taws xob kom tsis muaj leej twg siv tau yam tsis muaj koj qhov kev paub dhau los. Thaum kawg, yog tias koj hloov cov roj av los ntawm lub tank mus rau lub tsheb, ib txwm ua rau sab nraum qhov chaw uas cov vapors tuaj yeem khiav mus rau saum huab cua.
Acetone flash point
Acetone yog lwm qhov piv txwv ntawm cov kua hluav taws xob, nrog lub teeb nyem tsawg heev ntawm -20 degree . Tshaj qhov kub no, tsuas yog 2.5% acetone absorbed hauv huab cua tuaj yeem ua rau tawg. Yog li ntawd, nws mus yam tsis tau hais tias qhov ntsuas kub tswj tau zoo tshaj plaws. Cov thawv ntim hlau lossis iav yog qhov zoo tshaj plaws rau khaws cia acetone, lossis yog siv cov yas, xaiv cov thawv uas tsis tshua muaj polyethylene (LDPE) kom khaws cia ntev.
Benzene flash point
Benzene muaj lub teeb nyem ntawm qhov txias -12 degree, ua rau nws muaj qhov kub hnyiab heev. Nws yuav tsum tau muab cia rau hauv qhov chaw txias, qhuav nrog qhov cua zoo. Kev nqus pa ntawm cov pa roj benzene tau txuas rau cov ntshav tsis txaus xws li ntshav ntshav thiab leukemia, yog li yuav tsum paub txog kev cia khoom tsis txaus thiab raug rau lub sijhawm ntev. Hazchem** pom zoo kom khaws cov benzene hauv cov khoom siv hluav taws xob ua kua uas ua tau raws li AS1940-2017.
Piv txwv ntawm cov khoom flammable nrog cov ntsiab lus flash ze rau chav tsev kub.
Ethanol flash point
Lub flash point ntawm ethanol yog 16.6 degree, uas yog tej zaum qis dua chav tsev kub. Thaum twg siv ethanol, xyuas kom koj ua li ntawd hauv qhov chaw uas muaj cua zoo. Khaws rau hauv qhov chaw txias, qhuav thiab xyuas kom thaj chaw muaj qhov cua txaus los tiv thaiv vapor leaks.
Methanol flash point
Lub flash point ntawm methanol yog nyob nruab nrab ntawm 11 thiab 12 degree. Khaws rau hauv qhov chaw txias, qhuav thiab xyuas kom meej tias nws tau sau meej meej tias muaj tshuaj lom thiab tawg. Sim ua kom methanol kom deb ntawm cov khoom siv hluav taws xob thiab khaws cov tso tsheb hlau luam uas nws khaws cia hauv av.
kerosene flash point
Lub flash point ntawm kerosene yog nyob rau ntawm ntug ntawm cov nplaim hluav taws kub ntawm 38 degree. Rau kev txheeb xyuas yooj yim, kerosene yuav tsum muab khaws cia rau hauv cov thawv yas xiav - siv cov thawv hlau tuaj yeem ua rau muaj kab mob. Cov thawv ntim khoom yuav tsum huv thiab kaw txhua lub sijhawm.
Piv txwv ntawm cov khoom flammable nrog cov ntsiab lus siab dua.
Diesel flash point
Diesel muaj qhov taw tes ntawm 52 degree mus rau 96 degree thiab pom tau tias siab txaus kom tsis muaj hluav taws xob nyob hauv ntau qhov chaw (li no nws siv hauv compression ignition engines). Txawm li cas los xij, kev ceev faj thiab kev ruaj ntseg tseem yuav tsum tau ua. Diesel roj yuav tsum tau sau kom meej thiab sau tias "Fflammable Liquid C1". Peb pom zoo kom siv Lubemasta txee rau ib txhij cia thiab faib cov roj diesel.
Biodiesel flash point
Biodiesel muaj qhov taw tes ntawm 130 degree, ua rau nws ruaj khov. Nws yuav tsum tau muab cia rau hauv qhov chaw txias, qhuav, tab sis yuav tsum paub tias biodiesel feem ntau muaj lub neej txee ntawm 3-6 hli - yog li siv nws sai li sai tau, lossis xyuas kom meej tias nws yuav tsum tau kuaj xyuas kom tsis txhob muaj kab mob.
Lubricating roj flash point
Lub flash point ntawm lubricating roj yog nyob ib ncig ntawm 187 degree, ua rau nws kuj tsis-flammable. Txawm li cas los xij, tseem yuav tsum tau ceev faj cia. Ntxiv dua thiab, nyob rau hauv qhov chaw txias, qhuav yog koj thawj koom ruam zoo tshaj. Yog tias ua tau, muab tso rau hauv kab rov tav ntawm lub ntim sab nraud thiab nco ntsoov xyuas kom meej tias nws tau sau tseg.
