Tus qauv kuaj pom tus nqi ntawm lub tshuab kuaj tshuaj lom thiab phom sij tsis yog ib daim duab ruaj khov, tab sis yog txiav txim siab raws li qhov tshwj xeeb ntawm cov roj raug kuaj pom, cov ntawv thov scenario, thiab cov qauv kev nyab xeeb cuam tshuam.
Cov hauv qab no yog cov4 hauv 1 Gas Detector PortableKev kuaj xyuas tus qauv tus nqi ntawm qee cov pa phem rau koj siv: Hauv ib puag ncig sab hauv tsev, qhov kev nyab xeeb ntawm carbon monoxide (CO) feem ntau yuav tsum tsis pub tshaj 70ppm. Tus qauv kev nyab xeeb rau hydrogen sulfide (H2S) nyob rau hauv kev lag luam ib puag ncig feem ntau yog 10ppm. Tsawg oxygen concentration tswb taw tes, hypoxia tswb 19.5% VOL; High oxygen concentration alarm point, oxygen enrichment tswb 23.5% VOL.Lub sab sauv txwv ntawm kev nyab xeeb concentration ntawm ammonia (NH3) nyob rau hauv ib txwm huab cua ib puag ncig yog 25ppm. Raws li cov ntsiab lus tseem ceeb ntawm cov pa roj carbon monoxide, qhov tawg txwv ntawm methane (CH4) yog nruab nrab ntawm 5% LEL thiab 15% LEL. Yog li ntawd, tag nrho cov concentrations nyob rau hauv no ntau yam yuav tsum tau muab siab heev.
1. Cov pa roj carbon monoxide (CO):
Nyob rau hauv ib puag ncig sab hauv tsev, nws qhov kev nyab xeeb concentration yuav tsum tsis pub tshaj 70ppm (qhov ib lab).
Thaum cov concentration nce mus txog 150-200 PPM, tib neeg lub cev yuav muaj mob taub hau, kiv taub hau, xeev siab thiab tej zaum yuav ua rau coma.
Thaum cov concentration siab tshaj 400ppm, nws yuav ua rau tuag taus.
2. Hydrogen sulfide (H2S):
Tus qauv kev nyab xeeb hauv ib puag ncig kev lag luam feem ntau yog 10ppm.
Hydrogen sulfide yog cov roj tsis muaj xim thiab muaj kuab lom nrog cov ntxhiab tsw ntawm cov qe lwj. Txawm li cas los xij, thaum nws cov concentration siab dhau lawm, nws yuav ua rau tib neeg tsis hnov tsw tsw, yog li ua rau lawv saib tsis taus nws.
3. Sulfur dioxide (SO2):
Nyob rau hauv ib puag ncig sab nraum zoov, qhov nruab nrab txhua hnub ntawm sulfur dioxide feem ntau yuav tsum tsis pub tshaj 0.15mg / m³; txwv tsis pub, nws yuav muaj kev cuam tshuam tsis zoo rau cov nroj tsuag thiab tib neeg kev noj qab haus huv.
4. Ammonia (NH ₃):
Feem ntau, qhov txwv siab tshaj ntawm kev nyab xeeb ntawm ammonia yog 25ppm.
Ammonia muaj ntxhiab tsw ntxhiab, tab sis ntev - raug los yog thaum lub concentration siab dhau tuaj yeem ua rau lub qhov muag, tawv nqaij thiab ua pa puas.
5.Methane (CH4):
Raws li cov ntsiab lus tseem ceeb ntawm cov pa roj carbon monoxide, nws qhov kev txwv tsis pub tawg yog feem ntau ntawm 5% LEL thiab 15% LEL. Yog li ntawd, lub concentration nyob rau hauv no ntau yam yuav tsum tau muab siab heev.
6. Cov pa oxygen (O2):
Thaum cov pa oxygen poob qis dua thawj - theem ceeb toom ntawm 19.5% VOL, lub tswb tau tshwm sim, ceeb toom cov neeg ua haujlwm tias lawv yuav hnov kiv taub hau thiab tsis muaj zog, thiab yuav tsum tau ua pa tam sim lossis khiav tawm.
Thaum cov pa oxygen concentration ntau tshaj qhov ntsuas thib ob ntawm 23.5% VOL, lub tswb tau tshwm sim, ceeb toom qhov kev pheej hmoo ntawm hluav taws thiab tawg.
Tsis tas li ntawd, rau cov khoom siv tshuaj lom thiab teeb meem roj, cov nqi ceeb toom feem ntau yog teeb tsa thiab. Piv txwv li:
Thawj lub tswb teeb tsa tus nqi: Nws yuav tsum tsawg dua lossis sib npaug rau 100% OEL (kev txwv kev ua haujlwm), lossis tsis pub ntau tshaj 5% IDLH (kev xav tam sim ua rau lub neej thiab kev noj qab haus huv) nyob ntawm qhov xwm txheej.
Qhov thib ob lub tswb teeb tsa tus nqi: yuav tsum tsawg dua lossis sib npaug rau 200% OEL, lossis tsis tshaj 10% IDLH nyob ntawm qhov xwm txheej.