Hauv kev lag luam, kev nyab xeeb kev txwv ntawm hydrogen sulfide (H₂S) yuav tsum nruj me ntsis ua raws li cov qauv kev ua haujlwm, thaum tseem suav nrog cov kev cai tshwj xeeb ntawm kev lag luam sib txawv.
1.Cov roj thiab roj kev lag luam
Offshore drilling platforms / refineries:
- Tswb pib: Feem ntau, ob theem ntawm lub tswb raug teeb tsa:
- Theem 1 tswb: 10 ppm (qhia txog kev pheej hmoo ntawm kev tawg).
- Lub tswb thib ob: 15 ppm (Kev khiav tawm raug yuam).
Confined Spaces (xws li cov tso tsheb hlau luam): Ua ntej nkag, yuav tsum kuaj xyuas. H₂S concentration yuav tsum tsawg dua 5 ppm thiab tsis tu ncua saib xyuas.
2. Kev kho dej phwj tuaj thiab kev lag luam tshuaj
Qhov chaw qhib: Tsawg dua los yog sib npaug li 10 ppm raug tso cai (tab sis yuav tsum hnav lub tshuab nqus tsev).
Sludge kho chav: Cov concentration yuav nce sharply. Yuav tsum tau kho cov cuab yeej thiab cov tshuab ua pa.
Cov nroj tsuag tshuaj (sulfide ntau lawm): Ua raws li 1 ppm TWA tus qauv ntawm ACGIH (vim muaj kev pheej hmoo siab dua ntawm kev raug mob ntev -).
3.Kev ua haujlwm mining thiab tunneling
Kev ua haujlwm hauv av: Kev ua pa thaum muaj xwm txheej ceev yuav tsum tau pib thaum H₂S concentration siab dua lossis sib npaug li 5 ppm, thiab cov haujlwm yuav tsum tau nres thaum nws siab dua lossis sib npaug li 10 ppm.
4. Cov khoom siv tiv thaiv thiab kev soj ntsuam xyuas
(1) Cov khoom siv kuaj:
Portable detector: Rau kev siv tus kheej, tiag - lub tswb moos (pom zoo: 0-100 ppm).
Tsau detector: ntsia rau hauv cov cheeb tsam uas muaj cov pa tawm (xws li chav twj tso kua mis thiab cov tso tsheb hlau luam), nws txuas nrog lub tshuab ua pa.
(2) Kev tiv thaiv ua pa:
10-50 ppm: Ib nrab daim npog qhov ncauj + kua qaub roj lim cartridge (xws li 3M 60926).
>50 ppm: Lub tshuab ua pa zoo siab (SCBA) lossis lub tshuab ua pa ntev yuav tsum tau siv.
(3) Kev cob qhia thiab kev xyaum:
Txhua tus neeg ua haujlwm yuav tsum paub txog lub cev thiab tshuaj lom neeg ntawm H₂S, kev khiav tawm thiab kev ua haujlwm ntawm lub plawv dhia (CPR).
Portable hydrogen sulfide gas detector plays lub luag haujlwm tsis tuaj yeem hloov pauv hauv thaj chaw xws li kev lag luam, kev tiv thaiv ib puag ncig, thiab kev ruaj ntseg rau pej xeem. Lawv cov txiaj ntsig tseem ceeb yog nyob ntawm - lub sijhawm saib xyuas cov concentration ntawm cov pa phem, tiv thaiv cov xwm txheej hnyav xws li lom, tawg, thiab hluav taws, thiab ua kom muaj kev nyab xeeb ntawm cov neeg ua haujlwm thiab kev ua haujlwm ruaj khov ntawm cov chaw tsim khoom.