Cov neeg ua haujlwm kho dua tshiab yuav tsum xaiv lub ntsej muag zoo li cas?
Cov chaw kho dua tshiab yog plua plav cua daj cua dub ntawm silica, gypsum thiab random hlau shards -particles<5 µm that bore deep into lungs. US-EPA warns drywall dust causes "irritation to lungs, eyes and skin" and can even harbor asbestos in pre-1980 homes . A face shield therefore acts as the first mobile barrier, but only if matched to the hazard.
Kauj Ruam 1: Txheeb xyuas qhov xwm txheej
Drywall sanding → silica hmoov av + gypsum pos huab
Plasma txiav → ozone + hlau sparks
Xim stripping → hnyav txaws + VOC vapors
Kauj Ruam 2: Sib piv cov ntaub thaiv npog
Plua plav nkaus xwb: ntshiab polycarbonate visor, indirect-vent goggles hauv qab .
Plua plav + txaws: looj tsom iav + puv - lub ntsej muag tiv thaiv, tiv thaiv - pos huab txheej .
Spark/impact: ANSI Z87.1+ rated shield, puab tsaig-extension, IR-filter for plasma .
Kauj Ruam 3: Haum thiab xis nyob
Visor yuav tsum nkhaus ib txwm ua rau plaub muag - mus rau - puab tsaig, tiv thaiv plua plav bypass .
Adjustable headgear thiab anti-fog tawv tsho kom ntseeg tau 8-teev kev nplij siab .
Kauj Ruam 4: Kev tu
Yaug lub visor nrog dej tom qab txhua qhov ua haujlwm - cov plua plav ntub dej ua kom nplaum thaum ntub.
Replace when scratches impair vision >3 mm hla qhov chaw saib.
Cov ntaub thaiv npog raug hloov kho dua cov plua plav mus rau hauv kev tswj hwm, pom kev phom sij ua kom cov khoom kho kho kom zoo, ua raws thiab noj qab nyob zoo.
