Perchlorethylene (PCE), tseem hu ua tetrachlorethylene los yog "perc," yog ib qho tseem ceeb muaj kuab tshuaj siv dav hauv kev tu qhuav, hlau degreasing, thiab lwm yam kev tsim khoom siv. Raws li nrog ntau cov tshuaj siv hauv kev lag luam, kev nkag siab txog nws cov kev pheej hmoo ntawm kev noj qab haus huv thiab cov kev txwv raug raug yog qhov tseem ceeb rau kev tswj hwm qhov chaw ua haujlwm nyab xeeb. ACGIH TLV cov lus qhia ua haujlwm tseem ceeb rau kev tswj xyuas qhov chaw ua haujlwm raug Perchlorethylene (PCE) vapor.
Nkag siab txog Perchlorethylene (PCE) thiab Nws Cov Teebmeem Kev Noj Qab Haus Huv
Perchlorethylene (PCE) yog cov kua ntshiab, tsis muaj ntxhiab tsw qab me ntsis thiab muaj peev xwm hnyav heev. Nws yog txaus siab rau nws lub peev xwm los yaj cov roj, greases, thiab waxes zoo. Txawm li cas los xij, txuas ntxiv lossis rov ua dua rau Perchlorethylene (PCE) vapor tuaj yeem ua rau muaj teeb meem kev noj qab haus huv. Kev nqus pa lossis kev sib cuag ntawm daim tawv nqaij tuaj yeem ua rau khaus ntawm qhov muag, qhov ntswg, thiab caj pas, nrog rau kiv taub hau, qaug zog, thiab mob taub hau. Kev raug mob ntev ntev tau txuas rau lub siab thiab lub raum puas, nrog rau cov teebmeem ntawm lub hauv nruab nrab lub paj hlwb.
ACGIH TLV Cov Qauv rau Perchlorethylene (PCE) Vapor
ACGIH TLV (Threshold Limit Value), tsim los ntawm American Conference of Governmental Industrial Hygienists, muab kev taw qhia txog kev lees txais huab cua los tiv thaiv cov neeg ua haujlwm tuavPerchlorethylene (PCE). Qhov kev txwv no tau nthuav tawm raws li lub sijhawm - qhov hnyav nruab nrab (TWA) qhov siab tshaj 8 teev ua haujlwm.
Raws li ACGIH cov lus pom zoo, TLV rau Perchlorethylene (PCE) vapor yog 25 ppm (ib feem ntawm ib lab) raws li 8- teev TWA, nrog rau lub sijhawm luv luv (STEL) ntawm 100 ppm nyob rau lub sijhawm 15-feeb. Txawm hais tias tsis raug cai raug cai, cov txiaj ntsig no tau siv dav hauv cov qauv kev nyab xeeb ntawm kev ua haujlwm thiab tau tsim los txo cov kev pheej hmoo ntawm kev noj qab haus huv cuam tshuam nrog rau cov kuab tshuaj no.
Nov yog Cov Lus Qhia Ntawm ACGIH TLV Rau Perchlorethylene Vapor:
| Kev txwv tsis pub dhau | Lub Sijhawm Sijhawm | Nco ntsoov |
|---|---|---|
| TLV-TWA | 8-teev hnub ua haujlwm | 25 ppm |
| TLV-STEL | 15 feeb | 100 ppm |
Hauv kev xaus, thaumPerchlorethylene (PCE)tseem yog ib qho tseem ceeb ntawm kev lag luam hnyav, ua raws li cov lus qhia cuam tshuam xws li ACGIH TLV yog qhov tseem ceeb. Kev ua pa kom raug, cov cuab yeej tiv thaiv, thiab kev saib xyuas tuaj yeem pab tiv thaiv cov neeg ua haujlwm thiab ua kom muaj kev nyab xeeb ntawm kev ua haujlwm hauv ib puag ncig.