Thaum Lub Tsib Hlis 3, 2023, EPA tau tshaj tawm tsab cai lij choj hauv Tsoom Fwv Teb Chaws Register kom txwv tsis pub siv cov tshuaj methylene chloride feem ntau.
EPA kev pom zoo rau txoj cai tau txais kev tso cai raws li Txoj Cai Tswj Tshuaj Tiv Thaiv Kab Mob (TSCA), thiab dichloromethane yog cov tshuaj thib ob uas nws txoj kev pheej hmoo raug tswj hwm raws li kev hloov kho uas tsim los ntawm Frank R. Lautenberg. Xyoo 21st Century Chemical Safety Act of 2016, tom qab lub koom haum tau ua raws li kev txav los tiv thaiv tib neeg los ntawm kev raug mob asbestos, tau tshaj tawm xyoo tas los.
Dichloromethane yog siv ntau txoj hauv kev, suav nrog cov neeg siv khoom siv xws li aerosol degreasers thiab txhuam cov tshuaj pleev xim rau cov xim thiab cov txheej txheem, kev lag luam kev lag luam xws li cov nplaum thiab cov sealants, thiab cov ntawv thov kev lag luam hauv kev tsim khoom ntawm lwm yam tshuaj. Piv txwv li, dichloromethane yog siv los ua cov tshuaj nruab nrab hauv kev tsim cov hydrofluorocarbons (HFCs) 32, uas yog siv rau hauv cov tub yees sib xyaw los hloov cov tshuaj uas muaj peev xwm ua rau lub ntiaj teb sov siab dua.
Tsawg kawg yog 85 tus neeg tau tuag los ntawm kev raug mob methylene chloride txij li xyoo 1980, feem ntau yog cov neeg ua haujlwm cog lus txhim kho tsev uas tau kawm tiav thiab nruab nrog cov cuab yeej tiv thaiv tus kheej, raws li Lub Chaw Tiv Thaiv Ib puag ncig.
Lub koom haum qhov kev soj ntsuam tsis txaus ntseeg txog kev pheej hmoo rau dichloromethane yog vim muaj kev pheej hmoo cuam tshuam nrog cov neeg ua haujlwm, cov neeg siv tsis zoo (cov neeg ua haujlwm uas nyob ze tab sis tsis ncaj qha rau cov tshuaj), cov neeg siv khoom, thiab cov neeg nyob ze rau cov neeg siv khoom qhov chaw siv. Lub Chaw Saib Xyuas Kev Tiv Thaiv Ib Cheeb Tsam tau txheeb xyuas cov kev pheej hmoo ntawm kev tsis zoo rau tib neeg kev noj qab haus huv, suav nrog neurotoxicity, siab thiab mob qog noj ntshav los ntawm kev nqus pa, thiab cov tawv nqaij raug rau methylene chloride.
Txoj cai tswj hwm kev pheej hmoo yuav txo qis sai sai rau kev tsim, ua thiab faib cov tshuaj methylene chloride rau txhua tus neeg siv khoom siv thiab feem ntau siv hauv kev lag luam thiab kev lag luam, feem ntau yuav ua tiav hauv 15 lub hlis. Rau feem ntau ntawm kev siv cov tshuaj methylene chloride uas EPA thov kom txwv tsis pub, nws cov kev soj ntsuam tau qhia tias cov nqi thiab kev ua tau zoo rau cov khoom siv methylene chloride feem ntau muaj.
"Kev tshawb fawb tom qab cov tshuaj methylene chloride yog qhov tseeb thiab qhov tshwm sim tuaj yeem ua rau muaj mob hnyav thiab tuag taus, uas yog qhov tseeb rau ntau tsev neeg uas tau ploj cov neeg hlub mus rau qhov mob hnyav," EPA Tus Thawj Coj Michael S. Regan tau hais. nyob rau hauv ib lub koom haum xov xwm tshaj tawm. "Yog vim li cas EPA tau nqis tes los ntawm kev thov los tiv thaiv kev noj qab haus huv ntawm cov neeg ua haujlwm los ntawm kev qhia txog kev tswj hwm kev ua haujlwm nruj dua uas yuav txwv tsis pub siv cov tshuaj no feem ntau thiab txo qis kev cuam tshuam rau lwm tus.
"Rau kev tsim khoom lag luam, kev tsim khoom lag luam, thiab kev siv tseemfwv qib siab uas EPA tsis tau hais kom txwv, EPA tab tom muab kev pabcuam tshuaj tiv thaiv chaw ua haujlwm nrog kev txwv nruj kom tiv thaiv cov neeg ua haujlwm zoo dua," nws hais hauv nqe lus. "EPA tau txais kev lag luam tawm tswv yim qhia tias qee qhov chaw yuav tau ua raws li cov kev txwv nruj dua methylene chloride raug txwv. Cov kev xav tau no yuav tso cai rau kev ua cov tshuaj methylene chloride txuas ntxiv los tsim cov tshuaj uas tseem ceeb los txo kev siv zog rau kev hloov pauv huab cua uas tau teev tseg hauv US Innovation thiab Manufacturing Report. Lub luag haujlwm hauv kev tawm tsam kev hloov pauv huab cua, thiab EPA txoj cai tau thov txhawb nqa kev siv zog txuas ntxiv los txo qis emissions. "
Tsis tas li ntawd, EPA qhia tias qee qhov kev siv dichloromethane xav tau los ntawm NASA, DOD thiab FAA txuas ntxiv tswj nruj hauv chaw ua haujlwm, vim tias qhov cuam tshuam tuaj yeem raug txo kom txaus hauv cov xwm txheej nyuaj no kom txo qis kev pheej hmoo rau cov neeg ua haujlwm ntau li ntau tau.
"Cov lus tshaj tawm txwv thiab kev txwv yuav tiv thaiv tib neeg los ntawm kev cuam tshuam rau methylene chloride," cov lus hais. "Lub Chaw Saib Xyuas Kev Tiv Thaiv Ib Cheeb Tsam, siv rau xyoo ntawm cov ntaub ntawv tso tawm tshuaj lom, tau txheeb xyuas cov chaw me me uas muaj feem cuam tshuam rau cov zej zog muaj laj kab. Qhov kev txwv tsis pub nyob hauv EPA txoj cai yuav suav nrog kev siv cov tshuaj methylene chloride txuas ntxiv ntawm feem ntau ntawm cov chaw no, uas yog qhov muaj feem cuam tshuam rau zej zog. "
Cov lus pom zoo ntawm txoj cai yuav raug lees txais los ntawm Tsoom Fwv Teb Chaws Electronic Rulemaking Portal kom txog thaum Lub Xya Hli 3, 2023, tus lej nkag EPA-HQ-OPPT-2020-0465.
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