Musi wa3 Chivabvu 2023, EPA yakaburitsa mutemo wakarongwa muFederal Register wekurambidza kushandiswa kwakawanda kwemethylene chloride.
, uye dichloromethane ndiyo kemikari yechipiri ine njodzi inodzorwa pasi pemaitiro ekugadzirisa akagadzirwa naFrank R. Lautenberg. Mutemo weKuchengetedza Makemikari wezana remakore rechi21 wegore ra2016. Gore rapera, sangano iri rakaronga matanho ekudzivirira vanhu kubva pakusvibiswa neasbestos.
Dichloromethane inoshandiswa nenzira dzakasiyana-siyana, kusanganisira kushandiswa nevatengi senge aerosol degreasers uye brush cleaners yependi nependi, kushandiswa kwekutengeserana senge adhesives uye sealants, uye kushandiswa kwemaindasitiri mukugadzira mamwe makemikari. Semuenzaniso, dichloromethane inoshandiswa sekemikari pakati mukugadzirwa kwehydrofluorocarbons (HFCs) 32, iyo inoshandiswa mumafiriji akasanganiswa akagadzirirwa kutsiva zvinhu zvine mukana wepamusoro wekupisa kwepasi rose.
Varwere vanosvika 85 vakafa nekuda kwekubatwa nemethylene chloride zvakanyanya kubvira muna 1980, sekureva kweEnvironmental Protection Agency, vazhinji vavo vari vashandi vekondirakiti yekuvandudza dzimba, kunyangwe pavakanga vakadzidziswa zvizere uye vaine midziyo yekudzivirira muviri.
Tsananguro yesangano iri yengozi ye dichloromethane haina musoro uye yakavakirwa panjodzi dzine chekuita nevashandi, vashandi vehunyanzvi vasiri kushandisa kemikari iyi (vashandi vari pedyo asi vasiri kusangana nekemikari iyi zvakananga), vatengi neavo vari pedyo nevatengi. Environmental Protection Agency yakaona njodzi yemigumisiro yakaipa pahutano hwevanhu kubva mukufema uye kusangana neganda ne methylene chloride, kusanganisira chepfu muuropi, migumisiro pachiropa, uye kenza.
Mitemo yekutarisira njodzi yakarongwa ichakurumidza kuderedza kugadzirwa, kugadziriswa uye kugoverwa kwemethylene chloride kune ese mashandisirwo evatengi uye akawanda mashandisirwo emaindasitiri neemabhizinesi, mazhinji acho achazadzikiswa zvizere mukati memwedzi gumi nemashanu. Ongororo yakaratidza kuti kune akawanda mashandisirwo emethylene chloride ayo EPA yakaronga kurambidza, zvimwe zvigadzirwa zvinowanzo kuwanikwa zvine mutengo wakafanana uye kushanda zvakanaka sezvigadzirwa zvemethylene chloride.
"Humbowo hwesainzi hwemethylene chloride hwakajeka, uye kusangana nemethylene chloride kunogona kukonzera migumisiro yakakomba pahutano, kunyangwe rufu, kuvanhu vazhinji," mukuru weEPA Michael S. Regan akadaro munhau kubva kusangano. "Ndosaka EPA iri kutora danho rekukurudzira kurambidzwa kwekushandiswa kwakawanda kwekemikari iyi, pamwe nekuchengetedza hutano hwevashandi uye kuderedza kusangana nayo mune dzimwe mamiriro ese nekuunza kudzora kwakasimba pabasa. Kurambidzwa uku kwenhoroondo kunoratidza kufambira mberi kukuru kwatakaita mukuisa dziviriro itsva dzekuchengetedza makemikari uye kutora matanho akamirirwa kwenguva refu ekuchengetedza hutano hweveruzhinji zviri nani."
"Panyaya dzekugadzira maindasitiri, kugadzira maindasitiri, uye kushandiswa kwenyika iyo EPA isingakurudzire kurambidzwa, EPA inopa chirongwa chekudzivirira makemikari munzvimbo yebasa chinosanganisira miganhu yakasimba yekusvibiswa kuti idzivirire vashandi zviri nani," yakadaro mumashoko ayo. inogona kunge yatosangana nemiganhu yakaoma yekusvibiswa kwemethylene chloride. Izvi zvinodiwa zvichabvumira methylene chloride kuti irambe ichigadziriswa kuti igadzire makemikari akakosha mukurwisa kudziya kwepasi rose. Mafiriji anodzivirira mamiriro ekunze nemamwe makemikari anoita basa rakakosha mukurwisa shanduko yemamiriro ekunze. , uye mutemo weEPA unotsigira kuedza kuderedza utsi hwemhepo."
Pamusoro pezvo, EPA inokurudzira kuti mamwe mashandisirwo e dichloromethane anodiwa neNASA, DOD neFAA arambe achidzorwa zvakanyanya munzvimbo yebasa, sezvo kusvibiswa kwacho kuchigona kuderedzwa zvakanyanya mumamiriro ezvinhu akaoma aya, nokudaro zvichideredza njodzi kuvashandi.
"Kurambidzwa kwakarongwa uye zvirambidzo zvichadzivirirawo nzanga kubva pakusangana nemethylene chloride," akadaro mashoko acho. "Ichishandisa makore matanhatu eruzivo rwekusvibiswa kwechepfu, EPA yakaona nzvimbo shoma sedzinogona kuva nenjodzi kunharaunda dzakakomberedzwa nefenzi. Kurambidzwa kuri mumutemo weEPA kuchavhara kushandiswa kwemethylene chloride munzvimbo zhinji dzakadaro, zvichibvisa njodzi kunjodzi inogona kuitika kunharaunda dziri pedyo."
Mashoko pamusoro pemutemo wakarongwa achagamuchirwa kuburikidza neFederal Electronic Rulemaking Portal, faira nhamba EPA-HQ-OPPT-2020-0465, zuva rekupedzisira raChikunguru 3, 2023.
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