Musi wa3 Chivabvu 2023, EPA yakaburitsa mutemo wakarongwa muFederal Register wekurambidza kushandiswa kwakawanda kwemethylene chloride.
Mvumo yeEPA yemutemo wakarongwa yakapihwa pasi peToxic Substances Control Act (TSCA), uye dichloromethane ndiyo kemikari yechipiri ine njodzi inodzorwa pasi pemaitiro ekugadzirisa akagadzirwa naFrank R. Lautenberg. Mutemo weKuchengetedza Makemikari wezana remakore rechi21 wegore ra2016, zvichitevera chirongwa chesangano chekudzivirira vanhu kubva pakusvibiswa neasbestos gore rapfuura.
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 mukugadzira hydrofluorocarbons (HFCs)32, iyo inoshandiswa mumafiriji akasanganiswa kutsiva zvinhu zvine mukana wepamusoro wekudziya kwepasi rose.
Vanhu vanosvika 85 vakafa nekuda kwekusangana ne methylene chloride zvakanyanya kubvira muna 1980, vazhinji vavo vari vashandi vekondirakiti yekuvandudza dzimba avo vakadzidziswa zvizere uye vakashongedzerwa nemidziyo yekudzivirira, sekureva kweEnvironmental Protection Agency.
Kuongororwa kwenjodzi kwe dichloromethane kusina kusimbiswa kwakaitwa nesangano iri kwakakonzerwa nenjodzi dzine chekuita nevashandi, vasiri vashandisi vehunyanzvi (vashandi vari pedyo asi vasina kusangana zvakananga nekemikari), vatengi, uye avo vari pedyo nenzvimbo yekushandiswa nemutengi. Environmental Protection Agency yakaratidza njodzi dzemigumisiro yakaipa pahutano hwevanhu, kusanganisira chepfu yetsinga, migumisiro yechiropa nekenza kubva mukufema, uye kusangana neganda nemethylene chloride.
Mitemo yakarongwa yekugadzirisa njodzi ichakurumidza kuderedza kugadzirwa, kugadziriswa uye kugoverwa kwemethylene chloride kune zvese zvinoshandiswa nevatengi uye kushandiswa kwakawanda kwemaindasitiri nemabhizimisi, mazhinji acho achashandiswa zvizere mukati memwedzi gumi nemashanu. Pakushandiswa kwakawanda kwemethylene chloride uko EPA inokurudzira kurambidza, ongororo yayo yakaratidza kuti dzimwe nzira dzemutengo uye kushanda zvakanaka dzinoshandiswa pane zvigadzirwa zvemethylene chloride dzinowanzo kuwanikwa.
"Sainzi iri shure kwemethylene chloride yakajeka uye kusvibiswa kunogona kukonzera migumisiro yakakomba kuhutano uye kunyange rufu, izvo zviri kuitika kumhuri dzakawanda dzakarasikirwa nevadikanwi nekuda kwechepfu yakakomba," akadaro Mutungamiriri weEPA Michael S. Regan. mumashoko epepanhau esangano. "Ndosaka EPA iri kutora danho nekukurudzira kuchengetedza hutano hwevashandi nekuisa mitemo yakaoma yebasa iyo yaizorambidza kushandiswa kwakawanda kwekemikari iyi uye kuderedza kusvibiswa mune dzimwe dzese. Bata nesu. Kurambidzwa uku kwenhoroondo kunoratidza kufambira mberi kukuru kwatakaita mukuita dziviriro itsva dzekuchengetedza makemikari uye kutora matanho akatorwa kwenguva refu ekuchengetedza hutano hweveruzhinji zviri nani."
"Panyaya dzekugadzira maindasitiri, kugadzira maindasitiri, uye kushandiswa kwenyika iyo EPA isina kuronga kurambidza, EPA iri kupa chirongwa chekudzivirira makemikari munzvimbo yebasa chine miganhu yakasimba yekushandiswa kwemakemikari kuti idzivirire vashandi zviri nani," yakadaro mumashoko ayo. "EPA yakagamuchira ruzivo rweindasitiri runoratidza kuti zvimwe zvivako zvinogona kutotevedzera miganhu yakasimba yekushandiswa kwemethylene chloride. Izvi zvinodiwa zvinobvumira kuenderera mberi kwekushandiswa kwemethylene chloride kugadzira makemikari akakosha mukuderedza kuedza kwekuchinja kwemamiriro ekunze sezvakatsanangurwa muUS Innovation and Manufacturing Report. Chiito Chakakosha. Mafiriji anodzivirira mamiriro ekunze nemamwe makemikari anoita basa rakakosha mukurwisa shanduko yemamiriro ekunze, uye mutemo weEPA unotsigira kuedza kuri kuitwa kuderedza kusvibiswa kwemhepo."
Pamusoro pezvo, EPA inoratidza kuti mamwe mashandisirwo e dichloromethane anodiwa neNASA, DOD neFAA anoramba achidzorwa zvakanyanya munzvimbo yebasa, sezvo kusvibiswa kunogona kuderedzwa zvakakwana mumamiriro ezvinhu akaoma aya kuderedza njodzi kuvashandi zvakanyanya sezvinobvira.
"Kurambidzwa kwakarongwa uye zvirambidzo zvichadzivirirawo nzanga kubva pakusangana nemethylene chloride," akadaro mashoko acho. "Environmental Protection Agency, ichishandisa makore matanhatu eruzivo rwekusvibiswa kwechepfu, yakaona nzvimbo shoma sedzinogona kuva nenjodzi kunharaunda dzakakomberedzwa nefenzi. Kurambidzwa kuri mumutemo weEPA kuchavhara kushandiswa kwemethylene chloride munzvimbo zhinji idzi, izvo chaizvoizvo zvinogona kuva njodzi kunharaunda."
Mashoko pamusoro pemutemo wakarongwa achagamuchirwa kuburikidza neFederal Electronic Rulemaking Portal kusvika Chikunguru 3, 2023, nhamba yekupinda EPA-HQ-OPPT-2020-0465.
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