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Ekitongore ky'okurinda eby'obuhangwa omuri America kikataho ekiteiso ky'okuzibira okukozesa omubazi gwa methylene chloride omu mirimo yoona ey'abakozesa n'omu mirimo mingi ey'amakorero n'eby'obushuubuzi. Ekiteiso ekisya nikiija bwanyima y'ekitongore eki kumaraho okucondooza aha kabi omu kwezi kwa ikumi n'ebiri 2022 ekyashangire ngu okunywa ebirungo nikibaasa kureetera amagara mabi nk'endwara z'ebihaha na kansa.
Methylene chloride neeshangwa omu bintu bitari bimwe na bimwe, otwariiremu ebikwato ebirikuhamya, ebirikusheenya erangi, n’ebirikwihaho amajuta. Kandi nikikozesibwa munonga nk’ekintu ekikuru omu kukora emibazi endiijo. Ekitongore ky’okurinda eby’obuhangwa omuri Amerika nikiteekateeka ngu abakozi abarikurenga 900,000 n’abaguzi obukaikuru 15 nibaguma nibatunga omubazi ogurikwetwa methylene chloride.
Ekirungo eki n’ekya kabiri kukyeberwa ahansi y’ebiragiro ebihindwirwemu eby’okurwanisa obutwa (TSCA), ebirikushaba ekitongore ky’okurinda eby’obuhangwa kureeba oburinzi bw’emibazi mirungi n’eriho ey’eby’obushuubuzi. Ekigyendererwa ky'ekitongore eki n'okumaraho okukora, okukora n'okujanjaaza methylene chloride omu myezi 15.
Ebimwe ebirikukoresibwa omu kukozesa methylene chloride nibiruga omu kuzibira oku, otwariiremu n’okugikozesa nk’omubazi. Nk’eky’okureeberaho, nikiija kugumizamu nikikoresibwa omu kuhanga ekirungo kya hydrofluorocarbon-32, ekyakozirwe nk’omuringo ogundi ogw’okuhinduraho ebindi ebiine obushoboorozi bw’okutagata kw’ensi yoona n’/nari okukyendeeza aha nkora ya ozone.
“Nitwikiriza ngu methylene chloride egumire erimu oburinzi bw’okukoresa omu mahe n’omu gavumenti,” Michal Friedhoff, omuhwezi w’omutegyeki wa ofiisi y’ekitongore ky’okurinda eby’obuhangwa (EPA) ey’okurinda emibazi n’okuzibira okushiisha, nikwo yaagizire omu ruteerane rw’abanyamakuru batakarangiriire. “EPA neija kwetenga kugira eki yaakora kurinda oburinzi bw’abakozi.”
Ebibiina ebimwe ebirikurwanirira eby’obuhangwa bikashemererwa n’ekiteekateeko kisya eki. Kwonka kandi boorekire okwerarikirira ahabw’okuruga omu kiragiro ekirikubaasa kuha orusa okugumizamu n’okukoresa methylene chloride haakiri emyaka ikumi erikwija.
Maria Doa, orikukurira eby'emibazi omu kitongore kya Environmental Defense Fund, agizire ngu okukozesa emibazi nk'egi kumara obwire buraingwa nikwija kugumizamu nikureetaho akabi aha byaro ebirikutuura haihi n'emyanya etaine nshonga. Doa agizire ngu ekitongore ky'eby'obuhangwa kishemerire kukyendeeza obwire bw'okushohozibwa narishi okutaho obuzibu obundi aha nshonga y'okushohoza methylene chloride kuruga omu bitongore ebi.
Beitu obwo, ekibiina ky'eby'obushuubuzi ekya American Chemistry Council, ekirikujwekyera abakozi b'emibazi, nikigira ngu ebiragiro ebiteirweho nibibaasa kukwata aha nkora y'okugaba emibazi. Ekibiina eki kyagira omukihandiiko ngu okukyendeeza ahakukora methylene chloride omu bwangu nikiija kurugamu okukyendeeza okurikurenga aha kicweka kimwe kya kabiri. Ekibiina eki kyagira ngu okusharaho oku nikubaasa kugira “ekizibu ky’amaani” aha makorero agandi nk’eby’emibazi, namunonga “abarikukora emibazi baaba bacwiremu kurekyera aho kukora ebintu byona.”
Methylene chloride n’emibazi ya kabiri aha mibazi 10 ei ekitongore ky’okurinda eby’obuhangwa kirikuteekateeka kukyebera kureeba yaaba neebaasa kureeta akabi aha magara g’abantu n’eby’obuhangwa. Eky’okubanza, n’amabaare g’omuhendo. Freedhoff agizire ngu ebiragiro by'ekintu kya kashatu, perchlorethylene, nibibaasa kushushana n'ebiragiro bisya bya methylene chloride, otwariremu okuzibira n'okurinda abakozi okugumire.