Ngokuqondene nezintambo ezine-voltage ephansi kanye nezintambo, zihlukaniswa ngokuyinhloko zibe izigaba ezimbili ngokuvumelana nenjongo yazo: izintambo zokwakha kanye nezintambo zemishini kagesi. Ocingweni lokwakha, kwakuyirabha yemvelo evalwe ngocingo olulukiwe lwe-asphalt oluhlanganiswe ngama-1960s. Kusukela ngeminyaka yawo-1970, ithathelwe indawo ngokuphelele izintambo zepulasitiki ze-PVC. Isimo emigqeni yemishini kagesi siyefana nesasemigqeni yokwakha, ekuqaleni eyayibuswa irabha yemvelo, kodwa yathathelwa indawo kakhulu izintambo ze-PVC ngawo-1970. Lesi simo kokubili asihambisani nesayensi futhi asinangqondo ngokomkhakha wamakhebula kanye nokukhetha kwabasebenzisi. Namuhla, izintambo ezihlukahlukene zemishini kagesi, ikakhulukazi izintambo zokuxhuma ezidingekayo ukuze izinto zikagesi zasendlini ezichumayo zishintshe, kufanele ziguqule isimo samanje sokubuswa ipulasitiki ye-PVC futhi esikhundleni sazo kufakwe izintambo zenjoloba. Ngenxa yokuthi izintambo zenjoloba zinezinzuzo eziyingqayizivele njengokuthambile, ukuzwa kahle kwesandla, ukungesabi ukushisa, nokungancibiliki, azinakuqhathaniswa nezintambo zepulasitiki. Ngenxa yezinzuzo zayo eziningi irabha yokwenziwa engenazo, i-CPE ingasetshenziswa kabanzi ekwenzeni izintambo zikagesi zasendlini nezinye izintambo eziguquguqukayo zemishini kagesi. I-CPE inezici zobuchwepheshe ezibanzi, njengokuncipha kwelangabi okuhle kakhulu nokumelana nowoyela okuphezulu, izakhiwo zomzimba nezomshini (okungukuthi izakhiwo zemishini), ukumelana nokuguga okuhle kokushisa, ukumelana ne-ozone, ukumelana nesimo sezulu, izici ezinhle zikagesi, nokusebenza kahle kokucubungula. Ingasetshenziswa emishinini ejwayelekile yokucubungula irabha, futhi impahla yenjoloba ayijwayele ukushiswa. Izinto zokusetshenziswa ze-CPE ngeke ziwohloke ngemva kweminyaka eminingana yokugcina, izinto zenjoloba ezinama-agent avuzayo zingagcinwa iminyaka engu-1-2 ngaphandle kokuwohloka ngaphansi kwezimo ezingcono zokugcina.
Kafushane, ukusetshenziswa kwe-CPE embonini yamakhebula eku-inthanethi, okungukuthi, esikhundleni se-CR nge-CPE, kuwumkhuba embonini yamakhebula eku-inthanethi. Lokhu akugcini nje ngokudambisa ukungqubuzana kwesidingo sokuhlinzekwa kwe-CR, kunciphisa kakhulu izindleko zemikhiqizo yekhebula, kuthuthukisa izinzuzo zezomnotho embonini yamakhebula, kodwa futhi kunokubaluleka okujulile ekuthuthukiseni izinga lemikhiqizo yekhebula kanye nokuzuza ukuhlukahluka kwezinhlobo zamakhebula.
Isikhathi sokuthumela: Nov-06-2023
