Incazelo Yokwelashwa Kokushisa

Ukwelashwa kokushisa kwensimbi kuwumsebenzi osebenzisa ukushisisa, ukugcinwa kokushisa kanye nokupholisa kwensimbi esimweni esiqinile ukuze kuguqulwe isakhiwo sangaphakathi ukuze kutholwe izakhiwo ezidingekayo zomzimba, zamakhemikhali, zemishini kanye nezobuchwepheshe.