Kugirango ushyireho gahunda yo kohereza no gukwirakwiza sisitemu, tunel hamwe numuyoboro nibindi bihe.
Imiyoboro ya PVC ikingiwe na SANS 1507-4 irakwiriye gukoreshwa aho imbaraga za mashini zo hanze zitareba.
Gushyingura mu buryo butaziguye imiterere yubutaka bwubusa kububiko bwimbere no hanze.
Intwaro ya SWA hamwe n'ikoti rihamye irwanya amazi bituma bikoreshwa mu nyubako no hanze cyangwa gushyingurwa mu butaka.