Noma yiluphi uhlobo lwedivayisi luzovela phakathi nale nkinga, inkinga ayimbi kakhulu, isihluthulelo yindlela efanele yokuxazulula inkinga. Ngezansi sethula kafushane izinkinga ezivamile kanye nezixazululo zezimpendulo eziningana.

1. Ngenxa yokuthi izinga lamanzi alilungile, izinga lokushisa lamanzi liphezulu noma liphansi, ukwehluleka kokukhipha amanzi, njll., kubalulekile ukusebenzisa izindlela zokwelapha ezifanele ngokwezinkinga ezahlukene.

2. Indandatho yokuvala iyaguga, iyavuza noma iyaphuka. Lokhu kudinga ukuhlolwa ngokucophelela ngaphambi kokusetshenziswa kanye nokufakwa kwendandatho yokuvala ngesikhathi esifanele. Uma kwenzeka ukuphuka, umqhubi kufanele aqhubeke ngokuzimisela noma ayishintshe ngaphansi kwesisekelo sokuqinisekisa izinga lokushisa eliphephile kanye nengcindezi.

3. Ukuphela kukagesi ngokuzumayo noma ukuphelelwa yigesi Uma ubhekene nalolu hlobo lwesimo, qaphela ngokucophelela isimo sokusebenza kwe-retort, ubhalise, bese uqedela ukubulala amagciwane lapho kubuyiswa ukunikezwa. Uma ukunikezwa kumiswe isikhathi eside, udinga ukukhipha imikhiqizo e-retort bese uyigcina, bese uqhubeka nokusebenza ngenkathi ulinde ukubuyiselwa ukunikezwa.