Sisitemu yoroshye yo kwihutisha umurongo w’itumanaho ku bigo ishobora gutanga inyungu nyinshi, kandi ikagira uruhare rugaragara muri ibi bikurikira:
(1) Kunoza umutekano w'ibikorwa byo gukora;
(2) Kunoza imikorere myiza y'umusaruro;
(3) Kunoza ireme ry'ibicuruzwa;
(4) Kugabanya ikoreshwa ry'ibikoresho fatizo n'ingufu mu musaruro.