2.Kev xaiv cov khoom siv yeeb nkab yuav tsum ua raws li cov hauv qab no:
1) Cov kav dej ntshiab thiab cov kav dej siab huv yuav tsum ua los ntawm cov kav dej tawv polyvinyl chloride, cov kav dej polypropylene lossis cov kav hlau tsis huv;
2) Galvanized steel kav yuav tsum tau siv los ua kom txias cov dej ntws thiab xa cov kav dej;
3) Cov hoses zoo yuav tsum tau siv rau kev sib txuas ntawm cov khoom siv dej thiab cov kav dej;
4) Cov ntaub ntawv sib xws yuav tsum tau siv rau cov yeeb nkab fittings.
3.Cov khoom siv dej npau npau tuaj yeem ntsia tau rau hauv qhov chaw ua haujlwm huv;lub dab ntxuav hauv chav dej yuav tsum muab dej kub;cov dej muag muag thiab cov kav dej ntshiab yuav tsum tau hloov mus rau qhov chaw nres nkoj tu, thiab cov khoom siv dej ntshiab huv yuav tsum muab tso rau ze ntawm qhov dej.
4.Sprinkler cov chaw yuav tsum tau nruab ib ncig ntawm lub rhiav huv.