Nlezianya maka iji nko eme ihe nke ọma

1. Nkenko should be manufactured by a formal professional factory in accordance with the technical conditions and safety specifications of the nko, and the product should have the quality certificate of the manufacturer, otherwise it is not allowed to be used.
2. The new nko should be subjected to a load test, and the opening of the measuring nko should not exceed 0.25% of the original opening.
3.During use, check whether the nko is cracked or severely deformed, corroded and worn.
4. Nkenkokwesịrị ịnwale otu ugboro n'afọ. N'oge nnwale ahụ, mee nnwale static nke ugboro 1.25 maka ibu ọrụ maka nkeji iri, wee jiri enyo na -ebuli elu ma ọ bụ ụzọ ndị ọzọ chọpụta. E kwesịghị inwe mgbawa, mgbawa na nrụrụ fọdụrụnụ.
5. Ekwesịrị iji mmanụ ọkụ sachaa akụkụ atọ ahụ dị ize ndụ. Jiri iko na -eme ka ọ dị ukwuu ịhụ ma enwere mgbawa. Maka eferenkos, lelee ohia na atụdo maka eyi.
6. Defects on the nko shall not be repaired.