It is important that, once a method is installed, it should be maintained in its specified form, and that workers should not be allowed to slip back into old methods or introduce new elements unless there is very good reason for doing so. Periodic reviews should be conducted to ensure that the work method is satisfactory.
Ni muhimu kwamba, mara moja njia ni imewekwa, ni lazima iimarishwe katika hali yake ya maalum, na kwamba wafanyakazi haipaswi kuruhusiwa na kuingizwa nyuma katika njia ya zamani au kuanzisha mambo mapya isipokuwa kama kuna sababu nzuri sana kwa kufanya hivyo. kitaalam upimaji lazima uliofanywa kuhakikisha kuwa aina ya kazi ni ya kuridhisha.