If PPE incorporates adjustment systems, the latter must be designed and manufactured so that, after adjustment, they do not become undone unintentionally in the foreseeable conditions of use.
I gcás ina n-ionchorpraítear córais coigeartaithe i TCP, ní mór na córais sin a dhearadh agus a mhonarú sa chaoi nach scriosfar de neamhthoil iad, tar éis an choigeartaithe, faoi dhálaí úsáide intuartha.