Owner of the electrical installation, or his representative, is responsible for the electrical installations, which shall constantly conform safety requirements and technical rules.

Furthermore, the owner has to check the safety of the electrical installations following the established and, subsequently, during defined control periods. With the following safety certificate (SiNa) the risk-free condition of the facility is confirmed.

Proof of safety, as well as the technical documentation of the electric installations: (plans, schemes, operating instructions) and the foundation for the evidence of security, must be retained throughout their entire lifetime. (the foundation for Sina at least during one control period)