Installations requiring monitoring; notification of a detected defect

An approved inspection body must notify the competent authority in the event of a dangerous or safety-relevant defect.



Dangerous defect

During the inspection of a system requiring monitoring, the ZÜS identifies a defect that endangers employees or other persons (dangerous defect in a system requiring monitoring).

Safety-relevant defect

During the inspection of an installation requiring monitoring, the ZÜS found a defect that could pose a more than minor risk to the safety and health of employees or other persons, which is not remedied within a period specified by the ZÜS (safety-relevant defect of an installation requiring monitoring).

After remedying the defect, the operator must commission the ZÜS to carry out a follow-up inspection within a period specified by the ZÜS. The ZÜS is not commissioned by the operator of the system to carry out the due inspection within the deadline.


The ZÜS informs the competent authority of the type, location and operator of the relevant system requiring monitoring and sends the inspection certificate. This can be done via an online procedure, by e-mail, fax or in writing.

The notification to the authority enables it to take appropriate administrative action to counteract risks to health and safety.


In the event of dangerous defects, the ZÜS must notify the competent authority immediately.

In the event of safety-relevant defects, the ZÜS must notify the competent authority within 14 days of the expiry of the deadline set by the ZÜS for an inspection if it has not been commissioned by the operator to carry out the inspection.

Required documents

  • ZÜS test certificate

Online procedures


  • none




Responsible for editing:Bayerisches Staatsministerium für Umwelt und Verbraucherschutz

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