The project must be notified and described at least eight weeks before the planned start of construction.
The competent authority may object to the project within a period of eight weeks if the specified quality of the high-pressure gas pipeline or high-pressure gas pipeline system does not meet the legal requirements. The period begins as soon as the complete documentation and the expert opinion have been submitted to the competent authority. The deadline can be extended once by four weeks if this is absolutely necessary for the examination of the project.
Construction of the high-pressure gas pipeline may only commence after the deadline has expired or after receipt of notification that no objection has been raised. In the event of a timely complaint, work may not commence until the defect has been rectified. This does not apply to those parts of the gas holder systems that have not been objected to.
Copies of the preliminary certificates in accordance with Section 6 (1) of the High-Pressure Gas Pipeline Ordinance must be sent to the authority immediately, but no later than 14 days after commissioning of the high-pressure gas pipeline/installation. The date of commissioning must also be communicated.
Final certificates in accordance with Section 6 (2) of the High-Pressure Gas Pipeline Ordinance must be submitted to the authority no later than twelve months after commissioning of the high-pressure gas pipeline/installation.
The deadlines listed do not apply to high-pressure gas pipelines under 1000 metres in length.