System Tests of the Tunnel Ventilation – Common Practice in Austria

Activity: Talk or presentationTalk at conference or symposiumScience to science


Any emergency ventilation system in a tunnel primarily is aimed to prevent tunnel users from damage of smoke and flue gas. For this reason, it is essential that the engineered design and the subsequent implementation is tested prior the commissioning. In a first step tests have to be carried out to show the accurate function of each essential elements (fans, dampers, ductwork…) of a ventilation system. This will be ensured within the site acceptance tests (SAT).
But much more important are integrated tests of the overall system and the interaction between the fire detection system and the following control algorithm resp. regulation of the ventilation system. Within the commissioning phase and the test operation without traffic, testing procedures for the ventilation system have to be performed and documented to check the correct function. The following test procedure are obligate and standardized in Austria:
 Check of the control parameter (CO, TS, LG)
 Check of the control procedure in normal operation
 Check of the proper function of fire scenarios
 Check of the switching possibilities (on-site control, central control system)
 Check of the parametrization of the ventilation system
The paper describes the common praxis of ventilation system testing prior the commissioning, the problems and difficulties of integrated tests within the particular environment, for example in the case of complex tunnel systems.
Period21 Nov 2019
Held atITA Slovenija, Slovenia
Degree of RecognitionInternational


  • ventilation systems, ventilation control, smoke control, air velocity measurement, fire tests