Vienna General Hospital

In the neurosurgery area, the station on level 8 was completely rebuilt and the ventilation unit on level 13 replaced. The ventilation ducts in between were already several decades old and just met the requirements for tightness class „A“. Since the current regulations in the hospital sector require tightness class „C“, and replacing the shafts was not conceivable due to lack of space, the sealing was carried out using the Aeroseal system. The lines were cleaned by HBL Haidinger before sealing.

PROJECT

Building: Vienna General Hospital
City: Vienna, Austria
Date: August 2019
AEROSEAL Partner: Aeroseal Austria
Executing company: -
Target: Compliance with tightness class C.
Preseal leakage: 66 l/s @ 500 Pa
Postseal leakage: 5,1 l/s @ 500 Pa
Reduction of leakage: 92,20 %

PROJECT COURSE

In the forefront, the renovation of the ventilation ducts with the Aeroseal sealing system was discussed in detail with the hygiene team of the hospital and Vamed or Ortner. The individual approvals for the hospital area under the title ÖNorm H6020 - VDI 6022 - GMP were also discussed and finally approved for use. As the existing pipes were already several decades old, HBL Haidinger carried out an air duct cleaning before sealing. The inspection openings required for the cleaning were coordinated together so that they could also be used for the sealing. The Ortner company installed metal sheets on both sides of the existing lines (1x in level 8 and 1x in level 13). The waterproofing unit was installed in the area of the ventilation centre and connected to the ventilation ducts which were closed on all sides. After the waterproofing had been completed, the tightness class „C“ could be maintained for both lines. In order to demonstrate the possibilities or application limits of the Aeroseal system, the supply air line was even sealed to tightness class „D“... this is practically impossible with conventional installation.

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