Hygienic Evaluation for Final Acceptance of Central Air Conditioning Ventilation System in New Airport Terminal

Objectives To identify and analyze the health risk factors which might present in the central air conditioning ventilation system (CACVS) of a new airport terminal to reduce the potential risk of airborne disease outbreak.

Methods To investigate, analyze and evaluate the acceptance of the system through checking the design, field investigation, field sampling and detection, risk assessment etc.

Results The total bacteria counts and the total fungi counts on the inner surface of air tubes exceeded the national standard in 3 samples and 9 samples, respectively. The total bacteria counts and the fungi counts in air supply system exceeded the national standard limits in 2 samples and in 9 samples, respectively.The other indexes were qualified.

Conclusions This CACVS was not qualified for the requirement in Hygienic Specification of Central Air Conditioning Ventilation System in Public Buildings (WS 394-2012).Therefore, this CACVS could be used only after being cleaned and disinfected.