Work Place -Indoor Air Quality Consultation

By: Envirodetox  27-Apr-2013
Keywords: Hvac Systems, Building Biology, Mould and Bacteria

The following indoor air quality testing services are offered by Envirodetox for any commercial or public premises in Perth, Western Australia including offices, hotels, restaurants and retail outlets; Assessment of general indoor air quality parameters including relative humidity, temperature and carbon dioxide and an understanding of ventilation flow rates due to natural and mechanical ventilation (HVAC systems). Specific Volatile Organic Compounds (VOC’s) can be tested for comparison to TWA and TEL guidelines obtained from national exposure standards. These results are obtained by active sampling that can then be analysed in the lab. This is intensive sampling that normally requires a minimum of 8 hours per sample in the test area. Total VOC concentrations are measured instantaneously by using a Photo Ionisation Detector (PID). This is a direct sampling technique that enables many multiple readings to gauge if there is a potential problem pertaining to VOC’s. Combustion gas analysis can be provided to ensure levels associated with natural gas combustion and vehicle exhaust are not surpassing dangerous concentrations. Ultrafine Particulates are measured directly by using the P-TRAK Ultrafine Particle Counter. Ultrafine particulates have an aerodynamic diameter of less than 0.1 microns (100nm) and can penetrate deeply into the lungs. Mould and bacteria is detected using bioaerosol sampling. The sample is then analysed in a certified laboratory for mould spore and bacteria levels and specific cultures present. Moisture sources for mould are also measured using a protimeter in all relevant building substrates. Potential sources of dust mites, pollens, heavy metals and chemicals are also identified through observation. These parameters can all affect the indoor comfort levels and contribute to adverse health effects. An important aspect of indoor air quality is what air is being introduced from the external environment. The two main areas of external introduction of pollutants are through the external air conditioning intake valve(s) and building openings such as windows and doors. This is especially relevant if these external points for the building are located close to high traffic roads, exhaust fans, train lines and any other pollution source. In assessing the potential exposure to building occupants it is important to compare the concentrations obtained against officially recognised standards (where applicable) and building biology standards. The majority of parameters for indoor air quality are not officially standardised for interiors, but there are several guidelines that are used including the American Society for Heating, Refrigeration and Air-conditioning Engineers ASHRAE 55-2004 and National Occupational Health & safety Commission (NOHSC).

Keywords: Building Biology, Hvac Systems, Indoor Air Quality Testing Services, Mould and Bacteria, Pert, Wetsren Australia Indoor Air Quality, Relative Humidity, Temperature and Carbon Dioxide and an Understanding of Ventilation Flow Rates, Ultrafine Particulates are Measured, Volatile Organic Compounds (Voc’s) Can Be Tested for Comparison to Twa and Tel,

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