Standard Practice for Measuring Chemical Emissions from Spray Polyurethane Foam (SPF) Insulation Samples in a Large-scale Ventilated Enclosure

Importancia y uso:

5.1 The demand for SPF insulation in homes and commercial buildings has increased as emphasis on energy efficiency increases. In an effort to protect the health and safety of both trade workers and building occupants due to the application of SPF, it is essential that reentry/reoccupancy-times into the structure where SPF has been applied, be established.

5.2 Concentrations of chemical emissions determined in large-scale ventilated enclosure studies conducted by this practice may be used to generate source emission terms for IAQ models.

5.3 The emission factors determined using this practice may be used to evaluate comparability and scalability of emission factors determined in other environments.

5.4 This practice was designed to determine emission factors for chemicals emitted by SPF insulation in a controlled room environment.

5.5 New or existing formulations may be sprayed, and emissions may be evaluated by this practice. The user of this practice is responsible for ensuring analytical methods are appropriate for novel compounds present in new formulations (see Appendix X1 for target compounds and generic formulations).

5.6 This practice may be useful for testing variations in emissions from non-ideal applications. Examples of non-ideal applications include those that are off-ratio, applied outside of recommended range of temperature and relative humidity, or applied outside of manufacturer recommendations for thickness.

5.7 The determined emission factors are not directly applicable to all potential real-world applications of SPF. While this data can be used for VOCs to estimate indoor environmental concentrations beyond three days, the uncertainty in the predicted concentrations increases with increasing time. Estimating longer term chemical concentrations (beyond three days) for SVOCs is not recommended unless additional data (beyond this practice) is used, see (1).4

5.8 During the application of SPF, chemicals deposited on the non-applied surfaces (for example, floors and ceilings) are the result of both gaseous phase emissions from the SPF and overspray. It is difficult to separate these two processes with current analytical methods. At present, the difference in how these two processes impact the long-term emissions is not known. This practice combines these two processes to generate data for modeling inputs.

Subcomité:

D22.05

Volúmen:

11.07

Número ICS:

13.040.01 (Air quality in general), 91.100.60 (Thermal and sound insulating materials)

Palabras clave:

closed cell SPF; emissions; environmental concentration; full-scale ventilated enclosure; high-pressure application; indoor air quality; low-pressure application; open cell SPF; reentry times; reoccupancy times; spray polyurethane foam;