Notícias Normas ASHRAE em consulta pública

Normas ASHRAE em consulta pública

These drafts are scheduled for a 45-day public review from March 21, 2008 to May 5, 2008:

· BSR/ASHRAE Addendum c to ANSI/ASHRAE Standard 62.1-2007, Ventilation for Acceptable Indoor Air Quality (3rd Public Review Draft)

In response to public review comments, performance-based requirements have been added for each contaminant (PM10, PM2.5 and Ozone), so that designers in jurisdictions outside of the US could more readily determine when air cleaning is required. Also, references to EPA sources for designers within the US have been clarified and detailed, which would increase the likelihood that all designers in a given location use the same monitored data to make decisions related to outdoor air cleaning. In addition, the allowable outdoor ozone level has been reduced. As a result, systems in approximately three hundred and fifty counties in the US (all ozone non-attainment areas) would be required to use 40% ozone air cleaners; the current standard requires such air cleaners in fewer than twenty counties.

· BSR/ASHRAE Addendum d to ANSI/ASHRAE Standard 62.1-2007, Ventilation for Acceptable Indoor Air Quality (2nd Public Review Draft - ISC)

This Independent Substantive Review changes the proposed addendum in response to changes suggested by reviewers in comments submitted during the first public review. It includes changes to Table 6-1 and Table 6-4 as follows: Rates have been added for "occupiable storage rooms" that contain liquids and/or gels as well as for those that contain dry materials. Minimum outdoor airflow rates for both electric and hydraulic elevator rooms have been removed from Table 6-1, but minimum exhaust airflow rates for each have been added to Table 6-4.

For additional information or to download a copy of the public review drafts, please visit the ASHRAE website at http://www.ashrae.org/technology/page/331.


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