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ASHRAE Proposes Requirements on Separating ETS Areas
Mar 15, 2004
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An addendum to the American Society of Heating, Refrigerating and Air-Conditioning Engineers' (ASHRAE) ventilation standard that contains requirements for separating smoking and non-smoking spaces have now been opened for public review.

ANSI/ASHRAE Standard 62-2001, "Ventilation for Acceptable Indoor Air Quality," sets minimum ventilation rates and other requirements for commercial and institutional buildings.

Proposed addendum 62g was approved for a fifth public review at ASHRAE's 2004 Winter Meeting held in Anaheim, CA, U.S. on Jan. 24-28, 2004.

The comment period for addendum 62g began March 12, 2004 and will end April 26, 2004. It will be open as an independent substantive change, meaning only limited portions will be available for public comment during this timeframe.

The addendum proposes requirements to separate environmental tobacco smoke (ETS) areas from ETS-free areas through a combination of pressurization and airtightness as well as through limitations on air transfer and recirculation, says David Butler, chair of the Standard 62 committee.

The proposed addendum allows an exception to the requirements for solid partitions between smoking and non-smoking spaces.

The exception allows openings, such as doorways, between smoking and nonsmoking spaces as long as the system is designed so that air flows from the nonsmoking space to the smoking space. Interruptions to the airflow due to localized recirculations effects (eddies) or short duration events (wind gusts) are allowed.

A draft of the proposed addendum is available only during the public review period. An electronic draft version of addendum 62g is also during the comment period on ASHRAE's web site at www.ASHRAE.org.

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