ASHRAE Journal - March 2021 - 38
IEQ APPLICATIONS
Column
Protecting Building
Occupants From Smoke
During Wildfire and
Prescribed Burn Events
BY TOM JAVINS, P.E. LIFE MEMBER ASHRAE; GAIL ROBARGE; EMILY GIBB SNYDER, PH.D.; GREGORY NILSSON; STEVEN J. EMMERICH, FELLOW ASHRAE
ASHRAEGuideline 44P, Protecting Building Occupants from Smoke During Wildfire and Prescribed
Burn Events, will provide HVAC and building measures to minimize occupant exposures
and health impacts from smoke during wildfire and prescribed burn smoke events. This
column summarizes the planning framework for Guideline 44P, which is being shared
by the guideline committee to provide immediate information on this pressing issue
while the committee continues work on the complete guideline.
The planning framework includes information
for building managers on developing their Smoke
Readiness Plan, preparing for smoke events by having
supplies on hand and testing procedures in advance,
and knowing when and how to implement measures in
their plans. The document, " Planning Framework for
Protecting Commercial Building Occupants from Smoke
During Wildfire Events, " can be found at https://tinyurl.
com/yxyuqh72.
What is the Concern and Who is at Risk?
In 2020, in the U.S. alone, over 58,000 wildfires
*To find out more about local ambient air quality see AirNow.gov and
state websites.3,4 The U.S. Air Quality Index, shown on AirNow.gov,
has six categories indicating levels of heath concern as a function of
PM2.5 concentrations.5
38
ASHRAE JOURNAL
ashrae.org
MARCH 2021
occurred, burning more than 10 million acres
(4 million ha).1 Increasing numbers of wildfires and
large numbers of people living at wildland-urban interfaces makes protecting building occupants from smoke
critically important. Wildfire smoke is composed of fine
particulate matter (PM2.5, particles less than 2.5 m
in diameter) and gases. Although wildfire smoke contains multiple contaminants, this document focuses
on controlling exposure to PM2.5. Breathing high concentrations of these pollutants can cause respiratory
and cardiovascular health effects, especially for those
Tom Javins, P.E., is a mechanical engineer at the University of Montana in Missoula,
Mont. Gail Robarge is a physical scientist and Emily Gibb Snyder, Ph.D., is a chemist
at the U.S. Environmental Protection Agency, Office of Research and Development in
Washington, D.C. Gregory Nilsson is a technical officer at National Research Council
Canada in Ottawa, ON, Canada. Steven J. Emmerich is Indoor Air Quality and Ventilation
Group Leader at the National Institute of Standards and Technology in Gaithersburg, Md.
https://tinyurl.com/yxyuqh72
https://tinyurl.com/yxyuqh72
http://www.AirNow.gov
http://www.AirNow.gov
http://ashrae.org
ASHRAE Journal - March 2021
Table of Contents for the Digital Edition of ASHRAE Journal - March 2021
Contents
ASHRAE Journal - March 2021 - Intro
ASHRAE Journal - March 2021 - Cover1
ASHRAE Journal - March 2021 - Cover2
ASHRAE Journal - March 2021 - 1
ASHRAE Journal - March 2021 - Contents
ASHRAE Journal - March 2021 - 3
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ASHRAE Journal - March 2021 - Cover3
ASHRAE Journal - March 2021 - Cover4
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