A
major new study released today by the National Institute of Standards and
Technology (NIST), concludes that firefighting crews of five or six
members—instead of three or four—are significantly faster in putting out fires
and completing search-and-rescue operations when responding to fires in
high-rise buildings.
"Unlike
most house fires, high-rise fires are high-hazard situations that pose unique
operational challenges to fire service response. How big a fire gets and how
much danger it poses to occupants and firefighters are largely determined by
crew size and how personnel are deployed at the scene," says lead
researcher Jason Averill, a NIST fire-protection engineer. "It's not
simply that larger crews have more people. Larger crews are deployed
differently and, as a result, are able to perform required tasks more quickly."
The Report
on High Rise Fireground Filed Experiments explores the outcome of the
experiments funded by the FEMA Assistance to Firefighters Grants Program and
conducted in a 13-story vacant high-rise office building in Crystal City, Va.,
with the support of local-area fire departments. The study involved 48 separate
controlled experiments, plus 48 corresponding computer-modeling simulations,
which evaluated three types of representative fires, from slow- to fast-growing.
The report
is the latest in a series
of firefighter safety and deployment studies conducted by NIST, the
International Association of Fire Fighters, and four other organizations,
including the IAFC.
In an
analysis of 14 critical tasks, the high rise study found that three-member
crews took almost 12 minutes longer than crews of four, 21 minutes longer than
crews of five and 23 minutes longer than crews of six to complete all tasks.
Four-person crews took 9 minutes and 11 minutes longer than five- and
six-member crews did, respectively.
On the
basis of the results of computer modeling, which incorporated data from live
experimental burns, the study team concluded that smaller crews end up facing
larger fires because of the additional time required to complete tasks.
The study
also explores such variables as the effect of using fire service access
elevators to move firefighters and equipment up to the staging floor and the
differences in sounding a higher initial alarm with smaller crews vs. low-alarm
response with larger crews.
While much
less frequent than house fires, about 43 high-rise fires occur in the United
States every day, according to the NFPA.
"Rather
than providing a one-size-fits-all answer, our study provides a scientific
basis for discussions in communities as they consider matching resources
deployed to their particular risk levels." says Averill.
Download
the
Report
on High Rise Fireground Filed Experiments. Also, for more information, view a recent
Fire Protection Research Foundation report on total evactuation systems for tall buildings or a an NFPA report on
high-rise building fires.
Work in Progress: America Burning at 40 - We need data!!
The country also needed a better understanding of fire behavior and fire department productivity. This led to NIST’s Center for Fire Research and fire.gov – “Better firefighting through research.”
We still have data needs. Currently, NFPA is entering the public comment phase for the second draft of the proposed NFPA 950: Standard for Data Development and Exchange for the Fire Service and seeking input or proposals for the proposed NFPA 951: Guide to Building and Utilizing Digital Information.
What kinds of data or information do you use or need about fire? Where or how do you get it? What are the obstacles? How could we get better data?
Listen to John Hall, Division Director of NFPA‘s Fire Analysis and Research Division, discuss data issues. Dr. Hall was involved in the early years of NFIRS at the USFA and is still using it today. After you listen, please share your thoughts.Reblog (0) | | |
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