SPRINKLER MYTHS AND FACTS
There are some common misconceptions when it comes to fire sprinkler systems. Here are some myths people often believe, as well as the facts to hopefully clear up some of those myths.
FACT: Sprinkler heads are individually activated by fire. Residential fires
are usually controlled with one sprinkler head, and 90 percent of all
fires are controlled with six or fewer heads. A study conducted in
Australia and New Zealand covering 82 years of automatic sprinkler use
found that 82 percent of the fires that occurred were controlled by two
or fewer sprinklers.
FACT: Water damage from a sprinkler system will be much less severe than the
damage caused by water from firefighting hoselines or smoke and fire
damage if the fire goes unabated. Quick response sprinklers release 8
to 24 gallons of water per minute compared to 50 to 125 gallons per
minute released by a firehose. Sprinklers are highly reliable
devices that are activated by heat. They will only go off if there is a
fire which increases the heat beyond the sprinkler trigger point
(typically 135 to 165°F (57.2 to 73.9°C)). Preaction systems employ
additional safety features. Research has demonstrated that only 1 in 16 million heads ever activates by accident. Sprinkler systems can be connected to an alarm monitoring company or an
external alarm that will notify neighbors or passersby of a water flow.
This will facilitate the prompt notification of the fire department and
will minimize that amount of water damage.
MYTH: Sprinklers steal water from the fire department hoselines.
FACT: A properly designed sprinkler system (for commercial structures)
includes water supplies for the system and fire department hose streams.
FACT: Sprinklers provide a high level of life safety. Statistics demonstrate
that there has never been any multiple loss of life in a fully
sprinklered building. Property losses are 85 percent less in residences
with fire sprinklers compared to those without sprinklers. The
combination of automatic sprinklers and early warning systems in all
buildings and residences could reduce overall injuries, loss of life,
and property damage by at least 50 percent.
MYTH: The added cost of sprinklers will make housing unaffordable to first-time buyers.
FACT: A sprinkler system costs one to two percent of the total construction
costs. The cost of a sprinkler system is comparable to what many people
pay for carpet upgrades, a paving stone driveway, or a whirlpool bath.
FACT: Residential and commercial sprinkler heads come in a variety of
unobtrusive styles and models and in designer colors. Some can be
mounted flush with the ceiling line, and concealed behind protective
covers.
Source
U.S. Fire Administration. "Residential Sprinkler Myths and Facts." U.S.F.A. 15 April 2009. web. 7 May 2009.
<http://www.usfa.dhs.gov/citizens/all_citizens/home_fire_prev/sprinklers/facts.shtm>