Specialty Gas Products
Parking Garages
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Macurco is a trademark of Aerionics, Inc.
Parking Garage Guide

Building owners and facility managers want to provide safe and effective parking garages while minimizing the energy
costs associated with heating, ventilation and air conditioning.  This application guide helps engineers, installers and
integrators provide suitable gas detection systems for enclosed parking garages.
Ventilation, Warning and Alarm

In parking garages vehicle traffic is part of everyday operations.  Consequently exhaust gases containing carbon
monoxide and nitrogen dioxide will be released into the air under normal conditions.  A gas detection system in a
parking garage should not go directly into alarm upon detection of carbon monoxide.  This would be considered a
nuisance.  Instead when low levels of carbon monoxide or nitrogen dioxide are detected, then ventilation system
should be engaged at the Rising Trip Point to draw in fresh air and reduce those gas concentrations to acceptable
levels.  If the ventilation system is incapable of reducing the gas concentration and it continues to rise, the Warning
signal may be activated indicating that there is an issue with the amount of exhaust accumulating in the space - even
higher, and the Alarm signal may be activated and may be associated with buzzers, horns or strobes and activation of
the fire or security system.  Read more by clicking on the Macurco Parking Garage Guide image above.
Carbon monoxide (CO) is an odorless, colorless gas
produced by cars and trucks and small gasoline
engines.  CO from these sources can build up in
enclosed or semi-enclosed spaces and people in
these spaces can be poisoned by breathing it.  The
most common symptoms of CO poisoning are
headache, dizziness, weakness, nausea, vomiting,
chest pain, and confusion.  High levels of CO
inhalation can cause loss of consciousness and
death.  www.cdc.gov

Nitrogen dioxide (NO2) is a reddish-brown gas with a
pungent, acrid odor and is one of a group of highly
reactive gasses known as "oxides of nitrogen," or
"nitrogen oxides (NOx)."  NO2 forms quickly from car,
truck and bus emissions.  Health effects associated
with nitrogen dioxide exposure (NO2) include eye,
nose, and throat irritation.  It may cause impaired lung
function and increased respiratory infections in young
children.  Extremely high-dose exposure to NO2 may
result in pulmonary edema and diffuse lung injury.  

Gasoline is used as a fuel for engines in cars. It is
colorless to pale brown or pink in color with a
distinctive odor.  Generally, the odor of gasoline  
provides adequate warning of hazardous
concentrations.  Gasoline is a volatile, flammable
liquid.  Its vapors may travel to a source of ignition and
flash back.  Gasoline vapors are heavier than air and
may collect in low-lying areas.  Typically, gasoline
contains more than 150 chemicals, including small
amounts of benzene, toluene, xylene, and sometimes
lead.  www.atsdr.cdc.gov

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