Standards Development
A positive pressure ventilator (PPV) is defined as a portable fan that can be positioned relative to an opening of an enclosure and cause it to be positively pressurized by discharge air velocity. They are principally used by firefighters to mitigate the effect of smoke.
This standard may be used as the basis for the test of a PPV when air is used as the test gas. Each test shall be limited to one PPV per test. A PPV tested in accordance with this standard shall be freestanding and without a ductwork connection to the test chamber, thereby allowing for the measurement of entrained airflow.
Any item of equipment designed or intended for applications other than positive pressure ventilation is not within the scope of this standard.
The parties to a test for guarantee purposes may agree in writing on exceptions to this standard prior to the test. However, only a test that does not violate the mandatory requirements of this standard shall be designated as a test conducted in accordance with this standard.
This standard establishes a uniform method of laboratory testing for the determination of the aerodynamic performance of a positive pressure ventilator (PPV) in terms of airflow rate, pressure, air density and rotational speed, for performance rating or guarantee purposes.
It is not the purpose of this standard to specify a testing procedure for the design, production or field test of any PPV, nor is it the purpose for the standard to serve as a manual for the construction, validation or calibration of the test facility.
Positive Pressure Ventilators are used extensively by firefighters in both the US and Europe and around the world. This standard was initially completed and approved by AMCA in 1995 and became an American National Standard in 1996 and has been in use since then.
Fast tracking this standard through ISO will lend additional credibility to the standard for the users and the public they serve.
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