Examples of HEPA filter in a sentence
After January 10, 1989, if the use of a fabric filter creates a fire or explosion hazard, or the Director determines a fabric filter is not feasible, the Director may authorize as a substitute the use of wet collectors designed to operate with a unit contacting energy of at least 9.95 kilopascals (or 40 inches water gage pressure), or use a HEPA filter that is certified to be at least 99.97 percent efficient for 0.3 micron particles.
With the HEPA filter and fans within the wet bench, it can become a Class 100 working environment or better.
This testing would be comprised of smoke loading a HEPA filter until failure or a dP of 20 in.
The test is performed by using a HEPA filter rather than a paint arrestor.
The ventilator control system (Stack V-1) shall consist of a fan with a constant flow rate that draws air from the building through a HEPA filter which vents to the atmosphere through a stack.