by Corey Mui | Mar 8, 2021 | Noise Control
When reviewing fan performance information from a fan selection program, critical fan sound data measured in sound pressure levels (dBA) is often overlooked. And a program input value that can significantly change the resulting dBA levels is the reflectivity or “Q”...
by Zachary Fausnaught | Jun 18, 2019 | Noise Control
“Fans and Dust Collectors in a Small Utility Room.” Sound is OK; noise is not! Meeting OSHA’s permissible exposure limit (PEL) at 90 dBA for 8 hours and addressing the hearing protection requirement at 85 dBA is important because noise attenuation is part of a...
by Bob Shipe | Aug 22, 2014 | Noise Control
“This gives us the noise relief we needed and flexibility as we grow.” A large furniture manufacturer in upstate New York installed a state-of-the-art, computer controlled planer/saw/jointer machine. As their production increased, so did the plant noise, with...
by Zachary Fausnaught | Dec 18, 2013 | Fans/Blowers, Noise Control
Ambient plant noise levels are under the scrutiny of OSHA as well as plant Health and Safety departments. Knowing that normal speech is almost impossible at 85-95 dBA and OSHA permissible worker exposure is 90 dBA over an 8 hour period (see Table 1) we need to select...
