Superseding ANSI/AMCA Standard 301-14, ANSI/AMCA Standard 301-22 applies to any fan for which a test standard for measuring sound-power levels exists. Stakeholders include fan manufacturers, building designers, engineers, and acoustic consultants.
Kevin Herreman, principal acoustic scientist at Owens Corning, discusses the problems posed by industrial noise and shares some research on models to more accurately predict insertion loss in the latest installment of the Blueprint.
A special concern from a life safety perspective is that plenums are home to combustible materials as well as various pipes, cables, and wires that may yield toxic fumes and smoke.