In-Depth Survey Report: Evaluation of Engineering Controls for the Mixing of Flavoring Chemicals

摘要

Researchers from the National Institute for Occupational Safety and Health (NIOSH) conducted an evaluation of a local exhaust ventilation system installed in the liquid compounding room at Gold Coast Ingredients, Inc. The ventilation control system was developed and installed by Gold Coast in conjunction with a contractor to reduce the potential for employee exposure to harmful flavoring chemicals. The ventilation system for the compounding room was developed following an initial visit by NIOSH in November 2006. Following that survey, recommendations on the design and implementation of engineering controls were provided to the company in a letter dated February 7, 2007. This survey was conducted to evaluate the installation of new ventilation controls for the weighing and pouring of chemicals on the bench top and the mixing of large scale batches of flavorings in mixing tanks. Evaluations were based on a variety of tests including tracer gas experiments, air velocity measurements, and smoke release observations.