An industrial hygiene study to determine worker exposure to epichlorohydrin (106898) is presented to document existing engineering controls, work practices, administrative controls, and biological and environmental sampling requirements and control procedures being used by the companies. Individual walk-through and complete industrial hygiene survey reports were prepared for each plant and submitted individually. Five plants were surveyed. Two plants were both manufacturers and users of epichlorohydrin, and three plants were users only. Detailed industrial hygiene surveys were made to conduct personal and area sampling in these plants over periods of three shifts. Air sampling data are included, as are summary tables of worker exposure levels to epichlorohydrin and associated solvents or process materials, evaluation of exposure level measurements, exposure control efforts, and recommendations. Chemical operators represent the job type that has the greatest exposure to epichlorohydrin in the manufacturing and resin manufacturing processes. Exposures ranging from nondetectable to 2.1ppm for epichlorohydrin and from nondetectable to 8.9ppm allyl- chloride (107051) for samples in two plants were reported. The five resin processing plants representing 39 samples showed exposure to chemical operators ranging from nondetectable to 0.83ppm for epichlorohydrin.
Tracor Jitco, Inc., Rockville, Maryland, NIOSH