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Health hazard evaluation report: HETA-86-339-1741, EMCO High Voltage Company, Sutter Creek, California.
Cincinnati, OH: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, HETA 86-339-1741, 1986 Oct; :1-13
Possible exposure to several chemical substances during the fabrication of power supply modules was investigated at the EMCO High Voltage Company (SIC-3679), Sutter Creek, California, at the request of an employee. Lightheadedness and chest pain were reported by two workers when working in the potting room. Environmental air samples were collected during the coating and developing process and during the epoxy potting operation. Samples were analyzed for chlorobenzene (108907) and xylenes; no overexposures were registered. No overexposure was observed to butyl-glycidyl-ether (2426086) and no detectable levels of epichlorohydrin (106898), cyclohexanone (108941), 2-methoxyethanol (109864), or 2- ethoxyethanol (110805) were found. During the pot soldering operation there was a potential for exposure to the fluxing agent, 3 percent hydrochloric-acid (7647010), and the operator had complained of throat and nose irritation. Airborne exposures to sodium- persulfate (7775271) during the etching operation were not considered likely to occur. The author recommends that the fabrication operator wear protective gloves during coating and developing of copper boards. Gloves and goggles should be worn when weighing out the sodium-persulfate and when removing panels from the bench top etcher. Local exhaust ventilation with a movable duct should be used during the pot soldering operation.
NIOSH-Author; NIOSH-Health-Hazard-Evaluation; NIOSH-Technical-Assistance-Report; HETA-86-339-1741; Region-9; Hazards-Unconfirmed; Electronics-industry; Solvents; Epoxy-resins; Epoxy-compounds; Author Keywords: Electronic Components, Not Elsewhere Classified; manufacturing high voltage power supply modules; manufacturing printed circuit boards; epoxy potting; solder dipping operation
108-90-7; 2426-08-6; 106-89-8; 108-94-1; 109-86-4; 110-80-5; 7647-01-0; 7775-27-1
Field Studies; Hazard Evaluation and Technical Assistance
NTIS Accession No.
National Institute for Occupational Safety and Health
Page last reviewed: February 7, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division