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Laborer electrocuted upon contacting an energized conveyor in Kentucky, May 31, 1991.

Morgantown, WV: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, FACE 91-22, 1992 Feb; :1-9
The case of a 59 year old male laborer who was electrocuted while painting a section of support steel for a conveyor system was investigated. The employer was a subcontractor installing structure and equipment inside an automotive parts assembly facility under construction. The victim was painting a section of support steel. Welders continued the fabrication of the facility. The victim was painting from a battery powered single man lift. The lift was plugged into a receptacle through an extension cord to charge the batteries. The 55 foot extension cord had the mechanical ground prong removed and had a poorly made splice. Two hours before the accident the victim told his supervisor that he had been receiving shocks from the conveyor. Several minutes prior to the accident the worker again stated he was receiving shocks from the equipment but again they were dismissed as insignificant. Moments later the painter was seen slumped in his chair on the lift. One of the welders (the victim's son) received a shock when he touched the victim. It was not possible to determine the source of the electrical energy to the conveyor, since equipment and materials were removed from the site before the investigation. It was recommended that thorough investigations be conducted immediately when a worker reports receiving mild electrical shocks; that effective electrical grounding be provided for all conductive assemblies and structures during the installation of conveyor systems; and that all electrically powered tools and equipment prior to and periodically during their use at the worksite be inspected.
NIOSH-Author; Region-4; FACE-91-22; Accident-analysis; Work-practices; Construction-industry; Electrical-hazards; Electrical-shock; Construction-Search
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Field Studies; Fatality Assessment and Control Evaluation
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National Institute for Occupational Safety and Health
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division