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Occupational Safety and Health Administration OSHA

Accident Report Detail

Accident: 170374797 - Employee'S Left Thumb Caught In Spot Welding Machine

Accident: 170374797 -- Report ID: 0950614 -- Event Date: 03/14/1994
InspectionOpen DateSICEstablishment Name
11969602905/13/19943711Nummi-New United Motor Manufacturing, Inc
Employee #1 reached into the work area of a semi-automated multiple point, spot welding machine to reposition a mis-set piece, and a clamp closed on her hand. The employee sustained multiple fractures to her left thumb. Her hand was caught under a parts clamp that moved unexpectedly after an emergency stop default was initiated by a photoelectric presence sensing device that was interrupted. The compressed air-powered actuating ram, which closes the clamp, remains pressurized when the emergency stop is activated. The clamp became stuck against the mis-set part at the start of the machine cycle causing a process default to stop the welder. The pneumatic ram stores pressure (energy) that enables movement even with the emergency stop default. The machine's ID # is FWS-0606.
Keywords: fracture, spot welding, stuck, compressed air, thumb, emergency stop, crushed, mech malfunction, machine--misc
Employee # Inspection Age Sex Degree Nature Occupation
1 119696029 Hospitalized injury Fracture Misc. metal,plastic,stone&glass-working mach. op's

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