Mining Incidents
Muerte · Registro MSHA n.º 220122090029

Bulldozer Operator

26 de julio de 2012 a las 5:40 PM
Portable Crushing Plant #1 · Surface · Metal/Non-Metal
Polk Condado, MN
Clasificación TRANSPORTE MOTORIZADO
Tipo Caída desde una máquina
Narrativa del investigador
Full details are not yet known. Employee was lubricating a conveyor and the conveyor was started. Injuries are either from being thrown from the conveyor or being trapped in machinery.

Texto original en inglés de la MSHA

Investigación final de la MSHA
On July 26, 2012, Peter P. Faust, equipment operator, age 49, was killed when he was thrown off the discharge end of a 150-foot long stacker conveyor. Faust was standing on the belt, greasing the head pulley, when a coworker started the stacker conveyor by switching the disconnect to the "on" position. Faust fell off the stacker conveyor 51 feet to the ground below. The accident occurred because management previously directed the electrical panel for the conveyor to be modified, allowing the stacker conveyor's start/stop switches to be bypassed. The wiring was changed to bypass the start/stop switches on the stacker conveyor's electrical panel provided by the manufacturer. At the end of each day and in preparation for the next day, the disconnect switch on the electrical panel located on the side of the stacker was placed in the "on" position so a person could remotely control the stacker conveyor from inside a control van, located approximately 230 feet away. This condition contributed to the stacker conveyor starting by a means other than recommended by the manufacturer. Additionally, Faust was greasing the head pulley on the stacker conveyor and it was not deenergized, locked and tagged out, and blocked against motion. The audible warning device was not sounded, as required, to warn Faust who was working on the stacker conveyor that the conveyor was going to start.
Causas fundamentales
  1. Management directed the wiring to be modified to bypass the start and stop switches on the stacker conveyor's electrical panel that was provided by the manufacturer.

    Acción correctiva: The wiring was returned to a manufacturer approved design.

  2. Management did not ensure that safe operating procedures were followed while persons greased the head pulley of the stacking belt conveyor. The victim accessed the stacker conveyor without ensuring that it had been deenergized, locked and tagged out, and blocked against hazardous motion.

    Acción correctiva: Management established policies, procedures, and controls to ensure that belt conveyors were deenergized, locked and tagged out, and blocked against hazardous motion before persons work on them. Management also installed grease lines that could be reached from the ground. A man-lift has also been provided to provide safe access. All miners have been trained regarding these new procedures.

  3. Management did not ensure that safe operating procedures were followed prior to starting the stacker conveyor. The required audible warning device was not sounded at the location of the accident when the stacker conveyor was started.

    Acción correctiva: A standard operating procedure for sounding the horn before starting the equipment was implemented and all miners were trained accordingly.

Hallazgos del informe final de investigación de la MSHA, que sustituye la narrativa preliminar anterior.

Detalles del registro
Actividad al momento del incidente
Machine Maintenance
Subunidad / ubicación
STRIP, QUARY, OPEN PIT
Tipo de accidente
Caída desde una máquina
Fuente de la lesión
GROUND
Naturaleza de la lesión
MULTIPLE INJURIES
Parte del cuerpo afectada
MULTIPLE PARTS (MORE THAN ONE MAJOR)
Experiencia minera total
5 years
Experiencia en esta mina
0 years
Experiencia en este puesto
6 years
Grado de la lesión
FATALITY
Verificar en MSHA

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Fuente: Administración de Seguridad y Salud Minera de EE. UU. (MSHA) · Documento 220122090029 · ID de mina 2102843 Vista de capacitación →