Maintenance Man

The Cat 773E Rock Truck started having a problem with the right front strut. The mechanic was called and was conducting Trouble shooting procedures on the truck when the strut failed causing crushing injuries to the mechanic.

Texto original en inglés de la MSHA

1. The frame was not blocked or secured against motion prior to the three cylinder cover assembly bolts being loosened.

   Acción correctiva: Management has developed and implemented a written field risk analysis and procedures for blocking. All mechanics have received training for proper blocking methods.

2. The victim did not receive task training with regard to the hazards associated with the cylinder cover assembly. The cover assembly can be mistaken as a guard on the cylinder head. The lack of structural rigidity and the open design of the cover could give the impression that the cover assembly was a guard for the bolts securing the cylinder head. In addition, the following procedure from the service manual could have been misunderstood or caused confusion: “Check for leakage at the O-rings that are located under the protective plates that are on the head. These protective plates cover some of the head bolts in order to prevent removal of the head while there is pressure in the suspension cylinder.”

   Acción correctiva: All mechanics received task training on the hazards of the cover assembly.

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

Actividad al momento del incidente

Machine Maintenance

Subunidad / ubicación

STRIP, QUARY, OPEN PIT

Tipo de accidente

Atrapado en, bajo o entre un objeto en movimiento y uno fijo

Fuente de la lesión

HGHWY ORE CARIER,LRGE TRK

Naturaleza de la lesión

MULTIPLE INJURIES

Parte del cuerpo afectada

MULTIPLE PARTS (MORE THAN ONE MAJOR)

Experiencia minera total

6 years

Experiencia en esta mina

6 years

Experiencia en este puesto

6 years

Grado de la lesión

FATALITY