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Mechanic Crushed Underneath Four-ton Wood Chipping Machine
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2013/08/27
[PDF-1.12 MB]
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Description:A 54-year-old male mechanic at a tree trimming and removal company died after being crushed underneath an 8,000-pound wood chipping machine at a maintenance yard. On the day of the incident, the decedent and another worker were attempting to change the brakes on the wood chipper. They were using a telescopic hydraulic jack to lift the chipper in order to remove the wheels. After one side of the wood chipper was lifted, a single jack stand (rated for three-tons, used in a pair) was placed under that side. The decedent went underneath the machine attempting to properly position the hydraulic jack on the axle to lift the other side. The jack slipped, the jack stand broke, and the wood chipper fell on top of the decedent, killing him. Contributing Factors: 1. Working under a load/ overhead hazard. 2. Proper load considerations. 3. Work practices NJ FACE investigators recommend that these safety guidelines be followed to prevent similar incidents: 1. The machine should be lifted one side at a time, and then cribbed and blocked to prevent movement. 2. Jack stands should be selected according to the appropriate loading capacity, and are used and rated in pairs. 3. An expander should be used on the floor jack saddle to avoid having the worker going underneath the machine. 4. A safety and health plan based on a job hazard analysis should be developed by the employer and followed where workers are assigned tasks.
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Pages in Document:1-10
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NIOSHTIC Number:nn:20045669
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NTIS Accession Number:PB2015-102776
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Citation:Morgantown, WV: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, FACE 12NJ024, 2013 Aug;:1-10;
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Federal Fiscal Year:2013
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Performing Organization:New Jersey Department of Health and Senior Services
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Peer Reviewed:False
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Start Date:2005/07/01
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End Date:2026/06/30
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