Forensic Engineers and Consultants

Tag Archive: machine safety guards

  1. Machine Guarding and Risk Assessment

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    The Occupational Health and Safety Administration (OSHA) “Top 10 for 2018” violations once again have Machine Safeguarding earning a position on the list. Machine safeguarding was the 9th most cited standard as noted in the list below:

    1. Fall protection, construction (29 CFR 1926.501)
    2. Hazard communication standard, general industry (29 CFR 1910.1200)
    3. Scaffolding, general requirements, construction (29 CFR 1926.451)
    4. Respiratory protection, general industry (29 CFR 1910.134)
    5. Control of hazardous energy (lockout/tagout), general industry (29 CFR 1910.147)
    6. Ladders, construction (29 CFR 1926.1053)]
    7. Powered industrial trucks, general industry (29 CFR 1910.178)
    8. Fall Protection–Training Requirements (29 CFR 1926.503
    9. Machinery and Machine Guarding, general requirements (29 CFR 1910.212)
    10. Eye and Face Protection (29 CFR 1926.102)

    (Source: www.osha.gov/Top_Ten_Standards.html)

    (more…)

  2. Unguarded Shear Point on Force Tester Amputates Worker’s Finger

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    A worker was injured while testing gas springs similar to the type that hold the hatchback of an SUV open. The hazard that injured the worker was an unguarded shear point. The tester contained a mounting plate that was raised and lowered by a pneumatic cylinder.

    The pneumatic cylinder lowered the mounting plate while the worker’s fingers were in the hazardous, unguarded shear point. (more…)

  3. Case Study of an Injury Involving a Soil Mixer

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    In May, 2014, a plant farm worker was seriously injured when he fell into the hopper of an electrically powered soil mixer.  The mixer in question used a rotating steel ribbon powered by a 7-1/2 hp electric motor to mix batches of materials such as sand, mulch, wood shavings, fertilizers and other landscaping materials to create potting soil. At the top of the hopper sidewalls, within 6 inches of the ribbon, was a steel grate. (more…)

  4. A Case Study in a Coal Mine: What are a Machine Rebuilder’s Responsibilities?

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    In November of 2010, a miner was injured by a roof bolting machine (roof bolter) in an Alabama underground coal mine. The roof bolter in question had undergone a complete rebuild intended to return the machine to the original equipment manufacturer’s (OEM’s) specifications. Warren was hired to analyze both the design of the roof bolter and the actions of the rebuilder to determine if either contributed to the unfortunate coal miner’s serious injury. Background information on coal mining and roof bolters, as well as an analysis of the roof bolter and the actions of the rebuilder are included. (more…)

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