Forensic Engineers and Consultants

Tag Archive: sensing devices

  1. Machine Guarding Resources

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    So, you find yourself with a machine hazard that you need to guard.  Where do your turn for guidance regarding guards?  Several resources are available for the person who is tasked with providing machine guarding.

    The United States government provides resources in the Code of Federal Regulations (CFR).  These can be found at www.ecfr.gov.  Title 29 of the CFR, section 1910 covers “General Industry” regulations.  1910 Subpart O, covers Machinery and Machine Guarding.  Definitions are covered in 1910.211 and it is wise to understand how terms are defined. For instance, in 1910.211(a)(1), Point of operations is defined by the regulation as “that point at which cutting, shaping, boring, or forming is accomplished on the stock.” (more…)

  2. Safety Distance in Machine Safeguarding

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    Hazard can be defined as a potential source of harm.  Machine safeguarding seeks to protect people from these potential sources of harm.  Often distance from a hazard will play a key role in providing a means of protection.

    One would often think of distance as it relates to the location of a barrier guard from a hazard.  ANSI B11.19, Performance Criteria for Safeguarding, defines safety distance as “the distance a safeguard is installed from a hazard such that individuals are not exposed to a hazard.”  An example from ANSI B11.19 of the recommended distance of a slotted opening in a barrier guard from a hazard is shown (more…)

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