Forensic Engineers and Consultants

Tag Archive: machinery and equipment

  1. You’re Just Not My Type – Part 1: Guards

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    Selecting the best or most effective way to reduce or eliminate risk from a particular machine hazard is an extremely important process.  It can mean the difference between someone going home and hugging their wife and children…to never going home again.  The hazard control hierarchy (see figure below) is an available tool that illustrates what is known to be most effective to least effective when it comes to eliminating machine hazards or reducing the risk from those hazards to an acceptable level.  Removing the hazard by designing it out is by far most effective.  (more…)

  2. KEEP the CHANGE?

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    As we all know, change is a part of life.  Sometimes the results from change are good.  And we know sometimes change may result in things becoming worse, although it may not be immediately evident.  I think it is safe to say that when we intentionally make changes to something, our goal is to make it better with respect to one or more metrics.  Engineers working in manufacturing facilities are often asked to make changes to existing machines and processes for multiple reasons: (more…)

  3. The Alphabet Soup of Expert Certifications

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    When consulting as an expert witness, having certifications can assist in establishing your credibility and qualifications.  If you’ve perused the Curriculum Vitaes of the experts at The Warren Group, Inc., you may have seen some of these letters trailing after our names.  What do they mean and what organizations grant them?  The following is a sampling of some of the certifications our experts have acquired: (more…)

  4. 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…)

  5. Safety Hazards in Waterjet Cutting

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    Waterjet cutting machines (often simply called ‘waterjets’ in the industry) are essentially platforms that use ultra-high pressure water to manufacture cut parts with accuracy as high as .001 inch. They can cut materials ranging from glass and stone to steel and even plastics. Such machines can cost under $1.00 per minute to run, even including labor. Waterjets are some of the most versatile cutting tools available today. They produce virtually no heat-affected zone. They also use CNC (computer numerically controlled) programs, which allow continuously variable speeds for different edge conditions and cut quality. The waterjet dissipates heat, and the jet stream minimizes harmful chemical vaporization from cut materials. Small and mid-sized companies throughout the U.S. depend on these powerful tools to manage all sorts of custom two-dimensional cuts.

    But waterjets present unique hazards to the manufacturing environment. The following challenges require special attention: (more…)

  6. Machinery Directive VS Machinery Regulation – A Notable Change

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    In 2023, the new European Machinery Regulation was published which replaces the 2006 Machinery Directive.  The 2023 Machinery Regulation is slated to be entered into force and application on January 20, 2027.  A number of changes and/or clarifications are included in this new Machinery Regulation, not the least of which is the definition for “substantial modification.” (more…)

  7. WARREN Welcomes Mechanical Engineer Brian Tenace, M.S.M.E., P.E.

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    Brian’s Areas of Expertise Include:

    (more…)

  8. 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…)

  9. FORKLIFT Etiquette: DON’T BE A LOUSY TIPPER!

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    That is always good advice to follow if you are a forklift driver!  Operating a forklift can be a dangerous occupation.  There are approximately 1 million forklifts (powered industrial trucks) in the US workplace today, and it is estimated that just over 10% of those are involved in some type of accident every year.  Forklift accidents result in dozens of deaths and thousands of non-fatal injuries annually.  About one out of every four of those accidents involves a tipping or overturning forklift, making this the most common type of industrial truck accident.  (more…)

  10. The Importance of Crane Wire Rope Lubrication

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    Wire ropes are critical components of cranes and play a crucial role in ensuring the safety and efficiency of crane operations. To extend the life of these ropes and maintain their strength and performance, it is essential to regularly lubricate them. (more…)

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