Industrial Racking Failures & Why They Happen
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Racks are everywhere in our industrial establishments and some have failed with catastrophic results.
Why is this happening?
In my experience inspecting racking systems and investigating rack collapse, I find the reasons to be one of the following:
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Overloading.
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As a result of a sustained impact with mechanical equipment or stored items.
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A lack of regular inspection, maintenance and repair of damaged components.
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Poor design and fabrication.
Pre-engineered racks are structures designed for ideal conditions and not the real environment encountered in a plant. Moving equipment in a plant are beasts of burden that are able to, with a tender nudge, cause catastrophic damage to a loaded rack structure. While pre-engineered racking manufacturer’s set criteria for the assembly, loading and repair of racks in printed specification sheets. In reality: • Racking components are sold as a commodity item, frames, stringers& decking. • Second hand racks are occasionally purchased and installed in plants.
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Racks are moved around the plant without a review of the manufacturer’s requirements regarding anchoring of bases or the provision of protection shields for the bases etc. and without the involvement of structural engineers.
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Damage is not reported and attended to immediately. • Engineering documentation, load rating information and manufacturers instruction for the assembly, maintenance and use disappear.
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Signage indicating the load rating of shelves is not posted.
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An engineered repair procedure is not available.
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Racks are custom built in a plant or engineered racks are altered without engineering input.
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Training of equipment operators is deficient.
Owners, employers and health & safety committees need to review the existing racks in the plants and ensure the following:
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Engineering documentation is available indicating that the rack was designed and installed in accordance with current applicable standards and manufacturer’s specifications.
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The racks are continuously inspected for signs of damage or distress.
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Damage is immediately reported and attended to.
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An engineered repair procedure is available and implemented.
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Equipment operator training includes working around racking systems.
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Custom racks are designed by professional engineers.
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Modification of a rack is made by a professional engineer.
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Load rating signage is posted in conspicuous locations on the racks and workers trained not to overload the racks. If you’re seeking more information on pre-start health and safety reviews in Ontario, we encourage you to delve into our services. Explore how our expertise can assist you in meeting regulatory standards and creating a secure work environment.
— Ralph Balbaa M.Eng., P.Eng., is a health and safety expert with more than 40 years of engineering experience and a former Ministry of Labour consultant. He is the President of HITE Engineering, a Mississauga-based consulting firm specializing in industrial and construction safety.