Wire Roping: Assessing Safety and Avoiding Catastrophic Failures

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If not monitored closely, construction zones can be the site of catastrophic injuries and losses. According to OSHA, the “most common types of construction accidents resulting in death on site are classified as the ‘Fatal Four’”:

  1. Falls
  2. Being struck by an object
  3. Electrocution
  4. Getting caught in or between equipment and machines.

This article discusses #4: Getting Caught in or Between Equipment, as it relates to steel wire roping and cabling.

Crane Collapses: Case Study and Statistics

In 1998, a crane load line broke while lifting the south topside module of the Petronius platform, dropping the module into the Gulf of Mexico. The cost was estimated to be around 116 million US dollars. Since 1999, more than 60 people have been killed as a result of wire ropes breaking and more than 65 associated injuries.

What Can Cause a Wire Rope to Break?

When you hear the term wire rope, you may picture in your mind a metal and seemingly unbreakable rope. Even though wire ropes can and will stand up better than many other rope types, they are, unfortunately, not unbreakable. Some things that can cause a wire rope to break include:

  • Wear in areas that have contact with hoist sheaves and drums.
  • Corrosion which is caused by lack of lubrication and exposure to heat or moisture.
  • After too much repeated bending even under normal operating conditions the wire may become fatigued (Internal and External).
  • If you do not follow the manufacturers’ weight charts and overload the safe working limit.
  • Mechanical abuse because of crushing, cutting or dragging the rope.
  • Using the rope when it is frozen or too stiff.
  • Kinks caused by improper installation of a rope, sudden release of a load or knots that were made to shorten a rope can cause the rope to become compromised.
  • Crushing, which his caused by spooling onto multi-layer drums.

Many causes can be minimized by the use of a proper crane design and rope maintenance procedures, most of these causes though are unavoidable and are considered to be part of a normal rope life. The two main causes that are considered unavoidable are crushing and internal and external fatigue.

Trust Professionals to Provide Rigging Equipment That Won’t Fail

If you don’t have the right rigging elements in place, people could be put in dangerous situations. Focus on purchasing equipment and securing elements from trusted resources. Tway Lifting is one of the best options to consider. Tway Lifting can help their customers with rigging, rentals, and more.

Hire Tway Lifting to Inspect Your Rigging

For over 75 years we’ve provided quality rigging inspection services as a complimentary add-on to companies that have chosen us as their rigging and lifting partner. Every one of our technicians is highly qualified and performs inspections in alignment with OSHA standards. We provide this service free of charge to companies in Central Indiana and ask for a nominal trip fee outside of the area.

Contact us or visit our website: twaylifting.com/reasons-rigging-system-may-fail-inspection-matters/.

 

 

 

 

 

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