Rigging failures don’t happen often — but when they do, the results can be catastrophic. Damaged loads, injured workers, OSHA citations, and costly downtime all trace back to the same root issue: preventable mistakes.

For companies across construction, marine, industrial, and manufacturing sectors, understanding why rigging fails is the first step toward building a safer, more efficient operation.

This guide breaks down the most common causes of rigging failures, how they happen, and the exact steps your team can take to prevent them.

1. Incorrect Sling Angles (The #1 Cause of Rigging Failure)

    When the sling angle decreases, the tension on each leg skyrockets. A 60° angle can increase tension by 15–20%, while a 30° angle can double the load on each sling.

Why this causes failure

  • Slings are overloaded without anyone realizing it
  • Hardware (shackles, hooks) experiences side‑loading
  • Load shifts become more likely

How to prevent it

  • Train crews to measure sling angles, not guess
  • Use an angle chart or digital load monitor
  • Choose slings with higher Working Load Limits (WLL) when angles are tight
  • Add spreader bars or lifting beams to widen the angle

2. Using Damaged or Worn‑Out Slings

Slings degrade over time — especially in humid, marine, or abrasive environments like Louisiana job sites.

Common damage types

Broken wires in wire rope

Cuts or abrasion in synthetic slings

Heat damage or chemical exposure

Corrosion on chain slings

Prevention

Perform inspections before every lift

Remove slings from service at the first sign of damage

Store slings properly to avoid UV, moisture, and chemical exposure

Keep a documented inspection program

3. Hardware Misuse: Shackles, Hooks, and Pins

    Rigging hardware is incredibly strong — but only when used correctly.

Common mistakes

  • Side‑loading shackles
  • Using the wrong pin type
  • Hook latches removed or bent
  • Mixing hardware from different manufacturers
  • Using hardware without readable WLL markings

Prevention

  • Always load shackles in a straight line
  • Use bolt‑type shackles for long‑term or overhead lifts
  • Never bypass or remove hook latches

Replace hardware with missing or unreadable markings

4. Environmental Factors: Heat, Humidity, Salt Air, and Chemicals

Louisiana’s climate is tough on rigging gear.

How the environment causes failures

  • Salt air accelerates corrosion
  • UV exposure weakens synthetic fibers
  • Heat reduces sling capacity
  • Chemicals degrade nylon and polyester

Prevention

  • Choose galvanized or stainless hardware for marine environments
  • Store slings indoors and off the ground
  • Use high‑heat slings for welding or foundry work
  • Rinse and dry gear exposed to saltwater

5. Shock Loading (The Silent Killer of Rigging Gear)

Shock loading happens when a load is suddenly dropped, jerked, or accelerated. Even a small shock load can exceed the WLL by 300% or more.

Causes

  • Sudden crane movements
  • Snagged loads
  • Dropping loads into tension
  • Wind swinging the load

Prevention

  • Lift slowly and smoothly
  • Keep communication clear between operator and riggers
  • Use taglines to control load movement
  • Never “snatch” a load to free it

6. Improper Load Control and Balance

Prevention

  • Identify the center of gravity before rigging
  • Use the correct hitch type (vertical, basket, choker)
  • Add additional slings for stability
  • Use spreader bars for long or uneven loads

7. Lack of Training and Communication

Most rigging failures trace back to human error — not equipment.

Prevention

  • Provide regular rigging training
  • Use standardized hand signals
  • Hold pre‑lift meetings for critical lifts
  • Ensure only qualified riggers perform rigging tasks

Related topic:Rigging Safety Training

How Trident Supply LLC Helps Prevent Rigging Failures

Trident Supply LLC provides the equipment, knowledge, and support crews need to stay safe and compliant:

  • High‑quality slings, shackles, hooks, and hardware
  • Marine‑grade rigging for Gulf Coast environments
  • Load monitoring and lifting solutions
  • Expert guidance on choosing the right gear
  • Fast delivery for New Orleans and Gulf South operations

Rigging Failures Are Preventable — With the Right Knowledge and Gear

Every failure has a cause. And every cause has a solution. By understanding sling angles, inspecting equipment, choosing the right hardware, and training crews properly, companies can eliminate the most common rigging hazards.

If you want, I can also create:

  • A thumbnail image for this blog
  • A short social media caption promoting it
  • A downloadable checklist for rigging failure prevention