Before any lifting operation begins, the condition of the equipment must be verified to ensure safety. Rigging chains and lifting chains with hooks are engineered for heavy-duty use, but like all mechanical devices, they can wear out over time. A proper inspection routine reduces the risk of accidents and extends the service life of the chain sling.

1. Why Chain Inspection Is Important

Rigging chains are exposed to shock loads, friction, corrosion, and bending stress during repetitive lifting. Without regular inspection:

The chain may weaken without visible warning

A cracked link can lead to sudden load failure

Misaligned or worn hooks can disengage under load

Safety regulations may be violated (EN 818 / ASME B30.9 require routine checks)

A simple pre-use inspection can prevent serious workplace incidents.

2. Step-by-Step Inspection Procedure

✅ Step 1: Visual Check of Chain Links

Look for:

Cracks

Deep wear or pitting

Twisted or stretched links

Flattened areas from side loading

If any damage is found, the chain must be removed from service immediately.

✅ Step 2: Measure Link Deformation

Elongation is a sign of overload.
If the chain has stretched more than 3% (EN standard) or 5% (ASME guideline), it should be replaced.

✅ Step 3: Inspect Hooks

For lifting chains with hooks, examine:

Safety latch function

Hook throat opening (no spreading)

Wear at the bearing point

Rotation and locking performance

A hook with excessive opening indicates overload and must be replaced.

✅ Step 4: Check Coupling Components

Inspect:

Master links

Connecting links

Shortening clutches

Swivels

Any missing retaining pins or deformation is unsafe.

✅ Step 5: Check Identification Tags

All rigging chains must have intact WLL & grade tags.
If the tag is missing → the chain is legally considered non-compliant.

3. Inspection Frequency

4. When to Remove a Chain from Service

Stop using immediately if:
❌ Cracks or deep corrosion
❌ Link elongation or twisting
❌ Hook latch is missing or damaged
❌ Identification tag missing
❌ Obvious deformation from overload

5. Best Practices for Extending Service Life

✔ Avoid dragging the chain on rough ground
✔ Do not shock-load the sling
✔ Store in a dry, ventilated area
✔ Use angle protection at sharp edges
✔ Choose proper grade (G80/G100) for heavy-duty lifting

Conclusion

Regular inspection is the most effective way to ensure the safe use of rigging chains and lifting chains with hooks. By detecting early wear and preventing overload failures, operators can maintain compliance with EN and ASME lifting standards while protecting workers and equipment.

TOPONE CHAIN provides not only reliable lifting products but also technical guidance for safe rigging operations in industrial environments.