ADSS cable hardware carries the entire mechanical load. A single failed clamp can drop a cable span. Preventive maintenance on hardware is the highest-return maintenance activity — and the most commonly neglected.
Hardware PM Checklist
| Component | Check | Frequency |
|---|---|---|
| Suspension clamps | Verify torque (compare to installation spec), check for jacket crushing | 3-5 years |
| Tension (dead-end) clamps | Check for cable slippage (measure grip position vs installation mark) | 3-5 years |
| Vibration dampers | Verify position (not shifted from installation location), check for corrosion | 3-5 years |
| Downlead clamps | Check all clamps present (none missing), verify spacing, check for corrosion | Annual |
Related Reading: Hardware selection · Cable slipping · 24-core clamp guide
Key Takeaways
- Clamp torque degrades over time. Re-verify every 3-5 years.
- Cable slippage through tension clamps is a leading cause of jacket damage — measure grip position vs installation mark.
- Missing downlead clamps concentrate vertical load on remaining clamps — replace immediately.
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