Detailed Answer
End-of-life determination: 1. Repair cost exceeds 50% of a new unit; 2. Key components discontinued (parts unavailable); 3. Safety performance non-compliant (slow emergency stop response/signal drift); 4. Protection failure (seal rings beyond replacement); 5. Technology obsolescence (frequency band/standards outdated). LDER's 2-year trade-in enables a smooth transition; equipment past its lifespan should be replaced. Lifecycle management should be in the equipment register.
| Cost | Repair >50% → replace |
| Safety | Performance non-compliant |
| Replace | Trade-in |
Note:Mark lifecycle status in the equipment register — plan upgrades in advance.