Research Article
PSO Based Optimization of Testing and Maintenance Cost in NPPs
Table 6
Constraints on test intervals (TI).
| Test interval | Valves | Pumps | Constraints | Permitted range |
| | V1, V2 | PA, PB, PC | = · = · · | 168 h ≤ ≤ 8670 h | | V3, V5 | 1 ≤ ≤ 10 | | V4, V7, V8 | 1 ≤ ≤ 10 |
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