When each heat-exchanger part is due.
Plate-heat-exchanger service follows the pressure drop and the cooling performance, not a fixed hour. This is the usual order of what wears, what we inspect and the typical action.
| Component | Typical check | What we inspect | Typical action |
|---|---|---|---|
| Plate pack | Rising ΔP / dropping duty | Fouling, scaling | Open, CIP clean, regasket |
| Plate gaskets | Every opening | Cracking, hardening, set | Renew — never reuse |
| Individual plates | At overhaul | Cracks, corrosion, thinning | Dye-test; renew cracked plates |
| Frame & tie bolts | Routine | Corrosion, tightening dimension | Re-tension; renew bolts |
| Nozzle liners | At overhaul | Erosion, corrosion | Renew liners |
| Movable-plate rollers | At overhaul | Wear, seizure | Renew rollers & bearings |
| Complete unit | Major overhaul | Full strip, pressure test | Regasket, pressure-test, recertify |











































