Context
Combined-cycle thermal-plant cooling loops face tightening regulatory constraints on chlorination discharge to watercourses. Operators are transitioning to zero-discharge designs, in which filtration material must survive persistent chloride exposure at elevated temperature without becoming itself a compliance or consumable-cost problem.
Challenge
Commodity stainless filtration media were failing the chloride-cycling fatigue envelope well before the target service-life. Polymer alternatives degraded under thermal cycling. The operator required a filtration solution consistent with a plant-life-aligned maintenance schedule.
Material choice
GTX Precision Nickel Mesh (GTX-MESH-P) in a cooling-loop-tuned weave geometry, fabricated into drum-filter and candle-filter cartridge assemblies by GTX Custom Fabrication.
Validation
NP1 nickel’s chloride-resistance profile — inherited from the marine-mesh qualification baseline — was confirmed under the plant’s cooling-loop chemistry and thermal profile. Filtration-cycle pressure-drop performance held within design-specification limits across the qualification run.
Outcome
Cooling-loop filtration performance aligned with the plant’s zero-discharge design target. Maintenance interval extended materially against the commodity-mesh baseline. Pathway opened for similar retrofit across the operator’s broader thermal-plant portfolio.
| Operating temperature | Up to 200°C (wet) |
|---|---|
| Chloride resistance | Marine-mesh qualification baseline |
| Mesh count | Customised per loop geometry |
| Form factor | Drum-filter · candle-filter cartridge |
| Nuclear qualification | ASME cross-reference · roadmap |
Citations
- GTX metrology · marine-mesh chloride-cycling baseline report.
- NTU Singapore · chloride-cycling fatigue dossier.
- Aranca · Thermal Power Filtration Materials Market Report · 2026 – 2030.