Sample interview questions: How do you approach system water treatment and corrosion prevention in hydronic applications?
Sample answer:
System Water Treatment
- Monitor water quality: Perform regular water testing to measure pH, hardness, alkalinity, and dissolved oxygen levels.
- Utilize chemical treatment: Add corrosion inhibitors, biocides, and pH buffers to prevent corrosion, bacterial growth, and scale formation.
- Filter and demineralize: Employ water filters and demineralization equipment to remove impurities, reduce hardness, and maintain optimal water quality.
- Vacuum degasification: Remove dissolved air from the system using vacuum degasifiers to prevent air pockets and cavitation.
- Automatic water makeup: Install automatic makeup water systems to replenish lost water and maintain system volume.
Corrosion Prevention
- Use corrosion-resistant materials: Select pipes, fittings, and components made of corrosion-resistant materials such as copper, stainless steel, or PEX.
- Maintain proper water pH: Adjust water pH to between 8.5 and 9.5 to reduce corrosivity.
- Inhibit cathodic and anodic reactions: Apply cathodic protection systems or anodic inhibitors to prevent th… Read full answer
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