Water-chemistry: 500 MW

Recommended Parameter Values
1. Boiler Water – pH = 9.1-9.4
2. Boiler Water – Specific Conductivity < 20.0 μs/cm
3. Boiler Water – Silica < 100 ppb
4. Boiler Water - Phosphate = 1-2 ppm
5. Boiler Water - Chloride < 0.5 ppm

6. Deaerator Outlet – Dissolved Oxygen < 7 ppb
7. Feed Water – Dissolved Oxygen < 5 ppb
8. Feed Water – Hydrazine = 10-20 ppb
9. Feed Water – pH = 9.0-9.2
10. Feed Water – Specific Conductivity < 5 μs/cm
11. Feed Water – Cation Conductivity < 0.2 μs/cm
12. Make-up Water at pump discharge– Specific Conductivity < 0.3 μs/cm
13. Make-up Water at pump discharge– Cation Conductivity < 0.5 μs/cm
14. Main Steam – Specific Conductivity < 5 μs/cm
15. Main Steam – Cation Conductivity < 0.2 μs/cm
16. Main Steam – pH = 9.0-9.2
17. Main Steam – Sodium < 10.0 ppb
18. Condensate Polisher Outlet – Sodium < 5 ppb
19. Condensate Polisher Outlet – Silica < 5 ppb
20. Condensate Polisher Outlet – Sp. Conductivity < 5 μs/cm
21. Condensate Polisher Outlet – pH = 6.8-9.2
22. Condensate Polisher Outlet – Cation Conductivity < 0.1 μs/cm
23. Hotwell Condensate Left– Sp. Conductivity = 3-5 μs/cm
24. Hotwell Condensate Right– Sp. Conductivity = 3-5 μs/cm
25. CEP Discharge – Cation Conductivity < 0.2 μs/cm
26. CEP Discharge – Sodium < 5 ppb
27. CEP Discharge – Dissolved Oxygen < 20 ppb
28. CEP Discharge – pH = 9.0-9.2
29. CEP Discharge- Specific Conductivity < 5 μs/cm
30. Saturated Steam – pH = 9.0-9.2
31. Saturated Steam – Sp. Conductivity = 3-5 μs/cm
32. Saturated Steam – Cation Conductivity < 0.2 μs/cm