Table 2-11: Facility Water Quality Requirements
pH Value
6.5 to 8.2 at 77 °F (25 °C)
Electrical Conductivity
< 0.8 mmho/cm
Chloride Ion
< 200 ppm
Sulfate Ion
< 200 ppm
M-Alkalinity
< 100 ppm
Total Hardness
< 200 ppm
Calcium Hardness
< 150 ppm
Ionic Silica
< 50 ppm
Iron
< 1.0 ppm
Copper
< 0.3 ppm
Sulfide Ion
None, not detectable
Ammonium Ion
< 1.0 ppm
Residual Chlorine
< 0.3 ppm
Free Carbon Dioxide
< 4.0 ppm
Stability Index
6.0 to 7.0
Suspended Matter
< 10 ppm
Particle Size
< 100 micron (with field changeable filter)
SIGNA Voyager Pre-Installation
Direction 5680008–1EN, Revision 2
Chapter 2 General System Level
45