Section 16 - Water Quality
Table 16-1
Detailed Water Quality Specification
Constituents
Units
Closed Loop
Tower Water
pH
pH Units
7.2 - 8.5
7.2 - 8.5
“M” Alkalinity
ppm
N/A
< 500
“P” Alkalinity
ppm
0
0
Total Hardness (as CaCO
3
)
ppm
< 10
60 - 800
Calcium Hardness (as CaCO
3
)
ppm
< 10
60 - 800
Conductivity
μmhos/cm
< 3000
1000 - 2000
Ryznar Stability Index
RSI
5.0 - 6.0
5.0 - 6.0
Cations
Aluminum (as Al)
ppm
< 0.1
< 0.1
Copper (as Cu)
ppm
< 0.05
< 0.1
Manganese (as Mn)
ppm
< 0.05
< 0.05
Total Iron (as Fe)
ppm
<0.5
< 0.1
Anions
Free Chlorine (as Cl
2
)
ppm
0
< 1.0
Chloride (as Cl)
ppm
< 400
< 400
Sulfate (as SO
2
)
ppm
< 300
< 300
Silica (as SiO
2
)
ppm
< 150
< 150
Microbiological Activity
Sulfate Reducing Bacteria
Col./ml
< 1
< 1
Total Aerobic Bacteria
Col./ml
< 10 000
<10 000
Solids
Suspended Solids
ppm
< 10
< 10
Solid Size
μm
< 5
< 5
Maximum Corrosion Rate (of 90 Day Test Specimens, If Used)
Aluminum
mils Per Year
< 0.25
< 0.5
Copper
mils Per Year
< 0.25
< 0.2
Mild Steel
mils Per Year
< 1.0
< 2.0
Zinc
mils Per Year
< 2.0
< 2.0
16-1
WATER QUALITY
E-Multi User Manual
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