Page 356 - Corrosion Engineering Principles and Practice

Observation No scale observed Basin buildup Heavy scale Valve scale Condenser tube scale No scale observed No scale observed No scale observed No scale observed Slight valve scale No scale observed No scale observed No scale observed

0.25 0.09 0.12 0.16 0.35 0.49 0.52 0.33 0.27 0.35 0.44 0.55 0.10
A b
Silica

T a 0.20 0.06 0.10 0.13 0.21 0.35 0.40 0.10 0.22 0.31 0.22 1.31 1.74

<0.001
A b 0.02 0.12 0.55 0.46 0.73 0.17 0.06 <0.01 0.36 0.36 0.59 0.14
Brucite

<0.001
T a 0.82 2.4 1.3 3.0 5.3 10 53 10 7.4 4.6 254 7.6

0.02
A b 5.4 611 50 72 51 28 26 6.5 62 74 37 65 Theoretical vs. Actual Recirculating Water Saturation Level
Calcite

T a 0.03 49 89 106 240 540 598 794 809 1198 1670 3420 7634

System (Category) 1 (1) 2 (2) 3 (2) 4 (2) 5 (3) 6 (3) 7 (3) 8 (3) 9 (3) 10 (3) 11 (3) 12 (3) 13 (3) T a = theoretical (ppm) A b = actual (ppm) TABLE 8.20

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