Page 353 - Corrosion Engineering Principles and Practice
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Magnesium Silica A b T a A b System Cleanliness D c D c No scale observed −12 52 40 −8 36 Basin buildup 4 20 24 50 38 Heavy scale 7 31 38 315 168 Valve scale 18 48 66 −7 223 Condenser tube scale 11 101 112 −82 320 No scale observed 19 143 162 −112 607 No scale observe
28 88 483 216 238 495 549 480 496 308 610
T a 3172 2623
13 20
D c −50 108 147 640 1264 632 680 3634 3982 2860 7862 Theoretical vs. Actual Recirculating Water Chemistry
Calcium A b 43 60 288 180 245 163 200 168 95 270 188 800 68
56 80 238 288 392 803 800 775
T a 1464 3904 4170 3,660 7930
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) D c = differencel (ppm) TABLE 8.19
324 325
