UFC 3-240-13FN
25 May 2005
scale control methods....................... 109
operations logs for ................................5
silica scale ........................................ 107
silica scale control ............................ 111
blowdown, and makeup ................100
types ................................................... 91
types ...................................................88
wet layup of system and equipment . 138
water distribution.................................96
Cooling water tower systems
white rust.............................................98
common problems during layup or due to
Cooling water
improper initial start-up ................. 135
testing requirements .........................151
start-up.............................................. 136
treatment
Cooling water treatment program
objectives ......................................105
categories of ..................................... 131
Cooling water fouling ............................111
chiller performance ........................... 135
fouling control....................................111
corrosion test coupons ..................... 134
Cooling water sampling
developing ........................................ 130
frequency ..........................................152
equipment ......................................... 130
procedures ........................................152
medium and large towers ................. 132
Cooling water systems..............................1
operational features and parameters 130
calcium carbonate scale ...................106
operator duties.................................. 133
calcium carbonate scale control using
small cooling towers ......................... 131
sludge-forming polymers...............110
water quality...................................... 131
calcium carbonate scale control using
Corrosion .................................................. 2
solubilizing chemicals....................110
boiler ................................................... 51
calcium carbonate scale control using
control methods ................................ 128
solubilizing polymers .....................110
crevice corrosion............................... 125
calcium carbonate scaling indices ....108
effective corrosion control................. 128
calcium phosphate scale...................106
galvanic corrosion............................. 123
calcium phosphate scale control using
general........................................ 51, 124
solubilizing inhibitors .....................110
microbiologically influenced corrosion125
calcium sulfate scale control using
under-deposit corrosion .................... 125
solubilizing polymers .....................111
Corrosion control
chemical cleaning and passivation
anodic inhibitors................................ 128
formulation ....................................137
cathodic inhibitors ............................. 128
common problems...............................97
for copper and copper alloys ............ 129
cooling towers .......................................1
for deposit corrosion ......................... 129
corrosion ...........................................122
for galvanic or crevice corrosion ....... 129
deposit formation and control............105
for MIC .............................................. 129
determining COC to control operations
general inhibitors .............................. 129
......................................................107
Corrosion testing .................................. 161
determining scaling potential ............105
Cycles of concentration .......................... 40
dry layup of system and equipment ..138
Cyclohexylamine .................................... 61
DEAE...................................................... 61
evaporative coolers ...............................1
Deaerator operation................................ 53
hydrostatic testing .............................136
Dealkalization ................................... 12, 25
Legionella bacteria..............................99
Decarbonization...................................... 28
magnesium silicate scale control ......111
Definitions
objectives of treatment ......................105
algae ................................................. 113
once-through systems.....................1, 88
basin ................................................... 95
open recirculating systems .................88
biological............................................... 2
operational readiness........................137
brining ................................................. 20
passivation ........................................137
cell ...................................................... 96
pre-operational cleaning procedure ..136
closed water system ......................... 143
principles of operation.......................100
cold well .............................................. 95
scale..................................................105
239