UFC 3-240-13FN
25 May 2005
4-6.4
Cooling Water Treatment Programs ..........................................
131
4-6.4.1
Categories .................................................................................
131
4-6.4.2
Cycles of Concentration.............................................................
131
4-6.5
Treatment Program for Small Cooling Towers...........................
131
4-6.5.1
Treatment ..................................................................................
132
4-6.5.2
Testing .......................................................................................
132
4-6.6
Treatment Program for Medium and Large Cooling Towers......
132
4-6.6.1
Treatment ..................................................................................
133
4-6.6.2
Testing .......................................................................................
133
4-6.7
Cooling Tower Operator Duties .................................................
133
4-6.7.1
Cooling Tower Distribution Deck ...............................................
134
4-6.7.2
Cooling Tower Fill, Air Intake Slats, and Basin..........................
134
4-6.7.2.1
Scale Deposits on Cooling Tower Fill ........................................
134
4-6.7.2.2
Scale Deposits on Air Intake Slats.............................................
134
4-6.7.2.3
Slime Deposits...........................................................................
134
4-6.7.2.4
Suspended Solids......................................................................
134
4-6.7.3
Corrosion Test Coupons............................................................
134
4-6.7.4
Inside Surface of Heat Exchanger Tubes ..................................
134
4-6.7.5
Chiller Performance ...................................................................
135
4-6.7.6
Cooling Tower Surfaces ............................................................
135
4-7
COOLING WATER SYSTEM START-UP AND
LAYUP REQUIREMENTS..............................................................
135
4-7.1
Stand-by Conditions ..................................................................
135
4-7.2
Common Problems During Layup or Due to Improper
Initial Start-up.............................................................................
135
4-7.3
Start-up of New Cooling Water Tower Systems ........................
136
4-7.3.1
Initial Cleaning ...........................................................................
136
4-7.3.2
Cleaning and Passivation Procedures.......................................
136
4-7.3.2.1
Hydrostatic Testing ....................................................................
136
4-7.3.2.2
Pre-operational Cleaning Procedure .........................................
136
4-7.3.2.3
Chemical Cleaning and Passivation Formulation ......................
137
4-7.3.2.4
Passivation of the System .........................................................
137
4-7.3.2.5
Operational Readiness ..............................................................
137
4-7.4
Layup of Cooling Tower Systems ..............................................
138
4-7.4.1
Wet Layup of Cooling Water Systems and Equipment ..............
138
4-7.4.2
Dry Layup of Cooling Water Systems and Equipment...............
138
CHAPTER 5 CLOSED INDUSTRIAL WATER SYSTEMS
Paragraph
5-1
DEFINITION.................................................................................
139
5-1.1
Hot Water Heating Systems ......................................................
139
5-1.1.1
Hot Water Boilers.......................................................................
139
5-1.1.2
Description of Hot Water Systems .............................................
140
5-1.2
Closed Chilled Water Systems, Brine Systems, and
Glycol Systems ..........................................................................
141
5-1.2.1
Closed Chilled Water Systems ..................................................
141
5-1.2.2
Closed Brine Systems ...............................................................
142
5-1.2.3
Closed Glycol Systems ..............................................................
142
5-1.3
Combined Hot and Chilled Water Systems ...............................
142
5-1.4
Diesel Engine Jacket Cooling Systems .....................................
142
5-1.4.1
Air-Cooled Diesel Cooling Systems ...........................................
142
5-1.4.2
Water-Cooled Diesel Engine Cooling Systems .........................
143
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