UFC 3-240-13FN
25 May 2005
6-6.1.2
Relationship of P, M, and OH Alkalinities ..................................
163
6-6.2
pH (Hydrogen Ion Concentration)..............................................
165
6-6.2.1
Meaning of pH ...........................................................................
165
6-6.2.2
Relationship to Causticity ..........................................................
165
6-6.3
Conductivity and TDS ................................................................
166
6-7
IN-PLANT LABORATORY WATER TESTING REQUIREMENTS ........
167
6-7.1
Recommended Laboratory Equipment ......................................
167
6-7.2
Chemical Reagents ...................................................................
167
CHAPTER 7 WATER TREATMENT CHEMICAL FEED AND CONTROL
Paragraph
7-1
CHEMICAL FEED AND CONTROL SYSTEMS.................................
168
7-1.1
Controller Types ........................................................................
168
7-1.1.1
Cooling Tower Water Controllers...............................................
168
7-1.1.2
Boiler Water Controllers.............................................................
169
7-1.2
Chemical Pumps........................................................................
170
7-1.2.1
Feed Pumps ..............................................................................
170
7-1.2.2
Pumps of Various Types............................................................
170
7-1.3
Water Meters, Automatic Valves, and Timers ...........................
170
7-1.3.1
Water Meters .............................................................................
170
7-1.3.2
Automatic Valves .......................................................................
170
7-1.3.3
Timers........................................................................................
171
7-1.4
Other Feed Devices...................................................................
171
7-1.4.1
Bypass Feeders.........................................................................
171
7-1.4.2
Slowly Dissolving Dry Chemical Packages................................
171
7-1.4.3
Eductor Chemical Addition Systems..........................................
171
7-1.4.4
Chemical Drip Pots ....................................................................
171
7-2
CHEMICAL FEED METHODS ........................................................
171
7-2.1
Manual Water Treatment Chemical Feed ..................................
171
7-2.1.1
Chemical Pot Feeders ...............................................................
171
7-2.1.2
Dry Chemical Feeders ...............................................................
172
7-2.2
Automatic Chemical Feed with Manual Preparation ..................
172
7-2.3
Automatic Neat Chemical Feed .................................................
173
7-3
CHEMICAL CONTROL VERIFICATION...........................................
174
7-3.1
Continuous Testing....................................................................
174
7-3.2
Manual Testing ..........................................................................
174
7-3.3
Little or No Testing.....................................................................
174
7-3.4
Calibrated Mass Balance...........................................................
175
7-3.5
Automated Sensor Control ........................................................
175
7-4
SAFETY AND GENERAL INFORMATION........................................
175
7-4.1
Safety.........................................................................................
175
7-4.1.1
Handling Acid.............................................................................
175
7-4.1.2
Handling Caustic Soda (Sodium Hydroxide) .............................
176
7-4.1.3
Handling Other Chemicals.........................................................
176
7-4.1.4
Chemical Spill Kits .....................................................................
176
7-4.1.5
First Aid Information...................................................................
176
7-4.1.6
Eyewash Fountain .....................................................................
176
7-4.1.7
Safety Shower ...........................................................................
176
7-4.1.8
Safety Inspection .......................................................................
176
7-4.2
Container Management .............................................................
176
7-4.3
Chemical Storage ......................................................................
177
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