3.10.2 Feed Water Valve Specification ................................................................................... 42
3.10.3 Bronze Liner .................................................................................................................. 43
3.10.4 Replacing the bronze liner ............................................................................................ 43
3.10.5 Feed Water Valve Sizing Calculations ......................................................................... 44
3.10.6 Flanged Feed Water Valve ........................................................................................... 45
3.10.7 Threaded Feed Water Valve ........................................................................................ 46
3.10.8 Replacing the Servomotor for a Feed water Valve ....................................................... 48
3.10.9 Storage, Operation and Maintenance ......................................................................... 50
4 TOTAL DISSOLVED SOLIDS MANAGEMENT ............................................................ 51
4.1 Philosophy of TDS Control System ........................................................................................ 51
4.2 TDS Probe Calibration .......................................................................................................... 52
4.3 Method of TDS Control ......................................................................................................... 56
4.3.1 Timing Diagram ............................................................................................................ 56
4.3.2 Continuous TDS Blowdown ........................................................................................... 57
4.3.3 Solenoid Valve TDS Blowdown .................................................................................... 57
4.3.4 Installation of TDS Probe Assembly .............................................................................. 58
4.4 TDS Probe and Autoflame Sampling Vessel ......................................................................... 59
4.5 Top Blowdown Adjusters ...................................................................................................... 60
4.6 Sample Routine ..................................................................................................................... 62
4.7 Relationship between Conductivity, Temp and TDS Values .................................................. 63
5 BOTTOM BLOWDOWN .......................................................................................... 64
5.1 Overview of Bottom Blowdown ............................................................................................ 64
5.1.1 Features and Benefits .................................................................................................... 64
5.1.2 Bottom Blowdown Time Reduction ................................................................................ 65
5.1.3 Bottom Blowdown Valve Drawings ............................................................................... 68
5.1.4 Front Facia and Dimensions .......................................................................................... 70
5.2 Bottom Blowdown Configuration .......................................................................................... 71
5.2.1 Bottom Blowdown Options ........................................................................................... 71
5.2.2 Commissioning Bottom Blowdown Module with M.M. ................................................. 75
5.2.3 Battery Test ................................................................................................................... 79
5.2.4 Bottom Blowdown Timer Configuration ........................................................................ 80
5.3 Commissioning Standalone Bottom Bl
owdown Module........................................................ 83
5.4 Bottom Blowdown Operation ............................................................................................... 87
5.5 Further Bottom Blowdown Time Reduction Savings Calculations .......................................... 90
5.6 Shunt Switch ......................................................................................................................... 96
5.6.1 Shunt Switch Philosophy ............................................................................................... 96
6 STEAM AND HEAT FLOW METERING ...................................................................... 97
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