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TABLE OF CONTENTS
i Title page ............................................................... 1
ii Introduction ............................................................ 2
iii Index ...................................................................... 3
1.0 PRINCIPLES OF DEAERATION
1.1 Corrosion ........................................................... 4
1.2 Common Gases.................................................. 4
1.2.1 Oxygen ............................................................ 4
1.2.2 Carbon Dioxide ............................................... 4
2.0 PHYSICAL LAWS
2.1 Boyle’s Law ........................................................ 5
2.2 Dalton’s Law ...................................................... 5
2.3 Henry’s Law ....................................................... 5
2.4 Summary ........................................................... 5
3.0 MECHANICS OF DEAERATION ........................... 6
4.0 OPERATION ....................................................... 6
5.0 RECEIVING / INSPECTION
5.1 Installation ........................................................ 8
5.1.1 Accessibility .................................................... 8
5.1.2 Foundations ................................................... 8
5.1.3 Rigging ............................................................ 8
5.1.4 Piping .............................................................. 8
5.1.5 Water Inlet Valve ........................................... 8
5.1.5.1 Valve with integral float chamber .............. 8
5.1.5.2 Valve with internal float ............................. 9
5.1.5.3 Valve with separate external float
operator (Mechanical type) ..................................... 9
5.1.5.4 Valve with external float operator
(Pneumatic type) ...................................................... 9
5.1.6 Overflow Trap ................................................ 9
5.1.7 Insulation ....................................................... 9
5.2 Deaerator Flows ................................................ 9
5.2.1 Make-Up Water ............................................. 9
5.2.2 Low Temperature Returns ............................. 9
5.2.3 Medium Temperature Returns ...................... 9
5.2.4 High Temperature Returns ............................ 9
5.2.5 Oil Contaminated Returns ............................. 9
5.2.6 Steam............................................................ 10
5.2.6.1 Definitions ................................................. 10
5.2.6.2 Procedures .............................................. 10
6.0 ACCESSORIES
6.1 Relief Valve ..................................................... 11
6.2 Vacuum Breaker ........................................................... 11
6.3 Vessel Pressure Gauges ................................................. 11
Steam Velocity Chart ............................................................ 12
Example ................................................................................. 13
7.0 SYSTEM START-UP
7.1 After installation ........................................................... 13
7.1.1 Inspect all ................................................................... 13
7.1.2 Thoroughly flush ........................................................ 13
7.1.3 Ascertain ..................................................................... 13
7.2 Initial Start-Up, Cold (No steam available) .................. 13
7.3 Initial Start-Up, hot (steam available) ......................... 14
7.4 Venting .......................................................................... 14
8.0 SHUT-DOWN
8.1 Temporary (overnight, weekend, etc.) ........................ 15
8.2 Long Term Idle Periods.................................................. 15
9.0 START-UP AFTER SHUT-DOWN
9.1 Pressure maintained. ..................................................... 15
9.2 Pressure not maintained. .............................................. 15
10.0 OPERATING RECORD. .................................................. 15
11.0 MAINTENANCE
11.1 Vessel. .......................................................................... 15
11.1.1 Bi-weekly. ................................................................ 15
11.1.2 After first month of operation. ................................ 16
11.1.3 Semi-Annually. ......................................................... 16
11.1.4 Annually. .................................................................. 16
11.1.5 Frequently. ............................................................... 16
11.2 Pumps .......................................................................... 16
11.2.1 Packing ..................................................................... 16
11.2.2 Bearings .................................................................... 16
12.0 TROUBLESHOOTING
12.1 Low Temperature ........................................................ 17
12.1.1 Insufficient steam..................................................... 17
12.1.2 Insufficient venting .................................................. 17
12.2 Vibration, Rumble and Hammer ................................. 17
12.2.1 Low steam pressure ................................................. 17
12.3 Oil Contamination ....................................................... 17
12.3.1 Condensate ............................................................... 17
12.3.2 Improper grade of oil ............................................... 17
12.3.3 Oil separator not draining properly ......................... 17
12.4 Water Level ................................................................... 17