MIL-HDBK-1003/6
Page
4.9.3
Expansion Vessel Volume for Steam Pressurized
Systems . . . . . . . . . . . . . . . . . .
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39
4.9.3.1
Volume Required for Pressurization . . . . .
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41
4.9.3.2
Volume Required for Expansion and Contraction
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41
4.9.4
Expansion Vessel Volume for Gas Pressurized
Systems . . . . . . . . . . . . . . . . . .
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42
4.9.4.1
Volume Required for Pressurization . . . . .
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42
4.9.4.2
Volume Required for Expansion and Contraction
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42
4.9.4.3
Design Criteria for Steam Pressurized Systems
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43
4.9.5
Design Criteria for Gas Pressurized Systems .
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44
4.10
Pumps . . . . . . . . . . . . . . . . . . . .
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44
4.10.1
Pump Types . . . . . . . . . . . . . . . . .
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44
4.10.2
Pump Acceptance Tests . . . . . . . . . . . .
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45
4.10.3
Constant versus Variable Speed Pumps . . . .
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45
4.10.4
Net Positive Suction Head . . . . . . . . . .
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45
4.10.5
One-pump versus Two-Pump Systems . . . . . .
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45
4.10.6
Single-versus Multiple-Stage Pumps . . . . .
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46
4.10.7
Location . . . . . . . . . . . . . . . . . .
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46
4.10.8
Miscellaneous . . . . . . . . . . . . . . . .
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46
4.11
Controls . . . . . . . . . . . . . . . . . .
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47
4.11.1
Combustion Controls for Forced Circulation
Generators with Steam Pressurized Systems .
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47
4.11.2
Combustion Controls for Forced Circulation
Generators with Inert Gas Pressurized
Systems . . . . . . . . . . . . . . . . . .
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47
4.11.3
Water Flow Control for Steam Pressurized HTW
Systems with Forced Circulation Generators
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47
4.11.3.1
Plants with Combination System and Boiler
Circulating Pumps . . . . . . . . . . . . .
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47
4.11.3.2
Plants with Separate Generator Circulating
Pumps in Use with System Circulating Pumps
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48
4.11.3.3
Makeup Water Flow Control . . . . . . . . . .
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48
4.11.3.4
Automatic Isolation Valves . . . . . . . . .
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49
4.11.4
Water Flow Control for Steam Pressurized HTW
Systems with Natural Circulation Generators
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49
4.11.5
Water Flow Control for Inert Gas Pressurized
Systems . . . . . . . . . . . . . . . . . .
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49
4.11.6
Overflow Control on Steam Pressurized
Expansion Tanks . . . . . . . . . . . . . .
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49
4.12
Piping . . . . . . . . . . . . . . . . . . .
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49
4.13
Valves . . . . . . . . . . . . . . . . . . .
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50
4.14
Space and Process Heating Equipment . . . . .
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50
4.14.1
Direct Heating with High Temperature Water .
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50
4.14.2
Indirect High Temperature . . . . . . . . . .
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51
4.15
Makeup Water and Water Treatment . . . . . .
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51
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