R016600x

Section III - Clayton Feedwater Pumps & Water Systems

Water supply piping to the feedwater pump skid are the responsibility of the installer. For deter- mining the proper water supply pipe sizing, see Section 2.12. 3.3 CUSTOMER CONNECTIONS The required customer connections for the typical water system components and feedwater pump supply included with open and deaerator feedwater receiver systems are identified in Tables 3-1 and 3-2 below. The type and size of each is provided on supplemental drawings and instructional literature.

Table 3-1: Hot-well (Open) and Deaerator Systems

Customer Connection

Clayton- RotoJet Feedwater Pump Supply

Feedwater Pump Supply

Feedwater a Outlet

Overflow/ Drain

Condensate Returns

Traps Returns

Steam Heating

Chemical Injection

Makeup Water

Skid Type

Vent Drain Overflow

None

X X X

X X X X

X X

X X X X

X X X

X X X X

X X X

X X X X

X X X

X X X X

Condensate Skid

Water Skid

X X

X X

Generator Skid

a Feedwater outlet connections apply only on Condensate and Water Skids without Booster Pumps.

Table 3-2: Hot-well (Open) and Deaerator Systems

D/A ONLY

Customer Connections

Booster Pump(s)

Water Softener(s)

Blowdown Tank

Cooling Water Inlet

Safety Valve Out

BPR Outlet

PRV Inlet

Skid Type

Inlet Outlet Recirc Inlet Outlet Drain Inlet Outlet Vent X X X X X X X X X

None

X X

X X X X

X X X X

X X X X

Condensate Skid

X

X X X X X X

Water Skid

X X

X X

X X X X

Generator Skid

3.4 OPEN SYSTEM

(Refer to P&ID Drawings R-16099 and R-16100.) An Open System is one in which the makeup water, condensate returns (system and separator trap returns), chemical treatment, and heating steam are blended in an atmospheric Feedwater Receiver Tank, (vented to atmosphere - under no pressure). Open Feedwater Receiver Systems are sized to provide the necessary volume of feedwater and sufficient retention time for the chemical treatment to react. Conden-

3-3

07/10/2015

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