172-65116M-02 (CP-N) 16 Jun 2011
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(3) Flushing of pipes
Flushing of the pipes between the steam-using equipment and condensate
recovery pump should be completed. Flushing of the pipes between the
condensate recovery pump and the condensate recovery destination (e.g.
boiler) is recommended to be performed one day before the test run day, or
alternatively, on the day of the test run.
(4) Operation of steam-using equipment
Steam-using equipment should be in operation with designed condensate flow
during the test run.
Valve operation for piping blowdown before test run
Purpose
Before the test run of the condensate recovery pump, flushing of pipes for more than
12 hours is required to remove dirt, scale and oil which are inevitably present in pipes
during construction.
Flushing should be continued till the
condensate contains no foreign matter.
Valve operation for flushing
Symbol Operation
V
1
Close
V
2
Close
V
5
Open
V
6
Close
V
7
Close
ドレン
V
1
V
2
V
7
V
5
V
6
Test run
1. Operation and stoppage
(1) Verify the set pressure of the
pressure regulating valve before
test run of the condensate
recovery pump.
Symbol Operation
V
1
Close
V
2
Open
V
3
Adjust
V
4
Open
V
5
Operate
V
6
Close
V
7
Close
V
1
ドレン
P
1
V
2
V
3
V
4
H
V
5
V
6
M B
1
V
7
Close V
5
gradually and keep it in a slightly open position, and confirm V
3
operates at the pressure set to maintain the separator header pressure. At this
time, it is enough to verify that the pressure regulating valve operates. Final
adjustment is to be completed during operation of the condensate recovery
pump.
Condensate
Condensate