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System Pressures And Flows > System Pressures, flows, and autostarts > Flashcards

System Pressures, flows, and autostarts Flashcards

1
Q

ESW normal psig, flow

A

90psig

10,000 gpm

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2
Q

ESW autostarts

A

SI
Load sequence
Low header pressure 40 psig

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3
Q

ESW trips

A

Load shed
Overload
Overcurrent
Manual

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4
Q

ESW start times

A

Loadshed w/o si 7 seconds

Loadshed with si or cts 14 seconds

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5
Q

Nesw flow and pressure

A

80-90 psig
Min flow 2500 gpm
Max flow 4500 gpm

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6
Q

Nesw autostart

A 
Loadshed Load sequence
Si
Low pressure in auto only
U1 65 psig
U2 55 psig
Manual
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7
Q

Nesw trips

A

Loadshed
Load conservation w/ cts
Overcurrent overload
Manual

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8
Q

Cow pressure and flow

A

3000-9000 gpm

100 psig

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9
Q

Ccw pump starts

A

Si
Loadshed
Low psig on running pp discharge 80#

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10
Q

Ccw trips

A

Loadshed
Overload
Overcurrent

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11
Q

Condensate flow and pressure

A

12000 gpm

150

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12
Q

Hotwell autostart

A

Low discharge pressure on a running pump
U1 pressure 130
U2 pressure 110

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13
Q

Hotwell trips

A

Overload
Overcurrent
Manual

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14
Q

Condensate booster pump autostart

A

Low discharge pressure on running pump

325 psig

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15
Q

Condensate booster pp trips

A

Overload
Overcurrent
manual

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16
Q

Fire protection start sequence

A

Motor 140 for 2 seconds
East diesel 130 for 15 seconds
West diesel 120 for 25 seconds

17
Q

Main feed pump trips

A 
Manual
Rx trip
Si
Over speed (107%)
IOPS (110%)
Thrust bearing wear
Lo lube oil pressure 4# 5 seconds
Hi hi SG level
Low vacuum (20” hg)
Lo suction pressure 180# 5 seconds
Low trip header pressure 800#
18
Q

Feedwater isolation

A

Sg hi hi 67%
Si
Reactor trip with low tave u1 545
u2 554

19
Q

Tacw flow

A

8500 gpm u1

8800 gpm u2

20
Q

Tacw trip

A

Overload
Overcurrent
Loadshed

21
Q

Tacw autostart

A

155 psig u1

145 psig u2

22
Q

Main Feed pump trips

A 
overspeed
manual
low vacuum
excessive turbine thrust
low lube oil pressure
reactor trip
low suction header pressure
SI
high high level steam generator
23
Q

Mainfeed pump auto start

A

none

24
Q

feedwater regulating and block valves isolation

A

reactor trip with low tavg
high high steam generator level
SI

must be reset to reopen valves from the control room

25
Q

MDAFP trips

A

overload over current

loadshed

26
Q

MDAFP autostarts

A 
SI
blackout sequence 
SG lo-lo 1 out of 4 sg
both main feed pumps tripped
amsac
27
Q

TDAFP trips

A

Electronic overspeed 108%
Mechanical overspeed 111%
Manual

28
Q

TDAFP autostarts

A

RCP bus undervoltage
SG lo-lo 2/4 sg
amsac

29
Q

Load sequence

A

CEAN: CCW, ESW, AFW, NESW

30
Q

Load Sequence with an SI

A

all pumps trip off
Charging, SI, RHR, then CCW, ESW, AFW, NESW
cts signal trips NESW and replaces it with CTS

System Pressures And Flows (1 decks)

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