System Pressures, flows, and autostarts

Question 1

ESW normal psig, flow

Answer 1

90psig

10,000 gpm

Question 2

ESW autostarts

Answer 2

SI
Load sequence
Low header pressure 40 psig

Question 3

ESW trips

Answer 3

Load shed
Overload
Overcurrent
Manual

Question 4

ESW start times

Answer 4

Loadshed w/o si 7 seconds

Loadshed with si or cts 14 seconds

Question 5

Nesw flow and pressure

Answer 5

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

Question 6

Nesw autostart

Answer 6

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

Question 7

Nesw trips

Answer 7

Loadshed
Load conservation w/ cts
Overcurrent overload
Manual

Question 8

Cow pressure and flow

Answer 8

3000-9000 gpm

100 psig

Question 9

Ccw pump starts

Answer 9

Si
Loadshed
Low psig on running pp discharge 80#

Question 10

Ccw trips

Answer 10

Loadshed
Overload
Overcurrent

Question 11

Condensate flow and pressure

Answer 11

12000 gpm

150

Question 12

Hotwell autostart

Answer 12

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

Question 13

Hotwell trips

Answer 13

Overload
Overcurrent
Manual

Question 14

Condensate booster pump autostart

Answer 14

Low discharge pressure on running pump

325 psig

Question 15

Condensate booster pp trips

Answer 15

Overload
Overcurrent
manual

Question 16

Fire protection start sequence

Answer 16

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

Question 17

Main feed pump trips

Answer 17

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#

Question 18

Feedwater isolation

Answer 18

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

Question 19

Tacw flow

Answer 19

8500 gpm u1

8800 gpm u2

Question 20

Tacw trip

Answer 20

Overload
Overcurrent
Loadshed

Question 21

Tacw autostart

Answer 21

155 psig u1

145 psig u2

Question 22

Main Feed pump trips

Answer 22

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

Question 23

Mainfeed pump auto start

Answer 23

none

Question 24

feedwater regulating and block valves isolation

Answer 24

reactor trip with low tavg
high high steam generator level
SI

must be reset to reopen valves from the control room

Question 25

MDAFP trips

Answer 25

overload over current | loadshed

Question 26

MDAFP autostarts

Answer 26

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

Question 27

TDAFP trips

Answer 27

Electronic overspeed 108% Mechanical overspeed 111% Manual

Question 28

TDAFP autostarts

Answer 28

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

Question 29

Load sequence

Answer 29

CEAN: CCW, ESW, AFW, NESW

Question 30

Load Sequence with an SI

Answer 30

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