quiz 4 review Flashcards
Power Supply Nuke Service pump A
P 480V ES
Power Supply Nuke Service pump B
S 480V ES
NS V 15 power supply
1 C ESV MCC
NS-V-35
1B ESV MCC
NS-V-4
1A ESV MCC
NS-V-32
1C ESV
NS-V-52/53 a,b,c power supply
1E DC, 1F DC, 1M DC
why shouldn’t you cross connect decay closed and nuke service?
because nuke service is pressurized, overflow decay closed
what is NS-V-135 for?
excess flow check valve
scenario: lowering level in nuke service, get low level alarm in, then get an ES.
you need to push the button to reset or that interlock will stay active
IC-V-2,3,4, and 6 power supply
1B ES, 1E ES, M DC, M DC
intermediate closed pump power supply
A and B ES MCC
intermediate closed filters purpose
protect CRDM by trapping ferrous material
if you lose CRDM cooling, how long to hit trip criteria (time) and temp, and how many?
about 7 mins, 2 stators of 180F +
if IC-V-1’s are mid travel and lose power
it stops where it’s at
RCDT cooler permissive IC-V-4 operating temp
90-105
3 conditions to clsoe Ic-v-74
2 closes, 3 closes, or 4 and 6 both close
RM-L-9 location
spent fuel pool as well as surge tank
main steam stop check valves location and power supply
intermediate building, power supply C ES valves
condensor vacuum interlock
less than 23” of vacuum or less than 2 circ water pumps, MS-V-3’s close and steam goes to atmosphere
stop check valves location and alarm actions/setpoints
intermediate building. if alarm go to 90% if you can’t get it back open, go to 15%.
MS-V-13a/B open sequence/time
a opens immediately, then 53 seconds later b opens to prevent overspeeding
MS-V-10, DC operated when?
when you have low steam pressure
normal conditions of ms-v-10a/b
valves closed, breakers open
msv-2 and 8 power supply
C ES valves
EFW spray in SG and why
high, develop thermal driving head
6 circ water pump power supplies
A/D is A 4kv
B/E is B 4kv
C/F is C 4kv
Normal makeup to hotwell?
CO-V-7
if level in hotwell lowers then which go full open, which open if continues. if level is too high which opens? at what height will that valve close?
level lowers, CO 7 goes full open, if continues then 8 opens. if level is too high at 18.5’ then 6 will open, close at 150k gallons
condensate: if emergency pushbutton in control rool, what do i have to do?
break vacuum, 6 and 7 close, 8 will open.
co-v-51 begins opening at what and closes at what pressure?
begin opening at 35 and full open at 50
co-v-5 booster recirc valve conditions (2)
< 3000 gpm and > 100 psig condensate pressure
aux oil pump start pressure, stop pressure, pressure to start booster pump
5# aux oil pump starts, stops at 12#. 6# needed for booster pump start.
oil pressures in feed system and names
200# hydraulic, 55# control oil, 20# pump bearing, 12# turbine bearing
aux oil pumps for feed pump setpoint and which can they maintain?
at 43# in 55# system will start LOP8 (aux oil pump) supply all 200#
36# reaches then what starts and supplies what?
LOP9 starts and supplies up to 55# ones
electrical turbine trips (6, we care about 5)
20” vacuum (2 of 3 logic), 4# lube oil pressure in 12# header, counting circuit, co-v-9a/b close, pushbutton in control room, (thrust bearing wear)
Main feedwater isolation conditions. pressure in otsg, percent operating range, which 4 valve close?
< 600# OTSG, >97.5% in operating range, FW-V-16,92,17 and 5 will close
how many CRD do we have? divide up to what?
61, divided up 7 groups. First 4 groups are safety (8 rods each) group 5 has 12, and 6 has 8, and 7 has 9.
purpose of source interrupt?
protects control rods against stator damage (high temp)
Protects against ratchet trip (low voltage)
source interrupt: AC single rod power supply input
HI HI voltage on 2 phases of a train, shunt trip A and C (B and D)
source interupt: Low voltage on 2 phases on each of both trains?
shunt traip all 4 AC breakers
HI voltage on 1 phase of a train?
alarm and lock regulator
low voltage on 1 phase of either train?
alarm
9” asymmetric AND in limit or 0% causes what?
plant runback
Asymmetric Rod will take diamond to manual? true or false
false
pushing button takes diamond to manual?
true
solid green for crd means what?
healthy, standby is good, it’s educated
if you lose E (F) DC then you lost control power for what?
for A (B) train ES components
