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ANO1 ILO 2022 > RCS > Flashcards

RCS Flashcards

1
Q

Why do we have to close CV-1009 when using aux spray?

A

protect aux spray line from LPI/HPI, no thermal sleeving

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2
Q

Code Safeties lift @

A

2500 psig

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3
Q

ERV opens @
ERV closes @

Also opens @ ___ when selected to LTOP

A

2450 PSIG

400 PSIG

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4
Q

high pressure alarm?

A

2255 PSIG

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5
Q

High pressure reactor trip setpoint?

A

2355 psig

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6
Q

what level do heaters interlock off?

A

55 inches

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7
Q

what pressure does spray valve open?

A

2205 psig

2080 psig when mfp trips >80% power

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8
Q

what is NOP?

A

2155 psig

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9
Q

ERV LTOP setpoint

A

400 psig

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10
Q

core flood valve alarm pressures and which direction

A

700 psig decreasing

750 psig increasing

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11
Q

Low-Low RCS pressure alarm

A

1640 psig

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12
Q

Low pressure reactor trip

A

1800 psig

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13
Q

Low pressure RCS alarm

A

2055 psig

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14
Q

how are the 3 OTSG heat transfer regions affected on an up power?

A

Nucleate boiling gets larger
film boiling region stay the same
superheat region becomes smaller

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15
Q

Where is tap for letdown?

A

‘A’ RCP suction

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16
Q

where is makeup tap off?

A

‘D’ RCP Discharge

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17
Q

where does spray tap off/come from?

Aux Spray?

A

‘C’ RCP discharge

LPI/HPI

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18
Q

Which loop is the PZR in?

A

‘A’ Loop

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19
Q

4 conditions for Nat Circ

A

hydraulic coupling
density change
elevational diff between heat sink and source
heat removal from ADVs or TBVs

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20
Q

1 degree change in RCS temp equals ____ inch change in PZR

21
Q

why is there a 1 gpm bypass around spray valve?

A

prevent thermal shock if/when spray is used.

22
Q

how can we determine PZR pressure during transient?

A

its the same as RCS press.. duh

23
Q

Where does decay heat removal tie into?

A

‘A’ Loop

24
Q

instrumentation associated with RCS located on hot leg are: (3 of them)

A

flow, temp, pressure

25
What does the high pressure lift oil pump do?
supplies oil to kingsbury thrust bearing. makes it easier to start
26
Back stop lube oil pump purpose?
supplies oil to anti-rotation device and radial bearing.
27
List RCP Starting interlocks
* <22% power * seal injection >3gpm * motor ICW cooling >250gpm * seal cooling >30 gpm * A,C,D - upper oil level >-2.0 in..........B >-1.6in * A,C,D - motor lower oil level >-1.5 in........B >-1.2in * A,C,D - lift pressure > 1750 psig........B > 1000psig * no reverse rotation, <12.7 gpm oil flow * Tcold > 465F to start 4th pump
28
give numbers for each pressure seal breakdown
2155# -> 1st seal -> ~1500# -> 2nd seal -> ~750# -> 3rd seal -> atm
29
short description of seal injection with flows.
8-10 gpm seal injection, aux impeller moves some thru ICW cooler, 1.5 gpm goes thru each seal as controlled leakoff. this happens for each rcp
30
if bleedoff flow dropped to 0 what does this indicate?
3rd stage seal failed
31
why is seal bleedoff diverted to quench tank on RB isolation?
maintain seal staging
32
3 minute blow thru ERV results in quench tank pressure rise of
<= 1 psig
33
RCS press, temp, and flow DNB Limits Tech spec
LCO: RCS DNB within CLR Limits Mode 1 No 1 hour
34
RCS Min Temp for Criticality Tech Spec
LCO: rcs tave >=525F Modes 1 & 2 Actions: not within limit, be in mode 3, 30 min
35
RCS press and temp limits tech spec
LCO: RCS press, temp, heatup/cooldown rates within limits All modes Actions: not within limits, be in mode 3, 30 minutes
36
RCS Loops - Modes 1 & 2 Tech Specs
LCO: 2 rcs loops in operation wiht 4 rcps operating OR 3 rcps operating and thermal power restricted by COLR Modes 1 & 2 No 1 hour
37
RCS loops Mode 3 tech spec
LCO: 2 rcs loops operable and 1 rcs loop in operation Mode 3 Actions: 2 loops inop or req'd loop not operable, suspend intro to rcs ops AND initiate action to restore 1 loop to operable, Immediately
38
RCS loop mode 4 tech spec
LCO: 2 loops of any combo (rcs loops, DH loops) operable and 1 in operation Mode 4 Actions: 1 req'd loop inop, initiate to restore, immediately 2 req'd loops inop OR req'd loop not operating, suspend intro ops AND initiate to restore to operable and operation, immediately
39
RCS loop Mode 5 loops filled tech spec
LCO: 1 DHR loop operable and in operation and either 1 additional DHR loop operable OR secondary side of SG >=20in Mode 5 loops filled Actions: 1 DHR loop inop OR 1+ SG water level not in limits OR no req'd DHR loop operable or in operation, All immediately
40
RCS loops - mode 5 loops not filled
LCO: 2 DHR loops operable and 1 in operation Mode 5 loops not filled Actions: 1 DHR inop OR no dhr loop operable or i/s, restore, immediately
41
Pressurizer tech spec
LCO: PZR operable with <=320 inch water level Min of 126 kw ES bus powered heaters operable modes 1, 2, 3.......4 RCS >259F Actions: water level not within limits, restore, 1 hour
42
PZR safety valve tech spec
LCO: 2 PZR safety valves oeprable Modes 1, 2, 3.....4 RCS > 259F Actions: 1 inop in mode 1 or 2, restore to operbale, 15 min
43
PZR safety valve tech spec
2 pzr safety valves operable modes 1, 2 mode 3....mode 4 rcs temp >259F only 1 needed operable Actions: 1 pzr safety valve inop mode 1 or 2, restore to operable, 15 min
44
LTOP Tech spec
LCO: LTOP operable with HPI deactivated and CFT isolated modes: 4 w/ RCS <= 259F,,, Mode 5,,,,,Mode 6 with Rx vessel head on Actions: level not met, restore, 1 hr ERV inop, restore to operable, 1 hr
45
rcs specific activity tech spec
LCO: does equiv I-131 and dose equiv XE-133 within limits Modes 1, 2, 3, & 4 No actions 1 hr
46
RCS leakage tech spec
LCO: leakage limited to no pressure boundary leakage, 1 gpm unidentified, 10 gpm identified, 150 gal/day pri to sec thru 1 sg Modes 1, 2, 3, & 4 no 1 hr actions
47
RCS Pressure isolation valve leakage tech spec
LCO: leakage from each PIV within limits 1, 2, & 3.....4 except valves in DHR flow path while in operation no 1 hr action
48
RCS leakage detection tech spec
LCO: following operable: 1 RB sump monitor and 1 RB atm radioactivity monitor Modes 1, 2, 3, 4 no 1 hr actions
49
SG tube tech spec
LCO: tube integrity maintained AND all tubes satisfying plugging criteria 1, 2, 3, 4 no 1 hour action

ANO1 ILO 2022 (12 decks)

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