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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

A

5 inch

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
Q

What does the high pressure lift oil pump do?

A

supplies oil to kingsbury thrust bearing. makes it easier to start

26
Q

Back stop lube oil pump purpose?

A

supplies oil to anti-rotation device and radial bearing.

27
Q

List RCP Starting interlocks

A
  • <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
Q

give numbers for each pressure seal breakdown

A

2155# -> 1st seal -> ~1500# -> 2nd seal -> ~750# -> 3rd seal -> atm

29
Q

short description of seal injection with flows.

A

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
Q

if bleedoff flow dropped to 0 what does this indicate?

A

3rd stage seal failed

31
Q

why is seal bleedoff diverted to quench tank on RB isolation?

A

maintain seal staging

32
Q

3 minute blow thru ERV results in quench tank pressure rise of

A

<= 1 psig

33
Q

RCS press, temp, and flow DNB Limits Tech spec

A

LCO: RCS DNB within CLR Limits
Mode 1
No 1 hour

34
Q

RCS Min Temp for Criticality Tech Spec

A

LCO: rcs tave >=525F
Modes 1 & 2
Actions: not within limit, be in mode 3, 30 min

35
Q

RCS press and temp limits tech spec

A

LCO: RCS press, temp, heatup/cooldown rates within limits
All modes
Actions: not within limits, be in mode 3, 30 minutes

36
Q

RCS Loops - Modes 1 & 2 Tech Specs

A

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
Q

RCS loops Mode 3 tech spec

A

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
Q

RCS loop mode 4 tech spec

A

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
Q

RCS loop Mode 5 loops filled tech spec

A

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
Q

RCS loops - mode 5 loops not filled

A

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
Q

Pressurizer tech spec

A

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
Q

PZR safety valve tech spec

A

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
Q

PZR safety valve tech spec

A

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
Q

LTOP Tech spec

A

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
Q

rcs specific activity tech spec

A

LCO: does equiv I-131 and dose equiv XE-133 within limits

Modes 1, 2, 3, & 4

No actions 1 hr

46
Q

RCS leakage tech spec

A

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
Q

RCS Pressure isolation valve leakage tech spec

A

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
Q

RCS leakage detection tech spec

A

LCO: following operable: 1 RB sump monitor and 1 RB atm radioactivity monitor

Modes 1, 2, 3, 4

no 1 hr actions

49
Q

SG tube tech spec

A

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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