SIM phase one liners

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64 Terms

1
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when EWA is cross tied to NC, why does a SIAS disconnect the two systems

ensures SDHX has adequate flow

2
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what is the minimum flow to run CS indefinitely? what is the 1 hour miniflow GPM

3200 GPM for indefinite run, 150 GPM for 1 hour through the mini flow

3
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when the CW crosstie is closed and starting the second CW pump, what is discharge valve logic ?

the seconds pumps discharge valve goes 44% open and holds for 3 minutes, then opens to 100% open. following this the 1st pumps discharge valve then opens to 100% open

4
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what is lost on a loss of PKA-M41?

lose letdown, 2 ADVs, and only one RTSG breaker opens

5
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a FBEVAS actuates, a short time later a SIAS actuates, what is the status of the FB exhaust HVAC?

swaps essential exhaust to the suction of the 100ft and below of the aux building

6
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where are RAD monitors and their pumps powered from?

PN for the monitors and PH for the pumps

7
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what is the status the RCP HP seal cooler valves normally?

normally open and de-energized

8
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the RX is subcritical, TCOLD is 565F, PZR is 2250 PSIA, an inadvertent dilution occurs, what is going to happen with no operator action?

results in a positive startup rate with no rod motion, this then causes a RX trip on HI log power

9
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how does QSPDS interface with PPS?

PPS A and B have additional inputs to QSPDS not on PPS C and D

10
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during a LBLOCA the following conditions are found

CTMT pressure 22 PSIG and raising

SG1 LVL 22% WR and raising and 430 PSIA

SG 2 LVL 22% WR and lowering and 345 PSIA

what ESFAS signals are present

SIAS, CIAS, MSIS, AFAS 1+2

11
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if the PPCS master fails to 0, what affect will it have on SBCS?

SBCS will modulate open at a lower steam pressure

12
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the SG is at 1100 PSIA, the MFP discharge pressure is 1085 PSIA, with no operator actions what will happen?

Rx trip on low SG water level

13
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if pressure control system is selected to X, and Y fails high, what will happen?

no auto actions will occur, but you will get deviation alarms

14
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PLCS is selected to X in auto, a loss of NNN-D11 occurs, what will happen to letdown?

letdown isolates due to a 0 output failure.

15
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U1 has tripped, the RDT level and pressure is rising, safety valves are at 9%, what will happen to PZR level

PZR level will initially lower and then level will rise when saturation temp is reached.

16
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with steam flow constant and ARO with CEDMCS is auto sequential while reducing load, an operator then opens 1006, what happens to the CEAs?

CEAS will start stepping in

17
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during an approach to criticality what actions are taken on the main turbine

stop main turbine startup and warmup during approach to criticality

18
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what is the concern with operating the turbine with load below 5%?

operation of the turbine with load below % causes erosion of late stage buckets

19
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a leak in the charging system occurs and renders the normal injection flow path inoperable. if the HPSI B long term recirc is not available, where will CH discharge be aligned to?

A HPSI cold leg injection

20
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what is required on a large NC leak on combined discharge to the chillers?

Trip the Rx, secure RCPs, and isolate seal bleedoff

21
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what alternative action can be taken to cool the RCP thrust bearing temps?

you can start the lift oil pump to cool the RCP thrust bearing temps

22
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what actions are taken when 1700 PSID is observed across 1 RCP seal?

commence a shutdown (NOT A RX TRIP)

23
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what happens to HP seal cooler inlet temp when seal injection is isolated, what is expected to happen to the other seals?

HP seal cooler inlet temp will rise to 200-220 F when seal injection is isolated, all other seal temps are expected to remain the same

24
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seal pressures read as follows

  1. 2250

  2. 1200

  3. 80

bleed off flow is 4.5 GPM

where is the seal failure located

located on seal 3

25
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if CHB515 is closed due to invalid temp interlock, what actions can be taken to open the valve?

can be opened by I and C putting a jumper in

26
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what happens to MSIV and FWIVs on a loss of IA with no N2 backup?

fails as is with fast closure available?

27
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the main turbine operating at 375 MW and the SBCS COND INTLK is in, what actions should be taken

trip the RX and leave SBCS in auto

28
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the main turbine is operating at 270 MW with vacuum as follows

A. 4.2

B. 4.5

C. 4.8

what actions need to be taken based on these parameters?

must reduce to less than 4 inches within 50 minutes

29
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what must be performed to clear a turbine setback?

load limit pot must be turned down to until limiting light is on to clear turbine setback

30
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what actions are taken on a RPCB LOFP if load is greater than 890 MW?

manually lower the pot to 65% power

31
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what actions are taken following a MFP trip, what actions are take if a CEA slips or RPCB fails

trip the RX

32
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what actions are taken if a CEA is dropped and subsequently another slips greater than 9.9 inches?

trip the RX

33
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what is required if COLSS is OOS at 100% and CEA slips to 50 in withdrawn?

declare DNBR LCO not met per conditon B

34
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what actions are taken if a 12 finger CEA slips to 10 inches?

monitor DNBR and LPD in unaffected quadrants

35
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while operating at 50% power unit 1 experiences a LOOP, following this 1 A TCOLD fails hi? what will happen with no operator actions and what actions should be take to prevent this

DFWCS will feed max feed in RTO. this is prevented by selecting loop 2 to prevent max feed

36
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Unit 1 experiences and inadvertent CSAS what actions are taken prior to restoring IA to CTMT

take 516 and 515 to close to prevent inadvertent opening when restoring IA

37
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how is CS pump started following an inadvertent CSAS with a SIAS occurring after the CS pump is stopped

take the hand switch to start twice

38
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following a Rx trip the following conditions are present

SG1 880psia,

SG2 500psia,

SG1 lvl 68%WR,

SG2 lvl 0%WR,

PZR lvl 28% and lowering,

Ctmt press 2.8psig and 210dF

what actions should be performed?

use normal values in SPTA and Harsh values in ORP

39
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if a safety function is not met for unknown reasons in ORP and SFSC trending towards normal what is required

exit the ORP and enter FR due to loss reason unknown

40
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U1 experiences a RX trip, Turbine trip, and PPB lockout, what pump will be used to feed the SG?

feed with AFN

41
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U1 experiences a reactor trip, the EOP is entered, PZR pressure is 2210 and lowering. is safety function met?

no, pressure safety function not met due to trend

42
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U1 RCS pressure drops with a subsequent undervoltage on the grid? what is expected to happen on the grid as a result?

WRF breakers trip, this is to prevent double sequencing of both U1 class busses

43
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SPTAS are complete, the following is observed PZR pressure 1810psia and lowering, subcooling 20dF lowering, ctmt temp 145dF rising, ctmt pressure 5psig rising, 4 RCPs running.

what actions are required

Trip all 4 RCPs

44
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If CTMT is flooded what effect does this have on CTMT cooling water?

cannot restore CTMT cooling water due to MOVs being submerged

45
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what is the minimum CS pump flow to meet safety function during a LBLOCA

CS flow minimum of 4350 GPM

46
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how is letdown effected from an RCS leak into LDHX?

results in back pressure control valves closing to raise backpressure

LDHX becomes hot and isolates letdown

47
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who can perform contaminated management implementation?

any SRO

48
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who ensures that locked valve control is performed correctly

CRS/SM

49
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what is required on a human error resulting in a TSCR?

a CR must be written

50
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what is the purpose of the LCO for RWT level?

basis ensures sufficient volume in CTMT sump for a RAS

51
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if COLSS is out of service and LHR is not acceptable, what is required?

determine LHR trend every 15 minutes

52
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if RTSG A breaker wont open what is required?

open A and C in 1 hour

53
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what is the assumed small break loca single failure?

assumed small break loca with a failed DG

54
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an ALERT is declared, who will direct performance of the standard appendices and who will direct actions to support maintenance

control room directs standard appendices

OSC directs support of maintenance

55
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if operating at 100% with a loss of NAN-S02, what will happen to XENON

will increase due to less burnout

56
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what affect will lower RCS pressure and lower grid frequency have on DNBR margin?

will result in lower DNBR

57
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why is total stress on the inner wall during cooldown greater than on a heatup

because both stresses on the inner wall are tensile during a cooldown

58
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how is planar radial peaking factor in CPCs calculated?

CPCs use CEA positions from RSPTs and calculated impact of misalignment is determined by look up tables

59
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if COLSS is out of service and LHR is not in limits per LCO 3.2.1 what is required?

determine the LHR trend every 15 minutes

60
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when are CPC trips placed in service?

CPC trips are placed in service when power reaches 10E-4% power

61
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U2 experiences a Rx trip, If RPCB fails or CEA reg group 3 drops to the bottom of the core with the rest of reg group 3 at 120’, what would be required to be performed?

a manual reactor trip would be required to be performed

62
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at 100% with COLSS out of service and group 5 CEA slips to 150”, what is required?

enter LCO 3.2.4 DNBR is not met and enter condition B

63
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if a LOCA occurred 2.5 hours ago, what should be done?

place HPSI on long term injection to the hot leg

64
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U1 is doing a startup, Rx is critical below the POAH. if a .3 DPM startup rate is established, and no further action is taken, what will happen to RX power?

power will rise and stabilize above the POAH