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LCO > 3.4 "Primary Coolant System" > Flashcards

3.4 "Primary Coolant System" Flashcards

1
Q

LCO 3.4.1 title

A

PCS Pressure, Temperature, and Flow Departure from Nucleate Boiling Limits

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2
Q

LCO 3.4.1 requirement

A

PCS DNB parameters for PZR pressure, cold leg temperature, and PCS total flow rate shall be w/in the limits specified in the COLR

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3
Q

LCO 3.4.1 applicability

A

Mode 1

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4
Q

LCO 3.4.1 required actions < 1 hour

A

NONE

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5
Q

LCO 3.4.2 title

A

PCS Minimum Temperature for Criticality

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6
Q

LCO 3.4.2 requirement

A

Each PCS loop average temperature shall be >= 525 F

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7
Q

LCO 3.4 2 applicability

A
  • Mode 1

- Mode 2 with Keff >= 1.0

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8
Q

LCO 3.4.2 required actions < 1 hour

A

Tave in 1 or more PCS loops not w/in limits, then be in Mode 2 with Keff < 1.0 w/in 30 minutes

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9
Q

LCO 3.4.3 title

A

PCS Pressure and Temperature Limits

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10
Q

LCO 3.4.3 requirement

A

PCS pressure, temperature, and heatu/cooldown rates shall be maintained w/in the limits of Figure 3.4.3-1 and 3.4.3-2

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11
Q

LCO 3.4.3 applicability

A

At all times

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12
Q

LCO 3.4.3 required actions < 1 hour

A
  • Requirements of LCO not met in Modes 1-4, then restore parameter(s) to w/in limits in 30 minutes
  • Requirements of LCO not met any time in other than Modes 1-4, then initiate action to restore parameter(s) to w/in limits immediately
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13
Q

LCO 3.4.4 title

A

PCS Loops - Modes 1 and 2

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14
Q

LCO 3.4.4 requirement

A

2 PCS loops shall be operable and in operation

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15
Q

LCO 3.4.4 applicability

A

Modes 1 and 2

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16
Q

LCO 3.4.4 required actions < 1 hour

A

NONE

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17
Q

LCO 3.4.5 title

A

PCS Loops - Mode 3

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18
Q

LCO 3.4.5 requirement

A
  • 2 PCS loops shall be operable and 1 PCS loop shall be in operation
  • All PCPs may not be in operation for <= 1 hour per 8 hour period provided no operations are permitted that would cause reduction of PCS boron concentration AND core outlet temperature is maintained at least 10 F below saturation temperature
  • Forced Circ (starting the 1st PCP) shall not be initiated unless PCS Tc is > 430 F, S/G secondary temperature is <= reactor inlet temperature (Tc), S/G secondary temperature is < 100 F above Tc and SDC is isolated from the PCS and PCS heatup/cooldown rate is <= 10 F/hour, OR S/G secondary temperature is < 100 F above Tc and SDC is isolated from the PCS and PZR level is <= 57%
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19
Q

LCO 3.4.5 applicability

A

Mode 3

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20
Q

LCO 3.4.5 required actions < 1 hour

A

No PCS loop operable OR no PCS loop in operation, then suspend all operations involving a reduction of PCS boron concentration AND initiate action to restore 1 PCS loop to operable and in operation immediately

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21
Q

LCO 3.4.6 title

A

PCS Loops - Mode 4

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22
Q

LCO 3.4.6 requirement

A
  • 2 loops or trains consisting of any combo of PCS loops and SDC trains shall be operable, and either 1 PCS loop shall be in operation or 1 SDC train shall be in operation with >= 2810 gpm flow through the reactor core
  • All PCPs may not be in operation for <= 1 hour per 8 hour period provided no operations are permitted that would cause reduction of PCS boron concentration AND core outlet temperature is maintained at least 10 F below saturation temperature
  • Forced Circ (starting the 1st PCP) shall not be initiated unless S/G secondary temperature is <= reactor inlet temperature (Tc), S/G secondary temperature is < 100 F above Tc and SDC is isolated from the PCS and PCS heatup/cooldown rate is <= 10 F/hour, OR S/G secondary temperature is < 100 F above Tc and SDC is isolated from the PCS and PZR level is <= 57%
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23
Q

LCO 3.4.6 applicability

A

Mode 4

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24
Q

LCO 3.4.6 required actions < 1 hour

A
  • 1 PCS loop inoperable AND 2 SDC trains inoperable, then initiate action to restore a 2nd PCS loop or 1 SDC train to operable immediately
  • No PCS loops or SDC trains operable OR no PCS loop in operation w/SDC flow through the reactor core not w/in limits, then suspend all operations involving reduction of PCS boron concentration AND initiate action to restore 1 PCS loop to operable and in operation OR initiate action to restore 1 SDC train to operable and >= 2810 gpm flow through the reactor core immediately
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25
Q

LCO 3.4.7 title

A

PCS Loops - Mode 5, Loops Filled

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26
Q

LCO 3.4.7 requirement

A
  • 1 SDC train shall be operable and in operation w/>= 2810 gpm flow through the reactor core and either 1 additional SDC train shall be operable, or secondary side water level of each S/G shall be >= -84%
  • All PCPs may not be in operation for <= 1 hour per 8 hour period provided no operations are permitted that would cause reduction of PCS boron concentration AND core outlet temperature is maintained at least 10 F below saturation temperature
  • Both SDC trains may be inoperable for up to 2 hours for surveillance testing or maintenance, provided 1 SDC train is providing the required flow through the core, core outlet temperature is maintained at least 10 F below saturation temperature, AND each S/G secondary side water level is >= 84%
  • Forced Circ (starting the 1st PCP) shall not be initiated unless S/G secondary temperature is <= reactor inlet temperature (Tc), S/G secondary temperature is < 100 F above Tc and SDC is isolated from the PCS and PCS heatup/cooldown rate is <= 10 F/hour, OR S/G secondary temperature is < 100 F above Tc and SDC is isolated from the PCS and PZR level is <= 57%
  • PCPs P-50A and P-50B shall not be operated simultaneously
  • All SDC trains may not be in operation during planned heatup to Mode 4 when at least 1 PCS loop is in operation
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27
Q

LCO 3.4.7 applicability

A

Mode 5 with loops filled

28
Q

LCO 3.4.7 required actions < 1 hour

A

1 SDC train inoperable AND any S/G with secondary side water level not w/in limit, then initiate action to restore a second SDC train to operable OR initiate action to restore S/G secondary side water levels to w/in limits immediately
-2 SDC trains inoperable OR SDC flow through the core not w/in limits, then suspend all operations involving a reduction in PCS boron concentration AND initiate action to restore 1 SDC train to operable and in operation with >= 2810 gpm flow through the core

29
Q

LCO 3.4.8 title

A

PCS Loops - Mode 5, Loops Not Filled

30
Q

LCO 3.4.8 requirement

A
  • 2 SDC trains shall be operable and either 1 SDC train in operation with >= 2810 gpm through the core OR 1 SDC train in operation with >= 650 gpm through the core w/2 of 3 charging pumps incapable of reducing boron concentration in the PCS below minimum value necessary to maintain the required SDM
  • All SDC pumps may not be in operation for <= 1 hour provided no operations are permitted that would cause a reduction of the PCS boron concentration, core outlet temperature maintained > 10 F below saturation temperature, AND no draining operations to further reduce PCS water volume are permitted
  • 1 SDC train may be inoperable for <= 2 hours for surveillance testing provided the other SDC train is operable and in operation
31
Q

LCO 3.4.8 applicability

A

Mode 5 with loops not filled

32
Q

LCO 3.4.8 required actions < 1 hour

A
  • 1 SDC train inoperable, then initiate actions to restore SDC train to operable immediately
  • 2 SDC trains inoperable OR SDC flow through the core not w/in limits, then suspend all operations involving reduction of PCS boron concentration, AND initiate action to restore 1 SDC train to operable and in operation with SDC flow through the core w/in limit
33
Q

LCO 3.4.9 title

A

Pressurizer

34
Q

LCO 3.4.9 requirement

A

The PZR shall be operable with:

  • level < 62.8% (N/A in Mode 3 until after a bubble has been established and water level has been lowered to w/in its normal operating band)
  • > = 375 kW of heater capacity available from D bus
  • > = 375 kW of heater capacity available from E bus with the capability of being powered from an emergency power supply
35
Q

LCO 3.4.9 applicability

A

Modes 1-3

36
Q

LCO 3.4.9 required actions < 1 hour

A

NONE

37
Q

LCO 3.4.10 title

A

PZR Safety Valves

38
Q

LCO 3.4.10 requirement

A

3 PZR safety valves shall be operable w/lift settings as specified in Table 3.4.10-1 (2580 psia for RV-1039, 2540 for 1040, and 2500 for 1041)

39
Q

LCO 3.4.10 applicability

A
  • Modes 1 and 2

- Mode 3 with all PCS cold leg temperatures >= 430 F

40
Q

LCO 3.4.10 required actions < 1 hour

A

1 PZR safety valve inoperable, then restore valve to operable w/in 15 minutes

41
Q

LCO 3.4.11 title

A

PZR Power Operated Relief Valves

42
Q

LCO 3.4.11 requirement

A
  • Each PORV and associated block valve shall be operable

- Separate Condition entry is allowed for each PORV

43
Q

LCO 3.4.11 required actions < 1 hour

A
  • 1 PORV inoperable, then close associated block valve w/in 1 hour
  • 1 block valve inoperable, then place associated PORV in manual control w/in 1 hour
  • 2 PORVs inoperable, then close associated block valves w/in 1 hour
  • 2 block valves inoperable, then place associated PORVs in manual control w/in 1 hour
44
Q

LCO 3.4.12 title

A

Low Temperature Overpressure Protection System

45
Q

LCO 3.4.12 requirement

A

-An LTOP System shall be operable with:
1. both HPSI pumps incapable of injecting into the PCS (only required when any PCS cold leg temperature < 300 F. also doesn’t prohibit the use of HPSI pumps for emergency addition of makeup to the PCS)
AND
2. either 2 PORVs with lift settings as specified in Figure 3.4.12-1 OR PCS is depressurized and a PCS vent capable of relieving >= 167 gpm at 315 psia

46
Q

LCO 3.4.12 applicability

A
  • Mode 3 when any PCS cold leg temperature < 430 F
  • Modes 4 and 5
  • Mode 6 when the reactor vessel head is on
47
Q

LCO 3.4.12 required actions < 1 hour

A

1 or 2 HPSI pumps capable of injecting into the PCS, then initiate action to verify no HPSI pump is capable of injecting into the PCS immediately

48
Q

LCO 3.4.13 title

A

PCS Operational Leakage

49
Q

LCO 3.4.13 requirement

A

PCS operational leakage shall be limited to:

  • no pressure boundary leakage
  • 1 gpm unidentified leakage
  • 10 gpm indentified leakage
  • 150 gpd primary to secondary leakage through any 1 S/G
50
Q

LCO 3.4.13 applicability

A

Modes 1-4

51
Q

LCO 3.4.13 required actions < 1 hour

A

NONE

52
Q

LCO 3.4.14 title

A

PCS Pressure Isolation Valve Leakage

53
Q

LCO 3.4.14 requirement

A
  • Leakage from each PCS PIV shall be w/in limits and both SDC suction valve interlocks shall be operable
  • Separate Condition entry is allowed for each flow path
  • Enter applicable conditions and required actions for systems made inoperable by an inoperable PIV
54
Q

LCO 3.4.14 applicability

A
  • Modes 1-3

- Mode 4, except during the SDC mode of operation, or transition to or from the SDC mode of operation

55
Q

LCO 3.4.14 required actions < 1 hour

A

NONE

56
Q

LCO 3.4.15 title

A

PCS Leakage Detection Instrumentation

57
Q

LCO 3.4.15 requirement

A

3 of the following PCS leakage detection instrumentation channels shall be operable:

  • 1 CTMT sump level indicating channel
  • 1 CTMT atmosphere gaseous activity monitoring channel
  • 1 CAC condensate level switch channel
  • 1 CTMT atmosphere humidity monitoring channel
58
Q

LCO 3.4.15 applicability

A

Modes 1-4

59
Q

LCO 3.4.15 required actions < 1 hour

A

All required channels inoperable, then enter LCO 3.0.3 immediately

60
Q

LCO 3.4.16 title

A

PCS Specific Activity

61
Q

LCO 3.4.16 requirement

A

PCS specific activity shall be w/in limits

62
Q

LCO 3.4.16 applicability

A
  • Modes 1 and 2

- Mode 3 with Tave >= 500 F

63
Q

LCO 3.4.16 required actions < 1 hour

A

NONE

64
Q

LCO 3.4.17 title

A

Steam Generator Tube Integrity

65
Q

LCO 3.4.17 requirement

A
  • S/G tube integrity shall be maintained AND all S/G tubes satisfying the tube repair criteria shall be plugged in accordance with the S/G Program
  • Separate Condition entry is allowed for each S/G tube
66
Q

LCO 3.4.17 applicability

A

Modes 1-4

67
Q

LCO 3.4.17 required actions < 1 hour

A

NONE

LCO (9 decks)

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