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Tech Specs / TRM > Section 3.4 RCS > Flashcards

Section 3.4 RCS Flashcards

1
Q
  • LCO 3.4.1.3 RCS - Hot Shutdown*
    • *

What is required to restart a RCP with any RCS cold leg temperature ≤ 350 ˚F?

A

RCS/SG ∆T < 50 ˚F

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2
Q
  • LCO 3.4.9.3 COMS*
    • *

What are your ≤ 1 hr action(s) if ≥ 1 ECCS accumulators are not isolated while in MODES 4-5 or MODE 6 with the Rx Vessel Head on?

A
  • LCO 3.4.9.3 COMS*
  • Action A*
    • *
  • Isolate ECCS Accumulators [1 hr]
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3
Q
  • LCO 3.4.1.4.2 RCS Cold Shutdown - Loops Not Filled*
    • *

What are your ≤ 1 hr action(s) if 2 RHR trains are inoperable while in MODE 5 w/ RCS loops not filled?

A
  • LCO 3.4.1.4.2 RCS Cold Shutdown - Loops Not Filled*
  • Action A*
    • *

Initiate action to return required RHR trains to OPERABLE status [Immediately]

Note:
2 RHR trains may be inoperable for testing for 2 hrs provided remaining RHR train is OPERABLE

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4
Q
  • LCO 3.4.4 PZR Relief Valves*
    • *

What are your ≤ 1 hr action(s) if both PORV block valves are inoperable while in MODES 1-3?

A
  • LCO 3.4.4 PZR Relief Valves*
  • Action E*
    • *
  • Restore PORV blocks to OPERABLE [1 hr]

OR

  • Shut associated PORVs [1 hr]

AND

  • Restore 1 PORV block to OPERABLE [Following 1 hr]

OR

  • Apply CRMP [Following 1 hr]

OR

  • Be in MODE 3 [6 hrs]

AND

  • Be in MODE 4 [Following 6 hrs]
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5
Q
  • LCO 3.4.8 Specific Activity*
    • *

Why are only nuclides with greater than 15 minute half-lives considered in E-bar?

A

Difficult to identify short-lived radio-nuclides

Once FPP released during DBA, it takes 30 mins to get to site boundary

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6
Q
  • LCO 3.4.1.3 RCS Hot Shutdown*
    • *

What are your ≤ 1 hr action(s) if all RCS/RHR loops are inoperable in MODE 4?

A
  • LCO 3.4.1.3 RCS Hot Shutdown*
  • Action B*
    • *
  • Initiate action to restore required RCS/RHR loops [Immediately]

AND

  • Suspend operations that would dilute RCS < SDM [Immediately]
    • *

​Note:
All RCS/RHR loops may be secured for 1 hr provided:

  • Do not dilute RCS < SDM
  • RCS Temperature maintained ≥ 10 ˚F below saturation temperature
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7
Q
  • LCO 3.4.8 Specific Activity*
    • *

When is LCO 3.4.8 Specific Activity Applicable?

A

MODES 1-5

  • ≤ 1 µCi/g Dose equivalent I-131
  • ≤ 100/E µCi/g of gross activity
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8
Q
  • LCO 3.4.1.1 RCS S/U and Power Operation ​*
    • *

When is LCO 3.4.1.1 RCS S/U and Power Operation Applicable?

A

MODES 1-2

Bases:
DNBR concerns

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9
Q
  • LCO 3.4.1.4.1 RCS Cold S/D - Loops Filled*
    • *

What are your ≤ 1 hr action(s) if 2 RHR trains are inoperable AND ≥ 3 SGs have a NR Level of < 10% while in MODE 5 w/ RCS loops filled?

A
  • LCO 3.4.1.4.1 RCS Cold S/D - Loops Filled*
  • Action A*
    • *
  • Initiate action to restore required RHR trains [Immediately]

OR

  • Initiate action to restore required SG NR Water levels [Immediately]
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10
Q
  • LCO 3.4.9.1 RCS Pressure/Temperature Limits*
    • *

What are your ≤ 1 hr action(s) if any RCS heatup rate, cooldown rate, or hydrostatic rate of change is violated?

A
  • LCO 3.4.9.1 RCS Pressure/Temperature Limits*
  • Action A*
    • *
  • Restore Temperature/Pressure to within limits [30 mins]

AND

  • Perform engineering evaluation and determine if RCS integrity is still acceptable [6 hrs]

OR

  • Be in MODE 3 [6 hrs]

AND

  • Reduce to 200 ˚F and 500 psig [Following 30 hrs]
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11
Q
  • LCO 3.4.4 PZR Relief Valves*
    • *

When is LCO 3.4.4 PZR Relief Valves Applicable?

A

MODES 1-3

Manual operation is required for safety function.

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12
Q
  • LCO 3.4.5 S/G tube Integrity*
    • *

When is LCO 3.4.5 S/G tube Integrity Applicable?

A

MODES 1-4

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13
Q
  • LCO 3.4.2.2 PZR Safeties*
    • *

What are your ≤ 1 hr action(s) if one PZR safety valve is inoperable while in MODES 1-3?

A
  • LCO 3.4.2.2 PZR Safeties*
  • Action A*
    • *

Restore PZR Safety to OPERABLE [1 hr]

OR

Be in MODE 3 [6 hrs]

AND

Be in MODE 4 [Following 6 hrs]

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14
Q
  • LCO 3.4.4 PZR Relief Valves*
    • *

What are your ≤ 1 hr action(s) if ≥ 1 PZR PORV is inoperable due to seat leakage in MODES 1-3?

A
  • LCO 3.4.4 PZR Relief Valves*
  • Action A*
    • *
  • Restore PORV to OPERABLE [1 hr]

OR

  • Close PORV Block valve and maintain power on valve [1 hr]

OR

  • Be in MODE 3 [6 hrs]

AND

  • Be in MODE 4 [Following 6 hrs]
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15
Q
  • LCO 3.4.1.2 RCS Hot Standby*
    • *

What are your ≤ 1 hr action(s) if all Rx Coolant loops are inoperable while in MODE 3?

A
  • LCO 3.4.1.2 RCS Hot Standby*
  • Action C*
    • *
  • Initiate action to restore required RCS loops [Immediately]

AND

  • Suspend operations that would dilute RCS < SDM [Immediately]
    • *

​Note:
All RCS loops may be secured for 1 hr provided:

  • Do not dilute RCS < SDM
  • RCS Temperature maintained ≥ 10 ˚F below saturation temperature
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16
Q
  • LCO 3.4.1.4.1 RCS Cold S/D - Loops Filled*
    • *

What RCS/RHR loops should be OPERABLE while in MODE 5 w/ RCS loops filled?

A

1 RHR train w/ 125 gpm flowrate

AND

1 additional RHR Train
OR
2 SGs with NR Level > 10%

2 RHR trains may be inoperable for testing for 2 hrs provided remaining RHR train is OPERABLE

All RHR loops may be secured for 1 hr provided:

  • Do not dilute RCS < SDM
  • RCS Temperature maintained ≥ 10 ˚F below saturation temperature
17
Q
  • LCO 3.4.9.1 RCS Pressure/Temperature Limits*
    • *

When is LCO 3.4.9.1 RCS Pressure/Temperature Limits Applicable?

A

At All Times

18
Q
  • LCO 3.4.8 Specific Activity*
    • *

What must be done if thermal power changes 15% within 1 hr?

A

Sample of I-131, I-133, I-135 within 2 hrs - 6 hrs

19
Q
  • LCO 3.4.1.3 RCS Hot Shutdown*
    • *

What are your ≤ 1 hr action(s) if only RCS/RHR 1 loop is OPERABLE while in MODE 4?

A
  • LCO 3.4.1.3 RCS Hot Shutdown*
  • Action A*
    • *
  • Initiate action to restore required loops [Immediately]

AND

  • If remaining loop is RHR train: Be in MODE 5 [24 hrs]
20
Q
  • LCO 3.4.1.4.2 RCS Cold Shutdown - Loops Not Filled*
    • *

What are your ≤ 1 hr action(s) if all RHR trains are inoperable while in MODE 5 w/ RCS loops not filled?

A
  • LCO 3.4.1.4.2 RCS Cold Shutdown - Loops Not Filled*
  • Action B*
    • *
  • Suspend operations that would dilute RCS < SDM [Immediately]

AND

  • Initiate action to restore RHR trains [Immediately]
    • *

​Note:
All RHR loops may be secured for 1 hr provided:

  • Do not dilute RCS < SDM
  • RCS Temperature maintained ≥ 10 ˚F below saturation temperature
21
Q
  • LCO 3.4.4 PZR Relief Valves*
    • *

What are your ≤ 1 hr action(s) if one PZR PORV block valve is inoperable in MODES 1-3?

A
  • LCO 3.4.4 PZR Relief Valves*
  • Action D*
    • *
  • Restore PORV block to OPERABLE [1 hr]

OR

  • Shut associated PORV [1 hr]

AND

  • Restore PORV block to OPERABLE [72 hrs]

OR

  • Apply CRMP [72 hrs]

OR

  • Be in MODE 3 [6 hrs]

AND

  • Be in MODE 4 [Following 6 hrs]
22
Q
  • LCO 3.4.9.3 COMS*
    • *

What are your ≤ 1 hr action(s) if > 1 CCP is capable of injecting into the RCS while in MODES 4-5 or MODE 6 with the Rx Vessel Head on?

A
  • LCO 3.4.9.3 COMS*
  • Action B*
    • *
  • Initiate action to render all but 1 CCP incapable of injecting into RCS [Immediately]
23
Q
  • LCO 3.4.4 PZR Relief Valves*
    • *

What are your ≤ 1 hr action(s) if 1 PZR PORV is inoperable for reasons other than excessive seat leakage while in MODES 1-3?

A
  • LCO 3.4.4 PZR Relief Valves*
  • Action B*
    • *
  • Restore PORV to OPERABLE [1 hr]

OR

  • Close associated block valve and remove power [1 hr]

AND

  • Restore PORV to OPERABLE [72 hrs]

OR

  • Apply the CRMP [72 hrs]

OR

  • Be in MODE 3 [6 hrs]

AND

  • Be in MODE 4 [Following 6 hrs]
24
Q
  • LCO 3.4.6.2 Operational Leakage*
    • *

When is LCO 3.4.6.2 Operational Leakage Applicable?

25
Q
  • LCO 3.4.1.2 RCS Hot Standby*
    • *

At what SG water level is a SG considered OPERABLE?

A

10% Narrow Range

26
Q
  • LCO 3.4.6.2 Operational Leakage*
    • *

What are your leakage limits?

A

No Pressure Boundary Leakage

1 gpm unidentified

10 gpm identified

150 gpd through any 1 SG

0.5 gpm/in (Up to 5 gpm) at 2235 psig ± 20 psig
(HHSI/LHSI/RHR/Accumulator Valves)

27
Q
  • LCO 3.4.1.2 RCS Hot Standby*
    • *

What are your ≤ 1 hr action(s) if only 1 RCP loop is in operation and the Rx Trip breakers are shut?

A
  • LCO 3.4.1.2 RCS Hot Standby*
  • Action B*
    • *
  • Open Rx Trip Breakers [1 hr]
28
Q
  • LCO 3.4.1.4.1 RCS Cold S/D - Loops Filled*
    • *

What are your ≤ 1 hr action(s) if all RHR trains are inoperable while in MODE 5 w/ RCS loops filled?

A
  • LCO 3.4.1.4.1 RCS Cold S/D - Loops Filled*
  • Action B*
    • *
  • Suspend actions that would dilute RCS < SDM [Immediately]

AND

  • Initiate action to restore at least 1 RHR train [Immediately]
    • *

​Note:
All RHR trains may be secured for 1 hr provided:

  • Do not dilute RCS < SDM
  • RCS Temperature maintained ≥ 10 ˚F below saturation temperature
29
Q
  • LCO 3.4.9.3 COMS*
    • *

What are the administrative controls required during testing of inoperable PRZR PORV’s in MODES 4, 5, & 6 with the head on the reactor vessel?

A

Two RHR trains will be OPERABLE and in operation with the auto closure interlock bypassed to provide COMS.

30
Q
  • LCO 3.4.9.3 COMS*
    • *

When is LCO 3.4.9.3 COMS Applicable?

A

MODES 4-5

MODE 6 w/ Rx vessel head on

  • Need COMS OPERABLE
  • ≤ 1 CCP
  • ECCS Accumulators Isolated
    • Only required when Accumulator Pressure > RCS Pressure
  • Two PORVS OR ≥ 2” Hole in RCS
31
Q
  • LCO 3.4.1.4.2 RCS Cold Shutdown - Loops Not Filled*
    • *

What are your ≤ 1 hr action(s) if a valve or mechanical joint that is used to isolate a unborated water source is found open while in MODE 5 w/ RCS loops not filled?

A
  • LCO 3.4.1.4.2 RCS Cold Shutdown - Loops Not Filled*
  • Action C*
    • *
  • Suspend any operation that would dilute RCS < SDM [Immediately]

AND

  • Initiate Action to shut valve/mechanical joint [Immediately]

AND

  • Verify SDM [4 hrs] (Must be done if LCO entered)
    • *

Note:
Seperate entry condition allowed for each valve/mechanical joint.

32
Q
  • LCO 3.4.2.2 PZR Safeties*
    • *

When is LCO 3.4.2.2 PZR Safeties Applicable?

A

MODES 1-3

Lift setting must be 2485 psig +2%, -3%

  • Testing is ±1%
33
Q
  • LCO 3.4.1.3 RCS Hot Shutdown*
    • *

What is RHR flow limited to in MODE 4?

A

125 gpm

CV0198 pinned to control flowrate

34
Q
  • LCO 3.4.3 PZR*
    • *

When is LCO 3.4.3 PZR Applicable?

35
Q
  • LCO 3.4.6.1 Leakage Detection System*
    • *

When is LCO 3.4.6.1 Leakage Detection System Applicable?

A

MODES 1-4

LCO 3.0.3 can be entered if all leakage detection instrumentation lost.

36
Q
  • LCO 3.4.4 PZR Relief Valves*
    • *

What are your ≤ 1 hr action(s) if both PORVs are inoperable for reasons other than seat leakage in MODES 1-3?

A
  • LCO 3.4.4 PZR Relief Valves*
  • Action C*
    • *
  • Apply CRMP [1 hr]

OR

  • Restore PORV to OPERABLE [1 hr]

OR

  • Close PORV blocks and remove power [1 hr]

AND

  • Be in MODE 3 [6 hrs]

AND

  • Be in MODE 4 [Following 6 hrs]

Tech Specs / TRM (13 decks)

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