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ILO24 > LCOs 1 - Blind > Flashcards

LCOs 1 - Blind Flashcards

3.1 - 3.5

1
Q

3.1 Reactivity Control Systems

3.1.1

**1 Hour Actions Associated

A

Shutdown Margin

LCO
SDM Shall be:

a. ≥ 0.38% dk/k, with the highest worth control rod analytically determined; or

b. ≥ 0.28% dk/k, with the highest worth control rod determined by test.

Applicability
Modes 1, 2, 3, 4, & 5

1 Hour Actions
Not within limits Mode 3: Initiate action to fully insert all insertable control rods immediately.

Not within limits Mode 4: Initiate action to fully insert all insertable control rods immediately, suspend core alts, and initiate action to restore all containment related operabilities.

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2
Q

3.1 Reactivity Control Systems

3.1.2

A

Reactivity Anamolies

LCO
The Reactivity difference between the monitored rod density and the predicted rod density shall be within ± 1% dk/k.

Applicability
Modes 1, 2

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3
Q

3.1Reactivity Control Systems

3.1.3

**1 Hour Actions Associated

A

Control Rod Operability

LCO
Each control rod shall be operable.

Applicability
Modes 1, 2

1 Hour actions:
1 stuck contorl rod - Verity stuck control rod separation criteria met.

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4
Q

3.1Reactivity Control Systems

3.1.4

A

Control Rod Scram Times

LCO
A. No more than 13 operable control rods shall be “slow,” in accordance with Table 3.1.4-1; and

B. No operable control rod that is “slow” shall occupy a location adjacent to another operable control rod that is “slow” or a withdrawn control rod that is stuck.

Applicability
Modes 1 & 2

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5
Q

3.1Reactivity Control Systems

3.1.5

1 Hour Associated Actions

A

Control Rod Scram Accumulators

LCO
Each control rod scram accumulator shall be operable.

Applicability
Modes 1, 2.

1 Hour Actions
Two or more accumulators inoperable with steam dome pressure ≥ 600 psig - Restore charing water header pressure to ≥ 1520 psig within 20 minutes AND either declare associated control rod slow (as long as it wasn’t slow in its last surveillence) or declare associated control rod inoperable within 1 hour.

One or more accumulator inoperable with steam done pressure < 600 psig - Verify all contorl rods associated with inoperable accumulators are fully inserted immediately upon discovery of charging water header pressure < 1520 psig, AND declare the associated control rod inoperable within 1 hour.

If any rods associated with inoperable accumulator are not fully inserted and actions can not be complete, immediately place the mode switch in shutdown.

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6
Q

3.1Reactivity Control Systems

3.1.6

**1 Hour Associated Actions

A

Control Rod Pattern

LCO
Operable control rods shall comply with the requirements of the BPWS.

Applicability
Modes 1 & 2 with thermal power ≤ 19% RTP.

1 Hour Actions
Nine or more operable control rods not in compliance with BPWS - Immediately suspend control rod withdrawal and place mode switch in S/D within 1 hour.

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7
Q

3.1Reactivity Control Systems

3.1.7

A

SLC System

LCO
Two SLC subsystems shall be operable.

Applicability
Modes 1, 2.

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8
Q

3.1Reactivity Control Systems

3.1.8

A

SDV Vent and Drain Valves

LCO
Each SDV vent and drain valve shall be operable.

Applicability
Modes 1, 2.

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9
Q

3.2 Power Distribution Limits

3.2.1

A

APLHGR

LCO
All APLHGRs shall be ≤ limits specified in COLR.

Applicability
Thermal Power ≥ 23.8% RTP.

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10
Q

3.2 Power Distribution Limits

3.2.2

A

MCPR

LCO
All MCPRs shall be ≥ limits specified in COLR.

Applicability
Thermal Power ≥ 23.8% RTP.

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11
Q

3.2 Power Distribution Limits

3.2.3

A

LHGR

LCO
All LHGRs shall be ≤ limits specified in COLR.

Applicability
Thermal Power ≥ 23.8% RTP.

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12
Q

3.3 Instrumentation

3.3.1.1

NI/Scram Subsection

1 Hour Actions Associated

A

RPS Instrumentation

LCO
RPS Instrumentation for each Function in table 3.3.1.1-1 shall be operable.

Applicability
IAW Table 3.3.1.1-1

1 Hour Actions
Loss of RPS trip function capability - Restore trip capability within 1 hour.

Any condition action no complete - Initiate action to fully insert all insertable control rods in cells containing one or more fuel assemblies.

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13
Q

3.3 Instrumentation

3.3.1.2

NI/Scram Subsection

1 Hour Associated Actions

A

SRM Instrumentation

LCO
The SRM instrumentation in table 3.3.1.2-1 shall be operable.

Applicability
According to table 3.3.1.2-1

1 Hour Actions
Three or more required SRMs inoperable in Mode 2 below IRM R2 - Immediately suspend control rod withdrawal.

One or more required SRMs inoperable in mode 3 or 4 - Insert all insertable control rods and place mode switch in S/D within 1 hour.

One or more required SRMs inoperable in mode 5 - Suspend core alts except for control rod insertion and insert all insertable control rods in cells containing one or more fuel assemblies immediately.

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14
Q

3.3 Instrumentation

3.3.1.3

NI/Scram Subsection

A

OPRM Instrumentation

LCO
Four channels of the OPRM period based algorithm instrumentation shall be operable.

Applicability
Thermal power ≥ 23.8% RTP.

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15
Q

3.3 Instrumentation

3.3.2.1

1 Hour Actions Associated

A

Control Rod Block Instrumentation

LCO
The Control Rod Block instrumentation for each Function in table 3.3.2.1-1 shall be operable.

Applicability
According to table 3.3.2.1-1

One or more RWL inoperable - Suspend control rod withdrawal immediately.

One or more RPC channels inoperable - Suspend control rod movement except by scram immediately.

One or more Mode Switch Position Monitor inoperable - Suspend control rod withdrawal and initiate action to insert alll insertable control rods immediately.

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16
Q

3.3 Instrumentation

3.3.3.1

Shit hit the fan systems

A

Post Accident Monitoring Instrumentation

LCO
The PAM instrumentation for each Function in table 3.3.3.1-1 shall be operable.

Applicability
Modes 1 & 2

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17
Q

3.3 Instrumenation

3.3.3.2

Shit hit the fan systems

A

Remote Shutdown System

LCO
The RSD system Functions shall be operable.

Applicability
Modes 1 & 2

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18
Q

3.3 Instrumentation

3.3.4.1

Pump Trip Systems

A

EOC RPT

LCO
Two channels per trip system for each EOC-RPT instrumentation function listed below shall be operable:

a. TSV Closure; and
b. TCV Fast Closure, Trip Oil Pressure Low

Applicability
Thermal Power ≥ 38% RTP with any recirc pump in fast speed.

19
Q

3.3 Instrumentation

3.3.4.2

Pump Trip Systems

1 Hour Actions Associated

A

ATWS RPT

LCO
Two channels per trip system for each ATWS-RPT instrumentation listed below shall be operable:

a. Reactor Vessel Water Level - Low Low, L2; and
b. Reactor Vessel Pressure High

Applicability
Mode 1

1 Hour Actions
Both ATWS-RPT function trip capabilities not maintained - Restore trip capability to one function within 1 hour.

20
Q

3.3 Instrumentation

3.3.5.1

Safety System Sub-section

A

ECCS Instrumentation

LCO
The ECCS instrumentation for each Function in Table 3.3.5.1-1 shall be operable.

Applicability
According to table 3.3.5.1-1

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21
Q

3.3 Instrumentation

3.3.5.2

Safety System Sub-section

A

RPV Water Inventory Control Instrumentation

LCO
RPV Water Inventory Control instrumentation for each Function in table 3.3.5.2-1 shall be operable.

Applicability
According to Table 3.3.5.2-1

22
Q

3.3 Instrumentation

3.3.5.3

Safety System Sub-section

A

RCIC System Instrumentation

LCO
The RCIC system instrumentation for each Function in table 3.3.5.3-1 shall be operable.

Applicability
Mode 1
Modes 2 & 3 with reactor steam dome pressure > 150 PSIG.

23
Q

3.3 Instrumentation

3.3.6.1

Containment Safety Sub-section

A

Primary Containment & Drywell Isolation Instrumentation

LCO
The primary containment and drywell isolation instrumentation for each Function in table 3.3.6.1-1 shall be operable.

Applicability
According to table 3.3.6.1-1

24
Q

3.3 Instrumentation

3.3.6.2

Containment Safety Sub-section

A

RHR Containment Spray System Instrumentation

LCO
The RHR Containment spray system instrumentation for each Function in table 3.3.6.2-1 shall be operable.

Applicability
Modes 1, 2, & 3.

25
Q

3.3 Instrumentation

3.3.6.3

Containment Safety Sub-section

A

SPMU Instrumentation

LCO
SPMU system instrumentation for each Function in table 3.3.6.3-1 shall be operable.

Applicability
Modes 1, 2, & 3.

26
Q

3.3 Instrumentation

3.3.6.4

Containment Safety Sub-section

A

Relief and LLS Instrumentation

LCO
Two relief & the LLS instrumentation trip systems shall be operable.

Applicability
Modes 1, 2, & 3.

27
Q

3.3 Instrumentation

3.3.7.1

A

Control Room Emergency Recirc System Instrumentation

LCO
The CRER system instrumentation for each Function in table 3.3.7.1-1 shall be operable.

Applicability
According to table 3.3.7.1-1

28
Q

3.3 Instrumentation

3.3.8.1

Electrical Sub-section

A

Loss of Power Instrumentation

LCO
The LOP instrumentation for each Function in table 3.3.8.1-1 shall be operable.

Applicability
Modes 1, 2, & 3.

29
Q

3.3 Instrumentation

3.3.8.2

Electrical Sub-section

A

RPS EPM

LCO
Two RPS electric power monitoring assemblies shall be operable for each inservice RPS motor generator set or alternate power supply.

Applicability
Modes 1, 2, & 3.
Modes 4 & 5 with any control rod withdrawn from a core cell containing one or more fuel assemblies.
Modes 4 & 5 with RHR SDC system not isolated.

30
Q

3.4 RCS

3.4.1

A

Recirc Loops Operating

LCO
Either:
a. Two recirculation loops shall be in operation with matched flows:
OR
b. One recirculation loop shall be in operation with:
Thermal Power ≤ 2500 MWt
AND
MCPR & LHGR limits modified for single loop operation IAW COLR
AND
RPS Flow Biased Thermal Power High reset for single loop operation.

Applicability
Modes 1, 2

31
Q

3.4 RCS

3.4.2

A

FCVs

LCO
A recirc loop FCV shall be operable in each operating recirc loop.

Applicability
Modes 1 & 2.

32
Q

3.4 RCS

3.4.3

A

Jet Pumps

LCO
All jet pumps shall be operable

Applicability
Modes 1 & 2.

33
Q

3.4 RCS

3.4.4

A

SRVs

LCO
Safety function of 7 SRVs shall be operable & relief function of 6 additional SRVs shall be operable.

Applicability
Modes 1, 2, & 3.

34
Q

3.4 RCS

3.4.5

A

RCS Operational Leakage

LCO
RCS operational leakage shall be limited to:
1. No pressure boundary leakage
2. ≤ 5 gpm unidentified leakage
3. ≤ 30 gpm total leakage AVERAGED over the previous 24 hour period
4. ≤ 2 gpm increase in unidentified leakage within the previous 24 hour period IN MODE 1

Applicability
Modes 1, 2, & 3.

35
Q

3.4 RCS

3.4.6

A

RCS Pressure Isolation Valve Leakage

LCO
The leakage from each RCS PIV shall be within limit.

Applicability
Modes 1 & 2.
Mode 3, except valves in the RHR SDC flow path when in, or during the transition to or from, the SDC mode of operation.

36
Q

3.4 RCS

3.4.7

A

RCS Leakage Detection Instrumentation

LCO
The following RCS leakage detection instrumentation shall be operable:
a. Drywell floor drain sump monitoring system;
b. One channel of either drywell atmospheric particulate monitoring system or drywell atmospheric gaseous monitoring system; and
c. Upper drywell air cooler condensate flow rate monitoring system.

Applicability
Modes1, 2, & 3

37
Q

3.4 RCS

3.4.8

A

RCS Specific Activity

LCO
The Dose equivalent I-131 specific activity of the reactor coolant shall be ≤ 0.2 µCi/gm.

Applicability
Mode 1
Modes 2 & 3 with any MSL not isolated.

38
Q

3.4 RCS

3.4.9

A

RHR SDC - Hot Shutdown

LCO
Two RHR SDC subsystems shall be operable, and, with no recirc pump in operation, at least one RHR SDC subsystem shall be in operation.
Note
Both RHR SDC subsystems and recirc pumps may be removed from operation for up to 2 hours per 8 hour period.
Note
One RHR SDC subsystem may be inoperable for up to 2 hours for performance of Surveillances.

Applicability
Mode 3 with Rx steam dome pressure less than the RHR cut in permissive.

39
Q

3.4 RCS

3.4.10

A

RHR SDC - Cold Shutdown

LCO
Two RHR SDC subsystems shall be operable, and, with no recirc pump in operation, at least one RHR SDC subsystem shall be in operation.
Note
Both RHR SDC subsystems & recirc pumps may be removed from operation for up to 2 hours per 8 hour period.
Note
One RHR SDC subsystem may be inoperable for up to 2 hours for the performance of Surveillances.
Note
Both RHR SDC subsystems & recirc pumps may be removed from operation during inservice leak and hydrostatic testing.

Applicability
Mode 4 when heat losses to the ambient are not sufficient to maintain average reactor coolant temperature ≤ 200F

40
Q

3.4 RCS

3.4.11

A

RCS P/T Limits (Brittle Fracture)

LCO
RCS Pressure, Temperature, HUR, CDR, & Recirc loop temperature requirements shall be maintained within limits.

Applicability
AT ALL TIMES

41
Q

3.4 RCS

3.4.12

A

Reactor Steam Dome Pressure

LCO
The reactor steam dome pressure shall be ≤ 1045 psig.

Applicability
Modes 1 & 2.

42
Q

3.5 ECCS

3.5.1

A

ECCS Operating

LCO
Each ECCS injection/spray subsystem and the ADS function of 8 SRVs shall be operable.

Applicability
Mode 1
Modes 2 & 3, except ADS valves are not required to be operable with reactor steam dome pressure ≤ 150 psig.

43
Q

3.5 ECCS

3.5.2

A

RPV Water Inventory Control

LCO
Drain Time of RPV water inventory to the TAF shall be ≥ 36 hours.
AND
One ECCS injection/spray subsystem shall be operable.
Note
A LPCI subsystem may be considered operable during alignment and operation for DHR, if capable of being manually realigned and not otherwise inoperable.

Applicability
Modes 4 & 5

44
Q

3.5 ECCS

3.5.3

A

RCIC

LCO
The RCIC system shall be operable.

Applicability
Mode 1
Modes 2 & 3 with reactor steam dome pressure > 150 psig.

ILO24 (17 decks)

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