U.S. EPR FINAL SAFETY ANALYSIS REPORT · 2013-09-24 · U.S. EPR FINAL SAFETY ANALYSIS REPORT Tier...

U.S. EPR FINAL SAFETY ANALYSIS REPORT

Figure 7.3-2—SIS Actuation

PZRPRESS NR

[1]

HOTLEG1PRESS

WR

HOTLEG1TEMP WR

HOTLEG1LOOP

LEVEL

Calculation of Psat

+ -

Delta Psat

(Figure 7.2-31) Permissive

P12 validated

& &

OR

PZRPRESS NR

[2]

HOTLEG2PRESS

WR

HOTLEG2TEMP WR

HOTLEG2LOOPLEVEL

Division 1 Division 2

min minmin

Same as Division 1

Same as Division 1

2 out of 4

(4)

2 out of 4

(4)

(4) (4) (4)

2 out of 4

(4)

(Figure 7.2-34)Permissive

P15 validated

&

Min 3p Min 1p Min 1p

RS

SIS Actuation

2 out of 4 2 out of 4

ManualSIS Train 1

Reset

A R

(4) (4)

(4) (4)

HOTLEG3PRESS

WR

HOTLEG3TEMP WR

HOTLEG3LOOPLEVEL

Division 3

Same as Division 1

Same as Division 1

(4) (4) (4)(4) (4)

HOTLEG4PRESS

WR

HOTLEG4TEMP WR

HOTLEG4LOOPLEVEL

Division 4

Same as Division 1

Same as Division 1

(4) (4) (4)(4) (4)

PZRPRESS NR

[3]

PZRPRESS NR

[4]

Manual SIS-Loop Level

Bypass

A R

ManualSIS

Actuation

A R

SIS Actuation SIS Actuation SIS Actuation

EPR3290 T2

Tier 2 Revision 5 Page 7.3-64


Figure 7.3-3—EFWS Actuation

2 out of 42 out of 4

min

Min2p

min

Min2p

min

Min2p

min

Min2p

OR


P13 validated

&&

RT - EFWS actuation � Low

SG Level

EFWS1 actuation

Division 1

OR

& &&&


P13 validated

OR

& & &

OR

& &

Division 2 Division 3 Division 4

2 out of 4

(4)

2 out of 4

(4)

2 out of 4

(4) (4)

2 out of 4

(4)

2 out of 4

(4)

2 out of 4

(4)

2 out of 4

(4)

2 out of 4

(4)

2 out of 4

(4) (4)

2 out of 4

(4)

2 out of 4

(4)

2 out of 4

(4)

2 out of 4

(4)

2 out of 4

(4)

EFWS2 actuation

EFWS3 actuation

EFWS4 actuation

EFWS1 actuation

EFWS2 actuation

EFWS3 actuation


P13 validated


P13 validated

EFWS4 actuation

(Figure 7.3-2)SIS actuation

(Figure 7.3-23)LOOP

&

OR

&

OR OR OR

&

&

OR OR OR

&

OR




(Figure 7.3-23)LOOP

(Figure 7.3-23)LOOP

(Figure 7.3-23)LOOP


SG Level


SG Level


SG Level

REV 003EPR3295 T2

SG1 LEVEL WR [1]

SG1 PRESS

[1]

Pressure Correction

SG2 LEVEL WR [1]

SG2 PRESS

[1]

Pressure Correction

SG3 LEVEL WR [1]

SG3PRESS

[1]

Pressure Correction

SG4 LEVEL WR [1]

SG4 PRESS

[1]

Pressure Correction

Same as Division 1 Same as Division 1 Same as Division 1

SG1 LEVEL WR [2]

SG1 PRESS

[2]

SG2 LEVEL WR [2]

SG2 PRESS

[2]

SG3 LEVEL WR [2]

SG3PRESS

[2]

SG4 LEVEL WR [2]

SG4 PRESS

[2]

SG1 LEVEL WR [3]

SG1 PRESS

[3]

SG2 LEVEL WR [3]

SG2 PRESS

[3]

SG3 LEVEL WR [3]

SG3PRESS

[3]

SG4 LEVEL WR [3]

SG4 PRESS

[3]

SG1 LEVEL WR [4]

SG1 PRESS

[4]

SG2 LEVEL WR [4]

SG2 PRESS

[4]

SG3 LEVEL WR [4]

SG3PRESS

[4]

SG4 LEVEL WR [4]

SG4 PRESS

[4]



Figure 7.3-4—EFWS SG Level Control and Pump Flow Protection

PI

OpenClose

EFW Pump 1 Discharge Flow

EFWS1 FCV

OpenClose

&

OR

&

min

-

Setpoint

PI

OpenClose

Setpoint

&&

EFWS1 LCV

OpenClose

-

SG 1 LEVEL WR

[1]

Division 1Same for Divisions 2, 3, and 4 controlling Trains 2, 3, and 4, respectively

EFWS SG Level Control EFWS Pump Flow Protection

RS

(Figure 7.3-6)Enable SASLevel Control

(Figure 7.3-6)Disable SASLevel Control

REV 004EPR3300 T2



Figure 7.3-5—EFWS Isolation

Division 1 Division 2 Division 3 Division 4

&

2 out of 4

(4)

(4)

maxMax1p

maxMax1p

maxMax1p

maxMax1p

(4) (4)

EFWS1 isolation


P13 validated

EFWS3 isolation

EFWS2 isolation

EFWS4 isolation


REV 003EPR3305 T2

SG1 LEVEL WR [1]

SG1 PRESS

[1]

Pressure Correction

SG2 LEVEL WR [1]

SG2 PRESS

[1]

Pressure Correction

SG3 LEVEL WR [1]

SG3PRESS

[1]

Pressure Correction

SG4 LEVEL WR [1]

SG4 PRESS

[1]

Pressure Correction

Same as Division 1

SG1 LEVEL WR [2]

SG1 PRESS

[2]

SG2 LEVEL WR [2]

SG2 PRESS

[2]

SG3 LEVEL WR [2]

SG3PRESS

[2]

SG4 LEVEL WR [2]

SG4 PRESS

[2]

Same as Division 1

SG1 LEVEL WR [3]

SG1 PRESS

[3]

SG2 LEVEL WR [3]

SG2 PRESS

[3]

SG3 LEVEL WR [3]

SG3PRESS

[3]

SG4 LEVEL WR [3]

SG4 PRESS

[3]

Same as Division 1

SG1 LEVEL WR [4]

SG1 PRESS

[4]

SG2 LEVEL WR [4]

SG2 PRESS

[4]

SG3 LEVEL WR [4]

SG3PRESS

[4]

SG4 LEVEL WR [4]

SG4 PRESS

[4]



Figure 7.3-6—EFWS Actuators (Div. 1&2)

Division 1


P13 validated

(Figure 7.3-5)EFWS1 isolation

(Figure 7.3-25)SG1

isolation

Start EFW1 pumpOpen EFW1 C-VOpen EFW1 I-V

Close EFW1 I-VClose EFW1 C-V

OROR

Close SG1 cold blwdn I-VClose SG1 hot blwdn I-V

(Figure 7.3-3)EFW1

actuation

RS RS

OR

OR

&

OR &

OR

Division 2


P13 validated


(Figure 7.3-25)SG2

isolation



OROR


(Figure 7.3-3)EFW2

actuation

RS RS

OR

OR

&

OR &

RS

OR

(Figure 7.3-3)EFW3

actuation

RS RS

OR

&

OR

OR

Close SG3 common blwdn I-V

(Figure 7.3-3)EFW4

actuation

RS RS

OR

&

OR

OR


(Figure 7.3-25)SG3

isolation

(Figure 7.3-25)SG4

isolationS R(Figure 7.3-14)

Main Steam Isolation Div. 1

(Figure 7.3-14)Main Steam

Isolation Div. 2


Isolation Div. 2

ManualEFWS 1Actuation

A R


A R

OR OR OR

OR

ManualEFWS 1Isolation

A R


A R


A R


A R


A R

ManualEFWS 2 Isolation

A R


A R


A R

REV 003EPR3310 T2

Enable SAS Level Control

Disable SAS Level Control





Figure 7.3-7—EFWS Actuators (Div. 3&4)

Division 4


P13 validated


(Figure 7.3-25)SG4

isolation



OROR


(Figure 7.3-3)EFW4

actuation

RS RS

OR

OR

&

OR &

RS

OR

Division 3


P13 validated


(Figure 7.3-25)SG3

isolation



OROR


(Figure 7.3-3)EFW3

actuation

RS RS

OR

OR

&

OR &

RS

OR

(Figure 7.3-3)EFW1

actuation

RS RS

OR

&

OR

(Figure 7.3-25)SG1

isolation

OR


(Figure 7.3-3)EFW2

actuation

RS RS

OR

&

OR

(Figure 7.3-25)SG2

isolation

OR



Isolation Div. 3


Isolation Div. 3


Isolation Div. 4

OR OR


A R


A R

OR


A R


A R

OR


A R


A R


A R


A R


A R


A R

REV 003EPR3315 T2







Figure 7.3-8—Partial Cooldown Actuation


Same as Division 1

Same as Division 1

(4)

2 out of 4

(4)

Division 3

Same as Division 1

Same as Division 1

(4)

Division 4

Same as Division 1

Same as Division 1

(4)

(Figure 7.2-33)Permissive P14

validated

(Figure 7.3-2)SIS Actuation

&

&

RS

Partial Cooldown Actuation

RS

Partial Cooldown Finished

MIN

OR

Partial Cooldown

Sliding Setpoint

(Figure 7.2-24)Div. 1

RT Initiated

ManualPartial

CooldownInterface

A R

ManualPartial

CooldownInterface

A R

REV 003EPR3320 T2

Tier 2 Revision 5 .3-70


Figure 7.3-9—MSRT Setpoint Formation

Division 2

Same as Division 1

Division 3

Same as Division 1

Division 4

Same as Division 1

NormLow SP

NormSP

(Figure 7.2-33) P14 Vaildated

#

#

Partial Cooldown Sliding Setpoint

(Figure 7.3-8) Partial Cooldown

Actuation

(Figure 7.3-8) Partial

Cooldown Finished

#

Max1p SP MSRT 1

(Nominal Setpoint)

#

SG1 Hi SP

(Figure 7.3-25) SG 1 Isolation

#

SG 3 Hi SP


#

SG 4 Hi SP


#

SG2 Hi SP(Figure 7.3-25)

SG 2 IsolationMax1p SP MSRT 3

Max1p SP MSRT 4

Max1p SP MSRT 2

Partial Cooldown Finished

SP

Division 1

REV 003EPR3325 T2



Figure 7.3-10—MSRIV Opening (Div. 1&2)

max

SG 1 PRESS

[1]

(Figure 7.3-9)

Max 1pMSRT 1

SG 2 PRESS

[1]

SG 3 PRESS

[1]

SG 4 PRESS

[1]

OR

R S

MSRIV 1 Actuation

2 out of 4

(4)

1 out of 2

(2)

max

(Figure 7.3-9)

Max 1pMSRT 2

OR

R S

2 out of 4

(4)

1 out of 2

(2)

max

(Figure 7.3-9)

Max 1pMSRT 3

OR

R S

2 out of 4

(4)

1 out of 2

(2)

max

(Figure 7.3-9)

Max 1pMSRT 4

OR

R S

2 out of 4

(4)

1 out of 2

(2)

Open MSRIV 1 PIL V1 Open MSRIV 2 PIL V1 Open MSRIV 3 PIL V1 Open MSRIV 4 PIL V1


SG 1 PRESS

[2]

SG 2 PRESS

[2]

SG 3 PRESS

[2]

SG 4 PRESS

[2]

Same as Division 1

ManualMSRT 1Actuate

R A

ManualMSRT 2Actuate

R A

ManualMSRT 3Actuate

R A

ManualMSRT 4Actuate

R A

(2) (4) (2) (4) (2) (4) (2) (4)

Same as Division 1

Open MSRIV 1 PIL V2 Open MSRIV 2 PIL V2 Open MSRIV 3 PIL V2 Open MSRIV 4 PIL V2

MSRIV 2 Actuation

ManualMSRT 4Actuation

R A


R A

ManualMSRT 3

Actuattion

R A


R A

EPR3330 T2



Figure 7.3-11—MSRIV Opening (Div. 3&4)

(2) (2) (2)

Same as Division 1

(2) (4) (2) (4) (2) (4) (2) (4)

Same as Division 1


R A


R A

Open MSRIV 4 PIL V4Open MSRIV 3 PIL V4Open MSRIV 2 PIL V4Open MSRIV 1 PIL V4

Division 4

MSRIV 4 Actuation

Open MSRIV 4 PIL V3Open MSRIV 3 PIL V3Open MSRIV 2 PIL V3Open MSRIV 1 PIL V3

Division 3

MSRIV 3 Actuation

Same as Division 1

SG 4 PRESS

[4]

SG 3 PRESS

[4]

SG 2 PRESS

[4]

SG 1 PRESS

[4]

SG 4 PRESS

[3]

SG 3 PRESS

[3]

SG 2 PRESS

[3]

SG 1 PRESS

[3]

(4)(2)(4)(4)(4)


R A


R A

Same as Division 1

EPR3335 T2



Figure 7.3-12—MSRCV Control

(Figure 7.2-8)Nuclear Power

Calculation

#

PI

CLOSEOPEN

SG 1 Press MSRCV 1 Position

#

PI

CLOSEOPEN

#

(Figure 7.3-9)Max1p SP

MSRT1

MSRIV 1 CLSD[1]

Pressure Control Standby Position Control

Division 1Typical for Divisions 2,3,& 4

MSRCV 1

CLOSEOPEN

Div 2Div 3Div 4

2 out of 4

( Figure 7.3-10)MSRIV 1 Actuation

&

MSRIV 1 CLSD [4]MSRIV 1 CLSD [3]MSRIV 1 CLSD [2]

FG1

ManualSetpoint

REV 004EPR3340 T2



Figure 7.3-13—MSRT Isolation

min Min3p


P12 Validated


Same as Division 1

Same as Division 1

(4) (4) (4) (4)

Same as Division 1

Same as Division 1

Same as Division 1

Same as Division 1

SG1Pressure

[1]

SG1Pressure

[2]

SG1Pressure

[3]

SG1Pressure

[4]

SG2Pressure

[2]

SG2Pressure

[3]

SG2Pressure

[4]

SG3Pressure

[2]

SG3Pressure

[3]

SG3Pressure

[4]

SG4Pressure

[2]

SG4Pressure

[3]

SG4Pressure

[4]

&

2 out of 4

(4)

OR

MSRT 1 Isolation Actuation

min Min3p

SG2Pressure

[1]

&

2 out of 4

(4)

OR

min Min3p

SG3Pressure

[1]

&

2 out of 4

(4)

OR

min Min3p

SG4Pressure

[1]

&

2 out of 4

(4)

OR




Close MSRIV 1 PIL V2
















MSRCV 1 MSRCV 2 MSRCV 3 MSRCV 4

R S R S R S R S

1 out of 2

(4) (4)

(2)(2) (2) (2)

(2) (2) (2) (2) (2) (2) (2) (2) (2) (2) (2) (2)(4)(4)(4)(4)(4)(4)

1 out of 21 out of 21 out of 2

ManualMSRT 3 Isolation

R A


R A


R A R A


R A


R A


EPR3345 T2



Figure 7.3-14—Main Steam Isolation (Div. 1&2)

(Figure 7.3-25)SG1

isolation

Division 1

(Figure 7.2-18)RT � SG

pressure drop

(Figure 7.2-19)RT � Low SG

pressure

OR

S R

OR

(Figure 7.3-25)SG3

isolation

(Figure 7.3-25)SG2

isolation

(Figure 7.3-25)SG4

isolation

OR OR

Open MSIV1 FST CLS PIL 1Open MSIV1 EX PIL 1

Close Train 1 BYP I-VClose Train 1 Upstream D-V

Open MSIV2 FST CLS PIL 1 Open MSIV3 FST CLS PIL 1 Close Train 3 BYP C-VClose Train 3 D-V

Open MSIV4 FST CLS PIL 1Open MSIV4 EX PIL 1Close Train 4 Downstream D-V

OR OROR OR

(Figure 7.3-25)SG2

isolation

Division 2

S R

OR

(Figure 7.3-25)SG4

isolation

(Figure 7.3-25)SG1

isolation

(Figure 7.3-25)SG3

isolation

OR OR



Open MSIV1 FST CLS PIL 2 Open MSIV4 FST CLS PIL 2Open MSIV3 FST CLS PIL 2Open MSIV3 EX PIL 2Close Train 3 Downstream D-V

OR OROR OR

Close Train 4 BYP C-VClose Train 4 D-V

Main Steam Isolation

Div. 1


Div. 2

2 out of 4

(4)

2 out of 4

(4)

Same as Division 1R

A R A R

REV 003EPR3350 T2


pressure drop


pressure

OR

(Figure 7.2-23)RT - High

Containment Pressure



ManualMain Steam

Isolation

ManualMain Steam

Isolation

A

ManualMain Steam

Isolation



Figure 7.3-15—Main Steam Isolation (Div. 3&4)

(Figure 7.3-25)SG3

isolation

Division 3

S R

OR

(Figure 7.3-25)SG1

isolation

(Figure 7.3-25)SG2

isolation

(Figure 7.3-25)SG4

isolation

OR OR



Open MSIV4 FST CLS PIL 1 Open MSIV1 FST CLS PIL 3 Close Train 1 BYP C-VClose Train 1 D-V

Open MSIV2 FST CLS PIL 3Open MSIV2 EX PIL 1Close Train 2 Downstream D-V

OR OROR OR

(Figure 7.3-25)SG2

isolation

Division 4

S R

OR

(Figure 7.3-25)SG4

isolation

(Figure 7.3-25)SG3

isolation

(Figure 7.3-25)SG1

isolation

OR OR



Open MSIV3 FST CLS PIL 4 Open MSIV2 FST CLS PIL 4Open MSIV1 FST CLS PIL 4Open MSIV1 EX PIL 2Close Train 1 Downstream D-V

OR OROR OR

Close Train 4 BYP C-VClose Train 4 D-V


Div. 3


Div. 4

Same as Division 1

2 out of 4

(4)

2 out of 4

(4)

Same as Division 1

A R A R

REV 003EPR3355 T2


pressure drop


pressure

OR




pressure drop


pressure

OR



ManualMain Steam

Isolation

ManualMain Steam

Isolation



Figure 7.3-16—MFWS Isolation - Full Load

maxMax0p

maxMax0p

maxMax0p

maxMax0p

SG4 LEVEL NR

[1]

SG1 LEVEL NR

[1]

SG2 LEVEL NR

[1]

SG3 LEVEL NR

[1]

maxMax1p

maxMax1p

maxMax1p

maxMax1p

(4)

2 out of 4

(4)

2 out of 4

(4)

2 out of 4

(4)

2 out of 4


P13 validated


RT Initiated

& &&&

t 0 t 0

& &

OR OR

SG1 Level >Max0p

MFW1 Full load isolation

SG3 Level >Max0p


Division 1


SG4 LEVEL NR

[2]

SG3 LEVEL NR

[2]

SG2 LEVEL NR

[2]

SG1 LEVEL NR

[2]


SG2 Level >Max0p


SG4 Level >Max0p


SG2 Level >Max0p


SG4 Level >Max0p


SG1 Level >Max0p


SG3 Level >Max0p


(4) (4)(4) (4)(4) (4) (4)(4)(4)(4) (4)(4)

SG4 LEVEL NR

[3]

SG3 LEVEL NR

[3]

SG2 LEVEL NR

[3]

SG1 LEVEL NR

[3]

SG4 LEVEL NR

[4]

SG3 LEVEL NR

[4]

SG2 LEVEL NR

[4]

SG1 LEVEL NR

[4]


REV 003EPR3360 T2



Figure 7.3-17—MFWS Isolation - SSS

SG1 Pressure

[1]

(4)

2 out of 4

(4)

2 out of 4

(4)

2 out of 4

(4)

2 out of 4


P12 validated

MFW1 SSS isolation

MFW3 SSS isolation

Division 1



MFW2 SSS isolation

MFW4 SSS isolation

(4) (4)(4) (4)(4) (4) (4)(4)(4)(4) (4)(4)


min

Calculation of variable

SG pressure setpoint

minMin2p

SG2 Pressure

[1]

min



minMin2p

SG3 Pressure

[1]

min



minMin2p

SG4 Pressure

[1]

min



minMin2p

& &

(Figure 7.3-16)SG1 Level >Max0p

(Figure 7.3-16)SG3 Level >Max0p

OR OR

MFW1 SSS isolation

MFW3 SSS isolation

MFW2 SSS isolation

MFW4 SSS isolation

SG1 Pressure

[2]

SG2 Pressure

[2]

SG3 Pressure

[2]

SG4 Pressure

[2]

SG1 Pressure

[3]

SG2 Pressure

[3]

SG3 Pressure

[3]

SG4 Pressure

[3]

SG1 Pressure

[4]

SG2 Pressure

[4]

SG3 Pressure

[4]

SG4 Pressure

[4]

EPR3365 T2

(note 1) (note 1) (note 1) (note 1)

Note 1: The condition to be detected is a SG pressure drop > Max 2p. This is implemented with a variable "Min" setpoint that decreases in a rate-limited manner.

REV 003





Figure 7.3-18—MFW Actuators (Div. 1&2)

Close MFW1 I-VClose MFW1 LLD C-VClose MFW1 VLLD C-V

Close MFW1 FLD C-VClose MFW1 FLD FST CLS PIL2Open MFW1 FLD EX PIL2

Close MFW3 FLD FST CLS PIL1Open MFW3 FLD EX PIL1

Close MFW3 LLD I-V


(Figure 7.3-16)MFW3

Full load isolation

(Figure 7.3-25)SG3

isolation

(Figure 7.3-17)MFW3

SSS isolation

S R

OR OR

OR

OR

ManualMFW 3Isolation

A R




Close MFW4 LLD I-V

S R

(Figure 7.3-16)MFW1

Full load isolation

(Figure 7.3-25)SG1

isolation

(Figure 7.3-17)MFW1

SSS isolation

S R

OR OR

OR

OR


A R

S R

(Figure 7.3-16)MFW2

Full load isolation

(Figure 7.3-25)SG2

isolation

(Figure 7.3-17)MFW2

SSS isolation

S R

OR OR

OR

OR


A R

S R

(Figure 7.3-16)MFW4

Full load isolation

(Figure 7.3-25)SG4

isolation

(Figure 7.3-17)MFW4

SSS isolation

S R

OR OR

OR

OR


A R

S R

EPR3370 T2



Figure 7.3-19—MFW Actuators (Div. 3&4)




Close MFW1 LLD I-V





Close MFW2 LLD I-V

(Figure 7.3-16)MFW1

Full load isolation

(Figure 7.3-25)SG1

isolation

(Figure 7.3-17)MFW1

SSS isolation

S R

OR OR

OR

OR


A R

S R

(Figure 7.3-16)MFW3

Full load isolation

(Figure 7.3-25)SG3

isolation

(Figure 7.3-17)MFW3

SSS isolation

S R

OR OR

OR

OR


A R

S R

(Figure 7.3-16)MFW2

Full load isolation

(Figure 7.3-25)SG2

isolation

(Figure 7.3-17)MFW2

SSS isolation

S R

OR OR

OR

OR


A R

S R

(Figure 7.3-16)MFW4

Full load isolation

(Figure 7.3-25)SG4

isolation

(Figure 7.3-17)MFW4

SSS isolation

S R

OR OR

OR

OR


A R

S R

EPR3375 T2



Figure 7.3-20—Containment Isolation

Containment Service

Compartment Press WR

[1]

(4)

(Figure 7.2-23)RT � High



OR

max Max3p


Same as Division 1


SR

Same as Division 1

S R

ManualStage 2Isolation

A R


R AOR

Same as Division 1

Close Stage 2 CI-V

(4)

max

2 out of 4 2 out of 4

OR

(4)

Max1p

Containment Hi Range Activity

[1]


[2]

(4)


[3]


[4]

Containment Service


[2]

Containment Service


[3]

Containment Service


[4]


RA


R A

2 out of 4

(4)

2 out of 4

(4)

(4)(4) (4) (4) (4)(4) (4) (4) (4)(4)

Note: The Stage 1 Containment Isolation time delays for valves located inside containment are described in Table 6.2.4-1

t 0t 0t 0

Start Accident Annulus Ventilation

Train

Close Stage 1

Inside Reactor Containment

CI-VGroup - 3

CloseStage 1


CI-VGroup � 2

CloseStage 1


CI-VGroup � 1

CloseStage 1 Inside

and Outside Reactor

Containment CI-V

Close Stage 2 CI-VTrip RCP1 Stage 2 CI

Close Stage 1


CI-VGroup - 3

CloseStage 1


CI-VGroup � 2

CloseStage 1


CI-VGroup � 1

CloseStage 1 Inside

and Outside Reactor

Containment CI-V

Trip RCP 2 Stage 2 CI

Close Stage 1


CI-VGroup - 3

CloseStage 1


CI-VGroup � 2

CloseStage 1


CI-VGroup � 1

CloseStage 1 Inside

and Outside Reactor

Containment CI-V



Close Stage 1


CI-VGroup - 3

CloseStage 1


CI-VGroup � 2

CloseStage 1


CI-VGroup � 1

CloseStage 1 Inside

and Outside Reactor

Containment CI-V

Start Accident Annulus Ventilation

Train

REV 005EPR3380 T2



Figure 7.3-21—CVCS Charging Isolation

PZRLEVEL NR

[1]

Same as Division 1


Max2p

Same as Division 1 Same as Division 1

PZRLEVEL NR

[2]

PZRLEVEL NR

[3]

PZRLEVEL NR

[4]


P17 validated

(4)

Close charging line CI-V Close Aux Spray I-V

max

Close Charging Line I-V

ManualCVCS

Isolation 1

R A

(Figure 7.3-20)Stage 2

Containment Isolation

OR

&

2 out of 4(Figure 7.2-36)

Permissive P17 validated

ManualCVCS

Isolation 2

R A

(4)

2 out of 4

(4)

&

OROR

&

2 out of 4

REV 005EPR3385 T2



Figure 7.3-22—CVCS Isolation for Anti-Dilution

COLDLEG1Temp. WR

Calculation of variable setpoint

Calculation of reactor coolant

mass

Calculation of reactor coolant boron concentration

(variable coolant mass)

Boron Concentration

[1]

CVCS Charging Line

Flow[1]

Calculation of reactor coolant

boron concentration (fixed coolant mass)

minmin min

2 out of 42 out of 4 2 out of 4

&&

OR

&

Division 1

Same as Division 1

Same as Division 1


(4) (4)(4)

(4) (4) (4)



P7 validated


P8 validated

Close VCT I-V 1 Close VCT I-V 2Close Letdown line I-V

COLDLEG2Temp. WR

Boron Concentration

[2]

CVCS Charging Line

Flow[2]

R S

ManualBoron

calculation Initialize

A R

ManualBoron

Dilution

A R

COLDLEG3Temp. WR

Boron Concentration

[3]

CVCS Charging Line

Flow[3]

COLDLEG4Temp. WR

Boron Concentration

[4]

CVCS Charging Line

Flow[4]

ManualCVCS

Isolaton for Anti-Dilution

A R

REV 003EPR3390 T2



Figure 7.3-23—EDG Actuation

Div. 1- 6.9kV bus voltage

phase[3]


phase[2]


phase[1]

minMin (LOV)min

Min (DEGV)

t 0TDEGV

1

t 0

TLOV

S R

minMin (LOV)min

Min (DEGV) minmin

Min (DEGV)

Min (LOV)

t 0 t 0

TLOV

t 0 TDEGV 1

t 0

TLOV

2 out of 3 2 out of 3 ManualEDG 1

Actuation

A R

ManualEDG 1

Actuation

A R

OR

OR


Start EDG 1

Division 1


phase[3]


phase[2]


phase[1]

Same as Division 1

Division 2

Start EDG 2


phase[3]


phase[2]


phase[1]

Same as Division 1

Division 3

Start EDG 3


phase[3]


phase[2]


phase[1]

Same as Division 1

Division 4

Start EDG 4

REV 003EPR3395 T2

OR

LOOP

AND

t 0TDEGV

2

TDEGV 1



Figure 7.3-24—PSRV Opening (Brittle Fracture Protection)

max Max PSRV2

max MaxPSRV1

2 out of 4

(4)

&


P17 validated

(4)

Same as Division 1

Division 1

Same as Division 1

(4)

Same as Division 1

Same as Division 1

(4)


HOTLEG1Pressure NR

HOTLEG2Pressure NR

HOTLEG3Pressure NR

HOTLEG4Pressure NR

Open PSRV1 SOV 1

Open PSRV1 SOV 2 Open PSRV2 SOV 1 Open PSRV2 SOV 2


REV 002EPR3400 T2

OR

ManualPSRV

Opening

A R



Figure 7.3-25—SG Isolation (Div. 1&2)

(Figure 7.3-8)

Partial Cooldown Actuation


(4)(4) (4) (4)

Same as Division 1

maxMax1p

maxMax1p

maxMax1p

maxMax1p

maxMax2p

maxMax2p

maxMax2p

maxMax2p

2 out of 4 2 out of 4 2 out of 42 out of 4(4)(4) (4) (4)

2 out of 4 2 out of 42 out of 42 out of 4

SG4 LEVEL NR

[1]

SG1 LEVEL NR

[1]

SG2 LEVEL NR

[1]

SG3 LEVEL NR

[1]

SG 1 SG 4

SG 1 Sel SG 4 Sel

First in Priority

SG 2 SG 3

SG 2 Sel SG 3 Sel

OROROR OR

& &&&

(4) (4)(4)(4)(4)(4)(4)(4)

Same as Division 1

MS1 ACTIVITY

[1]

MS2 ACTIVITY

[1]

MS3 ACTIVITY

[1]

MS4 ACTIVITY

[1]

SG4 LEVEL NR

[2]

SG1 LEVEL NR

[2]

SG2 LEVEL NR

[2]

SG3 LEVEL NR

[2]

MS1 ACTIVITY

[2]

MS2 ACTIVITY

[2]

MS3 ACTIVITY

[2]

MS4 ACTIVITY

[2]

OR OR OR OR

R S R S R S R S


P13 validated

&& & &

(4)(4) (4) (4)

2 out of 4 2 out of 42 out of 42 out of 4

ManualSG1

Isolation

R A

ManualSG2

Isolation

R A

ManualSG3

Isolation

R A

ManualSG4

Isolation

R A

ManualSG Isolation

R A

SG 3 Isolation

SG 4 Isolation

SG 2 Isolation

SG 1 Isolation

(4)(4)(4) (4)

SG 4 Isolation

SG 3 Isolation

SG 2 Isolation

SG 1 Isolation

EPR3405 T2



Figure 7.3-26—SG Isolation (Div. 3&4)

Division 3

Same as Division 1

(4) (4)(4)(4)(4)(4)(4)(4)

Same as Division 1

SG4 LEVEL NR

[3]

SG1 LEVEL NR

[3]

SG2 LEVEL NR

[3]

SG3 LEVEL NR

[3]

MS1 ACTIVITY

[3]

MS2 ACTIVITY

[3]

MS3 ACTIVITY

[3]

MS4 ACTIVITY

[3]

(4)(4)(4) (4)

SG 4 Isolation

SG 3 Isolation

SG 2 Isolation

SG 1 Isolation

Division 4

Same as Division 1

(4) (4)(4)(4)(4)(4)(4)(4)

Same as Division 1

SG4 LEVEL NR

[4]

SG1 LEVEL NR

[4]

SG2 LEVEL NR

[4]

SG3 LEVEL NR

[4]

MS1 ACTIVITY

[4]

MS2 ACTIVITY

[4]

MS3 ACTIVITY

[4]

MS4 ACTIVITY

[4]

(4)(4)(4) (4)

SG 4 Isolation

SG 3 Isolation

SG 2 Isolation

SG 1 Isolation

EPR3410 T2



Figure 7.3-27—RCP Trip

RCP1dP [1]

RCP1dP [2]

t 0

&

2 out of 4

(4)

1 out of 2

min Min 1p min Min 1p

RCP2dP [1]

RCP2dP [2]

Same as Division 1

Same as Division 1

Open RCP1 Breaker Open RCP2 Bus Breaker


(4)

RCP3dP[1]

RCP3dP [2]

Same as Division 1

Same as Division 1

(4)

RCP4dP [1]

RCP4dP [2]

Same as Division 1

Same as Division 1

(4)


Open RCP2 Breaker Open RCP1 Bus Breaker Open RCP3 Breaker Open RCP4 Bus Breaker Open RCP4 Breaker Open RCP3 Bus Breaker

S R

ManualRCPTrip

A R

(Figure 7.3-20)Containment

Isolation Stage 2

OR

REV 002EPR3415 T2

OR

ManualRCP1Trip

A R

S R

ManualRCP2Trip

A R

OR



Figure 7.3-28—MCR Air Conditioning System Isolation and Filtering


max Max1p

1 out of 4

(4)

Same as Division 2

Same as Division 2

(4)

Same as Division 1

Same as Division 1

(4)

Train 4 MCR Intake Activity

[1]

R


[3]

Reconfigure Train 1 Air Intake

R S


[4]

Reconfigure Train 1 Air Intake Reconfigure Train 4 Air Intake

1 out of 2

(2)

(2) (2)

ManualMCR Intake

Interface

AR

REV 003EPR3420 T2

max Max1p

1 out of 4

(4)


[2]

RR S

1 out of 2

(2)

ManualMCR Intake Reconfigure

RA

ManualMCR Intake

Interface

AR

Reconfigure Train 4 Air Intake

OR


ContainmentIsolation

OR


ContainmentIsolation



Figure 7.3-29—Turbine Trip on Reactor Trip Initiation

Turbine Trip

Division 4Division 2 Division 3Division 1


Turbine Trip Turbine Trip Turbine Trip

t 0


RT Initiated

ManualTurbine

Trip

A R

(4)

2 out of 4

OR

S R

ManualTurbine

Trip

A R


(4) (4) (4)


RT Initiated


RT Initiated


RT Initiated

REV 003EPR3425 T2



Figure 7.3-30—Hydrogen Mixing Dampers Opening.

Containment Service

Compartment Press NR

[1]

(4)(8)

2 out of 8

(4)

2 out of 4

Division 1

Same as Division 1

Same as Division 1

(8) (4)(4)


OR

Containment Service


[2]

Equipment Room/Containment Service Compartment Room

dP Sensor [3]


dP Sensor [4]

maxMax1p

S R


dP Sensor [1]

maxMax1p


dP Sensor [2]

maxMax1p

2 out of 4

ManualHMD Open

A R

ManualHMD Open

A R

Same as Division 1

Same as Division 1

(8) (4)(4)

Containment Service


[3]


dP Sensor [5]


dP Sensor [6]

Same as Division 1

Same as Division 1

(8) (4)(4)

Containment Service


[4]


dP Sensor [7]


dP Sensor [8]

Open HMD1Open HMD2 Open HMD3

Open HMD4Open HMD5Open HMD6

Open HMD7Open HMD8

AbsAbs

EPR3426 T2



Figure 7.3-31—AVS Accident Filtration Train Heater Control


Same as Division 1

> Max2pmax

TEMP TEMP

EPR3476 T2

> Max1pmax&

&

IsolationDampers Open

Isolation Dampers Open

Heater FanRunning

1.5 kW Electrical Heater

OnOff


OnOff

TEMP TEMPIsolation

Dampers OpenIsolation

Dampers OpenHeater Fan

Running


OnOff


OnOff



Figure 7.3-32—AVS Accident Train Switchover

Division 4

< Min1p> Max1p

S R

POST HEATER TEMP

[1] PRESS PRESS

> Max2p

DIFFERENTIALPRESS

OR

FILTER BANK ISOLATION INLET

DAMPER OPENED

S R

&

&

Division 1 The same logic switchover is implemented for Train 4 to 1

Containment Isolation Signal

Figure 7.3-20

EPR3478 T2

FILTER BANK ISOLATION OUTLET

DAMPER OPENED

EXHAUST FAN RUNNING

< Min2p> Max2p

POST HEATER TEMP

[2]

Close Filter Bank Isolation Inlet Damper Train 4 Close Filter Bank Isolation Outlet Damper Train 4 Stop Exhaust Fan Train 4 Electric Heater Train 4 Off

Open Filter Bank Isolation Inlet Damper Train 1

Open Filter Bank Isolation Outlet Damper Train 1

Start Exhaust Fan Train 1

Electric Heater Train 1 On

maxmaxmax min min



Figure 7.3-33—CCWS Common 1.b and 2.b Automatic Backup SwitchoverSheet 1 of 2

REV 005EPR3480 T2Division 1 Division 2

OR

Train 1 ESWS Pump Discharge PRESS

Train 1 Pump Discharge PRESS

Train 1 FLOW RATE

min min

- Open Train 1 LHSI HeatExchanger Isolation Valve

- Open Train 1 Pilot Valve 006A- Open Train 1 Pilot Valve 010A- Close Train 2 Pilot Valve 006A- Close Train 2 Pilot Valve 010A

Div 2Div 3Div 4

Div 2Div 3Div 4

Div 2

Div 4Div 3

t 0

min

(Figure 7.3-35)Disable Train 2

Switchover Sequence(Div 2)

&

- Start Train 1 CCW Pump- Start Train 1 ESW Pump

- Open ESW Pump Discharge Isolation Valve

- Start UHS Fans- Start ESW Pump Room Fan

- Close Train 1 Pilot Valve 006A- Close Train 1 Pilot Valve 010A- Open Train 2 Pilot Valve 006A- Open Train 2 Pilot Valve 010A

OR

min min

Train 2 Pump Discharge

PRESS


Train 2 FLOW RATE

t 0

min

&





Train 1 FLOW RATE



Train 1 FLOW RATE



Train 2 FLOW RATE



PRESS

Train 1 FLOW RATE



PRESS

Train 2 FLOW RATE



Train 2 FLOW RATE

Div 1Div 3Div 4

Div 1Div 3Div 4

Div 1

Div 4Div 3





- Open Train 1 Pilot Valve 006B- Open Train 1 Pilot Valve 010B- Close Train 2 Pilot Valve 006B- Close Train 2 Pilot Valve 010B


- Close Train 1 Pilot Valve 006B- Close Train 1 Pilot Valve 010B- Open Train 2 Pilot Valve 006B- Open Train 2 Pilot Valve 010B

- Open Train 1 Pilot Valve 006C- Open Train 1 Pilot Valve 010C- Close Train 2 Pilot Valve 006C- Close Train 2 Pilot Valve 010C

- Close Train 1 Pilot Valve 006C- Close Train 1 Pilot Valve 010C- Open Train 2 Pilot Valve 006C- Open Train 2 Pilot Valve 010C

- Open Train 1 Pilot Valve 006D- Open Train 1 Pilot Valve 010D- Close Train 2 Pilot Valve 006D- Close Train 2 Pilot Valve 010D

- Close Train 1 Pilot Valve 006D- Close Train 1 Pilot Valve 010D- Open Train 2 Pilot Valve 006D- Open Train 2 Pilot Valve 010D




Figure 7.3-33—CCWS Common 1.b and 2.b Automatic Backup SwitchoverSheet 2 of 2


OR



Train 3 FLOW RATE

min min


- Open Train 3 Pilot Valve 006C- Open Train 3 Pilot Valve 010C- Close Train 4 Pilot Valve 006C- Close Train 4 Pilot Valve 010C

Div 1Div 2Div 4

Div 1Div 2Div 4

Div 1

Div 4Div 2

t 0

min



&




- Close Train 3 Pilot Valve 006C- Close Train 3 Pilot Valve 010C- Open Train 4 Pilot Valve 006C- Open Train 4 Pilot Valve 010C

OR

min min



Train 4 FLOW RATE

t 0

min

&



Same as Division 3Same as Division 3 Same as Division 3


PRESS

Train 3 FLOW RATE



Train 3 FLOW RATE



PRESS

Train 4 FLOW RATE



PRESS

Train 3 FLOW RATE



Train 4 FLOW RATE



Train 4 FLOW RATE

Div 1Div 2Div 3

Div 1Div 2Div 3

Div 1

Div 3Div 2





- Open Train 3 Pilot Valve 006D- Open Train 3 Pilot Valve 010D- Close Train 4 Pilot Valve 006D- Close Train 4 Pilot Valve 010D


- Close Train 3 Pilot Valve 006D- Close Train 3 Pilot Valve 010D- Open Train 4 Pilot Valve 006D- Open Train 4 Pilot Valve 010D

- Open Train 3 Pilot Valve 006A- Open Train 3 Pilot Valve 010A- Close Train 4 Pilot Valve 006A- Close Train 4 Pilot Valve 010A

- Close Train 3 Pilot Valve 006A- Close Train 3 Pilot Valve 010A- Open Train 4 Pilot Valve 006A- Open Train 4 Pilot Valve 010A

- Open Train 3 Pilot Valve 006B- Open Train 3 Pilot Valve 010B- Close Train 4 Pilot Valve 006B- Close Train 4 Pilot Valve 010B

- Close Train 3 Pilot Valve 006B- Close Train 3 Pilot Valve 010B- Open Train 4 Pilot Valve 006B- Open Train 4 Pilot Valve 010B


EPR3481 T2



Figure 7.3-34—CCWS Emergency Temperature Control

max> Max1p

max> Max1p

max> Max1p

Train 1 Heat Exchanger

2 out of 3

&

Train 1 Heat Exchanger

Bypass Valve CLOSED


max> Max1p

max> Max1p

max> Max1p

2 of 3

&

1

Train 2 Heat Exchanger Bypass Valve CLOSED

max> Max1p

max max> Max1p

2 of 3

&

1


max> Max1p

max> Max1p

max> Max1p

2 of 3

&

1


Division 2Division 4


TEMP [1]

TEMP [2]

TEMP [3]

TEMP [1]

TEMP [2]

TEMP [3]

TEMP [1]

TEMP [2]

TEMP [3]

TEMP[1]

TEMP [2]

TEMP [3]

EPR3482 T2

Train 2 Heat Exchanger Train 3 Heat Exchanger Train 4 Heat Exchanger

Close Train 1 Heat Exchanger Bypass Valve






Figure 7.3-35—CCWS Emergency Leak Detection

REV 005EPR3484 T2

Division 1The same logic is implemented for Divisions 2,3,& 4

Train 2 Surge Tank Level < Min3

(Div 2)

&

+ -

> Max1p

Common 1.b OCWS Chillers

Outlet Flow

Abs

&

Common 1.b OCWS Chillers

Inlet Flow

max

- Close Common 1.b CONT Ventilation and RCD Inlet Isolation Valve 001

- Close Common 1.b CONT Ventilation and RCD Outlet Isolation Valve 006

- Open Common 1.b OCWS Chillers Inlet Pilot Valve 015A

- Open Common 1.b OCWS Chillers Inlet Pilot Valve 016A

- Open Common 1.b OCWSChillers Outlet Pilot Valve 019A

Train 1 Surge TankLEVEL

[1]

Train 1 Surge TankLEVEL

[2]

min min minminmin

OR

OR

OR

min

OR

&

- Close Train 1 DWDS Supply Isolation Valve

- Disable Train 1 Switchover Sequence

- Open Train 4 Pilot Valve 006A- Open Train 4 Pilot Valve 010A- Open Train 4 Pilot Valve 032A- Open Train 4 Pilot Valve 033A

< Min3p < Min3p < Min4p< Min4p < Min2p

< Min2p

Train 1 Surge Tank Level < Min3(Div 2, 3 & 4)


(Div 3)


(Div 4)

Common 1.b OCWS Chillers Flow Mismatch

(Div 2)

Common 1.b CONT

Ventilation and RCD Coolers

Flow Mismatch(Div 4)

- Open Train 3 Pilot Valve 006A- Open Train 3 Pilot Valve 010A



OR


(Div 2)


(Div 2)

NOTE: -The Common 1.b CONT Ventilation and RCD Coolers Inlet & Outlet Flow Sensors are in Division 4.-The Common 1.b CONT Ventilation and RCD Coolers Outlet Isolation Valve 012 is controlled from Division 4.-The Common 2.b NSR Users Inlet & Outlet Flow Sensors are in Division 4.-The Common 2.b NSR Users Pilot Valves are controlled from Divisions 3 & 4.



Figure 7.3-36—CCWS Emergency Leak Detection - Switchover Valves Leakage or Failure

Division 1

The same logic is implemented for Division 3 & 4 REV 005EPR3490 T2

&


OR OR

- Open Train 2 Pilot Valve 006B- Open Train 2 Pilot Valve 010B- Open Train 2 Pilot Valve 032B- Open Train 2 Pilot Valve 033B

&

Surge Tank 2 LEVEL

[2]

< Min3p > Max2p

Surge Tank 2 LEVEL

[1]

OR

maxminmax> Max2p

min< Min3p

OR

Surge Tank 1 LEVEL

[2]

< Min3p > Max2p

Surge Tank 1 LEVEL

[1]

OR

maxminmax> Max2p

min< Min3p

OR

Division 2

Train 1 Switchover Valves Leakage/Failure

(Div 2, 3 & 4)


(Div 2)


(Div 3)


(Div 4)





(Div 1)


(Div 3)


(Div 4)

- Open Train 4 Pilot Valve 006B- Open Train 4 Pilot Valve 010B

- Open Train 3 Pilot Valve 006B- Open Train 3 Pilot Valve 010B- Open Train 3 Pilot Valve 032B- Open Train 3 Pilot Valve 033B

- Open Train 1 Pilot Valve 006B- Open Train 1 Pilot Valve 010B


(Div 1, 3 & 4)



Figure 7.3-37—SCWS Condenser Supply Water Flow Control


Condenser RefrigerantPRESS

+

-

PI

Close Open

Setpoint

+

-

PI

Close Open

Setpoint

Same as Division 2

EPR3492 T2

Condenser RefrigerantPRESS

OpenClose

CCWS 3-Way Valve

OpenClose

CCWS 3-Way Valve



Figure 7.3-38—ESWPBVS ESWS Pump Rooms Temperature Control

Division 1

< Min1pmin

Outside AirTEMP

max> Max1p


Same as Division 1

Outside AirTEMP

Open Supply DamperOpen Exhaust Damper

Close Supply DamperClose Exhaust Damper

Same as Division 1

Outside AirTEMP



Same as Division 1

Outside AirTEMP





REV 005EPR3498 T2



Figure 7.3-39—FBVS Safety-Related Rooms Heater Control

Division 1

< Min1p

EBS Room TEMP

[1]

> Max1p

Same as Division 1

Division 4

EBS Room TEMP

[2]Pipe Chase Room

TEMP

EBS Room TEMP

[1]

EBS Room TEMP

[2]

OnOff

Pump Room Electrical Heater

OnOff


OnOff

Pipe Chase Electrical Heater

OnOff


Pipe Chase Room TEMP



REV 005EPR3500 T2

max min< Min1p> Max1p

max min< Min1p> Max1p

max min

< Min1p

> Max1pmax min

OnOff


OnOff


OnOff


OnOff




Figure 7.3-40—FBVS EBS / FPCS Pump Rooms Heat Removal

Division 1

< Min1pmin

TEMP

max> Max1p < Min1p

minmax> Max1p < Min1p

minmax> Max1p

Same as Division 1

Division 4

EPR3502 T2

TEMP TEMPFPCPS Pump Room EBS Pump RoomFPCPS Pump Room

FPCPS Pump RoomTEMP

EBS Pump RoomTEMP

FPCPS Pump RoomTEMP

On Off

FPCPS Pump RoomRecirc Cooling Unit Fan

On Off


On Off

EBS Pump RoomRecirc Cooling Unit Fan

On Off


On Off


On Off

EBS Pump RoomRecirc Cooling Unit Fan



Figure 7.3-41—FPCPS Pump Trip on Low SFP Level


< MIN3pmin < MIN3pmin

Same as Division 1

> MIN2pmin

EPR3504 T2

< MIN3pmin

> MIN2pmin

Spent Fuel PoolLEVEL (WR)

[1]

Spent Fuel PoolLEVEL (WR)

[2]

Spent Fuel Pool LEVEL (WR)

[1]

Spent Fuel Pool LEVEL (WR)

[2]

OROR

S R

Stop FPC Pumps Stop FPC Pumps



Figure 7.3-42—CRACS Iodine Filtration Train Heater Control


Same as Division 1

Carbon Filter Train 1 Isolation Damper

OPEN

ESF Filtration Booster FanNot Running


OPEN

Protective Switch-off

TEMP

OR

OR

> Max1p

Carbon Filter Heater Off Carbon Filter Heater Off

max


OPEN

ESF Filtration Booster FanNot Running


OPEN


TEMP

REV 005EPR3508 T2



Figure 7.3-43—CRACS Heater Control for Outside Inlet Air

Same as Division 1


max> Max1p

OR

< Min1p

Downstream of Electric Heater

TEMP[1]

min

Inlet Damper Open

Outlet Damper Open Inlet Damper

OpenOutlet Damper

Open

EPR3510 T2


TEMP [2]


TEMP [1]


TEMP[2]

Heater

OffOn

Heater

OffOn



Figure 7.3-44—CRACS Pressure Control

Division 1

+

-

PI

Close Open

Setpoint

MCR & Reference RoomDIFF PRESS

OpenClose

+

-

PI

Close Open

Setpoint

OpenClose

Division 4

Same as Division 1

EPR3512 T2

MCR & Reference RoomDIFF PRESS

Control Damper Control Damper



Figure 7.3-45—CRACS Cooler Temperature Control


Same as Division 1

Supply Air TEMP

+-

Setpoint

Supply Air TEMP

OpenClose

SCWS Cooler Control Valve

Division 3

Same as Division 1

Supply Air TEMP

OpenClose


Division 2

Same as Division 1

Supply Air TEMP

OpenClose


OpenClose


PI

Close Open

REV 005EPR3514 T2



Figure 7.3-46—SBVS SIS / RHRS Pump Rooms Heat Removal

Division 1

OR


Same as Division 1

LHSI/RHRPump

Running

LHSI/RHRPump

Stopped

LHSIPumpRoomTEMP

[1]

LHSI PumpRoomTEMP

[2]

MHSI PumpRoomTEMP

[1]

MHSI PumpRoomTEMP

[2]

Recirculation Fan On Recirculation Fan Off Recirculation Fan On Recirculation Fan Off

MHSIPump

Stopped

MHSIPump

Running

Same as Division 1

LHSI/RHRPump

Running

LHSI/RHRPump

Stopped

LHSIPumpRoomTEMP

[1]

LHSI PumpRoomTEMP

[2]

MHSI PumpRoomTEMP

[1]

MHSI PumpRoomTEMP

[2]

Recirculation Fan On Recirculation Fan Off

MHSIPump

Stopped

MHSIPump

Running

Same as Division 1

LHSI/RHRPump

Running

LHSI/RHRPump

Stopped

LHSIPumpRoomTEMP

[1]

LHSI PumpRoomTEMP

[2]

MHSI PumpRoomTEMP

[1]

MHSI PumpRoomTEMP

[2]

Recirculation Fan On Recirculation Fan Off

MHSIPump

Stopped

MHSIPump

Running

max min

&

max

max

max

min

min

min

MHSI PumpRoomTEMP

[1]

MHSI PumpRoomTEMP

[2]

LHSI/RHRPump

Running

LHSI/RHRPump

Stopped

LHSIPumpRoomTEMP

[1]

LHSI PumpRoomTEMP

[2]

MHSIPump

Stopped

MHSIPump

Running

REV 005EPR3518 T2




Figure 7.3-47—SBVS CCWS / EFWS Valve Rooms Heat Removal


Same as Division 1

RoomTEMP

[2]

< Min1p> Max1p

RoomTEMP

[1]

< Min1p> Max1p

OR OR

RoomTEMP

[2]

RoomTEMP

[1]

REV 005EPR3520 T2

OFFON

Recirculation Fan

OFFON

Recirculation Fan

OFFON

Recirculation Fan

OFFON

Recirculation Fan

Same as Division 1

RoomTEMP

[2]

RoomTEMP

[1]

Same as Division 1

RoomTEMP

[2]

RoomTEMP

[1]

max min max min



Figure 7.3-48—SBVSE Supply and Recirculation-Exhaust Air Flow Control

< Min1pminmax

> Max1p

S R S R S R

Outside Air Damper Position

OPEN


CLOSEExhaust Damper Position

OPENExhaust Damper Position

CLOSE

&

Recirculation Damper Position OPEN

Recirculation Damper Position CLOSE

&

OPEN CLOSE OPEN CLOSE OPEN CLOSE

OR

Close Minimum Open Minimum

& &

Close MinimumOpen

Minimum

OR

& &

Close Minimum Open Minimum

OR

OR

max> Max2p

Supply AirDownstream of Heaters

TEMP

Outside AirTEMP

[2]

min< Min1p

Division 1The same logic is implemented for Divisions 2,3,& 4

EPR3522 T2

Supply Air Downstream of Heaters

TEMP

Outside Air Damper Exhaust Damper Recirculation Damper

max> Max2p

Outside AirTEMP

[1]

max> Max2p


TEMP



Figure 7.3-49—SBVSE Supply Fan Safe Shut-Off


Same as Division 1

Recirc/ExhaustAir Fan

STOPPED

Recirc/Exhaust Air Fan

STOPPED


CLOSED

Recirculation Damper Position

CLOSED


CLOSED


CLOSED

Stop Supply Fan Stop Supply Fan Stop Supply Fan Stop Recirc/Exhaust Fan

&

OR

Same as Division 1Same as Division 1


STOPPED


CLOSED


CLOSED


STOPPED


CLOSED


CLOSED

REV 005EPR3524 T2



Figure 7.3-50—SBVSE Recirculation Fan Safe Shut-Off


Component Cooling Water Pump Room

TEMP[1]

EPR3526 T2

Recirculation Fan

OnOff


TEMP[2]

max< Min1p > Max1p< Min1p

OROR

minmin max> Max1p

Same as Division 1

Recirculation Fan

OnOff


Emergency Feedwater

Pump Room TEMP

[2]

Emergency Feedwater

Pump Room TEMP

[1]

max< Min1p > Max1p< Min1p

OROR

minmin max> Max1p

OnOff

Recirculation Fan


TEMP[1]


TEMP[2]

Emergency Feedwater

Pump Room TEMP

[2]

Emergency Feedwater

Pump Room TEMP

[1]


TEMP[1]


TEMP[2]

Emergency Feedwater

Pump Room TEMP

[2]

Emergency Feedwater

Pump Room TEMP

[1]


TEMP[1]


TEMP[2]

Emergency Feedwater

Pump Room TEMP

[2]

Emergency Feedwater

Pump Room TEMP

[1]

Recirculation Fan

OnOff

Recirculation Fan

OnOff

Recirculation Fan

OnOff

Recirculation Fan

OnOff

Recirculation Fan

OnOff



Figure 7.3-51—SBVSE Exhaust Fan Safe Shut-Off

Same as Division 1



EPR3528 T2

Exhaust Damper PositionCLOSED




Stop Exhaust Fan Stop Exhaust Fan Stop Exhaust Fan Stop Exhaust Fan



Figure 7.3-52—SBVSE Supply Air Temperature Heater Control

Same as Division 1




TEMP

max> Max1p


TEMP

OnOff

Supply Air Heater

Supply AirDownstream of Heaters

TEMP

< Min1pmin


TEMP

OnOff

Supply Air Heater

OnOff

Supply Air Heater

OnOff

Supply Air Heater

Filter BankDIFF PRESS

< Min1pmin

OR

Filter BankDIFF PRESS


TEMP


TEMP Filter Bank

DIFF PRESS


TEMP


TEMP Filter Bank

DIFF PRESS



Figure 7.3-53—SBVSE Freeze Protection

REV 005EPR3532 T2


Same as Division 1

Outside AirTEMP

[2]

< Min1p > Max1p

Outside AirTEMP

[1]

< Min1p > Max1p

OR OR

Outside AirTEMP

[2]

Outside AirTEMP

[1]

Same as Division 1

Outside AirTEMP

[2]

Outside AirTEMP

[1]

Same as Division 1

Outside AirTEMP

[2]

Outside AirTEMP

[1]

maxmin maxmin

OFFON

Heat Tracing Heater

OFFON

Heat Tracing Heater

OFFON

Heat Tracing Heater

OFFON

Heat Tracing Heater



Figure 7.3-54—SBVSE Supply Air Temperature Control for Supply Air Cooling

Same as Division 1



Supply Air Downstream Of Humidifier

TEMP

PI

Close Open

OpenClose

+

-

Setpoint

OpenCloseOpenCloseOpenClose

EPR3534 T2

Safety Chilled Water Outlet Regulating Valve





TEMP


TEMP


TEMP



Figure 7.3-55—Deleted



Figure 7.3-56—SBVSE Battery Room Heater Control



Battery Room TEMP

Battery Room TEMP

Battery Room TEMPBattery Room

TEMP

< Min1pmin max

> Max1p

Battery Room TEMP

< Min1pmin max

> Max1p < Min1pmin max

> Max1p

Battery Room TEMP

EPR3538 T2

Supply Air Downstream of HeatersFLOW

Supply Air Downstreamof Heaters

FLOW

< Min1pmin

< Min1pmin

OR OR OR


FLOW

< Min1pmin


FLOW

Supply AirDownstreamof Heaters

FLOW

Supply AirDownstreamof Heaters

FLOW

Battery Room Heater

OffOn

Battery Room Heater

OffOn

Battery Room Heater

OffOn

Battery Room Heater

OffOn

Battery Room Heater

OffOn

Battery Room Heater

OffOn



Figure 7.3-57—SBVSE Battery Room Supply Air Temperature Control



Supply Air to BatteryRoom TEMP



Supply Air to Battery Room TEMP

> Max1p max> Max1p


max


max> Max1p

EPR3540 T2

Battery Room Heater Off








Figure 7.3-58—SBVSE EFWS Pump Room Heat Removal

Same as Division 1



Pump Room TEMP

[2]

< Min1pmin

OnOff

max> Max1p

OnOff OnOff OnOff

EPR3542 T2

Pump Room TEMP

[2]

EFWS Pump Room Recirculation Cooler Fan




< Min1pmin max

> Max1p

Pump Room TEMP

[1]

OROR

Pump Room TEMP

[1]

Pump Room TEMP

[2]

Pump Room TEMP

[1]

Pump Room TEMP

[2]

Pump Room TEMP

[1]



Figure 7.3-59—SBVSE CCWS Pump Room Heat Removal

Same as Division 1



ONOFF ONOFF ONOFF ONOFF

EPR3544 T2

CCWS Pump Room Recirculation Cooler Fan




Pump Room TEMP

[2]

< Min1pmin max

> Max1p< Min1pmin max

> Max1p

Pump Room TEMP

[1]

OROR

Pump Room TEMP

[2]

Pump Room TEMP

[1]

Pump Room TEMP

[2]

Pump Room TEMP

[1]

Pump Room TEMP

[2]

Pump Room TEMP

[1]



Figure 7.3-60—SIS / RHRS Automatic RHRS Flow Rate Control

Division 1

Average

+-

Setpoint

RHRS Train 1 Temperature

RHRS Pump Discharge Train 1

Pressure

Density(Based on RHRS Pump Discharge Pressure and

RHRS Temperature)


RHRS Train 1 Flow Rate [1]


&

PI

Close Open

&

Manual Flow Rate

Control

RA

xy(x)*(y)




Pressure RHRS Train 2 Flow Rate [1]










RHRS Heat Exchanger Bypass Control Valve Train 1

OpenClose


OpenClose


OpenClose


OpenClose

REV 005EPR3554 T2



Figure 7.3-62—Isolation of FBVS on Containment Isolation

Same as Division 1



Containment Isolation Signal from the

Protection System

EPR3565 T2

CLOSE-Air Supply Dampers-Exhaust Dampers


Protection System


Protection System


Protection System






Figure 7.3-65—SBVS Isolation of Mechanical Areas of Safeguard Building on Containment Isolation

Division 1 Division 4Division 2 Division 3

CLOSE- Supply Dampers- Exhaust DampersOPEN- Dampers - Isolation DampersSTART- Iodine Filtration Train

CLOSE- Supply Dampers- Exhaust DampersOPEN- Dampers

CLOSE- Supply Dampers- Exhaust DampersOPEN- Dampers

CLOSE- Supply Dampers- Exhaust DampersOPEN- Dampers - Isolation DampersSTART- Iodine Filtration Train

Same as Division 1


Protection System


Protection System



Protection System


Protection System

EPR3572 T2



Figure 7.3-66—SBVS Iodine Filtration Train Electric Heater Control


Same as Division 1

> Max2p

Downstream TEMP 1

> Max1pmax&

&

IsolationDampers Open 2

Isolation Dampers Open 1

Heater FanRunning


OnOff


OnOff


OnOff


OnOff

max

EPR3573 T2

Downstream TEMP 2

Downstream TEMP 1 Isolation

Dampers Open 2Isolation

Dampers Open 1Heater Fan

Running

Downstream TEMP 2



Figure 7.3-67—FBVS Isolation of the Fuel Pool Room


Same as Division 1

CLOSE- Supply Damper- Exhaust Damper

CLOSE- Supply Damper- Exhaust Damper

OR

Fuel Pool Temperature

Fuel Pool Room Activity

max max

Fuel Pool Temperature

Fuel Pool Room Activity

EPR3574 T2



Figure 7.3-68—FBVS Isolation of the Emergency Airlock and Equipment Hatch


Same as Division 1

CLOSE- Emergency Airlock Area Supply Damper- Emergency Airlock Area Exhaust Damper- Fuel Handling Hall Supply Damper- Fuel Handling Hall Exhaust Damper

CLOSE- Emergency Airlock Area Supply Damper- Emergency Airlock Area Exhaust Damper- Fuel Handling Hall Supply Damper- Fuel Handling Hall Exhaust Damper

Reactor Building Activity

max

Reactor Building Activity

EPR3576 T2



Figure 7.3-69—ESWS Flood Prevention in the Safeguard Building


Same as Division 1

> Max3p

Train 1 SUMP LEVEL

max

Same as Division 1Same as Division 1

- Close Train 1 ESWS Pump Discharge Isolation

Valve

- Stop Train 1 ESWS Pump



Valve


Train 3SUMP LEVEL


Valve


Train 2SUMP LEVEL


Valve


Train 4SUMP LEVEL

EPR3577 T2


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