ESFAS Signals

Question 1

CIAS setpoints

(2)

Containment Isolation

Answer 1

CNTMT #3 psig
PZR #<1837 psia

Question 2

AFAS setpoints

Answer 2

S/G level 25.8%

Question 3

What will start with a AFAS?

Answer 3

DG
Sequencer starts:
AFB,
(All DG essentials) EW, SP, EC

Question 4

CSAS

Answer 4

CNTMT >#8.5 psig

Containment Spray Actuation Signal

Question 5

What kind of water are we spraying into CNTMT with a CSAS?

Answer 5

Borated (tasty haha)

Question 6

CSAS - What will start?

Answer 6

DG

Sequencer starts:
DG Essentials
CR Essential
FB Essentials

HPSI / LPSI

AF-B
CS
EW
SP
EC

Answer 7

10 min
have to cross tie EW

Question 8

MSIS setpoints?

Answer 8

91% = S/G Narrow range level detector
3# psig = CNTMT pressure
960 psia = S/G pressure

Question 9

RAS setpoints?

Answer 9

9.4% = RWT Level

Question 10

Plant actions after RAS signal?
(RWT Lvl 9.4%)

Answer 10

HPSI/LPSI/CS recirc valves CLOSE.
LPSI stops
CNTMT Sump SI valves OPEN. (SIA-673 & 675)

Question 11

SIAS setpoints?

Answer 11

1837 psia = PZR lvl
3# psig = CNTMT pressure

Question 12

SIAS plant actions?

Answer 12

DGs START
EW, SP, EC STARTS
HPSI / LPSI / CS pumps Start
HPSI / LPSI injection valves open