ESFAS

Question 1

SI signals

Answer 1

1. Manual, 1/2 switches
2. Pzr low pressure, 1829# 2/4
3. Steamline low pressure, 640 psig 2/3 on 1/4 SGs
4. Cont high pressure, 3.4 psig, 2/3

Question 2

CVI signals

Answer 2

Manual phase A
Manual CS/phase B
SI
Cnmt area high rad AR11/12J

Question 3

FWI signals

Answer 3

SI
P14
P4 with low Tave 564F

Question 4

Steamline isolation signals

Answer 4

Manual, 1/2 switches
Steamline low pressure, 640 psig, 2/3 on 1/4 SGs
Steamline high neg rate, >100 psig drop w/in 50 sec 2/3 1/4 SG
Cnmt hi-2 pressure, 8.2 psig, 2/3

Question 5

CS/Phase B signals

Answer 5

Manual 2/2 switches
Cnmt hi pressure, 20 psig 2/4

Question 6

CS/Phase B can/can not be reset with initiating signal still present

Answer 6

CAN

Question 7

Which actuations can be reset with initiating signal still present?

Answer 7

Containment Phase A
Containment Phase B
CVI
Control room vent actuation (from SI)
CS actuation
P-4 with low Tave FW isolation

Question 8

How to reset a FWI after a SI signal

Answer 8

1. Reset SI
2. Block Steamline and pzr low SI (<P-11)
3. Cycle the rx trip breakers to clear P4 seal in
4. Reset FWI main relays
5. Reset the FWI auxiliary relays

Question 9

How to reset a FWI after a P-14

Answer 9

1. Clear P-14, all steam generator levels
2. Cycle the rx trip breakers to clear the P4 seal in
3. Reset FWI main relays
4. Reset the FWI auxiliary relays

Question 10

Once SI has been blocked, how can the block be removed?

Answer 10

Cycle reactor trip breakers to toggle P-4. This will unblock the SI

Question 11

If a reactor trip breaker doesn’t open with a SI, __________ until _______.

Answer 11

SI cannot be reset on that train until that RTB is opened

Question 12

Train A SSPS will de-energize ______ UV coils to open the breakers. Train B SSPS will de-energize _____ UV coils.

Answer 12

Train A, RTA and BYB UV coils
Train B, RTB and BYA UV coils

Question 13

Reactor trip bypass breaker trips

Answer 13

1. Rx trip switch to actuate
2. Manual SI switch to actuate
3. Bypass breaker CS to trip
4. UV coil de-energized
5. Opposite train bypass breaker racked in and closed

Question 14

Reactor trip breaker trips

Answer 14

1. Reactor trip switch to actuate
2. Manual SI switch to actuate
3. Shunt coil energized
4. UV coil de-energized

Question 15

Reactor trip bypass breaker trips when in test

Answer 15

Bypass breaker CS to trip
UV coil de-energized

Question 16

Bypass breaker indication lights on PM05J lit only when _____.

Answer 16

Bypass breaker racked in with fuses installed.

Question 17

SI recirc sump isol valve reset PB will _____ and if not reset will ______.

Answer 17

Remove the auto open signal to SI 8811a/b and remove an auto signal to CV8110/8111
Prevent closure of ACB 1411

Question 18

AUTO SI BLOCKED light will be ______ if _______.

Answer 18

Fast flashing if one train wasnt blocked because of RT or bypass breaker not open

Question 19

SI can be reset After a ______ second time delay,

Answer 19

60 second