E51 - RCIC

Question 1

When will the min flow valve auto open? and when will it auto close?

Answer 1

> 125 psig AND < 95 gpm OPEN

> 175 gpm CLOSED

Question 2

What are the RCIC turbine throttle trips? (trips the trip/throttle valve)

Answer 2

SOMIE

Suction pressure low > or equal to 6.5”hg (electrical)

Overspeed – approximately 5520 RPM (120%) (mechanical)

Manual PB (Electrical)

Isolation (group 4 isolation) Div 1 OR div 2 signal (Electrical)

Exhaust pressure high (turbine exhaust) > or equal to 25 psig (Electrical)

and also the local trip lever (mechanical)

Question 3

What pump will swap to suppression pool on high level first, RCIC or HPCS?

Answer 3

RCIC

Question 4

How does the Gland Seal Compressor respond to a LOCA?

Answer 4

Trips on Div 1 ECCS initiation,
When signal resets, compressor will auto restart
If level is < -41.6”, AND RCIC gland seal compressor H/S has been taken to stop.

If level is >-41.6” it should manually be started if RCIC is running

Question 5

When will the RCIC steam line warmup valve F076 close?

Answer 5

Group 4 isolation

Question 6

When does the F063 and F064 Steam Supply inboard and outboard isolation valves auto close?

Answer 6

Group 4 isolation

Question 7

When does the RCIC Steam supply drain trap bypass auto open?

Answer 7

Steam supply drain pot level is high

Question 8

What is the normal position of all drain valves?

Answer 8

open

Question 9

when will the drain valves change position?

Answer 9

Closes when the F045 is Not Full closed

Question 10

when can the drain valves be opened?

Answer 10

Can only be opened if F045 is full closed

Question 11

how do drain valves fail on loss of power?

Answer 11

Fail closed

Question 12

Can the gland seal compressors be secured if an actual initiation signal is present?

Answer 12

NO

Question 13

What light indication is available from the P150 panel of the trip/throttle valve?

Answer 13

Motor position only! not actual valve position.

Question 14

What flow does the Min/flow restrict flow to? and where does it discharge to?

Answer 14

90 gpm to the suppression pool

Question 15

where does RCIC Turbine Exhaust to?

Answer 15

Suppression Pool

Question 16

What is the logic for closing RCIC inj valve on level 8?

Answer 16

B and A at +53.5”

Closes F045, which closes F013 injection valve.

Question 17

How does the F077, F078, and F068 respond to a group 9 isolation?

When can they be reopened?

Answer 17

Close on group 9

77 and 78 require BOTH signals clear
F068 only requires one signal to be clear

Question 18

How do you reset a RCIC trip?

Answer 18

Take trip throttle valve closed and then back open

Question 19

What is the indication of an electrical trip? TTV

Answer 19

After reset, one green light and one red light

Question 20

what is the indication of a mechanical trip? TTV

Answer 20

Both lights are green

Question 21

What is indication that all trips are clear, TTV

Answer 21

both lights red

Question 22

What signals initiate RCIC?

Answer 22

Arm and depress manual P/B OR

-41.6” wide range

Question 23

When does RCIC isolate?

Answer 23

+53.5” Rx Level Narrow Range

Question 24

Where does RCIC inject into the RX?

Answer 24

“B” Feedwater line

Question 25

Where does RCIC steam come from?

Answer 25

"A" main steam line, upstream of the MSIV

Question 26

What RPM should RCIC turbine stay above? why?

Answer 26

>2,000 rpm at <2,000 rpm, pump is not able to: 1) provide adequate oil pressure for turbine bearing lubrication and for governor actuator control oil. 2) chattering of the turbine exhaust check valve

Question 27

Where does RCIC get its primary and backup suction from?

Answer 27

CST, backup is suppression pool

Question 28

how many gallons in CST are reserved for RCIC and HPCS? and what else can CST do?

Answer 28

170,000 gallons Return path for testing purposes

Question 29

what is the supervisor showing?

Answer 29

stem position

Question 30

what is the trip throttle valve light showing

Answer 30

motor position

Question 31

what is the purpose of the turbine exhaust vacuum breakers?

Answer 31

prevent drawing a vacuum in RCIC turbine exhaust line following RCIC operation

Question 32

purpose of the gland seal compressor?

Answer 32

provides compressed air to turbine glands to prevent steam leak into RCIC room

Question 33

purpose of the lube oil system?

Answer 33

supplies lubricant for turbine bearings and makeup oil for hydraulic mechanical actuator of the RCIC turbine governor system

Question 34

purpose of the governor?

Answer 34

limits turbine speed to maximum valves and positions governor valve to maintain constant pump discharge flow over the full pressure range of operation

Question 35

what should be done if RCIC injection in mode 1?

Answer 35

Enter loss of Feedwater heating ONEP

Question 36

How long must test switch remain in test after valve stroke is complete?

Answer 36

30 seconds

Question 37

when will the manual isolation pushbutton work?

Answer 37

only after manual or automatic initiation is sealed in

Question 38

what happens on initiation sequence?

Answer 38

immediately: Open signals to F095, F010, F046 Close signals to F022, F029 (CST return valves) Start signal to gland seal compressor. Div 1 manual isolation logic enable After 6 second TD: open signals to F045, F013 F095 Closes on F045 Full open

Question 39

what pressure can RCIC inject into the RX?

Answer 39

165 to 1192 psia

Question 40

what's the purpose of the turbine exhaust rupture disk?

Answer 40

protects the turbine casing and exhaust piping from overpressurization due to exhaust blockage

Question 41

When will the RCIC vacuum breakers auto close?

Answer 41

Group 9

Question 42

What closes on a turbine trip?

Answer 42

Trip throttle valve

Question 43

How do you reset a turbine trip?

Answer 43

Take TTV closed, then open. | check lights to see what type of trip it is

Question 44

What is the normal position of F068, RCIC turbine exhaust to suppression pool?

Answer 44

Open

Question 45

When will F068, RCIC turbine exhaust to suppression pool, auto close? When can it be reopened? What will NOT occur if F068 closed?

Answer 45

< 60 psig Rx AND 1.39 psig drywell pressure (group 9) Can be reopened if EITHER of the above signals clear If F068 is closed, The F095 or F045 will NOT open

Question 46

When will the Test return to CST auto close? (Inboard and outboard)

Answer 46

if F031 full open (suppression pool suction)

Question 47

what are the AC valves for RCIC with Power Supplies?

Answer 47

``` 63 16B31 64 15 76 16 77 15 78 16 ```

Question 48

What cools RCIC room ventilation system?

Answer 48

SSW A

Question 49

How do Air operated valves fail for RCIC?

Answer 49

Closed, It also results in a loss of test return line back to CST

Question 50

When does the CST Suction F010 get open signal?

Answer 50

Auto open on initiation IF F031 is NOT full open (Supp pool suction)

Question 51

When will CST Suction F010 auto close?

Answer 51

Auto closes if F031 full open (Supp pool suction)

Question 52

When can the CST Suction F010 be opened or closed?

Answer 52

Any time from either panel, BUT when travel complete, it will reposition if demand signal is present.

Question 53

When will F031, Supp pool suction valve AUTO OPEN?

Answer 53

<4' CST or >18'9" suppression pool

Question 54

When will F031, Supp pool suction valve AUTO close?

Answer 54

Group 4 isolation

Question 55

What rpm does RCIC turbine trip?

Answer 55

5520

Question 56

what is the power supply to the gland seal compressor?

Answer 56

1DA2

Question 57

power supply to the RCIC Turbine Supply Governor Control?

Answer 57

11DA

Question 58

How does the Governor fail on loss of power?

Answer 58

Open, which causes an overspeed trip so you can reset trip and run RCIC turbine by manually throttling trip throttle valve

Question 59

When will RCIC swap from CST to supp pool suction?

Answer 59

<4' CST or >18'9" Suppression pool

Question 60

What happens if the F045 doesn't open? and what speed will RCIC be at?

Answer 60

Ramp Generator won't start Governor will be OPEN Speed will be around 2,000 rpm

Question 61

Is the RCIC Governor normally closed or normally open?

Answer 61

Open

Question 62

When will the RCIC Governor throttle?

Answer 62

Throttles on F045 coming open

Question 63

When will the steam supply F045 Auto open?

Answer 63

on initiation IF F068 full open AND <53.5" Rx level

Question 64

When will steam supply F045 Auto close?

Answer 64

>53.5"

Question 65

Where can F045 be opened from with >53.5" Rx Level?

Answer 65

P150 (no interlocks)

Question 66

Where can F045 be opened from with F068 (RCIC turbine exhaust to Supp pool) open?

Answer 66

Nowhere!! ???? Should it say the 68 closed..?

Question 67

What is the normal RCIC Test Return FCV to CST position?

Answer 67

Position 2

Question 68

When will the Inj Valve F013 Auto open?

Answer 68

Initiation signal if F045 AND TTV not full closed

Question 69

when will the inj valve F013 Auto close?

Answer 69

Auto close if TTV or F045 Full closed