RCIC

Question 1

RCIC initiation signal?

Answer 1

LL2- 105”

Question 2

RCIC initiation sequence?

Answer 2

F045, Steam Supply, opens (NC)F025/26, Drain pot drains, close when F045 NFC.F004/5, Condensate pump disch. to RBEDT, close when F045 NFC.F046, Cooling supply, opens (NC)F013, Injection valve, opens (NC) if V8 and F045 are NFCBarometric condenser vacuum pump starts

Question 3

RCIC trips

Answer 3

Manual Trip (RTGB and RSDP)Overspeed @ 5625 RPM (RTGB and RSDP)Level High @ 206”. Will not reopen from RSDP (RTGB and RSDP)Exhaust Pressure high @ 50# (RTGB)Exhaust diaphragm pressure high @ 5# (RSDP)Suction Pressure low @ 15” Hg for 13 sec (RTGB and RSDP) Any isolation signal (RTGB)

Question 4

RCIC Group 5 Isolations

Answer 4

Group 5 closes steam supply F007 and F008 and torus suction valves F029 and F031. Isolation signals:Steam line pressure low: 70#Exhaust diaphragm pressure high: 5#Leak detection Steam tunnel HI 165/190F for 27 min Steam tunnel dT 47F for 27 min Steam line are 165F for 27 min dT @ RCIC 47F RCIC area HI 165F Flow high: 220% for 5 sec Manual: OUTBOARD only w/. initiation signal present

Question 5

RCIC Group 9 isolations

Answer 5

Group 9 closes vacuum breakers F062/F066Steam line pressure low @ 70# AND High DW pressure @ 1.7#

Question 6

RCIC discharge pressure @ 800# and 30 gpm, what is the status of F019, Min flow?

Answer 6

Opens @ >130# and <40 gpm

Question 7

What will close the RCIC F013, injection valve?

Answer 7

V8, TTV or F045, Steam supply full closed

Question 8

What will cause the RCIC F010, CST suction, to close?

Answer 8

Both the F029 and F031, Torus suctions, full open

Question 9

Where does RCIC draw steam from?

Answer 9

Main Steam Line C upstream of MSIV

Question 10

Where does RCIC steam exhaust to?

Answer 10

Suppression Pool

Question 11

What is RCIC’s normal suction from?

Answer 11

CST

Question 12

What is RCIC’s alternate suction?

Answer 12

Suppression Pool

Question 13

What will cause the RCIC torus suction valves (F029 and F031) to open?

Answer 13

Low CST level 3 feet, 1 inch.

Question 14

What is the capacity of RCIC?

Answer 14

equal to the boil off rate 15 minutes after a reactor scram (1-2%power)

Question 15

What starts the RCIC ramp generator?

Answer 15

Turbine Steam Supply (F045) valve opening

Question 16

When does the RCIC min flow valve (F019) normally open and close?

Answer 16

Open discharge >130# and <40gpmClose >80gpm

Question 17

What is required for the F013 RCIC injection valve to open?

Answer 17

Auto opens LL2 and V8 TTV and F045 TB steam supply valve not full closed

Question 18

What will cause the RCIC F010, CST suction, to open automatically?

Answer 18

This N.O. valve receives an open signal upon system initiation (LL2), and will open if closed unless both F031 and F029 are open.

Question 19

What is the effect on RCIC when the system is injecting and RPV level reaches 206”?

Answer 19

High RPV level of 206 inches causes F045 to close. F045 FC causes F013 injection valve to close. Steam line drain valves F025, F026 open due to F045 FC. Cond’t Pump Discharge valves to RBEDT F004 and F005 lose their auto close function when F045 closes. Cooling water supply valve F046 does NOT auto close on lack of initiation signal.

Question 20

What is the effect of putting a RCIC valve control in manual at the MCC with regards to PCIS?

Answer 20

PCIS valves in local will no longer close on a Group 5 isolation and they cannot be operated from the control room

Question 21

What is the flow path for RCIC in pressure control?

Answer 21

CST to CST

Question 22

What logic remains when RCIC F045 TB steam supply valve is placed in local at the RSDP?

Answer 22

F045 will still close when RPV level reaches 206”