RPS

Question 1

What is the Safety Related function of RPS?

Answer 1

• Keep the reactor fuel within minimum DNBR design limits.
• Assist in limiting RCS pressure to within design constraints.

Question 2

What is the only tech spec function of P4?

Answer 2

Permits manual reset of SI when P4 is reset (Off)

Question 3

What is the Non-Safety Related Function of RPS?

Answer 3

• Initiate a turbine trip from a reactor trip signal.
• Provide the status and alarm conditions of input signals to the SSPS and the status of output signals from the SSPS.

Question 4

What feeds into OTΔT, and what does it protect from?

Answer 4

OTΔT protects from DNB.
Inputs from ΔTT, Tave, AFD & Pzr Press

Question 5

What feeds into OPΔT, and what does it protect from?

Answer 5

OPΔT protects from KW/Ft.
Inputs from ΔT & Tave

Question 6

Which Reactor Trips protect against DNB?

Answer 6

1. OTΔT
2. RCS Loss of Flow
3. RCP Breaker Open
4. RCP Bus Undervoltage
5. RCP Bus Underfrequency

Question 7

What does an AMSAC Actuation Initiate?

Answer 7

1. Turbine Trip
2. Motor-Driven AFW Pump Start
3. Turbine-Driven AFW Pump Start
4. Auxiliary Feedwater Flow Conservation Initiation

Question 8

What are the safety related functions of the Engineered Safety Features Actuation System (ESFAS)?

Answer 8

• Actuate Safety Injection (SI).
• Actuate Containment Isolation.
• Actuate Containment Spray.
• Provide indication to the operators of plant conditions.

Question 9

What are the accident mitigation suppor functions of the Engineered Safety Features Actuation System (ESFAS)?

Answer 9

• Isolate main steam line.
• Isolate main feedwater.
• Actuate auxiliary feedwater

Question 10

What are all the things that can give a Safety Injection, including Coincidence, Setpoint and interlocks?

Answer 10

Question 11

What are all the things that can give a Steam Line Isolation, including Coincidence, Setpoint and interlocks?

Answer 11

Question 12

What are all the things that can give a Turbine Trip and Feedwater Isolation, including Coincidence, Setpoint and interlocks?

Answer 12

Question 13

What can give a Containment Ventilation Isolation?

Answer 13

• Containment Isolation Phase A
• Containment Isolation Phase B/Containment Spray
• SI signal
• Containment radiation monitors

For Containment Rad Monitors, only channel 1 for Upper and 1, 3 and 5 for Lower

Question 14

What instrument feeds into the high Steam Flow status lights?

Answer 14

MPC-253/254

Question 15

If there is a Feedwater Isolation, how does the status of the reactor trip breakers feed into the FMOs?

Answer 15

FMOs are TRAIN SPECIFIC. If that train reactor trip breaker isn’t open, then those FMOs will remain open.

FRVs will all go closed still.

Question 16

If NEITHER CEQ Fans start, what might this mean?

Answer 16

Potential Loss of Containment. May upgrade your Eplan call