RQ-C-4943, Bleed Steam/Feedwater Heater Drains

Question 1

Which one of the following describes, in order, the components in the FW flowpath from the discharge of the Unit 1 Heater Drain Pumps to the steam generators?

A) #5 Heater, MFP, #6 Heater
B) MFP, #5 Heater, #6 Heater
C) MFP, #4 Heater, #5 Heater, #6 Heater
D) #4 Heater, MFP, #5 Heater, #6 Heater

Answer 1

B) MFP, #5 Heater, #6 Heater

Question 2

The Unit 2 South HDP trips. As a direct result, level in the ___________ heater will rise to the high level alarm.

A) Heater 4A
B) Heater 5A
C) Heater 4B
D) Heater 5B

Answer 2

C) Heater 4B

Question 3

Some of the steam extraction lines to the Unit 2 FW and Condensate heaters contain check valves.
Which ONE of the following describes the reason for these check valves?

A) Prevent water hammer events.
B) Ensure drain flowpath from the turbine shells.
C) Prevent turbine overspeed.
D) Ensure pressure differential between the turbine and the heaters.

Answer 3

C) Prevent turbine overspeed.

Question 4

Given the following conditions:
Unit 2 is at 100% power
North & South HDPs are in service.

Which of the following is NOT an appropriate initial operator action if the South HDP trips?

A) Verify the STBY CBP starts.
B) Verify the LP Heater Bypass valve (2-CRV-224) opens if needed.
C) Verify Heater 4B Alternate Drain valve is controlling level.
D) Verify the M HDP auto starts.

Answer 4

D) Verify the M HDP auto starts.