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Plant Systems > Reactor Coolant System > Flashcards

Reactor Coolant System Flashcards

1
Q

What is the Reactor Coolant System flow path?

A

Reactor - steam generator - reactor coolant pump - reactor

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2
Q

How much heat is the reactor coolant system removing during normal operation?

A

4013 MWt

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3
Q

What is the purpose of the reactor core?

A

produce 3990 MWt

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4
Q

How many Control Element Assemblies are in the Reactor Core?

A

89 CEAs

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5
Q

What power is supplied to the Reactor Coolant Pumps?

A

13.8 kV non Class power

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6
Q

What is the purpose of the Reactor Coolant Pumps?

A

Provide her for flow

Add heat to the RCS

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7
Q

What is the purpose of the Thrust Bearing in the RCP?

A

Provide axial support

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8
Q

What is the purpose of the Journal Bearing in the RCP?

A

Provide Radial Support

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9
Q

What cools the seal assembly of the Reactor coolant pumps?

A

Charging from the CVCS

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10
Q

What is the purpose of the Flywheel?

A

Increase Coast down time

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11
Q

What is the purpose of the Pressurizer?

A

maintain the RCS in a subcooled condition

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12
Q

Where is the Pressurizer connected to the Reactor Coolant System?

A

injection connected to loop 1 hot leg

spray connected to loop 1 cold leg

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13
Q

How many safety valves does the pressurizer have?

A

4

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14
Q

What is the ideal saturation of the Pressurizer?

A

2250 psia

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15
Q

How is pressure in the Pressurizer maintained?

A

Pressurizer Pressure Control System using heaters and spray

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16
Q

What is auxiliary Spray?

A

Backup to the Pressurizer Main Spray provided by the Charging Pumps of the CVCS

17
Q

How is pressurizer level maintained?

A

Pressurizer Level Control System using Letdown control valves and Charging Pumps

18
Q

What happens if pressurizer level is 3%, 9%, 15% above set point?

A

3%: turn on heaters
9%: high level alarm
15%: turn off normal running charging pump

19
Q

What happens if pressurizer level is 3.5%, and 23% below set point?

A

3.5%: low level alarm

23%: turn on standby charging pump

20
Q

What happens if pressurizer level equals 25%?

A

All heaters turn off

Plant Systems (9 decks)

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