FUN 2 EO: 1.4-d - Radiation Protection Tech.

FUN 2 EO: 1.4-d

1 / 15

The power being produced by the core after a reactor trip decreases:

By half for every time interval

Incrementally by 1% daily

Two-fold every week

By a quarter each day

2 / 15

Which of the following nuclides is commonly found in the containment airborne levels during normal operations?

H2O and CO2

Xe-133 and Kr-85

Boron

Nitrogen-16

3 / 15

Immediately upon a Reactor Trip, what percentage of power is the core producing?

~ 1%

~ 7%

~ 25%

~ 0.5%

4 / 15

What percentage of power does the core produce 1 hour after the reactor is shut down?

0.005

0.07

0.0025

0.01

5 / 15

How much power does the core produce 1 day after a reactor shutdown?

~ 0.5%

~ 7%

~ 0.25%

~ 1%

6 / 15

What are the radiological conditions during normal operations characterized by?

Only noble gases without any radiation

Stable and low levels of radiation across the entire plant

Extremely high dose rates due to gamma radiation from fission and Nitrogen-16 neutrons

No detectable particulates or iodines

7 / 15

One week after the reactor has been shut down, the core's power output becomes:

~ 1%

~ 0.25%

~ 0.5%

~ 7%

8 / 15

The primary coolant heats the feedwater and causes it to:

Decrease in temperature

Solidify the core

Increase in radiation

Boil, generating steam to drive the Main Turbine

9 / 15

A month after the reactor's shutdown, the power produced by the core is approximately:

~ 0.25%

~ 1%

~ 0.5%

~ 0.125%

10 / 15

What is the purpose of the Reactor Coolant System?

Balances reactivity by diluting boron in the water

Cools down the fuel rods

Provides energy for the core

Generates steam to drive the Main Turbine

11 / 15

Which part of the plant delivers borated water to the Steam Generators?

Two hot legs

Reactor Coolant Pump

Main Turbine

Chemical Volume & Control System

12 / 15

What serves as the SECOND Fission Product Barrier?

The primary piping

Steam Generators

Main Turbine

Reactor Coolant Pump

13 / 15

When the plant is operating, how many loops are working together to take the heat generated in the core from fission and convert it into electrical energy?

14 / 15

Which system maintains the balance by receiving Letdown at the current Reactor Coolant System boron concentration and Charging back water into the Reactor Coolant System at a slightly lower concentration?

Chemical Volume & Control System

Primary Loop

Circulating Water Loop

Secondary Loop

15 / 15

What is the significant energy produced in the reactor for years even after a shutdown referred to as?

Decay Heat

Primary coolant

Dilution process

Core energy

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