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

FUN 2 EO: 1.4-d

1 / 15

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

~ 0.25%

~ 0.125%

~ 1%

~ 0.5%

2 / 15

What is the purpose of the Reactor Coolant System?

Balances reactivity by diluting boron in the water

Generates steam to drive the Main Turbine

Cools down the fuel rods

Provides energy for the core

3 / 15

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

By half for every time interval

By a quarter each day

Incrementally by 1% daily

Two-fold every week

4 / 15

What are the radiological conditions during normal operations characterized by?

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

Only noble gases without any radiation

No detectable particulates or iodines

Stable and low levels of radiation across the entire plant

5 / 15

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

~ 7%

~ 0.5%

~ 25%

~ 1%

6 / 15

What serves as the SECOND Fission Product Barrier?

The primary piping

Main Turbine

Reactor Coolant Pump

Steam Generators

7 / 15

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

0.0025

0.07

0.005

0.01

8 / 15

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

~ 0.5%

~ 1%

~ 0.25%

~ 7%

9 / 15

The primary coolant heats the feedwater and causes it to:

Decrease in temperature

Increase in radiation

Boil, generating steam to drive the Main Turbine

Solidify the core

10 / 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?

11 / 15

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

Two hot legs

Reactor Coolant Pump

Chemical Volume & Control System

Main Turbine

12 / 15

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

~ 0.25%

~ 7%

~ 0.5%

~ 1%

13 / 15

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

Decay Heat

Dilution process

Core energy

Primary coolant

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?

Primary Loop

Chemical Volume & Control System

Circulating Water Loop

Secondary Loop

15 / 15

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

Xe-133 and Kr-85

Boron

H2O and CO2

Nitrogen-16

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