NANTeL Plant Systems Overview 2

Question 1

What is the primary function of the Emergency Core Cooling System (ECCS) in a nuclear power plant?

Accepted Answer

To inject water into the reactor core during a loss-of-coolant accident

Answer

To regulate steam pressure in the secondary loop

Answer

To cool the spent fuel pool during normal operations

Answer

To control reactor power through neutron absorption

Question 2

In a pressurized water reactor (PWR), which component maintains the primary coolant at operating pressure?

Accepted Answer

The pressurizer

Answer

The steam generator

Answer

The reactor coolant pump

Answer

The condenser

Question 3

What is the role of the turbine bypass system in a nuclear power plant?

Accepted Answer

To route steam directly to the condenser, bypassing the turbine during transients

Answer

To divert neutrons away from the reactor core

Answer

To bypass the feedwater heaters for maintenance

Answer

To redirect reactor coolant around the steam generators

Question 4

Which plant system is responsible for removing residual decay heat after reactor shutdown?

Accepted Answer

The Residual Heat Removal (RHR) system

Answer

The Chemical and Volume Control System (CVCS)

Answer

The Service Water System

Answer

The Containment Spray System

Question 5

In a boiling water reactor (BWR), where does steam generation occur?

Accepted Answer

Directly in the reactor pressure vessel

Answer

In a separate steam generator on the secondary side

Answer

In the pressurizer vessel

Answer

In the condenser hotwell

Question 6

What is the purpose of the containment isolation valves in a nuclear plant?

Accepted Answer

To prevent release of radioactive material to the environment by closing penetrations in the containment boundary

Answer

To isolate individual reactor fuel assemblies

Answer

To isolate the turbine from the steam generator

Answer

To control flow between the primary and secondary loops

Question 7

Which parameter does the reactor protection system (RPS) monitor to initiate an automatic reactor trip?

Accepted Answer

Multiple process variables such as high neutron flux, low coolant pressure, and high coolant temperature

Answer

Grid frequency and voltage only

Answer

Turbine shaft vibration only

Answer

Generator output power and power factor