Which statement best describes the primary purpose of a containment building?

Which statement best describes the primary purpose of a containment building?

• A. Containment provides a controlled pressure boundary and prevents release; shielding reduces external dose.
• B. Containment absorbs neutrons; shielding delays pressure.
• C. Containment is for cooling; shielding for air handling.
• D. There is no difference.

Answer: (A)

The idea being tested is the distinct protective roles of containment and shielding in a nuclear plant. Containment provides a controlled pressure boundary and prevents release of radioactive material outside the facility, even in accident scenarios; shielding, on the other hand, reduces the radiation dose reaching people outside the plant by attenuating the radiation as it travels from the source. The statement that best captures both functions is that containment maintains a controlled pressure boundary and prevents release, while shielding reduces external dose. The other descriptions mix up the roles—containment is not primarily for neutron absorption or cooling, and shielding isn’t about air handling—and there is a real difference between the two concepts.

The idea being tested is the distinct protective roles of containment and shielding in a nuclear plant. Containment provides a controlled pressure boundary and prevents release of radioactive material outside the facility, even in accident scenarios; shielding, on the other hand, reduces the radiation dose reaching people outside the plant by attenuating the radiation as it travels from the source. The statement that best captures both functions is that containment maintains a controlled pressure boundary and prevents release, while shielding reduces external dose. The other descriptions mix up the roles—containment is not primarily for neutron absorption or cooling, and shielding isn’t about air handling—and there is a real difference between the two concepts.