EPRI - Reactor Theory Exam Questions and
answers with 100% Complete Solutions |
verified &updated 2024
Describe the design differences (Steam Production) between the two types of
reactor systems typically used in the United States - ✔✔PWRs
· Boiling occurs in the steam generators and not in the core
· Moisture separators are located in the top part of the steam generators
BWRs
· Boiling occurs in the upper region of the core. The moisture separators and
steam dryers are located at the top of the reactor, necessitating a larger
reactor vessel than a PWR.
· Control of coolant flow rate requires re-circulation loops and jet pump
assemblies, which surround the core.
,Describe the design differences (Reactivity Control) between the two types of
reactor systems typically used in the United States - ✔✔PWRS Control Rods
· Boric Acid addition or dilution (chemical shim)
BWRs
· Control Rods
· Recirculation flow control (steam void control)
Coulombic repulsion (Basic nuclear structure and fission process) -
✔✔Electrostatic force that makes particles with like charge repel each other
along a straight line between their centers; the repulsive force decreases with the
square of the distance between the two charges
Nuclear force (Basic nuclear structure and fission process) - ✔✔The
attractive, short range force among nucleons
, Bohr Model (Basic nuclear structure and fission process) - ✔✔A model of the atom
proposed by Nobel Laureate Niels Bohr in 1913 that describes the atom as
composed of a dense, positively charged nucleus with electrons orbiting around it in
fixed orbits of discrete radii with associated discrete energy states for the atom
Neutron - ✔✔A sub-atomic particle with no charge and about the same mass
as that of a proton
Proton - ✔✔positively-charged particle that, along with neutrons, comprise a
nucleus. Protons have a positive charge exactly equal in magnitude to the charge
of an electron.
Electron - ✔✔negatively-charged particle with little mass that orbits the nucleus.
An atom with an equal number of electrons and protons has a neutral charge.
Isotope - ✔✔Atoms with the same number of protons (same element)
but different numbers of neutrons
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