CHAPTER 7 (NUCLEAR PLANT) Flashcards
What is the suggested maximum permissible dose (MPD) of gamma ray exposure for general individuals not working in a nuclear setting, bu choice, in rem/year?
1/2
The number of protons in thee nuclear of an atin of the number of electrons in the orbit of an atom
Atomic number
The process in which a nucleus splits into smaller fragments
Fission
The ability of a substance to absorb neurons is dependent upon which parameter?
Absorption cross section
What kind of bonding do common gases that exist in free as diatomic molecules experiences?
Covalent Bonds
Which of the following is NOT a unit of energy?
Dynes
The process in which a nucleus splits into smaller fragments
Fission
Which of the following is NOT a unit of energy?
Pascals
An electrically charged atom or radical which carries electricity through an electrolyte is called:
ion
What is the smallest particle of an element that can enter into a chemical reaction?
Atom
Beryllium, magnesium, and calcium all belong to which elemental grouping?
Alkaline earth metals
The thickness of material requiref to attenuate radiation to a particular level depends on
the particle, its energy, and the shielding material
Particles that are easily stopped within a few millimeter because their double charges generate path ionization and because they are susceptible to electrostatic interaction are:
alpha radiations
Radiation consisting of singly charged particles that generate to intermediate distances are called:
beta radiations
Radiation with no charge, which produces no ionization, and which is difficult to attenuate thus posing a major health threat
gamma radiations
The property of fluid at a location where the Mach number is unity (at the throat) are called:
critical properties
Gamma attenuation is affected by:
The photoelectric effect, pair production, and Compton scattering
The amount of radiation shield’s dimensional geometry that reduces radiation to half of its original value is called the _____
half-value thickness
The amount of radiation shield’s density that reduces radiation to half of its original value is called the ____
half-value mass
Radiation exposure, the measure of gamma radiation at the surface of an object, is measured in:
roentegens
Radiation exposure rate, the rate of gamma radiation at the surface of an object, is measured in
roentegens per second
Exposure is a measure of ionization surrounding a person, but biological damage is dependent on the amount of energy ______
absorbed
All of the following are practical applications of Einstein’s principle of special relativity except _____
space wrapping
The postulate that no signal or energy can be transmitted with a speed greater than the speed of light is consistent with ____
Einstein’s Law