EPRI EXAM STUDY QUESTIONS WITH
CORRECT ANSWERS!!
Major mechanical systems filled with water/steam in the plant:
reactor coolant, feedwater, component cooling, service water
What are chemistry control systems in the plant used for?
to prevent corrosion
When does corrosion occur?
any time metal components are exposed to water
Purpose of properly controlled chemistry program:
-protect the reactor coolant system pressure boundary integrity
-protect fuel cladding integrity and fuel performance
-minimize out-of-core radiation fields
-minimize corrosion of all secondary plant and auxilary system components
All matter is composed of
chemicals (elements or compounds)
Fundamental units of elements:
atoms
positively charged ion
cation
negatively charged ion
anion
When two different atoms have the same number of electrons in their outermost shell,
they will have similar chemical properties
, a measure of the number of chemical bonds formed by the atoms of a given element
valance
positive valence
electrons can be given up
negative valence
electrons can be taken in
Reduction reaction
-substance gains electrons or is reduced
-reducing agent supplies additional electrons
Oxidation reaction
-substance loses electrons or is oxidized
-oxidizing agent takes away electrons
What model explans the factors that affect reaction rates
collision theory
What does an increase in temperature do to reaction rate
increase it
What does the presence of a catalyst do to reaction rate
increase it (lower activation energy)
What does an increase in concentation do to reaction rate
increase it (directly proportional)
What forms when an acid and base are combined?
water, a salt, and varying amounts of thermal energy
How can suspended solids be removed?
CORRECT ANSWERS!!
Major mechanical systems filled with water/steam in the plant:
reactor coolant, feedwater, component cooling, service water
What are chemistry control systems in the plant used for?
to prevent corrosion
When does corrosion occur?
any time metal components are exposed to water
Purpose of properly controlled chemistry program:
-protect the reactor coolant system pressure boundary integrity
-protect fuel cladding integrity and fuel performance
-minimize out-of-core radiation fields
-minimize corrosion of all secondary plant and auxilary system components
All matter is composed of
chemicals (elements or compounds)
Fundamental units of elements:
atoms
positively charged ion
cation
negatively charged ion
anion
When two different atoms have the same number of electrons in their outermost shell,
they will have similar chemical properties
, a measure of the number of chemical bonds formed by the atoms of a given element
valance
positive valence
electrons can be given up
negative valence
electrons can be taken in
Reduction reaction
-substance gains electrons or is reduced
-reducing agent supplies additional electrons
Oxidation reaction
-substance loses electrons or is oxidized
-oxidizing agent takes away electrons
What model explans the factors that affect reaction rates
collision theory
What does an increase in temperature do to reaction rate
increase it
What does the presence of a catalyst do to reaction rate
increase it (lower activation energy)
What does an increase in concentation do to reaction rate
increase it (directly proportional)
What forms when an acid and base are combined?
water, a salt, and varying amounts of thermal energy
How can suspended solids be removed?
