Primary Plant Chemistry

Question 1

DESCRIBE the process of radiolytic decomposition and recombination of water

Answer 1

H2O -> H2 + O2

Question 2

STATE the advantage of maintaining excess hydrogen in reactor water

Answer 2

• Oxygen control is accomplished by injecting Hydrogen into the RCS to scavenge free Oxygen molecules.

Question 3

STATE the following for reactor water chemistry Nine parameters controlled

Answer 3

pH
Conductivity
Lithium
Hydrogen
Ammonium
Suspended Solids
Oxygen
Halides
Sulfates

Question 4

STATE the possible effects of abnormal chemistry on core conditions

Answer 4

• Maintain the Integrity of the Reactor Coolant System
• Minimize the Deposition of Corrosion Products onto Heat Transfer Surfaces
• Minimize Radiation Exposure to Operating and Maintenance Personnel
• Limit Activity Released to Environment
• Core Reactivity Control