× 1.7 × 105equivalent
Principles of Water Treatment
The equivalent conductance of Na is
, while the equivalent conductance of
. The conductivity of the solution is
which is well above the limit. Even extremely low concentrations of ionic impurities can easily
be detected. The most probable cause is a depleted or damaged resin bed that is no longer
capable of removing ionic contaminants. The depleted bed should be removed from service,
and a fresh resin bed placed in service.
For most applications in nuclear facilities, the specification that is identified as Very Pure
(1.0 mho/cm maximum conductivity) is used. Ultra Pure demineralized water is normally only
required in laboratory situations and is mentioned for information purposes only.
The important information in this chapter is summarized below.
Water Purity Summary
Water Purity is clarified below.
Degree of Purity
2 - 5
0.2 - 0.5
0.01 - 0.02