Abstract

It is desirable that Cl⁻ ions in the primary cooling water of a nuclear power station are detected by a real-time on-line measurement. For the primary cooling water, measurements should be automated to protect the analyst from radiation exposure and to facilitate rapid detection, and should be performed in a cooling tube without waste fluid, which must be treated as radioactive waste. However, for Cl⁻ detection, there is no suitable method that satisfies these requirements. For example, ion chromatography, which is a highly sensitive method, cannot measure in real-time without producing waste fluid. Ion- selective electrode, although a simple and sensitive method, is unsuitable for analysis in the cooling tube because of deterioration of the electrode. The present laser detection method that we have developed satisfies these requirements.

© 1993 Optical Society of America