VLF Nitrogen Purge System.

This report summarizes the installation of Nitrogen Purge Systems and the accompanying dissolved oxygen sensor systems at the four water cooled very low frequency radio transmitting sites. These four sites differ in their physical plant and transmitting capabilities. To accommodate these differences, the size and configuration of the Nitrogen Purge Systems and Oxygen Sensing Systems are slightly different. The systems are composed of off-the-shelf items to allow for ease of maintenance and repair. Nitrogen purge system Oxygen electrodes Cu Dissolved oxygen Chemical corrosion VLF Dissolved copper