The effects of DC ripple from cathodic protection rectifiers
Conference
·
OSTI ID:549919
- ENTEX, Inc., Houston, TX (United States)
The phenomenon of positive spiking in Direct Current(DC) ripple is not well understood by most cathodic protection field personnel. This study was an attempt to verify the existence of positive spiking in DC ripple, and possible results. During the project one hundred cathodic protection (CP)rectifiers were observed and oscilloscope waveforms recorded in Tyler, TX. In Bishop, TX stainless steel pins were utilized to observe and record waveforms. Finally a laboratory type experiment was developed using steel nails as anodes and cathodes to observe different corrosion rates by different current sources. An existing CP rectifier installation was employed, to provide both filtered and unfiltered DC protective currents, and a wet cell battery to provide pure DC protective currents. These studies indicate corrosion rates may be affected by positive spiking.
- OSTI ID:
- 549919
- Report Number(s):
- CONF-970332--
- Country of Publication:
- United States
- Language:
- English
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