Aboveground storage tank double bottom cathodic protection
Book
·
OSTI ID:378077
- Mobil Research and Development Corp., Paulsboro, NJ (United States)
Cathodic protection is typically used to achieve corrosion control between bottoms of aboveground storage tanks with double bottoms. To determine the proper design of such systems, an investigation was conducted on the performance of two different cathodic protection system designs utilizing zinc ribbon anodes. A full scale field test on a 35 meter (115 feet) diameter tank was conducted to determine cathodic protection system performance. The test included periodic measurement of tank bottom steel potentials including on, instant off and polarization decay, anode current output and tank product level measurements.Results showed that zinc ribbon anode spacing in a chord fashion of 1.2 meter (4 feet) or less can be effective to achieve cathodic protection according to industry accepted standards. Utilizing the design information gained by the study, a standard sacrificial anode and impressed current anode cathodic protection system has been developed.
- OSTI ID:
- 378077
- Report Number(s):
- CONF-9606194--; ISBN 1-877914-94-0
- Country of Publication:
- United States
- Language:
- English
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