Solar corrosion control of distribution piping

Journal Article · Mon Apr 01 00:00:00 EST 1985 · Pipeline News; (United States)

OSTI ID:5848856

Evans, J

Washington Natural Gas Company recognized that it could reduce cost and help insure public safety by cathodically protecting coated steel distribution systems. With 100% of mains protected from external corrosion, it could significantly reduce the number of corrosion leaks and, in the process, extend the life of the steel distribution system indefinitely. Washington Natural's franchise area has over 4000 miles of wrapped distribution main and over 250,000 service lines. These mains and services are in widely divergent areas geographically; they are also subject to widely divergent soil resistivities which range from 500 Ohms/cubic meter (very aggressive) to 350,000 Ohms/cubic meter (extremely mild). Each cathodic protection station must be designed for a particular installation. The company decided that large sections of mains would be cathodically protected between 50 and 400 feet below the surface. Small isolated sections of main would be protected with sacrificial magnesium anodes. This procedure worked very well for 90% of the system. The performance of the cathodic protection system is described.

• Research Organization: Washington Natural Gas Co., Kirkland
• OSTI ID: 5848856
• Journal Information: Pipeline News; (United States), Vol. 57:3
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
14 SOLAR ENERGY
NATURAL GAS
TRANSPORT
NATURAL GAS DISTRIBUTION SYSTEMS
CATHODIC PROTECTION
PHOTOVOLTAIC POWER SUPPLIES
PERFORMANCE
PIPELINES
ELECTRIC BATTERIES
ELECTROCHEMICAL CORROSION
CHEMICAL REACTIONS
CORROSION
CORROSION PROTECTION
ELECTROCHEMICAL CELLS
ELECTRONIC EQUIPMENT
ENERGY SOURCES
ENERGY SYSTEMS
EQUIPMENT
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
POWER SUPPLIES
SOLAR EQUIPMENT
032000* - Natural Gas- Transport
Handling
& Storage
140600 - Solar Energy- Photovoltaic Power Systems