A review of stray current effects on a gas transmission main in the Boston, Massachusetts area
Book
·
OSTI ID:83089
- Algonquin Gas Transmission Co., Boston, MA (United States)
A reassessment is made of the condition of a major gas transmission pipeline known to be affected by stray D.C. traction currents. The testing procedure used to evaluate the corrosion mitigation program is reviewed. Available voltage recording instrumentation is reviewed with a selection of data loggers and software to best suit the field application. Changes are introduced to existing cathodic protection systems to enable effects of cathodic protection and stray traction current to be recognized independently. Criteria for corrosion control by the effects of cathodic protection and stray traction drainage is reviewed. The use of buried coupons at selected test stations is investigated. Changes in the pipeline configuration relating to corrosion control are introduced during a construction project to upgrade the system operating pressure. An initial field test program is reported with details of problems encountered. Expectations and proposals for ongoing tests to develop future test procedures are discussed.
- OSTI ID:
- 83089
- Report Number(s):
- CONF-940222--
- Country of Publication:
- United States
- Language:
- English
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