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Realtime Monitoring of Pipelines for Third-Party Contact. Semi-Annual Technical Progress Report No. 1 October 1, 2003-March 31, 2004.

DE2004824010

Publication Date	2004
Page Count	22
Abstract	Third-party contact with pipelines (typically caused by contact with a digging or drilling device) can result in mechanical damage to the pipe, in addition to coating damage that can initiate corrosion. Because this type of damage often goes unreported and can lead to eventual catastrophic failure of the pipe, a reliable, cost-effective method is needed for monitoring and reporting third-party contact events. The impressed alternating cycle current (IACC) pipeline monitoring method consists of impressing electrical signals on the pipe by generating a time-varying voltage between the pipe and the soil at periodic locations where pipeline access is available. The signal voltage between the pipe and ground is monitored continuously at receiving stations located some distance away. Third-party contact to the pipe that breaks through the coating changes the signal received at the receiving stations. In this project, the IACC monitoring method is being developed, tested, and demonstrated. Work performed to date includes a technology assessment, development of an IACC model to predict performance and assist with selection of signal operating parameters, and experimental measurements on a buried pipe at a test site. Initial results show that simulated contact can be detected. Future work will involve further refinement of the method and testing on operating pipelines.
Keywords	Real-time systems Pipelines Monitoring Coatings Research Damage Performance Testing Technology assessment Impressed alternating cycle control(IACC) IACC pipeline monitoring
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Southwest Research Inst., San Antonio, TX. Applied Physics Div.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200503

Realtime Monitoring of Pipelines for Third-Party Contact. Semi-Annual Technical Progress Report No. 1 October 1, 2003-March 31, 2004.

Realtime Monitoring of Pipelines for Third-Party Contact. Semi-Annual Technical Progress Report No. 1 October 1, 2003-March 31, 2004.
DE2004824010

Publication Date	2004
Page Count	22
Abstract	Third-party contact with pipelines (typically caused by contact with a digging or drilling device) can result in mechanical damage to the pipe, in addition to coating damage that can initiate corrosion. Because this type of damage often goes unreported and can lead to eventual catastrophic failure of the pipe, a reliable, cost-effective method is needed for monitoring and reporting third-party contact events. The impressed alternating cycle current (IACC) pipeline monitoring method consists of impressing electrical signals on the pipe by generating a time-varying voltage between the pipe and the soil at periodic locations where pipeline access is available. The signal voltage between the pipe and ground is monitored continuously at receiving stations located some distance away. Third-party contact to the pipe that breaks through the coating changes the signal received at the receiving stations. In this project, the IACC monitoring method is being developed, tested, and demonstrated. Work performed to date includes a technology assessment, development of an IACC model to predict performance and assist with selection of signal operating parameters, and experimental measurements on a buried pipe at a test site. Initial results show that simulated contact can be detected. Future work will involve further refinement of the method and testing on operating pipelines.
Keywords	Real-time systems Pipelines Monitoring Coatings Research Damage Performance Testing Technology assessment Impressed alternating cycle control(IACC) IACC pipeline monitoring
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Southwest Research Inst., San Antonio, TX. Applied Physics Div.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200503