DETECTION OF UNAUTHORIZED CONSTRUCTION EQUIPMENT IN PIPELINE RIGHT-OF-WAYS

Huebler, James E.

Gas Technology Institute

关键词: Death;    Natural Gas;    Dollars;    Fibers;    Pipelines;   

DOI  :  10.2172/823565
RP-ID  :  NONE
RP-ID  :  FC26-01NT41160
RP-ID  :  823565

美国|英语

来源: UNT Digital Library

【 摘 要 】

Natural gas transmission companies mark the right-of-way areas where pipelines are buried with warning signs to prevent accidental third-party damage. Nevertheless, pipelines are sometimes damaged by third-party construction equipment. A single incident can be devastating, causing death and millions of dollars of property loss. This damage would be prevented if potentially hazardous construction equipment could be detected, identified, and an alert given before the pipeline was damaged. The Gas Technology Institute (GTI) is developing a system to solve this problem by using an optical fiber as a distributed sensor and interrogating the fiber with a custom optical time domain reflectometer. Key issues are the ability to detect encroachment and the ability to discriminate among potentially hazardous and benign encroachments. The work continues on improving the signal-to-noise ratio of the technique. We are now able to detect weights sitting on the Hergalite fiber of as low as 0.2 pound. Detection of load fluctuations with frequencies greater than 1 Hertz is also possible. We have also purchased a brighter diode laser for use with the multimode fibers that should improve our sensitivity by a factor of ten.