Case study of safe lowering of an in service gas pipeline |
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Authors: | Anil G. Khadakkar K. Ravi Sankar P. Rathinam R. Narayanan S. P. Rao J. K. Popli |
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Affiliation: | Structural Eng Res. Centre, Taramani, Madras-113, India;Former Scientist, Taramani, Madras-113, India;Gas Authority of India Ltd., Baroda, India. |
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Abstract: | This paper describes an experimental investigation carried out involving instrumentation, measurement and monitoring of stresses in a large diameter gas pipeline during its lowering operations. It also highlights the ingenious techniques developed and adopted to overcome the difficulties pertaining to long leadwires, measurement of existing strains on the curved surface of a pipeline and protection of strain gauge installations. These novel methods were used to ensure smooth and proper functioning of strain gauge instrumentation even under the severe field conditions at site for more than two weeks, till the lowering operations and pipeline monitoring was successfully completed. |
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Keywords: | Instrumentation strain measurement field investigation in service pipeline hole drilling technique |
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