Damage assessment tool

Technical Report · Fri Jan 01 04:00:00 EST 1993

OSTI ID:10169161

Bailey, E I; Read, S R ^[1]

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1. Stress Engineering Services, Inc., Houston, TX (United States)

Once a leak in a subsea pipeline has been located, there are several methods available to deal with it. These range in cost and difficulty from relaying the line to installing a repair clamp over the leak. Installing the clamp is the quickest and least expensive method if the reliability of this fix is sufficient. However, there are no methods available today that provide for the investigation of the condition of the pipe below depths where divers operate. The objective of this project was to develop the requirements and possible configurations of a tool (system) which has the capability to inspect a limited region of a pipeline. This tool will provide detailed information regarding the pipeline geometry distortions and will define the limits and orientation of a crack in the pipe, or define the leaking defect. The tool will be deployed by a remotely operated vehicle (ROV). Several types of technology are available to choose from. These include magnetic particle inspection, eddy current inspection, ultrasonic inspection, photogrammetry, videogrammetry, ring gauging, and contact dimensional acquisition. The final instrument system will probably utilize two or more of these systems for proving up the condition of the pipe.

• Research Organization: American Gas Association, Inc., Arlington, VA (United States); Stress Engineering Services, Inc., Houston, TX (United States)
• Sponsoring Organization: American Gas Association, Inc., Arlington, VA (United States)
• OSTI ID: 10169161
• Report Number(s): AGA--94015622; ON: UN94015622; CNN: Project PR-201-9112
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
022000
03 NATURAL GAS
032000
42 ENGINEERING
423000
COMPARATIVE EVALUATIONS
EDDY CURRENT TESTING
INSPECTION
LEAKS
MAGNETIC TESTING
MARINE ENGINEERING
PHOTOGRAPHY
PIPELINES
REMOTE CONTROL
REMOTE VIEWING EQUIPMENT
TECHNOLOGY ASSESSMENT
TELEVISION CAMERAS
TRANSPORT, HANDLING, AND STORAGE
ULTRASONIC TESTING
UNDERWATER OPERATIONS