A new probe concept for internal pipework inspection

Rahul Summan, Neha Mathur, Gordon Dobie, Graeme West, Stephen Marshall, Charles MacLeod, Carmelo Mineo, Gareth Pierce

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

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Abstract

The interior visual inspection of nuclear pipework is a critical inspection activity required to ensure the continued safe, reliable operation of plant and thus avoid costly outages. Typically, the video output from a manually deployed probe is viewed by an operator online with the task of identifying and estimating the location of surface defects such as cracks, corrosion and pitting. However, it is very difficult to estimate the nature and spatial extent of defects from the often disorientating small field of view video of a relatively large structure. This work describes a new visual inspection system incorporating a wide field of view machine vision camera and additional sensors designed for inspecting 3 - 6 inch diameter pipes. The output of the system is a photorealistic model of the internal surface of the pipework. The generation of this model relies upon a core component of the system in the form of image feature extraction which estimates camera location. This paper considers the accuracy of this estimation as a function of the number and configuration of the extracted image features.
Original languageEnglish
Title of host publicationNuclear Plant Instrumentation, Control, and Human-Machine Interface Technologies (NPIC&HMIT 2017)
Place of PublicationLa Grange Park, Ill.
PublisherAmerican Nuclear Society
ISBN (Print)9780894487439
Publication statusPublished - 15 Jun 2017
Event10th International Embedded Topical Meeting on Nuclear Plant Instrumentation, Control & Human-Machine Interface Technologies - Hyatt Regency , San Francisco , United States
Duration: 11 Jun 201715 Jun 2017
http://npic-hmit2017.org/

Conference

Conference10th International Embedded Topical Meeting on Nuclear Plant Instrumentation, Control & Human-Machine Interface Technologies
CountryUnited States
CitySan Francisco
Period11/06/1715/06/17
Internet address

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Keywords

  • visual inspection
  • laser profiler
  • structure from motion

Cite this

Summan, R., Mathur, N., Dobie, G., West, G., Marshall, S., MacLeod, C., ... Pierce, G. (2017). A new probe concept for internal pipework inspection. In Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technologies (NPIC&HMIT 2017) La Grange Park, Ill.: American Nuclear Society.