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Title: Thermographic inspection of pipes, tanks, and containment liners

Nuclear power plants are required to operate at a high level of safety. Recent industry and license renewal commitments aim to further increase safety by requiring the inspection of components that have not traditionally undergone detailed inspected in the past, such as tanks and liners. NEI 09-14 requires the inspection of buried pipes and tanks while containment liner inspections are required as a part of license renewal commitments. Containment liner inspections must inspect the carbon steel liner for defects - such as corrosion - that could threaten the pressure boundary and ideally, should be able to inspect the surrounding concrete for foreign material that could be in contact with the steel liner and potentially initiate corrosion. Such an inspection requires a simultaneous evaluation of two materials with very different material properties. Rapid, yet detailed, inspection results are required due to the massive size of the tanks and containment liners to be inspected. For this reason, thermal NDE methods were evaluated to inspect tank and containment liner mockups with simulated defects. Thermographic Signal Reconstruction (TSR) was utilized to enhance the images and provide detailed information on the sizes and shapes of the observed defects. The results show that thermographic inspection ismore » highly sensitive to the defects of interest and is capable of rapidly inspecting large areas.« less
Authors:
;  [1] ; ;  [2]
  1. Electric Power Research Institute, 1300 West WT Harris Blvd., Charlotte, NC 28262 (United States)
  2. Thermal Wave Imaging, 845 Livernois St., Ferndale, MI 48220 (United States)
Publication Date:
OSTI Identifier:
22391247
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1650; Journal Issue: 1; Conference: 41. Annual Review of Progress in Quantitative Nondestructive Evaluation, Boise, ID (United States), 20-25 Jul 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CARBON STEELS; COMPUTERIZED SIMULATION; CONCRETES; CONTAINMENT; CORROSION; DEFECTS; EVALUATION; IMAGES; INSPECTION; LINERS; NONDESTRUCTIVE TESTING; NUCLEAR POWER PLANTS; REACTOR SAFETY; THERMOGRAPHY