SCC Detection and Coating Disbondment Detection Improvements Using the High Resolution EMAT ILI-Technology

2004 ◽  
Author(s):  
Thomas Beuker ◽  
Ron Alers ◽  
Bryce Brown ◽  
George Alers
Keyword(s):  
High Resolution ◽  
Measurement Methods ◽  
Detection Capability ◽  
Electromagnetic Acoustic Transducer ◽  
Independent Measurement ◽  
Acoustic Transducer ◽  
Novel Concept ◽  
Full Scale Tests ◽  
Disbonded Coating ◽  
The U.S

Pipeline deterioration by stress corrosion cracking (SCC) is an increasing challenge for the pipeline industry. Recent incidents and the lately issued OPS advisory bulletin in the U.S., emphasize the worldwide focus on this phenomenon. Coating disbondment is understood as a precursor to SCC by increasing the susceptibility of the pipeline for corrosion. The presented High Resolution ILI-technology, based on a novel concept of an Electromagnetic Acoustic Transducer (EMAT), allows both, the detection of SCC and the detection of disbonded coating, using two independent measurement methods. Thus, the technology combines proactive and reactive measures to improve the reliability of a pipeline that is susceptible to SCC. Data from a series of full-scale tests, obtained with the ILI-EMAT prototype, will be presented. The tests were conducted on pipe containing natural SCC colonies. The improvement of SCC detection capability will be demonstrated.

Pipeline Inspection With the High Resolution EMAT ILI-Tool: Report on Full-Scale Testing and Field Trials

2006 ◽  
Author(s):  
Martin Klann ◽  
Thomas Beuker
Keyword(s):  
High Resolution ◽  
Crack Detection ◽  
New Technology ◽  
Wave Theory ◽  
Field Trials ◽  
Guided Wave ◽  
Full Scale ◽  
Operational Conditions ◽  
Full Scale Tests ◽  
Disbonded Coating

In succession of a research project to develop an EMAT in-line inspection technology for the detection of stress corrosion cracking (SCC) and disbonded coating, a 16” EMAT inspection tool was manufactured and tested. This 16” EMAT Crack Detection (ECD) Tool establishes a new high-resolution approach to effective and accurate crack inspection technology especially for gas lines. The performance of this tool was tested on several pipe samples containing natural SCC as well as artifical anomalies and laminations. Furthermore, a field test is currently being conducted, which will detail the tools performance under operational conditions. The new technology will be compared to the results from the established Magnetic Flux Leakage inspection (MFL) technology. EMAT inspection technology, originally designed for detection of SCC, is also sensitive to areas of disbonded coating, other crack-like features, and anomalies like gouging and channeling. To distinguish the different types of pipeline threats, a qualitative defect sizing process is under development incorporating the EMAT data and the information from the other in-line inspection technologies. Following an introduction into EMAT guided wave theory, data from a series of full-scale tests obtained with 34” prototype sensors and the complete 16” ILI-EMAT tool, will be presented. The inspection tool itself, as well as the process for evaluating the recorded data, are undergoing continuous improvements. This paper will discuss the development status of these technologies.

EMAT As a Basis for a Comprehensive System Wide Crack Management Program

2018 ◽  
Author(s):  
David Katz ◽  
Steve Potts ◽  
Thomas Beuker ◽  
Jörg Grillenberger ◽  
Ralf Weber
Keyword(s):  
Ultrasonic Inspection ◽  
Management Program ◽  
Test Facility ◽  
Comprehensive System ◽  
Gas Pipelines ◽  
Electromagnetic Acoustic Transducer ◽  
Statistical Confidence ◽  
Acoustic Transducer ◽  
Full Scale Tests

The integrity of aging assets like gas pipelines are managed by a variety of inspection and validation methods. In the particular case of gas pipelines and their susceptibility to cracking, an ultrasonic inspection methodology has been introduced over the last decade, which is based on an electromagnetic acoustic transducer (EMAT). Meanwhile, a high resolution implementation of the technology has been utilized on in-line inspection (ILI) tools from 10″ to 48″ in diameter. Williams Gas Pipelines have utilized this inspection technology successfully on several pipelines, therefore an overview will be given about this experience. Secondly a case study will be presented, in which a post hydrostatic test ILI service was used to gain additional relevant safety and integrity information from the ILI inspection and to better understand the actual capabilities of a hydrostatic test. The approach taken is in accordance with API 1163 and in consideration of API 1176. As part of this approach the performance of the ILI tool was confirmed based on a set of full scale tests conducted at the PRCI ILI test facility. The results were used to increase the statistical confidence in the capabilities of the technology.

scholarly journals Wave resource characterization at regional and nearshore scales for the U.S. Alaska coast based on a 32-year high-resolution hindcast

2021 ◽  
Vol 170 ◽  
pp. 595-612
Author(s):  
Gabriel García-Medina ◽  
Zhaoqing Yang ◽  
Wei-Cheng Wu ◽  
Taiping Wang
Keyword(s):  
High Resolution ◽  
The U.S

scholarly journals Detection Capability Verification and Performance Test for the High Resolution Imaging Camera of China’s Tianwen-1 Mission

2021 ◽  
Vol 217 (6) ◽  
Author(s):  
Wei Yan ◽  
Jianjun Liu ◽  
Xin Ren ◽  
Chunlai Li ◽  
Qiang Fu ◽  
...  
Keyword(s):  
High Resolution ◽  
Data Processing ◽  
High Resolution Imaging ◽  
Martian Surface ◽  
Detection Capability ◽  
High Quality ◽  
Mars Exploration ◽  
Imaging Camera ◽  
High Resolution Images ◽  
Resolution Imaging

AbstractHigh-resolution optical cameras have always been important scientific payloads in Mars exploration missions, which can obtain detailed images of Martian surface for the study of geomorphology, topography and geological structure. At present, there are still many challenges for Mars high-resolution images in terms of global coverage, stereo coverage (especially for colour images), and data processing methods. High Resolution Imaging Camera (HiRIC) is a high-quality, multi-mode, multi-functional, multi-spectral remote sensing camera that is suitable for the deep space developed for China’s first Mars Exploration Mission (Tianwen-1), which was successfully launched in July 2020. Here we design special experiments based on the in-orbit detection conditions of Tianwen-1 mission to comprehensively verify the detection capability and the performance of HiRIC, from the aspects of image motion compensation effect, focusing effect, image compression quality, and data preprocessing accuracy. The results showed that the performance status of HiRIC meets the requirements of obtaining high resolution images on the Martian surface. Furthermore, proposals for HiRIC in-orbit imaging strategy and data processing are discussed to ensure the acquisition of high-quality HiRIC images, which is expected to serve as a powerful complementation to the current Mars high-resolution images.

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