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Title: An Assessment of Remote Visual Testing System Capabilities for the Detection of Service Induced Cracking

Abstract

Remote visual testing is typically employed to ascertain the condition of materials in components that are inaccessible for direct examination. In the power and petrochemical industries, remote visual testing is used to assess whether service-related degradation is being manifested that, if left unchecked, may eventually impair the structural reliability of a component. Several codes and standards require that visual examinations be periodically conducted. Many of these inspections must be performed remotely due to harsh environments or design geometries of the subject components. This paper describes the attributes and limitations of remote visual testing, performance demonstration standards for camera systems, typical dimensions for service-induced cracking phenomena, and an assessment of the reliability of remote video camera systems at finding cracks. Because many forms of service-induced cracks have very small crack opening dimensions, the reliability of remote visual testing may not be adequate to ensure component integrity, given the capabilities of current camera systems and application practices.

Authors:
; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
15020632
Report Number(s):
PNNL-SA-44190
401001060; TRN: US200521%%205
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Materials Evaluation
Additional Journal Information:
Journal Volume: 63; Journal Issue: 9
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; CAMERAS; DESIGN; DETECTION; DIMENSIONS; OPENINGS; PERFORMANCE; PETROCHEMICALS; RELIABILITY; TESTING; Remote Visual Testing; Cracks; Resolution Standards

Citation Formats

Anderson, Michael T, Cumblidge, Stephen E, and Doctor, Steven R. An Assessment of Remote Visual Testing System Capabilities for the Detection of Service Induced Cracking. United States: N. p., 2005. Web.
Anderson, Michael T, Cumblidge, Stephen E, & Doctor, Steven R. An Assessment of Remote Visual Testing System Capabilities for the Detection of Service Induced Cracking. United States.
Anderson, Michael T, Cumblidge, Stephen E, and Doctor, Steven R. 2005. "An Assessment of Remote Visual Testing System Capabilities for the Detection of Service Induced Cracking". United States.
@article{osti_15020632,
title = {An Assessment of Remote Visual Testing System Capabilities for the Detection of Service Induced Cracking},
author = {Anderson, Michael T and Cumblidge, Stephen E and Doctor, Steven R},
abstractNote = {Remote visual testing is typically employed to ascertain the condition of materials in components that are inaccessible for direct examination. In the power and petrochemical industries, remote visual testing is used to assess whether service-related degradation is being manifested that, if left unchecked, may eventually impair the structural reliability of a component. Several codes and standards require that visual examinations be periodically conducted. Many of these inspections must be performed remotely due to harsh environments or design geometries of the subject components. This paper describes the attributes and limitations of remote visual testing, performance demonstration standards for camera systems, typical dimensions for service-induced cracking phenomena, and an assessment of the reliability of remote video camera systems at finding cracks. Because many forms of service-induced cracks have very small crack opening dimensions, the reliability of remote visual testing may not be adequate to ensure component integrity, given the capabilities of current camera systems and application practices.},
doi = {},
url = {https://www.osti.gov/biblio/15020632}, journal = {Materials Evaluation},
number = 9,
volume = 63,
place = {United States},
year = {Thu Sep 01 00:00:00 EDT 2005},
month = {Thu Sep 01 00:00:00 EDT 2005}
}