Reliability of non-destructive test techniques in the inspection of pipelines used in the oil industry

Carvalho, A. A.; Rebello, J. M. A.; Souza, Marcos Paulo Vieira de; Sagrilo, Luís Volnei Sudati; Soares, Sergio Damasceno

doi:10.1016/j.ijpvp.2008.05.001

Cited by 105 publications

(67 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In the discussion of mechanized over manual NDT, mechanized is almost exclusively seen as the front-runner in achieving higher reliability. Other advantages include an increase in data consistency, inspection speed, and the probability of detection; the ability to store data and re-evaluate at a later point in time; the possibility of computerized or completely automated evaluation of data; the ability to augment scans from different directions; and so on [5]. Even though these arguments are not open to debate, the overwhelming focus on technology in this matter has led to neglecting some human performance issues.…”

Section: Introductionmentioning

confidence: 99%

A human factors perspective on the use of automated aids in the evaluation of NDT data

Bertovic

2016

AIP Conference Proceedings

View full text Add to dashboard Cite

Abstract. In comparison to manual NDT methods, mechanized NDT is considered to be more reliable for a number of reasons, one of which being that the role of the inspectors and, therewith, the potential for human error, have been reduced. However, human-automation interaction research suggests that in spite of its numerous benefits, automation can lead to new yet unknown risks. One of those risks is inappropriate reliance on automation, which can result in automation misuse and disuse. The aim of this study was to investigate the potential inappropriate use of automation (specificallythe automated aids) in NDT addressing therewith the prevalent belief in the high reliability of automation held by the NDT community. To address this issue, 70 NDT trainees were asked to control the results of an eddy current data evaluation, allegedly provided by an automated aid, i.e. indication detection and sizing software. Seven errors were implemented into the task and it was measured to what extent the participants agreed with the aid. The results revealed signs of both misuse (agreeing with the aid even though it is incorrect) and disuse (disagreeing with the aid even though it is correct) of the aid that can affect the reliability with which inspections are carried out. Whereas misuse could be explained by a lower propensity to take risks and by a decreased verification behavior-possibly due to bias towards automation and complacent behavior-, disuse was assigned to problems in establishing the sizing criterion or to general difficulties in sizing. The implications of these results for the NDT praxis including suggestions for the decrease of automation bias are discussed.

show abstract

Section: Introductionmentioning

confidence: 99%

A human factors perspective on the use of automated aids in the evaluation of NDT data

Bertovic

2016

AIP Conference Proceedings

View full text Add to dashboard Cite

show abstract

“…Most of the recent damage detection methods rely on visual inspection or on localized measurements such as acoustic or ultrasound methods, magnetic field methods, radiography, eddycurrent methods and thermal field method which requires that the vicinity of the damage area is known a priori and that the portion of the structure being inspected is readily accessible [1]. Those methods can detect damage on or near the surface of the structure [2].…”

Section: Introductionmentioning

confidence: 99%

Oil Transmission Pipelines Condition Monitoring Using Wavelet Analysis and Ultrasonic Techniques

AbuShanab¹

2013

ENG

View full text Add to dashboard Cite

In this paper, a reliable and sensitive diagnostic method for oil pipelines based on wavelet analysis and ultrasonic technique. This will be achieved by the use of 3-D finite element modeling software (Abaqus CAE 6.10) combined with a power full wavelet based signal processing technique will be used to collect the empirical ultrasonic data to validate the developed diagnostic method. The affect known seeded faults i.e., 1 mm hole at 25%, 50%, 75% and 100% depth in pipe wall were investigated using FEM techniques. A developed acoustic transceiver (Air Ultrasonic Ceramic Transducer 235AC130) will be used to collect the empirical ultrasonic data to validate the developed diagnostic method. The amplitudes and frequency spectra of the ultrasonic signals were measured and the predicted results were found to be in good agreement with the measured data, and that to confirm that this method can provide important information on pipe defects.

show abstract

“…CARVALHO et al [15] observaram que defeitos aflorando na superfície oposta, como a falta de penetração em um cordão de solda por exemplo, apresentam um erro no dimensionamento menor para técnicas ultra-sônicas automatizadas comparando com técnicas ultra-sônicas manuais, sendo que a probabilidade de detecção (POD) por TOFD é de 93,8%.…”

Section: Introductionunclassified

Desenvolvimento de metodologia e estudo do potencial da técnica TOFD visando a inspeção e o monitoramento de equipamentos

et al. 2009

View full text Add to dashboard Cite

RESUMOCom o constante crescimento da indústria nacional, cresce também a demanda pelo desenvolvimento de ferramentas eficientes de inspeção e monitoramento da integridade estrutural de equipamentos e estruturas. Dentre estas, destacam-se os ensaios não destrutivos. Das diversas técnicas não destrutivas aplicadas para a inspeção de componentes, destaca-se o uso da técnica de ultra-som convencional para a localização e dimensionamento de defeitos. Porém, em inspeções de campo, devido ao desconhecimento freqüente da orientação dos defeitos, recorre-se a metodologias que utilizam diversos ângulos incidentes e sistemas de análise de sinais, resultando num processo lento e subjetivo de inspeção. Com o aumento da demanda por medidas on line, tem-se elevado a necessidade de processos mais rápidos e confiáveis, dentre estes, destaca-se o uso da técnica de ultra-som via time of flight diffraction (TOFD). Este trabalho apresenta a técnica TOFD como uma ferramenta eficiente na determinação da profundidade de entalhes usinados em blocos de aço SAE 1022, a partir da calibração segundo Norma Britânica BS 7706:1993. Para isso, foi elaborada uma metodologia utilizando quatro variações (freqüência/ângulo) diferentes de inspeção, verificando o potencial do método na análise das diferentes profundidades, a fim de aplicar na inspeção e no monitoramento de equipamentos. Os resultados mostram que tanto para defeitos aflorando na superfície de varredura quanto para defeitos aflorando na superfície oposta, o dimensionamento pode ser preciso, se a variação adequada (freqüência/ângulo) para cada caso for selecionada.Palavras-chaves: ensaios não destrutivos, confiabilidade operacional, TOFD. Development of methodologies applied to inspection of components by TOFD technique ABSTRACTWith the constant growth of the domestic industry, the demand for the development of efficient tools for inspection and monitoring of structural integrity of equipment and structures also grows. Among these, non-destructive testing have been used. Considering to the non-destructive techniques applied to inspection of components used in oil industries, the use of the conventional ultra-sound technique for location and sizing of defects has proved to be important. However, in the field inspections, due to the frequent lack of orientation of defects, are utilized methodologies that use many incident angles and systems analysis of signals, resulting in a slow and subjective inspection. With the increasing of demand for online inspection, the necessity for faster and more reliable processes has been raised, among these, the use of the time of flight diffraction. This work presents TOFD technique as an efficient tool to determine the height of artificials reflectors machined in samples of SAE 1022 steel, from calibration according to British Standard 7706:1993. For this, it was elaborated a methodology using four different variations (frequency / angle) of inspection, verifying the potential of the method in analysis of different heights, in order to apply in inspectio...

show abstract

Reliability of non-destructive test techniques in the inspection of pipelines used in the oil industry

Cited by 105 publications

References 14 publications

A human factors perspective on the use of automated aids in the evaluation of NDT data

A human factors perspective on the use of automated aids in the evaluation of NDT data

Oil Transmission Pipelines Condition Monitoring Using Wavelet Analysis and Ultrasonic Techniques

Desenvolvimento de metodologia e estudo do potencial da técnica TOFD visando a inspeção e o monitoramento de equipamentos

Contact Info

Product

Resources

About