NDT Matrix - A tool for selecting non-destructive testing methods for NPP concrete structures

Fahim Al Neshawy, Miguel Ferreira, Edgar Bohner, Jari Puttonen

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Abstract

As concrete structures in nuclear power plants (NPP) are exposed to various environmental conditions, concrete is affected by different deterioration processes during the life time of the power plant. To ensure the integrity and load bearing capacity of the concrete components, especially with regard to the extension of the life time of NPPs, the use of non-destructive testing (NDT) methods are essential for examining the quality of concrete and its reinforcement. However, current NDT techniques are faced with several challenges: (i) NDT inspection may primarily be performed only during the annual overhauls when testing is time-limited, (ii) the accuracy and reliability of NDT testing devices, (iii) uncertainty of the international uniformity of the methods used for NDT tests, and (iv) the creditability of results and analyses. An effective inspection of concrete components is only possible if the deterioration processes are identified and robust NDT testing techniques are available. This paper describes the tool developed for selecting suitable NDT methods for NPP structures made of reinforced concrete based on the age and expected degradation mechanisms of the structures under concern. The paper also assesses critically the NDT techniques that fulfil the needs of the safety evaluation of NPPs in Finland and are currently available for testing of NPP concrete structures.The tool comprises (i) the building materials used in structural components, (ii) ageing defects affecting NPP concrete structures, (iii) available NDT techniques and (iv) inspection schedule for concrete structures recommended for Finnish NPPs.
Original languageEnglish
Title of host publicationTransactions of SMiRT-24
Place of PublicationThe Netherlands
PublisherInternational Assn for Structural Mechanics in Reactor Technology IASMiRT
Publication statusPublished - 2017
MoE publication typeA4 Article in a conference publication
EventSMiRT 24 - Busan, Korea, Democratic People's Republic of
Duration: 20 Aug 201727 Aug 2017

Publication series

NameTransactions of the International conference on structural mechanics in reactor technology
PublisherNorth-Holland
ISSN (Print)0167-563X

Conference

ConferenceSMiRT 24
CountryKorea, Democratic People's Republic of
CityBusan
Period20/08/1727/08/17

Fingerprint

Nondestructive examination
Concrete construction
Nuclear power plants
Concretes
Inspection
Testing
Deterioration
Bearing capacity
Reinforced concrete
Loads (forces)
Reinforcement
Power plants
Aging of materials
Degradation
Defects

Keywords

  • NDT matrix

Cite this

Al Neshawy, F., Ferreira, M., Bohner, E., & Puttonen, J. (2017). NDT Matrix - A tool for selecting non-destructive testing methods for NPP concrete structures. In Transactions of SMiRT-24 The Netherlands: International Assn for Structural Mechanics in Reactor Technology IASMiRT . Transactions of the International conference on structural mechanics in reactor technology, No. 24
Al Neshawy, Fahim ; Ferreira, Miguel ; Bohner, Edgar ; Puttonen, Jari. / NDT Matrix - A tool for selecting non-destructive testing methods for NPP concrete structures. Transactions of SMiRT-24. The Netherlands : International Assn for Structural Mechanics in Reactor Technology IASMiRT , 2017. (Transactions of the International conference on structural mechanics in reactor technology; No. 24).
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abstract = "As concrete structures in nuclear power plants (NPP) are exposed to various environmental conditions, concrete is affected by different deterioration processes during the life time of the power plant. To ensure the integrity and load bearing capacity of the concrete components, especially with regard to the extension of the life time of NPPs, the use of non-destructive testing (NDT) methods are essential for examining the quality of concrete and its reinforcement. However, current NDT techniques are faced with several challenges: (i) NDT inspection may primarily be performed only during the annual overhauls when testing is time-limited, (ii) the accuracy and reliability of NDT testing devices, (iii) uncertainty of the international uniformity of the methods used for NDT tests, and (iv) the creditability of results and analyses. An effective inspection of concrete components is only possible if the deterioration processes are identified and robust NDT testing techniques are available. This paper describes the tool developed for selecting suitable NDT methods for NPP structures made of reinforced concrete based on the age and expected degradation mechanisms of the structures under concern. The paper also assesses critically the NDT techniques that fulfil the needs of the safety evaluation of NPPs in Finland and are currently available for testing of NPP concrete structures.The tool comprises (i) the building materials used in structural components, (ii) ageing defects affecting NPP concrete structures, (iii) available NDT techniques and (iv) inspection schedule for concrete structures recommended for Finnish NPPs.",
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Al Neshawy, F, Ferreira, M, Bohner, E & Puttonen, J 2017, NDT Matrix - A tool for selecting non-destructive testing methods for NPP concrete structures. in Transactions of SMiRT-24. International Assn for Structural Mechanics in Reactor Technology IASMiRT , The Netherlands, Transactions of the International conference on structural mechanics in reactor technology, no. 24, SMiRT 24, Busan, Korea, Democratic People's Republic of, 20/08/17.

NDT Matrix - A tool for selecting non-destructive testing methods for NPP concrete structures. / Al Neshawy, Fahim; Ferreira, Miguel; Bohner, Edgar; Puttonen, Jari.

Transactions of SMiRT-24. The Netherlands : International Assn for Structural Mechanics in Reactor Technology IASMiRT , 2017. (Transactions of the International conference on structural mechanics in reactor technology; No. 24).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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T1 - NDT Matrix - A tool for selecting non-destructive testing methods for NPP concrete structures

AU - Al Neshawy, Fahim

AU - Ferreira, Miguel

AU - Bohner, Edgar

AU - Puttonen, Jari

PY - 2017

Y1 - 2017

N2 - As concrete structures in nuclear power plants (NPP) are exposed to various environmental conditions, concrete is affected by different deterioration processes during the life time of the power plant. To ensure the integrity and load bearing capacity of the concrete components, especially with regard to the extension of the life time of NPPs, the use of non-destructive testing (NDT) methods are essential for examining the quality of concrete and its reinforcement. However, current NDT techniques are faced with several challenges: (i) NDT inspection may primarily be performed only during the annual overhauls when testing is time-limited, (ii) the accuracy and reliability of NDT testing devices, (iii) uncertainty of the international uniformity of the methods used for NDT tests, and (iv) the creditability of results and analyses. An effective inspection of concrete components is only possible if the deterioration processes are identified and robust NDT testing techniques are available. This paper describes the tool developed for selecting suitable NDT methods for NPP structures made of reinforced concrete based on the age and expected degradation mechanisms of the structures under concern. The paper also assesses critically the NDT techniques that fulfil the needs of the safety evaluation of NPPs in Finland and are currently available for testing of NPP concrete structures.The tool comprises (i) the building materials used in structural components, (ii) ageing defects affecting NPP concrete structures, (iii) available NDT techniques and (iv) inspection schedule for concrete structures recommended for Finnish NPPs.

AB - As concrete structures in nuclear power plants (NPP) are exposed to various environmental conditions, concrete is affected by different deterioration processes during the life time of the power plant. To ensure the integrity and load bearing capacity of the concrete components, especially with regard to the extension of the life time of NPPs, the use of non-destructive testing (NDT) methods are essential for examining the quality of concrete and its reinforcement. However, current NDT techniques are faced with several challenges: (i) NDT inspection may primarily be performed only during the annual overhauls when testing is time-limited, (ii) the accuracy and reliability of NDT testing devices, (iii) uncertainty of the international uniformity of the methods used for NDT tests, and (iv) the creditability of results and analyses. An effective inspection of concrete components is only possible if the deterioration processes are identified and robust NDT testing techniques are available. This paper describes the tool developed for selecting suitable NDT methods for NPP structures made of reinforced concrete based on the age and expected degradation mechanisms of the structures under concern. The paper also assesses critically the NDT techniques that fulfil the needs of the safety evaluation of NPPs in Finland and are currently available for testing of NPP concrete structures.The tool comprises (i) the building materials used in structural components, (ii) ageing defects affecting NPP concrete structures, (iii) available NDT techniques and (iv) inspection schedule for concrete structures recommended for Finnish NPPs.

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M3 - Conference article in proceedings

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BT - Transactions of SMiRT-24

PB - International Assn for Structural Mechanics in Reactor Technology IASMiRT

CY - The Netherlands

ER -

Al Neshawy F, Ferreira M, Bohner E, Puttonen J. NDT Matrix - A tool for selecting non-destructive testing methods for NPP concrete structures. In Transactions of SMiRT-24. The Netherlands: International Assn for Structural Mechanics in Reactor Technology IASMiRT . 2017. (Transactions of the International conference on structural mechanics in reactor technology; No. 24).