NDE of the disposal canisters

Ari Koskinen, Tarja Jäppinen, Matti Sarkimo, Aarne Lipponen, Jonne Haapalainen, Stefan Sandlin, Esa Leskelä, Jorma Pitkänen

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

Abstract

The Finnish concept of high activity nuclear waste disposal is based on deep geological storage in copper canisters with cast iron inserts. Disposal canisters will be embedded in Olkiluoto bedrock at the depth of approximately 400 metres. Therefore it is essential to inspect the canisters with non-destructive testing (NDT) methods as well as possible before the final disposal. The lid of the copper disposal canister for high activity nuclear waste is sealed with a weld. Before accepting the canister to the final disposal the weld will be inspected by four non-destructive testing methods. These methods are ultrasonic testing (UT), radiographic testing (RT), eddy current testing (ET) and remote visual testing (VT) using cameras. The copper overpack and the lid are also inspected with multiple NDT methods; UT, ET and VT. The nodular cast iron insert is inspected with UT and VT. In this paper the four NDT inspection methods for inspection of different parts of the disposal canister are presented in brief. All information in this paper is collected and summarised from public reports and from the procedures of each method and inspection records. Also experts have been interviewed. All of the four NDT methods detect defects in slightly different directions and based on different physical principles. The four methods are therefore supplements to each other in inspection of different parts of the disposal canister.
Original languageEnglish
Title of host publicationBaltica IX. International Conference on Life Management and Maintenance for Power Plants - Abstracts
EditorsPertti Auerkari, Juha Veivo
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Pages60
ISBN (Electronic)978-951-38-8030-9
ISBN (Print)978-951-38-8029-3
Publication statusPublished - 2013
MoE publication typeNot Eligible
EventBALTICA IX - International Conference on Life Management and Maintenance for Power Plants - Helsinki-Stockholm, Finland
Duration: 11 Jun 201313 Jun 2013

Publication series

NameVTT Technology
PublisherVTT
Number107
ISSN (Print)2242-1211
ISSN (Electronic)2242-122X

Conference

ConferenceBALTICA IX - International Conference on Life Management and Maintenance for Power Plants
CountryFinland
CityHelsinki-Stockholm
Period11/06/1313/06/13

Fingerprint

nondestructive testing
testing method
copper
radioactive waste
eddy
iron
waste disposal
defect
bedrock
inspection
method

Cite this

Koskinen, A., Jäppinen, T., Sarkimo, M., Lipponen, A., Haapalainen, J., Sandlin, S., ... Pitkänen, J. (2013). NDE of the disposal canisters. In P. Auerkari, & J. Veivo (Eds.), Baltica IX. International Conference on Life Management and Maintenance for Power Plants - Abstracts (pp. 60). Espoo: VTT Technical Research Centre of Finland. VTT Technology, No. 107
Koskinen, Ari ; Jäppinen, Tarja ; Sarkimo, Matti ; Lipponen, Aarne ; Haapalainen, Jonne ; Sandlin, Stefan ; Leskelä, Esa ; Pitkänen, Jorma. / NDE of the disposal canisters. Baltica IX. International Conference on Life Management and Maintenance for Power Plants - Abstracts. editor / Pertti Auerkari ; Juha Veivo. Espoo : VTT Technical Research Centre of Finland, 2013. pp. 60 (VTT Technology; No. 107).
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abstract = "The Finnish concept of high activity nuclear waste disposal is based on deep geological storage in copper canisters with cast iron inserts. Disposal canisters will be embedded in Olkiluoto bedrock at the depth of approximately 400 metres. Therefore it is essential to inspect the canisters with non-destructive testing (NDT) methods as well as possible before the final disposal. The lid of the copper disposal canister for high activity nuclear waste is sealed with a weld. Before accepting the canister to the final disposal the weld will be inspected by four non-destructive testing methods. These methods are ultrasonic testing (UT), radiographic testing (RT), eddy current testing (ET) and remote visual testing (VT) using cameras. The copper overpack and the lid are also inspected with multiple NDT methods; UT, ET and VT. The nodular cast iron insert is inspected with UT and VT. In this paper the four NDT inspection methods for inspection of different parts of the disposal canister are presented in brief. All information in this paper is collected and summarised from public reports and from the procedures of each method and inspection records. Also experts have been interviewed. All of the four NDT methods detect defects in slightly different directions and based on different physical principles. The four methods are therefore supplements to each other in inspection of different parts of the disposal canister.",
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Koskinen, A, Jäppinen, T, Sarkimo, M, Lipponen, A, Haapalainen, J, Sandlin, S, Leskelä, E & Pitkänen, J 2013, NDE of the disposal canisters. in P Auerkari & J Veivo (eds), Baltica IX. International Conference on Life Management and Maintenance for Power Plants - Abstracts. VTT Technical Research Centre of Finland, Espoo, VTT Technology, no. 107, pp. 60, BALTICA IX - International Conference on Life Management and Maintenance for Power Plants, Helsinki-Stockholm, Finland, 11/06/13.

NDE of the disposal canisters. / Koskinen, Ari; Jäppinen, Tarja; Sarkimo, Matti; Lipponen, Aarne; Haapalainen, Jonne; Sandlin, Stefan; Leskelä, Esa; Pitkänen, Jorma.

Baltica IX. International Conference on Life Management and Maintenance for Power Plants - Abstracts. ed. / Pertti Auerkari; Juha Veivo. Espoo : VTT Technical Research Centre of Finland, 2013. p. 60 (VTT Technology; No. 107).

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

TY - CHAP

T1 - NDE of the disposal canisters

AU - Koskinen, Ari

AU - Jäppinen, Tarja

AU - Sarkimo, Matti

AU - Lipponen, Aarne

AU - Haapalainen, Jonne

AU - Sandlin, Stefan

AU - Leskelä, Esa

AU - Pitkänen, Jorma

PY - 2013

Y1 - 2013

N2 - The Finnish concept of high activity nuclear waste disposal is based on deep geological storage in copper canisters with cast iron inserts. Disposal canisters will be embedded in Olkiluoto bedrock at the depth of approximately 400 metres. Therefore it is essential to inspect the canisters with non-destructive testing (NDT) methods as well as possible before the final disposal. The lid of the copper disposal canister for high activity nuclear waste is sealed with a weld. Before accepting the canister to the final disposal the weld will be inspected by four non-destructive testing methods. These methods are ultrasonic testing (UT), radiographic testing (RT), eddy current testing (ET) and remote visual testing (VT) using cameras. The copper overpack and the lid are also inspected with multiple NDT methods; UT, ET and VT. The nodular cast iron insert is inspected with UT and VT. In this paper the four NDT inspection methods for inspection of different parts of the disposal canister are presented in brief. All information in this paper is collected and summarised from public reports and from the procedures of each method and inspection records. Also experts have been interviewed. All of the four NDT methods detect defects in slightly different directions and based on different physical principles. The four methods are therefore supplements to each other in inspection of different parts of the disposal canister.

AB - The Finnish concept of high activity nuclear waste disposal is based on deep geological storage in copper canisters with cast iron inserts. Disposal canisters will be embedded in Olkiluoto bedrock at the depth of approximately 400 metres. Therefore it is essential to inspect the canisters with non-destructive testing (NDT) methods as well as possible before the final disposal. The lid of the copper disposal canister for high activity nuclear waste is sealed with a weld. Before accepting the canister to the final disposal the weld will be inspected by four non-destructive testing methods. These methods are ultrasonic testing (UT), radiographic testing (RT), eddy current testing (ET) and remote visual testing (VT) using cameras. The copper overpack and the lid are also inspected with multiple NDT methods; UT, ET and VT. The nodular cast iron insert is inspected with UT and VT. In this paper the four NDT inspection methods for inspection of different parts of the disposal canister are presented in brief. All information in this paper is collected and summarised from public reports and from the procedures of each method and inspection records. Also experts have been interviewed. All of the four NDT methods detect defects in slightly different directions and based on different physical principles. The four methods are therefore supplements to each other in inspection of different parts of the disposal canister.

M3 - Conference abstract in proceedings

SN - 978-951-38-8029-3

T3 - VTT Technology

SP - 60

BT - Baltica IX. International Conference on Life Management and Maintenance for Power Plants - Abstracts

A2 - Auerkari, Pertti

A2 - Veivo, Juha

PB - VTT Technical Research Centre of Finland

CY - Espoo

ER -

Koskinen A, Jäppinen T, Sarkimo M, Lipponen A, Haapalainen J, Sandlin S et al. NDE of the disposal canisters. In Auerkari P, Veivo J, editors, Baltica IX. International Conference on Life Management and Maintenance for Power Plants - Abstracts. Espoo: VTT Technical Research Centre of Finland. 2013. p. 60. (VTT Technology; No. 107).