Design assessment for manufacturability of supporting structures for IWS and ELM coil of ITER vacuum vessel
► A “bridge type” welding method was proposed for IWS rib and ELM coil supports. ► This method could reduce the welding distortion and increase the manufacturability. ► Structural integrity of proposed design was assessed for both P and S type damages. ► Results show that the proposed designs meet t...
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Published in | Fusion engineering and design Vol. 88; no. 9-10; pp. 1886 - 1890 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
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Elsevier B.V
01.10.2013
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Abstract | ► A “bridge type” welding method was proposed for IWS rib and ELM coil supports. ► This method could reduce the welding distortion and increase the manufacturability. ► Structural integrity of proposed design was assessed for both P and S type damages. ► Results show that the proposed designs meet the design criteria of RCC-MR.
A vacuum vessel is one of the core facilities of ITER (International Thermonuclear Experimental Reactor) and basically all-welded structure. Korea is responsible for the procurement of sector 1 and 6 of the main vessel. Accordingly, the design review for the fabrication is in progress by ITER Korea and Hyundai Heavy Industries. Due to anticipated manufacturing problems such as the welding distortion, the design of some components of main vessel, IWS (In-Wall Shield) supporting rib and ELM (Edge Localized Mode) coil support, needs to be modified. To release the risk of welding distortion, the welding method called “bridge type” is suggested and the shape of weld joint is adjusted to secure the manufacturability of the issued components. The elastic and limit analyses with fatigue evaluation have been performed under the most critical loading condition to verify the structural integrity of modified design. Analysis results show that the proposed designs meet the design criteria of RCC-MR. The design deviation requests have been submitted to ITER Organization and ANB (Agreed Notified Body) for approval and their verification is currently in progress. |
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AbstractList | A vacuum vessel is one of the core facilities of ITER (International Thermonuclear Experimental Reactor) and basically all-welded structure. Korea is responsible for the procurement of sector 1 and 6 of the main vessel. Accordingly, the design review for the fabrication is in progress by ITER Korea and Hyundai Heavy Industries. Due to anticipated manufacturing problems such as the welding distortion, the design of some components of main vessel, IWS (In-Wall Shield) supporting rib and ELM (Edge Localized Mode) coil support, needs to be modified. To release the risk of welding distortion, the welding method called abridge typea is suggested and the shape of weld joint is adjusted to secure the manufacturability of the issued components. The elastic and limit analyses with fatigue evaluation have been performed under the most critical loading condition to verify the structural integrity of modified design. Analysis results show that the proposed designs meet the design criteria of RCC-MR. The design deviation requests have been submitted to ITER Organization and ANB (Agreed Notified Body) for approval and their verification is currently in progress. A vacuum vessel is one of the core facilities of ITER (International Thermonuclear Experimental Reactor) and basically all-welded structure. Korea is responsible for the procurement of sector 1 and 6 of the main vessel. Accordingly, the design review for the fabrication is in progress by ITER Korea and Hyundai Heavy Industries. Due to anticipated manufacturing problems such as the welding distortion, the design ofsome components of main vessel, IWS (In-Wall Shield) supporting rib and ELM (Edge Localized Mode) coil support, needs to be modified. To release the risk of welding distortion, the welding method called "bridge type" is suggested and the shape of weld joint is adjusted to secure the manufacturability of the issued components. The elastic and limit analyses with fatigue evaluation have been performed under the most critical loading condition to verify the structural integrity of modified design. Analysis results show that the proposed designs meet the design criteria of RCC-MR. The design deviation requests have been submitted to ITER Organization and ANB (Agreed Notified Body) for approval and their verification is currently in progress. ► A “bridge type” welding method was proposed for IWS rib and ELM coil supports. ► This method could reduce the welding distortion and increase the manufacturability. ► Structural integrity of proposed design was assessed for both P and S type damages. ► Results show that the proposed designs meet the design criteria of RCC-MR. A vacuum vessel is one of the core facilities of ITER (International Thermonuclear Experimental Reactor) and basically all-welded structure. Korea is responsible for the procurement of sector 1 and 6 of the main vessel. Accordingly, the design review for the fabrication is in progress by ITER Korea and Hyundai Heavy Industries. Due to anticipated manufacturing problems such as the welding distortion, the design of some components of main vessel, IWS (In-Wall Shield) supporting rib and ELM (Edge Localized Mode) coil support, needs to be modified. To release the risk of welding distortion, the welding method called “bridge type” is suggested and the shape of weld joint is adjusted to secure the manufacturability of the issued components. The elastic and limit analyses with fatigue evaluation have been performed under the most critical loading condition to verify the structural integrity of modified design. Analysis results show that the proposed designs meet the design criteria of RCC-MR. The design deviation requests have been submitted to ITER Organization and ANB (Agreed Notified Body) for approval and their verification is currently in progress. |
Author | Kim, Byung-Chul Hong, Yun-Seok Jung, Yung-Jin Lee, Young-Ju Kim, Yu-Gyeong Ahn, Hee-Jae Kwon, Tae-Hoon |
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References | Jun, Martinez, Calcagno, Pascal (bib0015) 2009 Structural analyses of In-Wall Shielding lateral Ferromagnetic block Upper bracket 240 mm, IDM_D_3ZR3S6 v1.0, 2010. IVC Rail Reaction Loads, 4BJG7M v1.0, 2011. Giraud (bib0040) 2009 RCC-MR, Section 1 – Subsection B: Class 1 Components, Edition, 2007. Wang, Terasawa (bib0020) 2009 Tailhardat (bib0030) 2012 10.1016/j.fusengdes.2013.01.042_bib0005 Wang (10.1016/j.fusengdes.2013.01.042_bib0020) 2009 10.1016/j.fusengdes.2013.01.042_bib0025 Giraud (10.1016/j.fusengdes.2013.01.042_bib0040) 2009 Tailhardat (10.1016/j.fusengdes.2013.01.042_bib0030) 2012 10.1016/j.fusengdes.2013.01.042_bib0035 Jun (10.1016/j.fusengdes.2013.01.042_bib0015) 2009 |
References_xml | – year: 2012 ident: bib0030 article-title: Force Distribution Between Brackets of IWS FM Block Row35 contributor: fullname: Tailhardat – year: 2009 ident: bib0020 article-title: Load Specification of In-Wall Shielding of ITER Vacuum Vessel contributor: fullname: Terasawa – year: 2009 ident: bib0015 article-title: Stress Report of Vacuum Vessel and Ports contributor: fullname: Pascal – year: 2009 ident: bib0040 article-title: ITER DDD 1.5 Vacuum Vessel contributor: fullname: Giraud – year: 2012 ident: 10.1016/j.fusengdes.2013.01.042_bib0030 contributor: fullname: Tailhardat – year: 2009 ident: 10.1016/j.fusengdes.2013.01.042_bib0020 contributor: fullname: Wang – year: 2009 ident: 10.1016/j.fusengdes.2013.01.042_bib0015 contributor: fullname: Jun – ident: 10.1016/j.fusengdes.2013.01.042_bib0005 – ident: 10.1016/j.fusengdes.2013.01.042_bib0035 – year: 2009 ident: 10.1016/j.fusengdes.2013.01.042_bib0040 contributor: fullname: Giraud – ident: 10.1016/j.fusengdes.2013.01.042_bib0025 |
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Snippet | ► A “bridge type” welding method was proposed for IWS rib and ELM coil supports. ► This method could reduce the welding distortion and increase the... A vacuum vessel is one of the core facilities of ITER (International Thermonuclear Experimental Reactor) and basically all-welded structure. Korea is... |
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SubjectTerms | Coiling Design engineering Deviation Distortion Elm ELM coil support ITER IWS supporting rib Manufacturability Structural analysis Vessels Welding |
Title | Design assessment for manufacturability of supporting structures for IWS and ELM coil of ITER vacuum vessel |
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