A safety evaluation of HTTR core graphite structures against the great east japan earthquake

On March 11th, 2011, the Great East Japan Earthquake which is one of the largest earthquakes in japan occurred and the maximum acceleration in observed seismic wave in the HTTR exceeded the design value in a part of input seismic motions. Therefore, a visual inspection, a seismic analysis and a perf...

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Autores principales:	Kazuhiko IIGAKI, Masato ONO, Yosuke SHIMAZAKI, Daisuke TOCHIO, Atsushi SHIMIZU, Hiroyuki INOI, Shoji TAKADA, Kazuhiro SAWA
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2014
Materias:	httr htgr seismic earthquake analysis evaluation Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/b3394bc12cce46b8b903b6662128073c
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spelling	oai:doaj.org-article:b3394bc12cce46b8b903b6662128073c2021-11-26T06:09:52ZA safety evaluation of HTTR core graphite structures against the great east japan earthquake2187-974510.1299/mej.2014tep0021https://doaj.org/article/b3394bc12cce46b8b903b6662128073c2014-08-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/1/4/1_2014tep0021/_pdf/-char/enhttps://doaj.org/toc/2187-9745On March 11th, 2011, the Great East Japan Earthquake which is one of the largest earthquakes in japan occurred and the maximum acceleration in observed seismic wave in the HTTR exceeded the design value in a part of input seismic motions. Therefore, a visual inspection, a seismic analysis and a performance confirmation test of facilities were carried out in order to confirm the integrity of facility after the earthquake. The seismic analysis was carried out for the reactor core structures by using the response magnification factor method. As the results of the evaluation, the generated stress in the graphite blocks in the reactor core at the earthquake were well below the allowable values of safety criteria, and thus the structural integrity of the reactor core was confirmed. The integrity of reactor core was also supported by the visual inspections of facilities and the operation without reactor power in cold conditions of HTTR.Kazuhiko IIGAKIMasato ONOYosuke SHIMAZAKIDaisuke TOCHIOAtsushi SHIMIZUHiroyuki INOIShoji TAKADAKazuhiro SAWAThe Japan Society of Mechanical EngineersarticlehttrhtgrseismicearthquakeanalysisevaluationMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 1, Iss 4, Pp TEP0021-TEP0021 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	httr htgr seismic earthquake analysis evaluation Mechanical engineering and machinery TJ1-1570
spellingShingle	httr htgr seismic earthquake analysis evaluation Mechanical engineering and machinery TJ1-1570 Kazuhiko IIGAKI Masato ONO Yosuke SHIMAZAKI Daisuke TOCHIO Atsushi SHIMIZU Hiroyuki INOI Shoji TAKADA Kazuhiro SAWA A safety evaluation of HTTR core graphite structures against the great east japan earthquake
description	On March 11th, 2011, the Great East Japan Earthquake which is one of the largest earthquakes in japan occurred and the maximum acceleration in observed seismic wave in the HTTR exceeded the design value in a part of input seismic motions. Therefore, a visual inspection, a seismic analysis and a performance confirmation test of facilities were carried out in order to confirm the integrity of facility after the earthquake. The seismic analysis was carried out for the reactor core structures by using the response magnification factor method. As the results of the evaluation, the generated stress in the graphite blocks in the reactor core at the earthquake were well below the allowable values of safety criteria, and thus the structural integrity of the reactor core was confirmed. The integrity of reactor core was also supported by the visual inspections of facilities and the operation without reactor power in cold conditions of HTTR.
format	article
author	Kazuhiko IIGAKI Masato ONO Yosuke SHIMAZAKI Daisuke TOCHIO Atsushi SHIMIZU Hiroyuki INOI Shoji TAKADA Kazuhiro SAWA
author_facet	Kazuhiko IIGAKI Masato ONO Yosuke SHIMAZAKI Daisuke TOCHIO Atsushi SHIMIZU Hiroyuki INOI Shoji TAKADA Kazuhiro SAWA
author_sort	Kazuhiko IIGAKI
title	A safety evaluation of HTTR core graphite structures against the great east japan earthquake
title_short	A safety evaluation of HTTR core graphite structures against the great east japan earthquake
title_full	A safety evaluation of HTTR core graphite structures against the great east japan earthquake
title_fullStr	A safety evaluation of HTTR core graphite structures against the great east japan earthquake
title_full_unstemmed	A safety evaluation of HTTR core graphite structures against the great east japan earthquake
title_sort	safety evaluation of httr core graphite structures against the great east japan earthquake
publisher	The Japan Society of Mechanical Engineers
publishDate	2014
url	https://doaj.org/article/b3394bc12cce46b8b903b6662128073c
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A safety evaluation of HTTR core graphite structures against the great east japan earthquake

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