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contributor authorOno, Masato
contributor authorIigaki, Kazuhiko
contributor authorSawahata, Hiroaki
contributor authorShimazaki, Yosuke
contributor authorShimizu, Atsushi
contributor authorInoi, Hiroyuki
contributor authorKondo, Toshinari
contributor authorKojima, Keidai
contributor authorTakada, Shoji
contributor authorSawa, Kazuhiro
date accessioned2019-02-28T11:05:35Z
date available2019-02-28T11:05:35Z
date copyright3/5/2018 12:00:00 AM
date issued2018
identifier issn2332-8983
identifier otherners_004_02_020906.pdf
identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4252594
description abstractOn Mar. 11, 2011, the 2011 off the Pacific coast of Tohoku Earthquake of magnitude 9.0 occurred. When the great earthquake occurred, the high temperature engineering test reactor (HTTR) had been stopped under the periodic inspection and maintenance of equipment and instruments. A comprehensive integrity evaluation was carried out for the HTTR facility because the maximum seismic acceleration observed at the HTTR exceeded the maximum value of design basis earthquake. The concept of comprehensive integrity evaluation is divided into two parts. One is the “visual inspection of equipment and instruments.” The other is the “seismic response analysis” for the building structure, equipment and instruments using the observed earthquake. All equipment and instruments related to operation were inspected in the basic inspection. The integrity of the facilities was confirmed by comparing the inspection results or the numerical results with their evaluation criteria. As the results of inspection of equipment and instruments associated with the seismic response analysis, it was judged that there was no problem for operation of the reactor, because there was no damage and performance deterioration. The integrity of HTTR was also supported by the several operations without reactor power in cold conditions of HTTR in 2011, 2013, and 2015. Additionally, the integrity of control rod guide blocks was also confirmed visually when three control rod guide blocks and six replaceable reflector blocks were taken out from reactor core in order to change neutron startup sources in 2015.
publisherThe American Society of Mechanical Engineers (ASME)
titleComprehensive Seismic Evaluation of HTTR Against the 2011 Off the Pacific Coast of Tohoku Earthquake
typeJournal Paper
journal volume4
journal issue2
journal titleJournal of Nuclear Engineering and Radiation Science
identifier doi10.1115/1.4039288
journal fristpage20906
journal lastpage020906-8
treeJournal of Nuclear Engineering and Radiation Science:;2018:;volume( 004 ):;issue: 002
contenttypeFulltext


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