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Predecessor
Volume 51, Issue 1
Displaying 1-4 of 4 articles from this issue
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Review
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Shinsaku ZAMA, Ken HATAYAMA, Haruki NISHI, Minoru YAMADA2013 Volume 51 Issue 1 Pages 4-10
Published: January 25, 2013
Released on J-STAGE: July 15, 2013
JOURNAL FREE ACCESSThe 2011 off the Pacific coast of Tohoku Earthquake (Mw9. 0) occurred on 11 March2011 caused various damage to oil storage tanks in wide area. At Sakata, Niigata, Kashima and Tokyo Bay area, we found damage due to the liquid sloshing excited by the long-period ground motions such as sinking of floating roofs, failure of pontoons, deformation of gauge poles, leakage of oil onto the floating decks, and so on. Many strong motion records were obtained in and around tank sites and their velocity response spectra Sv in the long-period range hardly exceed the regulation in the Fire Service Law at all. Therefore, the floating roofs reinforced in compliance with the technical standard of the Fire Service Law revised in consideration of the damage in the 2003 Tokachi-oki earthquake suffered no severe damage. On the other hand, unreinforced floating roof of a tank located in the Tokyo Bay area sank after 3 days of the event because of the failure of pontoons by the liquid sloshing, although Sv near the tank is not more than 100cm⁄s in the previous regulation.View full abstractDownload PDF (1011K) -
Haruki Nishi2013 Volume 51 Issue 1 Pages 11-18
Published: January 25, 2013
Released on J-STAGE: July 15, 2013
JOURNAL FREE ACCESSThe 2011 off the Pacific coast of Tohoku Earthquake occurred on March 11, 2011 and shook Miyagi Prefecture with a strong earthquake of magnitude 7 (Japanese scale) . A vast range over an east part of Japan suffered damage by a strong ground motion, moreover wide range of the pacific coast of Tohoku area suffered damage by Tsunami. The earthquake caused damage to hazardous material facilities in petrochemical industrial complex. For example, some of them caught fire after the earthquake and large amount of oil leaked from oil storage tanks. National Research Institute of Fire and Disaster have investigated damage including the fires and failures of the hazmat facilities.
In this paper, the author reports the outline of the result of the investigation. The damage of the hazmat facilities has a different aspect by area. The oil storage tanks and other hazmat facilities damaged mainly by the Tsunami on the pacific coast and the strong ground motion caused the liquefaction of the foundation ground. On the coast of the Sea of Japan, the earthquake generated sloshing of liquid in large oil storage tanks and caused oil spill on the floating roofs and caused damage to the pontoon of the floating roofs. Moreover, on the shore of the Bay of Tokyo, one of the floating roofs sank after the earthquake because the deck of the floating roof cracked during the earthquake and lost buoyancy.View full abstractDownload PDF (1335K) -
Kenichiro SHIMOSAKO2013 Volume 51 Issue 1 Pages 19-25
Published: January 25, 2013
Released on J-STAGE: July 15, 2013
JOURNAL FREE ACCESSThe Great East Japan Earthquake generated a huge tsunami and caused devastating disasters in the coastal towns facing the Pacific Ocean. The tsunami attacked all the Pacific coasts in Japan impacting the coastal towns from Hokkaido to Chiba Prefecture. Especially devastating disasters occurred in Iwate, Miyagi, and Fukushima Prefectures.
In this report the tsunami heights along the coasts are estimated using measured offshore GPS data and the damage of breakwaters in Hachinohe, Kamaishi and Souma port are described. Preparedness for the worst case is discussed as an important lesson we learned from the disaster.View full abstractDownload PDF (2611K) -
Hirohisa NAGAI2013 Volume 51 Issue 1 Pages 26-29
Published: January 25, 2013
Released on J-STAGE: July 15, 2013
JOURNAL FREE ACCESSJX Nippon Oil & Energy Corporation, Sendai refinery (Miyagi prefecture) was affected by an earthquake and the tsunami by the outbreak of the East Japan great earthquake disaster and suffered serious damage and had a serious influence on the supply chain of oil products. We performed various actions and made an effort in order to achieve a social duty called the steady supply of oil products. As a result, a prospect was in sight for restoration from earthquake disaster damage by the Sendai refinery operation reopening of this March last.
About the urgent correspondence as us after the earthquake disaster, the suffering situation, an action to revival, I introduce below the summary mainly on the situation of the Sendai refinery.View full abstractDownload PDF (627K)
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