Abstract
In the context of a severe accident at the Fukushima Daiichi Nuclear Power Station (NPS) operated by the Tokyo Electric Power Company (TEPCO) due to the 2011 off the Pacific coast of Tohoku Earthquake and Tsunami, Nuclear Regulation Authority (NRA) was established on September 19, 2012 under the relevant law. After that NRA organized a task force for studying new regulatory standards for nuclear power plants (NPPs) in consideration of lessons learned from the severe accident at Fukushima. In the task force open meeting, through discussing about design basis external natural events which should be considered in the new regulatory standards, tornado was newly introduced into new regulatory standards as an external natural event. Based on the decision that tornado was newly introduced into new regulatory standards, the Secretariat of the Nuclear Regulation Authority (SNRA) commissioned the Japan Nuclear Energy Safety Organization (JNES) to study an assessment guide for tornado effect on NPPs intended to be used for an official safety review for a NPP construction. JNES organized Sectional Committee for Tornado Effect Assessment Guide consisting of experts in meteorology and wind engineering fields, discussing about assessment methods for tornado effect on NPPs, draft version of the assessment guide for
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Inoue, Hiroto;
Fukunishi, Shiro;
Suzuki, Tetsuo
[1]
- Japan Nuclear Energy Safety Organization, Seismic Safety Department, Tokyo (Japan)
Citation Formats
Inoue, Hiroto, Fukunishi, Shiro, and Suzuki, Tetsuo.
Assessment guide for tornado effect on Nuclear Power Plants (draft) with its commentaries.
Japan: N. p.,
2013.
Web.
Inoue, Hiroto, Fukunishi, Shiro, & Suzuki, Tetsuo.
Assessment guide for tornado effect on Nuclear Power Plants (draft) with its commentaries.
Japan.
Inoue, Hiroto, Fukunishi, Shiro, and Suzuki, Tetsuo.
2013.
"Assessment guide for tornado effect on Nuclear Power Plants (draft) with its commentaries."
Japan.
@misc{etde_22318581,
title = {Assessment guide for tornado effect on Nuclear Power Plants (draft) with its commentaries}
author = {Inoue, Hiroto, Fukunishi, Shiro, and Suzuki, Tetsuo}
abstractNote = {In the context of a severe accident at the Fukushima Daiichi Nuclear Power Station (NPS) operated by the Tokyo Electric Power Company (TEPCO) due to the 2011 off the Pacific coast of Tohoku Earthquake and Tsunami, Nuclear Regulation Authority (NRA) was established on September 19, 2012 under the relevant law. After that NRA organized a task force for studying new regulatory standards for nuclear power plants (NPPs) in consideration of lessons learned from the severe accident at Fukushima. In the task force open meeting, through discussing about design basis external natural events which should be considered in the new regulatory standards, tornado was newly introduced into new regulatory standards as an external natural event. Based on the decision that tornado was newly introduced into new regulatory standards, the Secretariat of the Nuclear Regulation Authority (SNRA) commissioned the Japan Nuclear Energy Safety Organization (JNES) to study an assessment guide for tornado effect on NPPs intended to be used for an official safety review for a NPP construction. JNES organized Sectional Committee for Tornado Effect Assessment Guide consisting of experts in meteorology and wind engineering fields, discussing about assessment methods for tornado effect on NPPs, draft version of the assessment guide for tornado effect on NPPs was completed on April 4, 2013, and JNES submitted the draft guide to SNRA on the same date. After that NRA called for public comments for the draft version of the assessment guide, the draft version of the assessment guide was partly amended taking posted public comments account, and tornado effect assessment guide was officially released on June 19, 2013. Contents in this paper are as follows, assessment guide for tornado effect on NPPs (Draft version on April 4, 2013), supplementary documents, calculation examples, and future tasks for further improved reliability of tornado effect assessment on NPPs. This draft guide consists of six chapters in total, and the outlines of each chapter are as below. Objective and applicable scope of this guide (Chapter 1: General rule), facilities designed for tornado and fundamental design flow (Chapter 2: Fundamental principle of tornado design), basic rue for setting maximum tornado wind speed and characteristic values used in the design (Chapter 3: Setting of basis and design tornadoes), applicable methods for setting design loads based on the maximum tornado wind speed and characteristic values which are set in the Chapter 3 (Chapter 4: Facilities design), basic rule relative to study on events induced by tornado (eg. loss of offsite power) and minimum requirement studies which should be performed as a part of tornado effect assessment (Chapter 5: Studies on events induced by tornado), commitments when a new state-of-the-art knowledge will be obtained in the future, for example, maximum tornado wind speed beyond the one used in the design will be observed (Chapter 6: Additional clause), are respectively described in each of the chapters. (author)}
place = {Japan}
year = {2013}
month = {Oct}
}
title = {Assessment guide for tornado effect on Nuclear Power Plants (draft) with its commentaries}
author = {Inoue, Hiroto, Fukunishi, Shiro, and Suzuki, Tetsuo}
abstractNote = {In the context of a severe accident at the Fukushima Daiichi Nuclear Power Station (NPS) operated by the Tokyo Electric Power Company (TEPCO) due to the 2011 off the Pacific coast of Tohoku Earthquake and Tsunami, Nuclear Regulation Authority (NRA) was established on September 19, 2012 under the relevant law. After that NRA organized a task force for studying new regulatory standards for nuclear power plants (NPPs) in consideration of lessons learned from the severe accident at Fukushima. In the task force open meeting, through discussing about design basis external natural events which should be considered in the new regulatory standards, tornado was newly introduced into new regulatory standards as an external natural event. Based on the decision that tornado was newly introduced into new regulatory standards, the Secretariat of the Nuclear Regulation Authority (SNRA) commissioned the Japan Nuclear Energy Safety Organization (JNES) to study an assessment guide for tornado effect on NPPs intended to be used for an official safety review for a NPP construction. JNES organized Sectional Committee for Tornado Effect Assessment Guide consisting of experts in meteorology and wind engineering fields, discussing about assessment methods for tornado effect on NPPs, draft version of the assessment guide for tornado effect on NPPs was completed on April 4, 2013, and JNES submitted the draft guide to SNRA on the same date. After that NRA called for public comments for the draft version of the assessment guide, the draft version of the assessment guide was partly amended taking posted public comments account, and tornado effect assessment guide was officially released on June 19, 2013. Contents in this paper are as follows, assessment guide for tornado effect on NPPs (Draft version on April 4, 2013), supplementary documents, calculation examples, and future tasks for further improved reliability of tornado effect assessment on NPPs. This draft guide consists of six chapters in total, and the outlines of each chapter are as below. Objective and applicable scope of this guide (Chapter 1: General rule), facilities designed for tornado and fundamental design flow (Chapter 2: Fundamental principle of tornado design), basic rue for setting maximum tornado wind speed and characteristic values used in the design (Chapter 3: Setting of basis and design tornadoes), applicable methods for setting design loads based on the maximum tornado wind speed and characteristic values which are set in the Chapter 3 (Chapter 4: Facilities design), basic rule relative to study on events induced by tornado (eg. loss of offsite power) and minimum requirement studies which should be performed as a part of tornado effect assessment (Chapter 5: Studies on events induced by tornado), commitments when a new state-of-the-art knowledge will be obtained in the future, for example, maximum tornado wind speed beyond the one used in the design will be observed (Chapter 6: Additional clause), are respectively described in each of the chapters. (author)}
place = {Japan}
year = {2013}
month = {Oct}
}