Sidelined Issues in the Current Framework of the Nuclear ...25 N Ê $Î7Á d b!F £ s8j0Û o ö = @...
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25 淀 淀敕本æ鴈脉昨涖樅痣壚は燈嫻╪歳艤彩傘ゼ巠 Sidelined Issues in the Current Framework of the Nuclear Power Plant Safety Rules for Volcanic Risk Evaluation 闌琢 張 1 1⅕戻⑼暑彳旄彳旄㾱X旄€お㾱榻榧坿涖樅€おヌ印止執祉実 Makoto Murakami 1 1⅕Institute of Seismology and Volcanology, Hokkaido University Abstract The nuclear disaster at Fukushima in 2011 gave rise to a large scale reformation of entire framework of Japanese nuclear plant safety rules and regulations. Being part of this total restructuring of nuclear plant safety rulings, a regulatory suite to take care of the volcanic risks on plants was newly compiled and put into operation. This was the first time that such regulations dealing with volcanic risk on nuclear plants were enacted in Japan. Although it is a certain progress that a fair treatment for volcanic risks is authorized, the new regulatory suite still leaves some important issues sidelined. Among those, this article pays particular attentions to necessities of fare treatment of floating pumice raft posing threats on cooling water intake system and of introduction of probabilistic risk assessment (PRA) methodology into volcanic risk evaluation. Key Words: Nuclear Power Plant Risk Assessment, Volcanic hazard, Probabilistic Risk Assessment (PRA), Pumice Raft 姿実宍実詩Ź淀敕本æ鴈脉晧廟は燈⅕涖樅渼朿⅕:òプɚ式旨屍は燈⅕ヹ㍿Ëú ǖḿ朔載薩削 2011 烝 3 鏤削æブ裁冴陬戻坿跏徂烋♤㌘坿θM9χ昨甓琩作坿湊碕㎆窗朔⅕陬戻坿跏昨 札作晒剤⅕撒歳嚔昨熏哉3噬削倣署裁⅕林坿削パ彳作◇朿燦諾彩冴ḿ甓湊碕㎆窗削皿傘`蘢 ɚ作私磁実施坂砕埼雑⅕嚔朸昨嫻U燦蝗傘歳裁栽搾作哉サ⑪埼再榊冴歳⅕㎆窗朔⅕徂烋♤餐櫟 削こ1細参崎哉冴淀敕本æ鴈脉削雑逗骨碕艸裁杼在⅕Ⅷ湊嘆埼再榊冴陬庁鴈本0歹0瀧淀敕本 æ鴈脉昨貉坿不削肴哉削筒評裁崎⅕坿湊削朔⁴妻載崎u彩冴搨皀㎏1燦鬳┺細在⅕鏘0ɚ削 北海道地区自然災害科学資料センター報告 Vol.32, 25-36, 2019
Transcript of Sidelined Issues in the Current Framework of the Nuclear ...25 N Ê $Î7Á d b!F £ s8j0Û o ö = @...
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Sidelined Issues in the Current Framework of the Nuclear Power
Plant Safety Rules for Volcanic Risk Evaluation
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Makoto Murakami1
1 Institute of Seismology and Volcanology, Hokkaido University
Abstract
The nuclear disaster at Fukushima in 2011 gave rise to a large scale reformation of entire framework
of Japanese nuclear plant safety rules and regulations. Being part of this total restructuring of
nuclear plant safety rulings, a regulatory suite to take care of the volcanic risks on plants was newly
compiled and put into operation. This was the first time that such regulations dealing with volcanic
risk on nuclear plants were enacted in Japan. Although it is a certain progress that a fair treatment
for volcanic risks is authorized, the new regulatory suite still leaves some important issues sidelined.
Among those, this article pays particular attentions to necessities of fare treatment of floating pumice
raft posing threats on cooling water intake system and of introduction of probabilistic risk
assessment (PRA) methodology into volcanic risk evaluation.
Key Words: Nuclear Power Plant Risk Assessment, Volcanic hazard, Probabilistic Risk
Assessment (PRA), Pumice Raft
2011 3 M9
北海道地区自然災害科学資料センター報告Vol.32, 25-36, 2019
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