Effectiveness of countermeasure options for chemical facilities against the discharge of chemical substances into rivers caused by a large earthquake: case study of the Yodo river system in Osaka prefecture, Japan

Hamamoto, Shogo; Tokai, Akihiro; Nakakubo, Toyohiko et al.

Environment Systems and Decisions, 2024, 44(4), 906-921

Number of Access:331（2025-08-30 01:10 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/97609

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Title
Effectiveness of countermeasure options for chemical facilities against the discharge of chemical substances into rivers caused by a large earthquake: case study of the Yodo river system in Osaka prefecture, Japan
Creator
CreatorName
Hamamoto, Shogo
NRID
1000090207522 1000090207522
researchmap permalink
7676 7676
Scopus Author ID
6506790328 6506790328
CreatorName
Tokai, Akihiro
NRID
1000070648766 1000070648766
ORCID
0000-0002-3048-2237 0000-0002-3048-2237
researchmap permalink
Nakakubo_Toyohiko Nakakubo_Toyohiko
CreatorName
Nakakubo, Toyohiko
CreatorName
Ito, Lisa
Subject
Chemical release
Countermeasure option
Drinking water system
Natech (Natural-hazard triggered technological accidents)
Risk assessment
Description
The version of record of this article, first published in Environment Systems and Decisions, is available online at Publisher’s website: https://doi.org/10.1007/s10669-024-09982-x.
Abstract
Technological accidents triggered by natural hazards, which are commonly referred to as Natech events, are rare occurrences yet carry the potential for significant damage. Specifically, the release of hazardous chemicals into the aquatic environment and community water systems poses a grave threat to human health and society. Accordingly, we must conduct assessments that consider the potential consequences of these accidents. In this study, we examined the criteria for implementing spill protection measures to mitigate river spills of chemical substances using information on the amount of chemical substances and their toxicity. The countermeasure options readily available to employees at industrial plants and chemical storage sites where a chemical spill might originate included emergency shut-off valves, bunds and related spill containment structures, and other spill prevention measures. In this case study, a combination of countermeasure options was evaluated to examine the effectiveness of spill mitigation in the Yodo River located in the Kyoto Prefecture of Japan. Results of the case study showed that bunds were emerged as the most useful countermeasure option, reducing the probability of accidents occurring and impact of accidents. We also defined a methodology for calculating the chemical storage volumes appropriate for different countermeasures to ensure that the concentration of chemicals that could reach the water intake does not exceed the standard values. We believe that these methodologies can help chemical-handling companies make decisions when countermeasure options for responding to a chemical spill into a river. Chemical-handling companies can estimate the risk to downstream water treatment plants in the chemical spill, which can also help them consider mitigation measures.
Publisher
Springer
Source Title
Environment Systems and Decisions
Volume (Issue)
44(4)
Page
906-921
Date of Issued
2024-06-22
Language
English
Handle URL
https://hdl.handle.net/11094/97609
PISSN
21945403
eISSN
21945411
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.1007/s10669-024-09982-x
Access Rights
open access
CopyRight
This article is licensed under a Creative Commons Attribution 4.0 International License.
oaire:version
Version of Record
Category
学術雑誌論文 Journal Article