Model Analysis of Business Continuity Planning for Environment Load and Natural Disaster Reduction: With a Focus on Rainwater Harvesting

  • KOTANI Hitomu
    Graduate School of Engineering, Kyoto University
  • KAJITANI Yoshio
    Civil Engineering Research Laboratory, Central Research Institute of Electric Power Industry
  • OKADA Norio
    Institute for the Research of Disaster Area Reconstruction, Kwansei Gakuin University

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Other Title
  • 環境負荷軽減と災害被害軽減を両立する企業の事業継続計画手法(BCP)に関するモデル分析:雨水利用を対象として
  • カンキョウ フカ ケイゲン ト サイガイ ヒガイ ケイゲン オ リョウリツ スル キギョウ ノ ジギョウ ケイゾク ケイカク シュホウ(BCP)ニ カンスル モデル ブンセキ : アメ ミズリヨウ オ タイショウ ト シテ

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Abstract

 Business Continuity Planning (BCP) holds great potential not only for reducing damage to a company from disasters but also for reducing damage to a community and reducing the environment load. This study specifically examines rainwater harvesting as part of a BCP model considering both environment load reduction (water saving effect) and natural disaster mitigation (water storage effect). First, particularly addressing an existing company, we summarize evaluation methods for each benefit and cost by introducing rainwater harvesting. Then, we formulate a decision-making model for the tank size that maximizes net present value. Furthermore, we implement a case study under realistic conditions set by the observed dataset such as the size of the company office building, the amount of evaporation from the biotope, and past AMeDAS rainfall data. The optimal tank size associated with the annual dispersion of cash flows is ascertained for the judgment of business feasibility. Results provide information related to the potential of the approach, suggesting better methodologies. The results are also available as an example for consideration of the development for District Continuity Planning (DCP) and other BCP models.

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