Sakaki K.,Kobe City Waterworks Bureau |
Matsuda Y.,Kobe City Waterworks Bureau |
Hirayama N.,Japan National Institute of Environmental Studies |
Itoh S.,Kyoto University
Journal of Water Supply: Research and Technology - AQUA | Year: 2014
In Japan, the 'earthquake-resistant pipe ratio' and the 'amount of stored water for emergency' have been used to evaluate the anti-earthquake performance of water supply facilities. In the past, however, those evaluations were made mainly from the viewpoint of the supplier, and evaluations from the customer's (citizen's) viewpoint have been insufficient. For simpler explanations to customers, the evaluation model based on 'living conditions,' related to emergency water use in the restoration period, has been established and a verification study has been conducted using an analysis model for evaluating the effect of various seismic upgrade measures adopted in Kobe City. Verification results show that the seismic improvement measures would produce a shorter restoration period compared with the time for the 1995 Great Hanshin-Awaji earthquake and that a greater amount of water would be available in the restoration period, leading to wider and more frequent use of water by citizens. © IWA Publishing 2014.
Hashigami S.,Kobe City Waterworks Bureau |
Matsushita M.,Kobe City Waterworks Bureau |
Kumaki Y.,Kobe City Waterworks Bureau
Journal of Water Supply: Research and Technology - AQUA | Year: 2010
Distribution pipelines now require a lot of maintenance and mass renewal. We need to determine measures to maintain water quality and to carry out reconstruction of the pipeline system. In addition, the mass retirement of engineers also provides us with a serious challenge on how to transfer their knowledge and skill. In 2008 Kobe City established Kobe Waterworks Vision 2017, in which plans have been set out to realize 'safety', 'relief', 'sustainability' and so on. In order to realize the vision in the field of distribution pipelines, pipe-network reconstruction and the Manual for Water Safety Control in Distribution Network are the key practices to achieve the highest level of pipe-network management. In this paper, we present the outline and application example of these practices. © IWA Publishing 2010.