Chu-Ketterer Lucinda-Joi, Murray Regan, Hassett Patrick, Kogan Josh, Klise Katherine, Haxton Terranna
ORISE Fellow at United States Environmental Protection Agency, Oak Ridge Institute of Science and Education, 26 West Martin Luther King Dr., Cincinnati, OH 45268.
Division Director, United States Environmental Protection Agency, Office of Research and Development, 26 W. Martin Luther King Dr., Cincinnati, OH 45268.
J Water Resour Plan Manag. 2022 Nov;149(1). doi: 10.1061/jwrmd5.wreng-5631.
Drinking water utilities are vulnerable to both human-caused and natural disasters that can impact the system infrastructure and the delivery of potable water to consumers. Analyzing system performance and resilience can help utilities identify areas of high risk or concern, understand the impacts on consumers, and evaluate response actions during disasters. In this case study, the Water Network Tool for Resilience (WNTR) was used to investigate the performance and resilience of a drinking water system in New York during increased demands due to firefighting, pipe damage, and loss of the source water emergencies. This case study introduced a new combined performance index (CPI) resilience metric, which served to quantify system resilience as a ratio of system performance during an emergency to normal operations. The results revealed that this drinking water system was able to maintain service to most of the consumers during these emergencies due to high redundancy within the system, and conservation efforts extended water service for an additional 20 h. The analysis in this paper can be used by other drinking water utilities to understand their vulnerabilities and evaluate resilience-improving actions in similar disaster scenarios.
饮用水公用事业易受人为和自然灾害影响，这些灾害会对系统基础设施以及向消费者提供的饮用水产生影响。分析系统性能和恢复力有助于公用事业识别高风险或受关注的领域，了解对消费者的影响，并评估灾害期间的应对行动。在本案例研究中，使用了韧性水网工具（WNTR）来调查纽约市一个饮用水系统在因消防、管道损坏和原水紧急情况导致需求增加期间的性能和恢复力。本案例研究引入了一种新的综合性能指数（CPI）韧性指标，该指标用于将系统韧性量化为紧急情况下系统性能与正常运行时系统性能的比率。结果表明，由于系统内的高冗余性，该饮用水系统在这些紧急情况下能够为大多数消费者维持供水，并且节水措施使供水服务又延长了20小时。本文的分析可供其他饮用水公用事业用于了解自身脆弱性，并评估在类似灾害场景中提高恢复力的行动。
