METHODOLOGY FOR RISK ASSESSMENT OF FISH DEATH AT HYDROPOWER PLANTS

Relevance of the research is due to the fact that over the past 10 years severe accidents at large hydropower plants and dams occurred in Russia (SayanoShushenskaya HPP, 2009), USA (Oroville dam, 2018), Brazil (Brumadinho dike, 2019), Colombia (HPP Ituango, 2018) and other countries, the need has arisen to improve the safety programs of the HS and dams. The main method of this important work is to use methods of analysis and assessment of risk accidents of HS and dams. Methods of this important work are to develop modern methodology for analyzing and assessing the risk of accidents of HS and dams. The introduction of the method of analysis and risk assessment in the safety programs of hydraulic structures (dams) in countries that are advanced in the construction of HS (China, Brazil, Canada, USA, Russia, Colombia, Norway, Spain, etc.) shows that in applying risk assessment analysis accidents of HS and dams still a number of difficulties, but this approach is of great benefit in monitoring the safety of HS and dams. The aim of this article is to familiarize and train specialists and hydraulic engineers with modern methods for assessing the safety of HS and dams.

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GLOF Risk Assessment Model in the Himalayas: A Case Study of a Hydropower Project in the Upper Arun River

Water ◽

10.3390/w11091839 ◽

2019 ◽

Vol 11 (9) ◽

pp. 1839 ◽

Cited By ~ 1

Author(s):

Washakh ◽

Chen ◽

Wang ◽

Almas ◽

Ahmad ◽

...

Keyword(s):

Risk Assessment ◽

Subject Area ◽

Assessment Model ◽

Glacial Lakes ◽

Hydroelectric Project ◽

Temperature And Precipitation ◽

Hydropower Plants ◽

Tremendous Amount ◽

Glacial Lake Outburst Flood ◽

Data Collections

A glacial lake outburst flood (GLOF) is a phenomenon that is widely known by researchers because such an event can wreak havoc on the natural environment as well as on manmade infrastructure. Therefore, a GLOF risk assessment is necessary, especially within river basins with hydropower plants, and may lead to a tremendous amount of socioeconomic loss if not done. However, due to the subjective and objective limitations of the available GLOF risk assessment methods, we have proposed a new and easily applied method with a wider application and without the need for adaptation changes in accordance with the subject area, which also allows for the repeated use of this model. In this study, we focused our efforts on the Upper Arun Hydroelectric Project (UAHEP) in the Arun River Basin, and we (1) identified 49 glacial lakes with areas greater than 0.1 km2; (2) geographically represented and analyzed these 49 glacial lakes for the period of 1990–2018; (3) analyzed the correlation between the temperature and precipitation trends and the occurrence of recorded GLOF events in the region; (4) proposed a new method based on the documented affected lengths and volumes derived from historical GLOF events to identify 4 potentially critical lakes; and (5) evaluated the discharge profiles using widely used empirical methods and further discussed the physical properties, triggering factors, and outburst probability of the critical lakes. To achieve these objectives, a series of intensive and integrated desk studies, data collections, and GLOF simulations and analyses were performed.

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Creating a climate change risk assessment procedure: Hydropower plant case, Finland

Hydrology Research ◽

10.2166/nh.2010.123 ◽

2010 ◽

Vol 41 (3-4) ◽

pp. 282-294 ◽

Cited By ~ 6

Author(s):

Riitta Molarius ◽

Jaana Keränen ◽

Jari Schabel ◽

Nina Wessberg

Keyword(s):

Climate Change ◽

Risk Assessment ◽

Practical Method ◽

Risk Identification ◽

Hydropower Plant ◽

Research Centre ◽

Assessment Procedure ◽

Hydropower Plants ◽

Support Tools ◽

Hydropower Production

This paper examines the risk assessment procedure for a Nordic hydropower production process while taking climate change into account. It is evident that climate change poses new risks and concerns for hydropower companies, especially with regards to the high uncertainty that results from the ignorance of relationships between climate change and hydropower production (descriptive uncertainty). However, climate change may also provide opportunities. This paper focuses on the development of a risk assessment procedure to support the risk identification process as a means of reducing the descriptive uncertainty. The intention of the study was to develop and test a procedure in which climate scenarios and traditional technical risk assessment have been integrated. This allows us to obtain a practical method as well as associated support tools for identifying and evaluating climate change-related risks and opportunities for hydropower plants. This new procedure is intended to help hydropower plants plan their future investments and strategies by identifying and prioritizing the risks caused and opportunities created by climate change. The study was conducted as a part of the Nordic Energy Research funded Climate and Energy Systems (CES) project and was coordinated by VTT Technical Research Centre of Finland.

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