Summary and Conclusions of the Full Life-Cycle of the WindFloat FOWT Prototype Project

2017 ◽  
Author(s):  
Dominique Roddier ◽  
Christian Cermelli ◽  
Alexia Aubault ◽  
Antoine Peiffer
Keyword(s):  
Life Cycle ◽  
Lessons Learned ◽  
Horizontal Axis ◽  
Electricity Production ◽  
Full Life Cycle ◽  
Northern Portugal ◽  
Full Life ◽  
The Impact

The WindFloat prototype is a semisubmersible type foundation supporting a 2 MW, 3 bladed, horizontal axis Vestas V-80 turbine. The 8-year project is near its completion. After 3 years of planning, engineering and fabrication, the prototype was installed in 2011 in the northern Portugal Atlantic waters. Following 5 years of operations and electricity production, the unit was decommissioned in the summer of 2016. This paper retraces the prototype project going back to the early objectives, focusing on its 5-year performance and lessons learned. The overall assessment of the impact of the prototype on the incoming pre-commercial projects is discussed. Some emphasis is placed on both the decommissioning of the unit and the economics of the project, as these have not yet been published.

Transformer Selection Research Based on Blind Number Theory

2014 ◽  
Vol 521 ◽  
pp. 159-162
Author(s):  
Xue Bing Zheng ◽  
Ran Li
Keyword(s):  
Life Cycle ◽  
Life Cycle Cost ◽  
Reference Value ◽  
Full Life Cycle ◽  
Power Company ◽  
Long Time ◽  
Blind Number ◽  
Full Life ◽  
Selection Research ◽  
The Impact

For a long time, the power company is always concerned about acquisition costs in power equipment selection and ignores the impact of operating costs on the selection decision. Thus, the selection model has a certain one-sidedness. In this paper, the life cycle costs theory is applied to the transformer selection, which consider transformer initial investment costs, operation and maintenance costs, technological overhaul costs, the cost of failure and scrap disposal costs in full life cycle more comprehensively. The result not only gives the transformer blind number expectations of full life cycle cost, but also can give the credibility of different costs interval and have a certain reference value.

scholarly journals Full life-cycle monitoring and earlier warning for bolt joint loosening using modified vibro-acoustic modulation

2022 ◽  
Vol 162 ◽  
pp. 108054
Author(s):  
Xiaoshu Qin ◽  
Chang Peng ◽  
Gaozheng Zhao ◽  
Zengye Ju ◽  
Shanshan Lv ◽  
...  
Keyword(s):  
Life Cycle ◽  
Full Life Cycle ◽  
Full Life ◽  
Acoustic Modulation ◽  
Cycle Monitoring

scholarly journals Are Renewables as Friendly to Humans as to the Environment?: A Social Life Cycle Assessment of Renewable Electricity

2019 ◽  
Vol 11 (5) ◽  
pp. 1370 ◽  
Author(s):  
Shutaro Takeda ◽  
Alexander Keeley ◽  
Shigeki Sakurai ◽  
Shunsuke Managi ◽  
Catherine Norris
Keyword(s):  
Life Cycle Assessment ◽  
Supply Chain ◽  
Life Cycle ◽  
Social Life ◽  
Electricity Production ◽  
Social Life Cycle Assessment ◽  
Solar Photovoltaic ◽  
Energy Technologies ◽  
Electricity Mix ◽  
The Impact

The adoption of renewable energy technologies in developing nations is recognized to have positive environmental impacts; however, what are their effects on the electricity supply chain workers? This article provides a quantitative analysis on this question through a relatively new framework called social life cycle assessment, taking Malaysia as a case example. Impact assessments by the authors show that electricity from renewables has greater adverse impacts on supply chain workers than the conventional electricity mix: Electricity production with biomass requires 127% longer labor hours per unit-electricity under the risk of human rights violations, while the solar photovoltaic requires 95% longer labor hours per unit-electricity. However, our assessment also indicates that renewables have less impacts per dollar-spent. In fact, the impact of solar photovoltaic would be 60% less than the conventional mix when it attains grid parity. The answer of “are renewables as friendly to humans as to the environment?” is “not-yet, but eventually.”

Study on Hazards Identification for the Life Cycle of Household Electric Blankets

2014 ◽  
Vol 968 ◽  
pp. 218-221
Author(s):  
Xia Liu ◽  
Hong Qi Luo ◽  
Rui Fu ◽  
He Liang Song
Keyword(s):  
Life Cycle ◽  
Health And Safety ◽  
Fault Tree Analysis ◽  
Hazard Identification ◽  
Quality And Safety ◽  
Effect Analysis ◽  
Structure Characteristics ◽  
Full Life Cycle ◽  
Working Principle ◽  
Full Life

Household electric blankets are widely used in China, but the problem of quality and safety is also more prominent, which is a serious threat to the health and safety of consumers. The structure characteristics and working principle of household electric blanket are analyzed. The hazards in the each stage of full life cycle are identified, including the stages of designing, manufacturing, packaging, transporting, utilizing and recycling. Hazard identification of each stage is made with methods of scenario analysis, safety check list, fault hypothesis analysis, hazard and operability analysis, failure mode and effect analysis and fault tree analysis, respectively.

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