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Development of a sustainable decision framework for the implementation of end-of-life (EoL) options for the railcar industry
Environment, Development and Sustainability ( IF 4.9 ) Pub Date : 2020-10-16 , DOI: 10.1007/s10668-020-01035-y
Humbulani Simon Phuluwa , Ilesanmi Daniyan , Khumbulani Mpofu

The concept of sustainability and circular economy is crucial in the recovery of products that have reached the end-of-life (EoL). However, lack of a suitable framework for the recovery products at their EoL in the rail industry is a constraint in achieving a sustainable circular economy. There has been a growing concern about the environmental impact caused by railcar components that have reached their end-of-life. Hence, this study provides a sustainable decision framework for the selection and implementation of the EoL options for railcar components. Using the railcar bogie as a case study, the EoL recovery processes identified, namely refurbishment, reuse, recycling, and remanufacturing were incorporated into the decision model. The recovery rate of the steel material employed for the development of the bogie transom, bogie gear box and bogie motor were obtained as 95%, 96% and 98%, respectively, while aluminum material for the development of the brake cylinder also boast of high rate recovery (90%) at the end of its life cycle. Furthermore, the mathematical models for the estimation of the cost relating to the identified EoL options were developed in order to project the cost-effectiveness and the profitability of the EoL identified options. The cost implications of the EoL options as well as the projected profit from the cost models were estimated. Recommendations were also made to increase the level of awareness of the circular economy in order to promote economic, environmental sustainability and safe guide public health. It is envisaged that the findings of this work will assist railcar manufacturers, and operators to achieve sustainability in terms of material, energy, economic, social, and environment during the life cycle of a railcar.

中文翻译:

为轨道车行业的报废 (EoL) 选项的实施制定可持续的决策框架

可持续性和循环经济的概念对于已达到使用寿命 (EoL) 的产品的回收至关重要。然而,铁路行业 EoL 的回收产品缺乏合适的框架是实现可持续循环经济的一个制约因素。人们越来越关注已达到使用寿命的轨道车部件对环境的影响。因此,本研究为轨道车部件 EoL 选项的选择和实施提供了可持续的决策框架。使用轨道车转向架作为案例研究,确定的 EoL 恢复过程,即翻新、再利用、回收和再制造被纳入决策模型。用于开发转向架横梁的钢材的回收率,转向架齿轮箱和转向架电机分别获得95%、96%和98%,而用于开发制动缸的铝材料在其生命周期结束时也具有高回收率(90%)。此外,开发了用于估算与已确定的 EoL 选项相关的成本的数学模型,以预测已确定的 EoL 选项的成本效益和盈利能力。对 EoL 选项的成本影响以及成本模型的预计利润进行了估计。还提出了提高循环经济意识水平的建议,以促进经济、环境可持续性和安全引导公众健康。预计这项工作的结果将有助于轨道车制造商,
更新日期:2020-10-16
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