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Life cycle assessment (LCA) is sometimes referred to synonymously as life cycle analysis in the scholarly and agency report literatures. [7] [1] [8] Also, due to the general nature of an LCA study of examining the life cycle impacts from raw material extraction (cradle) through disposal (grave), it is sometimes referred to as "cradle-to-grave analysis".
Larger dams, such as the Hoover Dam and the Three Gorges Dam, are intended to last "forever" with the aid of maintenance, a period that is not quantified. [27] Therefore, decommissioning estimates are generally omitted for some energy sources, while other energy sources include a decommissioning phase in their assessments.
The GREET model is specified in the Inflation Reduction Act of 2022 §45V [2] as the methodology to calculate the life cycle greenhouse gas emissions "through the point of production (well-to-gate)" when determining the level of tax credit for clean Hydrogen production until a successor is approved by the Secretary of the Treasury. The final ...
Criteria contained in a PCR includes: a description of the product category, the goal of the LCA, functional units, system boundaries, cut-off criteria, allocation rules, environmental impact categories, information on the product's use phase, required units, LCA calculation procedures, requirements for data quality assessment, and other ...
Life cycle engineering is defined in the CIRP Encyclopedia of Production Engineering as: "the engineering activities which include the application of technological and scientific principles to manufacturing products with the goal of protecting the environment, conserving resources, encouraging economic progress, keeping in mind social concerns, and the need for sustainability, while optimizing ...
The term box model may refer to: Box modeling, in computer graphics; Climate box models, in Earth sciences; Gravity current box models, in fluid mechanics;
The current (2002) model is based upon the Department of Commerce's 428 sector industry input-output model of the US economy. In 2018, VitalMetrics Group, an environmental consultancy, developed a web-based Spend Analysis Tool [ 3 ] for quantifying the environmental impacts associated with an organization’s entire upstream supply chain.
In a 3 phase circuit all current carrying conductors must be sensed. In modern literature the term ELCB is sometimes incorrectly used to specifically refer to VO-ELCBs, while almost never used to refer to current sensing devices, which are almost exclusively referred to instead by terms such as RCD, RCCB and GFCI.
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