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Brasil

PackTrends

2020

185

sustainability & ethics

The LCA studies are formed by four main phases, described below:

1

st

Phase

At the first phase, called

goal and scope definition

, the productive system phases that will take

part of the study are defined in function of the objectives to be reached, delimiting the systems

boundaries. At this phase, which is extremely important, the level of detail and depth that the

study should have to answer the question involved are defined.

The intended audience, i.e. to whom the results of the study are intended to be communicated

should also be defined at this phase, once it is related to the details of the project. As the study

is structured for understanding of the environmental interface of a product or service with the

nature, a functional unity must be adopted, whereby all the productive phases can be correlated.

Mass is one of the most used functional unities, but unities such as transported volume, traveled

kilometers, painted wall area and produced energy, among others, are also used.

2

nd

Phase

The second phase, called

inventory analysis

, corresponds to data collection and calculation to

identify the most relevant input and outputs of the system. The data collection involves the

quantification of the amounts of raw materials, processing aids, energy and water related products

and co-products of all the steps involved within the boundaries of the study. Water and atmospheric

emissions are also determined, as well as the solid residues. Validation of primary data and

analysis of the consistency of the compilation of the aggregate data must be done in this phase.

3

rd

Phase

The third phase, called

impact assessment

, it is targeted to associate inventory data, previously

collected with potential environmental impacts, generally separated by categories such as the use

of fossil or renewable energy, greenhouse effect or global warming, acidification, natural resources

consumption, eutrophication, human toxicity and potential for Photochemical ozone creation,

among others. At this phase, the inventory results are sorted and can be aggregated in equivalent

unities, relating, for example, all the gases that contribute to the global warming with equivalent

unities of carbon dioxide, such as equivalent kg of CO

2

.

Optionally, each indicator category can be related to a reference quantity, through the normalization

process or grouped for generating single indicators.

4

th

Phase

At the fourth phase, called

interpretation

, the inventory analysis is considered with the impact

assessment, to answer the goals of the study. At the interpretation, the limitation of the study is

clarified and recommendations are made based on the findings of previous phases.