ITP 411 MIDTERM 1

What is the purpose of defining a goal in a study?

To clarify the reasons for the study and inform decisions.

What should a clear goal statement include?

A clear goal statement should include the intended application, reasons for carrying out the study, and intended audience.

Who is the intended audience for the results of a study?

The intended audience is the group to whom the results of the study are intended to be communicated.

What does ISO 14044 say about the goal of a study?

According to ISO 14044, the goal generally includes factors such as a clear goal statement, intended application, reasons for the study, intended audience, and use in comparative assertions.

What is one reason for carrying out a study?

To provide information for decision-making.

What are comparative assertions in the context of study results?

Comparative assertions are claims intended to be disclosed to the public based on the study results.

Intended application

Who is the intended audience for actions to reduce the environmental footprint of products?

Internal staff (scientists, engineers, designers)

What is the intended use of information for management regarding environmental actions?

To make strategic decisions about investments in technology

What information should be shared with shareholders?

Progress in reducing environmental burdens and meeting goals

What information should be provided to customers and the public?

Information about product environmental impact or responses to inquiries about environmental issues

goal statement has these things

Purpose of this study

Reason for carrying out

Intended use

Intended audience

Public, comparative

What does the scope definition establish in an LCA study?

The main characteristics of the intended LCA study.

What is a functional unit in the context of an LCA study?

The function of the product system.

What does the system boundary refer to in an LCA study?

The limits of the product system being analyzed.

What are allocation procedures in an LCA study?

Methods for distributing environmental impacts among different products or processes.

What is the impact assessment method in an LCA study?

The approach used to evaluate the environmental impacts.

What are impact categories in an LCA study?

Different areas of environmental impact that are assessed.

What does interpretation refer to in an LCA study?

The analysis and conclusions drawn from the LCA results.

What are data quality requirements in an LCA study?

Standards for the reliability and relevance of data used.

What assumptions may be made in an LCA study?

Presumptions that influence the study's outcomes.

What are study limitations in an LCA study?

Constraints that affect the validity or applicability of the study.

What is a critical review in the context of an LCA study?

An evaluation of the study's methodology and findings by external experts.

What is the required format of the report in an LCA study?

The specific structure and presentation style for the study's findings.

What is the basis for comparison in Life Cycle Assessment (LCA)?

Functional Unit

What is a key element of Life Cycle Assessment (LCA) that must be clearly defined?

Functional Unit

How is the Functional Unit defined in the context of a product system?

It is the quantified performance of a product system used as a reference unit.

What is a functional unit in product comparisons?

A functional unit is the basis for comparison between products, often reflecting their performance characteristics.

Why is defining a functional unit important in product comparisons?

Defining a functional unit is important because it allows for a fair comparison between products that may have different performance characteristics.

What is an example of a functional unit when comparing paper towels and hand dryers?

An example of a functional unit for comparing paper towels and hand dryers is 'x pair of dried hands.'

What challenge is often faced when defining a functional unit?

The challenge is that the performance of products is not always easy to describe.

What should the scope of an LCA specify?

The functions of the system being studied.

How should the functional unit be aligned in an LCA?

It should be consistent with the goal and scope of the study.

What is the purpose of the functional unit in an LCA?

To provide a reference to which the input and output data are normalized.

What characteristics should the functional unit have?

It should be clearly stated and measurable.

What is the role of the functional unit in comparing alternatives?

It is common to all alternatives and forms the basis for comparison.

What is the difference between closed-loop and open-loop recycling?

Closed-loop recycling involves recycling materials back into the same product, while open-loop recycling involves recycling materials into different products.

What is an example of closed-loop recycling?

A plastic bottle is collected, recycled, and used partly in new bottles.

What is an example of open-loop recycling?

A plastic bottle is collected, recycled, and used partly in textile fibers.

How are recycling benefits allocated in the example of a plastic bottle?

50% of recycling benefits are allocated to the bottle system (closed-loop) and 50% to textiles (open-loop).

What is the role of a cullet recycling facility in glass recycling?

It provides recycled glass for new bottles and recovers metals from sorting residues.

How can allocation choices be made in glass recycling?

Allocation can be split by mass (kg glass vs. kg metals) or by economic value (metals often have higher value).

What does Ecolmpact-COMPASS use for allocation?

Ecolmpact-COMPASS uses the allocation cut-off by classification from ecoinvent (ecoinvent 2023).

What does the allocation cut-off by classification exclude?

The allocation cut-off excludes byproducts of waste treatment processes (e.g., energy captured during incineration) and recyclable byproducts.

Where can further details about the allocation model be found?

Further details about the allocation model can be found in the ecoinvent documentation (ecoinvent 2024).

Why does the cut-off method work well with attributional LCA?

The cut-off method works well with attributional LCA because it accounts for the packaging system life cycle and does not include expansions or additional product life cycles (Ekvall et al., 2020).

What is inventory analysis?

Inventory analysis is the stage in which data are collected and calculations are performed to quantify the relevant inputs and outputs of the system.

What types of data are typically included in inventory analysis?

Inventory data typically include raw materials, energy consumption, and the emission of solid, liquid, and gaseous wastes.

For what timeframes can inventory data be provided?

Inventory data may be provided for full life cycles or for partial life cycles.

What is an important step in inventory analysis?

The creation of a life cycle diagram that serves as the blueprint for the data to be collected.

What should be represented in the life cycle diagram during inventory analysis?

Each step in the system, including the production of ancillary products such as chemicals and packaging.

Why is the life cycle diagram important in inventory analysis?

It clearly depicts the relative contribution of each subsystem to the entire production system and the final product.

What is one issue that can be analyzed in inventory analysis?

Data Collection

What is another issue that can be analyzed in inventory analysis?

Refining System Boundaries

What is a third issue that can be analyzed in inventory analysis?

Calculation

What is a fourth issue that can be analyzed in inventory analysis?

Validation of Data

What is a fifth issue that can be analyzed in inventory analysis?

Relating data to the specific system

What is a sixth issue that can be analyzed in inventory analysis?

Allocation and Recycling

Data in PackageSmart

What is the purpose of Life Cycle Impact Assessment (LCIA)?

To assess a system's Life Cycle Inventory results and improve understanding of their potential environmental significance.

What does LCIA use to simplify Life Cycle Inventory results?

Impact categories and associated indicators.

Why is LCIA included in a Life Cycle Assessment (LCA)?

To help identify potential environmental problems associated with various man-made activities.

What is Life Cycle Impact Assessment defined as?

The phase in the LCA aimed at understanding and evaluating the magnitude and significance of the potential environmental impacts of a product system.

What does Impact Assessment (LCIA) translate into?

Potential impacts on the environment and human health.

What are the potential impacts assessed in LCIA related to global warming?

Global warming potential.

What potential impact does LCIA assess related to acid rain?

Acidification potential.

What potential impact does LCIA assess related to nutrient pollution?

Eutrophication potential.

What potential impact does LCIA assess related to the depletion of the ozone layer?

Ozone depletion potential.

What potential impact does LCIA assess related to air quality?

Smog formation potential.

What type of human health impacts does LCIA consider?

Carcinogens.

What is the purpose of classification in LCIA?

To group emissions into categories where they may contribute to environmental or health impacts.

What does characterization in LCIA involve?

Normalizing within each category to a common reference substance, e.g., CO2 equivalents for global warming potential.

What do the results of an LCIA represent?

Potential impacts, not absolute or precise impacts.

What is the environmental indicator for fossil fuel use?

Fossil Fuel Use (MJ-equiv)

What is the environmental indicator for water use?

Water Use (liters)

What is the environmental indicator for mineral resource use?

Mineral Resource Use (kg)

What is the environmental indicator for GHG emissions with carbon uptake?

GHG Emissions with Carbon uptake (kg CO2 - equiv)

What is the environmental indicator for GHG emissions?

GHG Emissions (kg CO2 - equiv)

What is the environmental indicator for human impact?

Human Impact (DALYs)

What is the environmental indicator for freshwater eutrophication?

Freshwater Eutrophication (kg PO4 - equiv)

What is the environmental indicator for freshwater ecotoxicity?

Freshwater Ecotoxicity (CTUe)

What is the cumulative energy demand measured in?

MJ-equiv

What impact category measures climate change?

Kg CO2-equiv

What is the impact category for ecosystems measured in?

Species.yr

What impact category measures human health?

DALYs

What is the resource impact category measured in?

$

What is the water impact category measured in?

m^3

What is normalization in data analysis?

Normalization is the process of adjusting values in a dataset to allow for meaningful comparisons.

What question is useful to ask when data is presented as a percentage of the highest category?

How meaningful are the emissions associated with a particular category?

What can large differences in percentage indicate about absolute amounts?

Large differences in percentage can be associated with only small absolute amounts.

What can small differences in percentage indicate about actual emissions?

Small differences in percentage can be associated with large amounts of actual emissions.

What does LCA stand for?

Life Cycle Assessment

Is LCA a snapshot of the current situation?

No, LCA evaluates potential scenarios.

What factors should be evaluated in LCA?

Material composition

What factor related to weight should be evaluated in LCA?

Weight

What type of changes should be considered in LCA?

Process changes

What aspect of transportation should be evaluated in LCA?

Transportation distances and modes

What changes in product use should be evaluated in LCA?

Use changes

What end-of-life management options should be considered in LCA?

Reuse, recycling, composting, disposal

What geographic aspect should be evaluated in LCA?

Geographic location