Overview
ISO/TR 14047:2012 is a Technical Report from ISO that provides illustrative examples showing how to apply ISO 14044:2006 in the life cycle impact assessment (LCIA) phase of a Life Cycle Assessment (LCA). Rather than prescribing a single method, the report offers practical worked examples that reflect current practice and clarify how to implement the mandatory and optional elements of LCIA. ISO/TR 14047:2012 is informative (a Technical Report), intended to support practitioners in interpreting and applying ISO 14044.
Key topics and requirements
The Technical Report centers on the LCIA phase and demonstrates both mandatory and optional LCIA elements as defined in ISO 14044:
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Mandatory LCIA elements
- Selection of impact categories, category indicators and characterization models (e.g., midpoint vs endpoint indicators)
- Classification (assignment) of life cycle inventory (LCI) results to impact categories
- Characterization - calculation of category indicator results from LCI data
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Optional LCIA elements
- Normalization (expressing indicator results relative to reference information)
- Grouping of indicators
- Weighting methods and techniques (including use of expert panels)
- Data quality analysis to inform interpretation
The report contains multiple practical examples illustrating different methodological choices and their consequences. Example topics include material choice for gas pipelines and automotive spoilers, acidification models, greenhouse gas emissions and carbon sinks in forestry, endpoint indicators (e.g., years of life lost), refrigerant gas normalization, waste management normalization, and approaches to weighting.
Practical applications and users
ISO/TR 14047:2012 is aimed at professionals who perform or commission LCAs and LCIA, including:
- LCA practitioners and consultants seeking worked examples to implement ISO 14044-compliant LCIA
- Environmental managers and sustainability teams integrating LCA into product or process decision-making
- Product designers and engineers evaluating material choices (e.g., pipelines, automotive components)
- Policy makers and procurement specialists needing robust impact assessment methods
- Academics and students learning LCIA methodology and interpretation
Practical uses include improving methodological consistency in LCA studies, comparing alternative materials or technologies, communicating impact indicator results, and informing product design, supply‑chain decisions, and environmental policy.
Related standards and notes
- Primary reference: ISO 14044:2006 - Environmental management - Life cycle assessment - Requirements and guidelines
- ISO/TR 14047:2012 is a supporting, illustrative document (second edition, 2012) and does not replace ISO 14044; it demonstrates “ways” to meet ISO 14044 requirements rather than prescribing unique methods.
Keywords: ISO/TR 14047:2012, ISO 14044, life cycle assessment, LCA, life cycle impact assessment, LCIA, characterization, classification, normalization, weighting, environmental management.
Open preview (PDF)Environmental management — Life cycle assessment — Illustrative examples on how to apply ISO 14044 to impact assessment situations
