What is ISO 14040?
ISO 14040:2006 is the principles and framework standard for life cycle assessment (LCA). ISO lists edition 2 as current, confirmed in 2022, with Amendment 1:2020. It covers goal and scope, life cycle inventory, life cycle impact assessment, interpretation, reporting, critical review and limitations, but not detailed calculation methods.
Why does ISO 14040 matter to you?
A customer may ask if a product study follows ISO 14040. The name alone does not make results comparable. Check its purpose, audience, unit of product or service, included life-cycle stages, environmental effects, data sources, assumptions and review.
How does ISO 14040 work?
ISO 14040 gives the study a four-part map: define its purpose and included life-cycle stages; record material and energy inputs; calculate the selected environmental effects; then interpret what the results mean. A data gap can send the study back to an earlier phase. ISO 14044 gives the detailed requirements and guidance.
What mistakes should you avoid?
- Citing ISO 14040 without stating the method, boundary, functional unit and data sources used.
- Comparing studies with different functions, life-cycle stages or impact methods.
- Calling a greenhouse gas result a complete multi-impact LCA.
Is ISO 14040 the same as ISO 14044?
No. ISO 14040 states the principles and framework. ISO 14044 provides requirements and guidance for carrying out, reporting and critically reviewing an LCA. A study commonly uses them together.
Does ISO 14040 give you an emissions number?
No. It structures the study but does not supply activity data, emission factors or an impact model. Your report must identify those inputs and methods.
What should you request with an ISO 14040 study?
Ask for the goal and scope, functional unit, boundary diagram, inventory, impact method, assumptions, exclusions, interpretation and critical-review statement. These show what the result covers and where comparison is unsafe.