LCA Engineering study guide
LCA Engineering · Work through your exam, one topic at a time.
LCA Engineering credentials are aimed at professionals who build and defend quantitative life cycle assessments rather than merely read them: sustainability engineers, EHS and product stewardship specialists, consultants, and procurement or design staff who commission studies. The exam tests working command of the ISO 14040/14044 framework end to end - framing goal and scope and a defensible functional unit, constructing and allocating inventory data, selecting and interpreting impact assessment methods, and communicating uncertainty honestly. The LCA Engineering study guide has 10 sections and about 3,169 words.
01LCA Fundamentals: Life-Cycle Logic and Decision Context
LCA Fundamentals checks whether you can frame a study as a life-cycle assessment rather than a single-site audit. Expect questions on the four-phase framework, attributional versus consequential modelling, the meaning of potential impacts, and the limits of comparability.
318 words, about 2 min02ISO 14040/14044: Framework, Requirements and Review
This domain tests the distinction between ISO 14040 and ISO 14044 and the procedural requirements that make an LCA defensible: goal and scope, inventory, impact assessment, interpretation, reporting, and critical review. ISO 14040 sets principles and framework.
325 words, about 2 min03Goal and Scope Definition: Setting a Defensible Study
Goal and Scope Definition tests whether you can state why a study exists, who will use it, what function is modelled, which impacts and boundaries apply, and which assumptions must be disclosed before data collection begins. The goal states intended application, reasons for carrying out the study, intended audience, and whether a comparative assertion will be disclosed publicly.
328 words, about 2 min04Functional Unit and System Boundary: Making Comparisons Fair
This domain tests two of the most mark-sensitive choices in LCA: the quantified function used to scale all flows, and the boundary that decides which unit processes are inside the study. The functional unit is the quantified performance of the system used as the reference.
342 words, about 2 min05Inventory Analysis: Data Collection, Modelling and Allocation
Inventory Analysis tests whether you can build a transparent flow model: collect valid data, link unit processes, handle multi-output processes, and check mass and energy balance before impact assessment. The LCI compiles exchanges with the environment and technosphere for every unit process in the boundary.
322 words, about 2 min06LCIA: Methods, Characterization and Indicators
Life Cycle Impact Assessment tests method literacy: classification, characterization, midpoint versus endpoint indicators, mandatory and optional elements, and the consequences of method and version choice. LCIA converts inventory flows into potential impacts using characterization factors.
310 words, about 2 min07Interpretation, Uncertainty, Sensitivity and Critical Review
Interpretation tests whether you can identify significant issues, test robustness, distinguish uncertainty types, draw bounded conclusions, and design a review that matches the study's disclosure level. ISO interpretation has three main steps: identify significant issues, evaluate completeness, sensitivity, and consistency, and formulate conclusions, limitations, and recommendations.
303 words, about 2 min08Software, Databases and Data Quality Management
This domain tests practical data judgement: selecting representative datasets, documenting metadata, managing versions, and using software without hiding modelling choices. Common LCI databases include ecoinvent, Agribalyse, the US LCI database, ELCD, and official Environmental Footprint datasets.
292 words, about 1 min09Carbon Footprinting, EPDs and Environmental Labels
This domain tests the rules behind product carbon footprints and environmental declarations: ISO 14067, ISO 14025, PCRs, programme operators, verification, and label types. ISO 14067 specifies quantification of a product's carbon footprint using the ISO 14040/14044 framework, focused on GWP.
306 words, about 2 min10Circular Economy, Eco-design and Life Cycle Sustainability Assessment
This domain tests whether you can connect circular strategies and eco-design to quantified life-cycle evidence, and whether you can structure a Life Cycle Sustainability Assessment without collapsing environmental, economic, and social dimensions into an unjustified single score. Circular economy strategies include refuse, reduce, reuse, repair, remanufacture, and recycle.
323 words, about 2 min