Edexcel A-level Design & Technology: Product Design (9DT0) · Designing for Maintenance and the Cleaner Environment
Mini-Lesson
Designing for Maintenance and the Cleaner Environment
This mini-lesson covers Designing for Maintenance and the Cleaner Environment: the 6Rs, life cycle assessment, designing for maintenance and disassembly, the circular economy, and ethical sourcing.
You will apply the 6Rs, read an LCA, and calculate recyclable content. Press Start to begin.
Sustainability · 6Rs
Sustainability and the 6Rs
Designers reduce environmental impact using the 6Rs, roughly in order of value:
Rethink — is the product needed at all, or could it be designed a smarter way?
Refuse — avoid unnecessary material and over-packaging.
Reduce — use less material and energy.
Reuse — design so parts or the whole can be used again (refillable bottles).
Repair — make products easy to fix and maintain.
Recycle — allow materials to be recovered at end of life.
Prevention beats cure: reducing and reusing save more than recycling, which still uses energy to reprocess.
Quick check
Which R?
?A drinks brand switches from single-use bottles to a refillable bottle scheme. Which R does this best illustrate, and why is it better than recycling?
LCA
Life cycle assessment and carbon footprint
A life cycle assessment (LCA) measures a product impact from cradle to grave, across four stages:
Raw material extraction — mining, harvesting and their impacts.
Manufacture and processing — energy, water and waste in making the product.
Distribution and use — transport (product miles) and energy used in service.
Disposal — landfill, recycling or recovery at end of life.
The carbon footprint totals the greenhouse gases (as CO2 equivalent) across these stages.
Quick check
Which LCA stage?
?In a life cycle assessment, shipping a product across the world by container falls under which stage?
Maintenance & DfD
Maintenance, disassembly and the circular economy
Designing for a longer, cleaner life:
Design for maintenance — easy access, replaceable parts and consumables (filters, batteries) so products last.
Design for Disassembly (DfD) — temporary fixings and clearly separated materials so products can be taken apart to repair, reuse or recycle.
Circular economy — keep materials in use in loops (make, use, recover, remake), replacing the linear take-make-dispose model.
Enemy of sustainability: glued, mixed-material assemblies that cannot be separated force whole products into landfill.
Sort it
Sort the sustainable actions
Tap an action, then the strategy it belongs to.
📉 Reduce at source
🔁 Reuse / Repair
♻️ Recycle / Recover
Quick check
Why DfD?
?How does Design for Disassembly (DfD) support the circular economy?
Resources & ethics
Resources, Fairtrade and ethical sourcing
Material choice has an ethical dimension:
Finite (non-renewable) resources — metals, oil-based polymers — will run out and should be conserved.
Renewable resources — responsibly managed timber (e.g. FSC-certified) can be replaced.
Fairtrade and ethical sourcing — fair pay and conditions for producers, and responsible supply chains.
Match it
Match each term to its meaning
Tap an item on the left, then its match on the right.
Term
Meaning
Calculate
Your turn — recyclable content
1A product has a mass of 500 g, of which 350 g can be recycled. Percentage recyclable = recyclable mass ÷ total mass x 100. Calculate the percentage that is recyclable.