Circular design starts with decisions that make continued use and recovery feasible. A durable shell is of limited help if a short-lived component cannot be replaced. A recyclable material still needs a collection route and an operator able to process it.

NIST’s research on product recovery focuses on bringing recovery considerations into early design, supported by data, metrics and testing. Its work on disassembly also shows why information about components, tools and operating sequences matters for maintenance and recovery. These are useful foundations for a practical design brief.

Start with the service the product must deliver

Describe the function, expected operating conditions and performance that must be maintained. For a hypothetical office chair, the requirement might be safe, comfortable seating over a defined period. That framing allows a team to compare keeping an existing chair, refurbishing it or buying a replacement.

Ask why the current product leaves use. Is the cause physical wear, changing needs, unavailable parts or appearance? Each cause suggests a different intervention. Extra durability will not resolve a product that no longer fits its intended task.

Make the likely repair testable

Identify the components expected to fail or wear first. Ask a technician to demonstrate removal and replacement using the proposed instructions. Record the time, tools, damaged parts and inspection needed before return to service.

For our hypothetical chair, replaceable castors and upholstery are possible design options. The brief should also specify spare-part availability, compatible replacements and who will provide the repair. These are proposed project questions, not universal design requirements.

Plan the next use before the first sale

Write a realistic route for collection, inspection, cleaning, repair and resale or redistribution. Identify the receiving organisation and its acceptance criteria. A take-back promise should explain where returned items go and what happens to items that cannot be reused.

For materials that cannot remain in service, ask prospective recovery operators which combinations, attachments and contaminants cause problems. Evaluate the actual available route; theoretical recyclability is only a starting point.

Ask for evidence in procurement

A buyer can request a repair demonstration, a parts catalogue, maintenance instructions and evidence of an operating return route. For important claims, record the model, geographic coverage, date and limitations. A commitment that applies to one product family or region should not silently become a claim about everything a supplier sells.

Compare the cost of ownership as well as purchase price. In a project estimate, state assumptions for use, servicing, repair, downtime and residual value so that the comparison can be checked.

Check trade-offs and learn from a pilot

A repairable design may introduce extra materials or connections. A return system may add transport. Compare these effects with the expected additional service delivered, then collect pilot data on failures, completed repairs and products returned to use. Update the brief when observed behaviour differs from the plan.

Sources and further reading

NIST: Data-Driven Design for Product Recovery; Feng (2011), NISTIR 7772: disassembly information model. The project questions and chair example are original educational illustrations. For the wider framework, read our guide to the six ISO 59004 principles.

Published 4 October 2026.