The encyclopedia · Engineering & Operations · Operational decision · 2012–2015
Ford's risk model exposes hidden single-source dependencies
A supplier can look safe and still be a single point of failure; Ford's model traces a disruption through the whole network to find that exposure.
Ford Motor Company
the move
Ford's supply chain spans thousands of suppliers and parts, and a failure anywhere can ripple. Yet most risk tools rank suppliers by their own risk, which can hide the truly dangerous single point of failure.
The naive approach is to screen suppliers individually and fix the ones that look risky.
The move was a three-year Ford-MIT-Duke-Cornell engagement that built a novel risk-exposure model, propagating a disruption from any point through the network to quantify how much of Ford's production it touches.
Applied at Ford it identified previously unrecognized risk exposures, revealing dependencies that individual supplier screening had missed; the work won the 2014 INFORMS Daniel H. Wagner Prize.
why it works
- Risk that looks low at one supplier can be catastrophic once it cascades.
- A structural model finds single points of failure that a scorecard cannot.
- It converts a vague worry into a measurable exposure amount.
- Focusing mitigation on the highest-exposure nodes is far cheaper than blanket safety stock.
what transfers
Do not rank suppliers by how risky they look; rank them by how much of your output depends on them. The fragile point is the one whose failure cascades to the most product, even if it looks harmless.
what came after
Ford used the model to spot hidden concentration in its network and target mitigation, and the methods became a reference for structural supply-chain risk management.
references
- Identifying Risks and Mitigating Disruptions in the Automotive Supply Chain
- Identifying Risks and Mitigating Disruptions in the Automotive Supply Chain
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