Meaning
Operational rule defines the precise volume threshold or lead time drift that mandates activating a secondary supplier for a critical component. Procurement teams embed a dual sourcing trigger within supply chain agreements to maintain continuous material flow when primary production lines encounter yield drops or geopolitical disruptions. Activation shifts a predetermined percentage of purchase orders to a qualified secondary source without requiring renegotiation of master terms.
This mechanism governs vendor allocation rules, excluding single-source custom tooling provisions.
Volume Threshold
Capacity benchmarks established during initial pilot runs must account for secondary supplier ramp durations. A dual sourcing trigger fires when primary vendor lead times extend beyond contractual limits or when lot rejection rates exceed target levels. Early activation incurs higher unit costs and splits purchasing volume across two vendors.
Delayed execution leaves assembly lines vulnerable to complete stoppage when primary supply fails.
Supply Risk
Supplier capacity forecasts frequently overestimate emergency response speed under surge conditions. Demonstrating secondary supplier capability during low-volume pilot phases does not guarantee rapid volume expansion during actual disruptions. Second-source vendors require warm-standby tooling and periodic batch runs to maintain operational readiness.
Unused tooling deteriorates while uncalibrated processes introduce dimensional variations across component lots.
Qualification Gate
Audit procedures evaluate alternate supplier tooling and process capability through pre-scheduled validation production runs. Full qualification requires secondary sources to match primary component tolerances across three independent production lots. Validated secondary capacity prevents extended factory downtime during primary supplier failure.
