4.1 Governance and Operating Model
Supplier Quality Management (SQM) is notthe "Procurementtechnical withfirewall aseparating caliper."external Whilesupply Procurementchain focusesentropy onfrom your internal manufacturing stability. Unlike Procurement, which optimizes for cost and delivery (Commercial), SupplierSQM Qualityoptimizes focuses onfor riskRisk and capabilityCapability (Technical). TheThis missionchapter mandates the operational architecture required to extend process control beyond the factory walls, ensuring external partners function as reliable extensions of the SQM function is to extend the factory's quality firewall beyond our own four walls, ensuring that external partners operate with the same rigor as our internal lines.production This chapter defines the boundaries, authority, and operational rhythm of the Supplier Quality Engineer (SQE).line.
Mission and Boundaries
The SQESupplier isQuality theEngineer technical(SQE) conscienceoperates ofwith the supply chain. The role is governed by a strictabsolute separation of powers from Procurement. This separation is critical to prevent conflictsthe conflict of interest betweeninherent in prioritizing "gettingcheaper" the part cheap" andover "getting the part right.compliant."
The SQE Mission: To guarantee that no defective material entersIf themanufacturingissuestreamisandTechnicalthat(Capability,supplierRisk,processesSpecification)are–>statistically capable of meeting specifications.WhatSQEOwnsowns(Thethe"Red" Zone)decision.:TechnicalMandate:Qualification:ExerciseVetoveto power over new suppliers based on audit results.Material DispositionMandate:: The absolute authority toBlock or Quarantine suspectmaterial,materialregardlessimmediately.ofThis authority overrides production urgency.CorrectiveMandate:Action: Ownership ofOwn theSCAR (Supplier Corrective ActionRequest)Requestcycle.(SCAR) cycle from initiation to validation.
WhatIfSQEtheDoesissueNOTisOwnCommercial (ThePrice,"Green"Terms,Zone)Logistics):–> Procurement owns the decision.CommercialMandate:Terms:NegotiatePricing,pricing, payment terms, andcontracts (Procurement).contracts.SelectionMandate::We validate capability; Procurement selectsSelect the partner from the SQE-qualified list.ExpeditingMandate::ChasingExpedite latepartsdeliveries.
Pro-Tip: Never allow "Commercial Leverage" to override a "Technical Veto." If a supplier is technically incapable, no price discount can compensate for the resulting line-down risk.
Authority Matrix (RACI Logic)
Ambiguity during a quality spill is a Buyerfailure function,mode. notadhere ato Qualitythe function.following
Thedecision Supplierlogic Qualityto RACImaintain Matrix
velocity.
ToScenario: ensure decision-making velocity, authority is clearly mapped. Ambiguity in a "Line Down" situation is unacceptable.
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New Supplier Qualification |
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KeyProcurement:DistinctionAccountable:.TheRecoupsSQEfinancialcanlossesstopfrom thelinesupplier.- SQE:
(TechnicalInformed.Block);Provides technical evidence of theBuyer negotiates the financial consequence (Commercial recovery).failure.
The Operating Process MapLifecycle
The SQM lifecycle of Supplier Quality is a closed-loop system,control system. Do not atreat these as linear seriesadministrative ofsteps; events.they are gates that must be cleared to proceed.
Phase 1: Qualification (Pre-PO)
:TriggerInput::Procurement nominates a potential source.ActionAction::SQE performs aExecute Risk Assessment and On-Site Audit (VDA 6.3 / ISO 9001).GateLogic::If Audit Score ≥ Threshold –>Pass/Pass. Add to Qualified Vendor List (QVL).- If Audit Score < Threshold –> Fail.
A failed audit places the supplier onAssign "Do Not Use"status in the ERP.status.
Phase 2: Incoming Control (Active)
:TriggerInput::Materialarrivalarrives at Dock.ActionAction::IQC(Incoming Quality Control)inspects per the SQE-defined SamplingPlan defined by the SQE.Plan.OutputLogic::- If
PassCompliant –> Release toStockStock. - If
ORNon-Compliant –> Reject to MRB.
- If
Phase 3: Escapes & Reaction (Reactive)
:TriggerInput::Defectfounddetected onthe lineLine orin the field.Field.ActionAction::SQE initiatesInitiate Containment (24h) andissues aissue SCAR.
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Phase 4: Resolution & Monitoring (Sustaining)
:TriggerInput::SCARSupplierResponse.submits CAPA.ActionAction::SQEVerifyverifies the "Permanent CorrectiveAction"Action (PCA).MetricMetric::Update SupplierScorecard update (Quality Component).Scorecard.
Re-Validation (Loop):Trigger: Major process change or annual schedule.Action: Surveillance Audit to ensure the "Golden Process" has not degraded.
Interface with Internal Stakeholders
The SQE doesoperates notas workthe insystem aarchitect silo.for Theexternal "Handshake"quality, requiring precise interfaces with internal teams is critical.teams.
IQCInterface(IncomingwithQuality Control)IQC::The SQEisacts as the "Legislator" (writesdefines the inspectionplan);plan and limit samples), while IQC acts as theIQC"Enforcement"Inspector(executes the plan).- Requirement: Provide clear, binary acceptance criteria. Ambiguous instructions lead to false rejects or escapes.
- Interface with Production: Production is the
"PoliceprimaryOfficer"customer.- Requirement:
(enforcesIf bad parts stop theplan). Theline, SQEmust provide clear "Limit Samples" and inspection instructions. Production: Operations is the "Customer." If the line stops due to bad parts, the SQE must bepresence on the floor is required within 15 minutes to assessthe fallout.impact.
- Requirement:
- Interface with Program Management (PM):
:- Requirement:
The SQE providesDefine the "Risk Profile" for NPI. If a supplier isrisky,high-risk,the SQE mandatesmandate "Safe Launch" protocols (e.g., 100% source inspection).
- Requirement:
Final Checklist
Governance Element | Mandate | Risk of Failure |
Veto Power | SQE can disqualify |
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Stop Authority | SQE can block stock |
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SCAR Ownership | SQE Only |
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Commercial Separation | No Pricing Discussions |
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Deviation Authority | Engineering Only | Unsafe |