Risk hubs • Cleanliness

Cleanliness risk: prevent particles, burr latency, and contamination

Particles, burrs, and residues cause receiving holds. This hub covers cleanliness specs, inspection gates, packaging, and shipment controls that prevent contamination escapes.

Cleanliness
Buyer‑ready evidence Dispute prevention Repeatable controls Export‑ready delivery
Cleanliness risk hub
SEMIX — evidence-driven CNC machining in Vietnam.

What to watch for (failure modes) vs. what to request (controls)

Common failure modes

  • Parts pass dimensional checks but fail particle extraction after transit (latent burr fracture).
  • Cosmetic damage or embedded debris from handling or poor separation in packaging.
  • Residues from machining/cleaning that contaminate downstream assembly.
  • Edge/burr control not verified at the right step (burr latency).

Controls & evidence you should ask for

  • Deburr strategy designed to eliminate latent burrs (verification step placed before packaging).
  • Clean handling and packaging separation to prevent re-contamination.
  • Cleanliness specification alignment (ISO 14644 / IEST style concepts where applicable).
  • Photo evidence and packaging checklists as part of the evidence pack.
  • Incident-style evidence patterns showing root cause + corrective actions.

RFQ snippet (copy/paste)

Use the lines below to make sure your RFQ/PO includes the evidence needed to eliminate this risk.

  • Specify cleanliness expectations (particles, residues, handling restrictions).
  • Declare any materials/finishes with special contamination sensitivity (PEEK, vacuum hardware, anodize, etc.).
  • State packaging needs (double-bag, separators, labels, kit layout).

RFQ checklist Start an RFQ Evidence pack starter kit

Fast path

If you only do one thing: align the CTQs + decision rule + evidence pack format before first article. Most receiving disputes come from ambiguity, not capability.

Documentation packages Inspection & metrology

Proof library (projects + evidence patterns + briefs)

Use these links to evaluate capability and corrective-action maturity before placing a PO.

Related projects

View all projects in this theme

Evidence patterns (incident-style case studies)

Browse all evidence patterns

Deep technical briefs

View all briefs in this theme Technical academy

Templates & evidence pack artifacts

If your receiving team uses specific forms, share them during RFQ—SEMIX can map fields 1:1. Otherwise, start with the templates below.

Browse all templates Request a Quote

Why templates matter

In global supply chains, “quality” is often judged at receiving. A clean evidence pack reduces back‑and‑forth, speeds approvals, and protects schedules.

These templates are print‑to‑PDF and designed to be adapted to your PO flow‑downs.

FAQ

What is burr latency?

A burr can survive early checks but later fracture due to handling or transit vibration—creating particles downstream. We place verification gates to eliminate this risk.

Can you align to a customer cleanliness spec?

Yes. Share your cleanliness/outgassing/handling expectations during RFQ (NDA if needed) and we will map controls and evidence to that flow-down.

Do you provide photo evidence of packaging and handling?

Yes. Photo evidence can be included as part of the evidence pack when cleanliness or cosmetic risk is high.

Ready to reduce this risk?

Send an RFQ package (NDA first if needed) with your drawing/model, material/finish, quantity, CTQs, and evidence requirements.

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