Iso 85023 Dust Level Chart Pdf Updated ((free)) -

Imagine a critical bridge construction project where every detail matters. The lead inspector,

Acceptance criteria mapping table

| Coating Environment | Acceptable Dust Quantity | Max Particle Size | Recommended Action | | :--- | :--- | :--- | :--- | | Offshore / Marine (Splash Zone) | Class 1 or 2 | <100 µm | High-pressure fresh water rinse before coating. | | Chemical Storage Tank Lining | Class 1 | <50 µm | Vacuum cleaning + tack rag immediately before coating. | | Bridge Structural Steel (Atmospheric) | Class 3 | <200 µm | Compressed air blow-down acceptable. | | Pipes buried in soil | Class 3 | <300 µm | Minor dust acceptable if primer is high-build. | | Recreational equipment / handrails | Class 4 | <400 µm | Cosmetic only – structural risk low. | iso 85023 dust level chart pdf updated

3. The Procedure (Step-by-Step)

  1. Select Area: Choose a representative area of the blasted steel surface.
  2. Apply Tape: Apply the specialized adhesive tape to the surface.
  3. Pressure: Rub the back of the tape firmly to ensure good contact with the dust (a standard pressure is often applied using a specific roller or by rubbing with a fingernail/cloth).
  4. Remove: Peel the tape off the surface at a steady speed. The dust particles will stick to the tape.
  5. Mount: Place the tape onto the white background card or a glass plate.
  6. Compare: Compare the tape against the ISO 8502-3 Visual Comparison Chart.

“Did you see the email?” Jan’s voice was tight. “The new charts are live. They’ve changed Size 3.” Imagine a critical bridge construction project where every