Iso 85023 Dust Level Chart Pdf Updated 'link'

Note: Any overall discoloration of the tape (such as reddish-brown from steel grit or black from slag) must automatically be recorded as a Quantity Rating 5. 2. Dust Particle Size Classes (0 to 5)

: Moderate dust presence. Clearly visible groupings of particles.

Ready-to-print field data sheets to record location, tape batch, inspector name, quantity rating, and size class. iso 85023 dust level chart pdf updated

If left unmanaged, this dust acts as a barrier, preventing the liquid paint from properly wetting and anchoring to the steel substrate. Key Sections of the Updated Dust Level Chart

High density. Particles cover a significant portion of the tape, forming a dense pattern. Note: Any overall discoloration of the tape (such

ISO 8502-3 is a critical part of the ISO 8502 series, which focuses on tests for assessing surface cleanliness. Specifically, Part 3 describes the "pressure-sensitive tape method" for evaluating residual dust on steel surfaces that have been cleaned and prepared for painting. Dust contamination is a major threat to coating integrity—it acts as a weak boundary layer, preventing proper adhesion and leading to premature coating failure, such as flaking or blistering. By providing a standardized method for sampling and rating dust, ISO 8502-3 allows inspectors and contractors to make objective, pass/fail decisions about surface readiness, ensuring the performance of subsequent paint systems.

A: Re-blast the surface, then use compressed air and a vacuum brush. Retest until Class 1 is achieved. Clearly visible groupings of particles

Instead, professional inspectors utilize verified field kits from established coating instrument manufacturers. Dust Test After Blast Cleaning IOGS Official Video

The ISO 8502-3 method is a qualitative pressure-sensitive tape test used to measure the amount and size of dust particles remaining on a cleaned surface, typically before coating application. It is particularly crucial for steel surfaces that have been abrasive blast-cleaned. Key Components of the Standard

While quantity is the most common requirement in coating specifications, the size of the particles is also classified. ISO 8502-3 testing | Industrial Physics

| Standard | Method | Scale | Typical Use | |----------|--------|-------|--------------| | ISO 8502-3:2017 | Tape lift | 5 classes (1–5) | Blast-cleaned steel | | SSPC-VIS 4 | Visual | 0–5 (photographs) | Steel & concrete | | NACE No. 12 / SSPC 12 | Tape + photo | 4 classes | Abrasive blast only |