ISO 8502-3-2017 PDF

Full title and description

Preparation of steel substrates before application of paints and related products — Tests for the assessment of surface cleanliness — Part 3: Assessment of dust on steel surfaces prepared for painting (pressure-sensitive tape method). This international standard specifies a field/visual method using pressure‑sensitive adhesive tape to assess the quantity and particle size of dust remaining on steel surfaces prepared for painting.

Abstract

ISO 8502-3:2017 describes a qualitative, pictorial rating method for assessing dust left on cleaned steel surfaces prior to painting. The method provides graded images and descriptive classes for average dust quantity and particle size, and is intended for use on surfaces corresponding to rust grades A, B or C (as defined in ISO 8501‑1). It can be applied as a pass/fail field test or used to produce a permanent record (mounted tape samples).

General information

• Status: Published
• Publication date: 10 January 2017
• Publisher: International Organization for Standardization (ISO)
• ICS / categories: 25.220.10 (Surface preparation)
• Edition / version: Edition 2 (2017)
• Number of pages: 8

Key bibliographic and lifecycle details above are taken from the ISO bibliographic entry for ISO 8502-3:2017.

Scope

Specifies a pressure‑sensitive tape technique and pictorial rating system to assess the average amount and particle size of dust remaining on steel surfaces prepared for painting. The method is intended as a qualitative field assessment for surfaces whose pre‑cleaning condition corresponds to rust grades A, B or C per ISO 8501‑1; it may be used to decide compliance (pass/fail) or to keep a permanent record of surface dust. The procedure is descriptive and intended for on‑site use rather than for detailed laboratory quantification.

Key topics and requirements

• Pressure‑sensitive adhesive tape sampling technique for dust pickup.
• Pictorial rating charts for mean dust quantity (graphical grades).
• Descriptive classes for average dust particle size.
• Applicability to steel surfaces at rust grades A, B or C (visual reference to ISO 8501‑1).
• Use as a qualitative "pass/fail" field test or for permanent records (mounted tapes).
• Simple field procedure requiring minimal equipment; intended for surface‑preparation inspection and documentation.

Method details and the pictorial rating approach are specified in the ISO 8502-3:2017 text.

Typical use and users

Common users include coating inspectors, surface‑preparation crews, paint contractors, fabricators, third‑party inspection bodies, corrosion engineers and quality control personnel. Typical applications are on‑site inspection before coating application to verify that dust levels are acceptable for the specified coating system or contractual requirement.

Related standards

ISO 8502-3 is part of the ISO 8502 series (Tests for the assessment of surface cleanliness), which includes multiple parts addressing soluble corrosion products, chloride measurement, extraction methods (Bresle), conductometric and other field/laboratory techniques. It is referenced alongside ISO 8501‑1 (visual rust/preparation grades) and other parts of ISO 8502 used for salt and soluble contaminant measurement.

Keywords

surface cleanliness, dust assessment, pressure‑sensitive tape, steel substrate preparation, ISO 8502, ISO 8501, pictorial rating, field test, coating inspection

FAQ

Q: What is this standard?

A: ISO 8502-3:2017 is an international standard that specifies a pressure‑sensitive tape method and pictorial rating system for assessing dust on steel surfaces prepared for painting.

Q: What does it cover?

A: It covers a qualitative field procedure to estimate the average quantity and particle size of residual dust on steel surfaces prior to coating, using defined pictorial grades and descriptive classes; the tapes can also be mounted to provide a permanent record.

Q: Who typically uses it?

A: Coating inspectors, contractors, fabricators, third‑party inspectors and QA personnel who need a quick, repeatable field check of dust contamination before applying paints or protective coatings.

Q: Is it current or superseded?

A: ISO 8502-3:2017 is the current published edition (Edition 2, published January 2017). It replaced the earlier 1992 edition. Users should verify national adoptions or amendments for local implementations.

Q: Is it part of a series?

A: Yes — it is one part of the ISO 8502 series (Tests for the assessment of surface cleanliness) and is commonly used together with ISO 8501‑1 (rust grades) and other ISO 8502 parts that address soluble salts and related contamination tests.

Q: What are the key keywords?

A: Surface cleanliness, dust assessment, pressure-sensitive tape method, pictorial rating, steel substrate, coating inspection, ISO 8502, ISO 8501.