19/30375689 DC - BS EN ISO 8501-4. Preparation of steel substrates before application of paints and related products. Visual assessment of surface cleanliness. Part 4. Initial surface conditions, preparation grades and flash rust grades in connection with water jetting

19/30375689 DC

BS EN ISO 8501-4. Preparation of steel substrates before application of paints and related products. Visual assessment of surface cleanliness. Part 4. Initial surface conditions, preparation grades and flash rust grades in connection with water jetting

Status : Current, Draft for public comment   Published : May 2019

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This part of ISO 8501 specifies a series of preparation grades for steel surfaces after removal/partial removal of water-soluble contaminants, rust, previous paint coatings and other foreign matter by high-pressure water jetting. The various grades are defined by written descriptions together with photographs that are representative examples within the tolerances for each grade as described in words. In addition, this part of ISO 8501 specifies both initial surface conditions and after-cleaning flash rust grades, also defined by written descriptions together with representative photographic examples.

NOTE 1

Examples of foreign matter, other than paint residues, are salt, grime, dirt, mill scale, oil, grease and marine growth, e.g. algae.

This part of ISO 8501 relates the cleanliness of the surface to its visual appearance. In many instances, this is sufficient for the purpose but, for coatings likely to be exposed to severe environments, such as water immersion and continuous condensation conditions, consideration should be given to testing for soluble salts and other invisible contaminants on the visually clean surface by the physical and chemical methods which form the subjects of the various parts of ISO 8502.

The roughness characteristics of the surface should also be considered by reference to ISO 8503, although it must be noted that preparation by high- pressure water jetting does not create a profile or significantly change an existing profile.




Standard Number19/30375689 DC
TitleBS EN ISO 8501-4. Preparation of steel substrates before application of paints and related products. Visual assessment of surface cleanliness. Part 4. Initial surface conditions, preparation grades and flash rust grades in connection with water jetting
StatusCurrent, Draft for public comment
Publication Date13 May 2019
Normative References(Required to achieve compliance to this standard)ISO 4628-3, ISO 8501-1
Informative References(Provided for Information)No other standards are informatively referenced
International RelationshipsISO/DIS 8501-4
Draft Expiry Date02 July 2019
DescriptorsBlast-cleaning, Mechanical cleaning, Surface treatment, Cleaning, Corrosion products, Scale (corrosion), Steels, Surface properties, Surfaces, Rust, Visual inspection (testing), Grades (quality), Corrosion
ICS25.220.10
Title in FrenchPréparation des subjectiles d'acier avant application de peintures et de produits assimilés — Évaluation visuelle de la propreté d'un subjectile — Partie 4: États de surface initiaux, degrés de préparation et degrés de fleurette de rouille après décapage à l'eau sous haute pression Partie 4: États de surface initiaux, degrés de préparation et degrés de fleurette de rouille après décapage à l'eau sous haute pression
CommitteeSTI/21
PublisherBSI
FormatA4
DeliveryYes
Pages17
File Size338 KB
NotesWarning: this draft is not current beyond its expiry date for comments.
Price£20.00


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