EN 14879-2:2006

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Organic coating systems and linings for protection of industrial apparatus and plants against corrosion caused by aggressive media - Part 2: Coatings on metallic componentsLQGXVWULMVNLKGHOLKSystemes de revetements organiques de peinture et autres revetements rapportés pour la protection des appareils et installations industriels contre la corrosion par des milieux agressifs - Partie 2: Revetements pour composants métalliquesBeschichtungen und Auskleidungen aus organischen Werkstoffen zum Schutz von industriellen Anlagen gegen Korrosion durch aggressive Medien - Teil 2: Beschichtungen für Bauteile aus metallischen WerkstoffenTa slovenski standard je istoveten z:EN 14879-2:2006SIST EN 14879-2:2007en25.220.60Organske prevlekeOrganic coatingsICS:SLOVENSKI
STANDARDSIST EN 14879-2:200701-marec-2007

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14879-2December 2006ICS 25.220.60 English VersionOrganic coating systems and linings for protection of industrialapparatus and plants against corrosion caused by aggressivemedia - Part 2: Coatings on metallic componentsSystèmes de revêtements organiques de peinture et autresrevêtements rapportés pour la protection des appareils etinstallations industriels contre la corrosion par des milieuxagressifs - Partie 2: Revêtements pour composantsmétalliquesBeschichtungen und Auskleidungen aus organischenWerkstoffen zum Schutz von industriellen Anlagen gegenKorrosion durch aggressive Medien - Teil 2:Beschichtungen für Bauteile aus metallischen WerkstoffenThis European Standard was approved by CEN on 25 October 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2006 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14879-2:2006: E

Specimen form.49 Annex B (informative)
Information to be given by the coating material manufacturer.50 Annex C (informative)
Information to be given by the coating manufacturer.51 Annex D (informative)
Resistance of resins to various chemicals at ambient temperature.52 Annex E (normative)
Testing the dissipation capability.53 E.1 General.53 E.1.1 Dissipation resistance.53 E.1.2 Ground dissipating resistance.53 E.2 Testing the dissipation resistance of test samples.53 E.2.1 Instruments.53 E.2.2 Test procedure.53 E.2.3 Test report.53 E.3 Measuring the ground dissipation resistance on the laid surface protection system.54 E.3.1 Instruments.54 E.3.2 Preparation.54

Test fluid groups for verification of suitability for material/media combinations.56 Annex G (informative)
Selection criteria for surface protection systems.58 G.1 Load profiles and suitable protection for gutters, trenches, pipes etc.58 G.2 Load profiles and suitable protection for containers.59 Annex H (informative)
Sample form for acceptance inspection report.60 A-Deviation: National deviation due to regulations, the alteration of which is for the time being outside the competence of the CEN/CENELEC member.61 Bibliography.62

corrosion caused by aggressive media" consists of the following parts:  Part 1: Terminology, design and preparation of substrate  Part 2: Coatings on metallic components  Part 3: Coatings on concrete components  Part 4: Linings on metallic components  Part 5: Linings on concrete components  Part 6: Combined linings with tile and brick layers According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Den-mark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxem-bourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzer-land and United Kingdom.

caused by aggressive media — Part 4: Linings on metallic components EN ISO 175, Plastics — Methods of test for the determination of the effects of immersion in liquid chemicals (ISO 175:1999)

apply.
Selection criteria 4.1.1 General The stress to be encountered by a protective coating shall be known before the requirements for it can be specified. For the scope of this European Standard, the stress types detailed in 4.1.2 to 4.1.8 are the most relevant. Where necessary, grades have been used to describe different levels of stress. 4.1.2 Exposing media Aggressive substances or water pollutants may occur as solids, fluids or gases. Their aggressive action on metallic components usually occurs when they are in a liquid state (e.g. aqueous solutions or condensates). The substances may occur at varying intervals in their pure state or as mixtures.

1) International Union of Pure and Applied Chemistry. 2) Chemical Abstract Service.

Phosphoric acid Inorganic, oxidizing acids HNO3 H2SO4 CrO3, H2CrO4 HClO3 Nitric acid Sulfuric acid, over 70 %
Chromic acid Chloric acid Inorganic acids, dissolving SiO2 HF H2SiF6 HBF4 Hydrofluoric acid Hexafluorosilicic acid (containing HF) Tetrafluoroboric acid (containing HF) Salts NaCl FeSO4 Na2CO3 Sodium chloride Iron(II) sulfate Sodium carbonate Bases NaOH KOH CaO, Ca(OH)2NH4OH
Sodium hydroxide Potassium hydroxide Calcium oxide Calcium hydroxide
Ammonia solution (Ammonium hydroxide solu-tion) Oxidizing bases NaOCl Sodium hypochlorite II. Organic chemicals Organic acids HCOOH CH3COOH CH2ClCOOH (COOH)2 CH3CHOHCOOH Formic acid Acetic acid Chloroacetic acid Oxalic acid Lactic acid Aliphatic hydrocarbons C6H14 C8H18 Hexane Octane Aromatic hydrocarbons C6H6 C6H5CH3 C6H4(CH3)2 Benzene Toluene Xylene Alcohols CH3OH C2H5OH C4H9OH CH2OHCH2OH Methanol Ethanol Butanol Ethanediol Aldehydes, ketones, esters CH2O CH3COCH3 C2H5COCH3 CH3COOC2H5 Formaldehyde Acetone Methyl ethyl ketone (2-butanone) Ethyl acetate Aliphatic halogenated hydrocarbons CH2Cl2 C2HCl3 C2Cl3F3 Dichloromethane Trichloroethylene Trichlorotrifluoroethane Aromatic halogenated hydrocarbons C6H5Cl ClC6H4CF3 Chlorobenzene Chlorobenzotrifluoride
Aliphatic amines CH3NH2 (C2H5)3N NH2C2H4NH2 Methylamine Triethylamine Ethylene diamine Aromatic amines and pyridine C6H5NH2
C5H5N Aniline
Pyridine Phenols C6H5OH CH3C6H4OH Phenol Cresol Fats, oils
Vegetable and animal fats and oils

no exposure to fluids; Grade 1:
constant or frequent exposure to a film of fluid, due to condensation and the like (e.g. gas ducts, stacks); Grade 2: operational exposure to a constant flow of fluid involving no significant hydrostatic pressure (e.g. pipes); Grade 3: constant exposure to fluid for unlimited periods (e.g. vessels). 4.1.4 Thermal loading The thermal load caused by medium effect or other sources of heat affects the effectiveness of a surface pro-tection system in the following way: a) Aggressiveness of medium Elevated temperatures increase the aggressiveness of the medium by raising the levels of its chemical reac-tions and diffusion, and also through the accumulation of volatile substances in the vapour space. b) Thermal stress Temperatures which deviate from the installation temperature cause thermal stress between the substrate and the surface protection system and may cause peeling, cracks etc. This may result from the direct action of hot or cold media, or from radiant heat and extreme ambient temperature. The maximum thermal load shall be stated in °C. 4.1.5 Changes in temperature Changes in temperature include: a) temperature changes at the protective surface during exposure to fluid loads of grades 1 to 2 as in 4.1.3 caused by increased/decreased medium temperatures; b) temperature changes as otherwise constantly heated or cooled surfaces, resulting from operational cir-cumstances, such as start-up and shutdown. c) process-related changes in the temperature of the medium under loading conditions corresponding to grade 3 (as in 4.1.3). Temperature changes due to climatic influences are dealt with in 4.1.7. The extent, direction, speed and frequency of temperature changes shall be taken into consideration when assessing their effect. The following grades serve in assessing the effects of temperature changes, whereby details of the frequency and the duration of temperature changes are to be given for grades 1 to 4. Grade 0:
no temperature changes; Grade 1:
infrequent temperature changes up to 50 K; Grade 2:
infrequent temperature changes of more than 50 K;

frequent temperature changes of not more than 50 K; Grade 4:
frequent temperature changes of more than 50 K; Grade 5:
temperature changes involving thermal shock. 4.1.6 Mechanical loading The effectiveness of a surface protection system may be impaired through exposure to mechanical loads or hydrostatic pressure during operation or assembly. The following grades shall be used to assess such loads. Grade 0:
no loads, or hydrostatic pressure up to 0,05 bar; Grade 1:
hydrostatic pressure from 0,05 bar to 0,5 bar; Grade 2:
hydrostatic pressure greater than 0,5 bar. 4.1.7 Climatic influences Climatic influences may affect the durability of a surface protection system, and shall be graded as follows. Grade 0:
no climatic influences: the component is located inside a building and is not exposed to climatic influences; Grade 1:
limited climatic influences: a roof protects the component, which is exposed to limited climatic influences; Grade 2:
full climatic influences: the component is located outside, and is fully exposed to climatic influ-ences. 4.1.8 Additional requirements Additional requirements may derive from special applications, and are not fully covered by this European Standard. They may refer to water protection, explosion protection, fire behaviour, decontamination, health and safety (particularly in the case of foodstuffs and drinking water), non-slip surfaces and smoothness. 4.2
Load profile The loads described in 4.1.2 to 4.1.8 shall be recorded, together with the grades selected. The form repro-duced in Annex A should be used. Tables G.1 to G.2 list frequently occurring load profiles and suitable surface protection systems. 4.3 Requirements 4.3.1 Components The component to be coated shall meet the requirements of EN 14879-1. 4.3.2 Coating materials Coating materials shall be selected which ensure that the coating will meet the requirements of this standard. The manufacturer shall provide an adequate description of the material as regards its characteristics,
processing and container marking. This can include, for instance, the items listed in Annex B.

Necessary for furane or phenolformaldehyde resins, except a thicker primer is applied.
4.3.3.4 Surface properties a) Colour. b) Texture. c) Gloss. 4.3.3.5 Mechanical properties a) Adhesion. b) Hardness. c) Elongation at break.

Figure 1.
Key 1 sealant 2 top coat 3 laminate layer 4 intermediate layer 5 primer 6 metallic substrate Figure 1 — Coating system design

phenolformaldehydes (PF), or vinyl esters (VE). If different types of resins are used in one coating system, these resins shall be compatible with one another. Table 2 gives an indication on the thickness of the layers, the total thickness shall be in accordance with the manufacturer's instructions. 5.1.2.2 Primer The primer not only provides a bond between the metallic substrate and the coating, but also serves as tem-porary corrosion protection of the substrate between surface preparation and the coating process, and shall therefore cover the entire surface. The primer may be omitted in exceptional cases. A different resin may be used for the primer than that used in subsequent layers. 5.1.2.3 Intermediate layer A different type of resin may be used in the intermediate layer than that used in subsequent layers. The inter-mediate layer may either be substituted by a thicker primer or omitted. 5.1.2.4 Laminate layer The laminate layer comprises one or more coats of a fibrous semi-finished product soaked out with one of the binders listed above (5.1.2.1), depending on service conditions. The thickness of each coat, which depends on the mass per unit area of the semi-finished product, and the number of coats determine the total thickness of the laminate layer and thus the level of protection it provides. The same binder shall be used in all laminate layer coats. 5.1.2.5 Top coat The top coat serves to even out and cover the rough surface of the laminate layer, including any protruding fibres. It can be strengthened by adding a thin fleece. The top coat may be omitted. The top coat shall contain the same type of binder as the laminate layer, although here the resin may be of a higher quality. 5.1.2.6 Sealant The sealant lends the coating a smooth finish and should contain the same resin type as the previous coat. The sealant may be omitted. 5.1.3 General requirements 5.1.3.1 Component design and surface requirements See EN 14879-1 for component design requirements and for requirements regarding the substrate surface.

resistance of the coating. 5.1.3.2.6 Marking of containers Containers shall be marked. This can be done for example according to Annex B.
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