SIST EN 14879-1:2005
(Main)Organic coating systems and linings for protection of industrial apparatus and plants against corrosion caused by aggressive media - Part 1: Terminology, design and preparation of substrate
Organic coating systems and linings for protection of industrial apparatus and plants against corrosion caused by aggressive media - Part 1: Terminology, design and preparation of substrate
This European Standard describes the terminology, the design and the preparation of the substrate of
industrial apparatus for the protection against corrosion caused by aggressive media. These industrial apparatus include, for example, reaction tanks, storage tanks, floors in industrial plants, in general for production and handling of chemicals.
The protection is applicable to metallic and concrete structures.
Beside the protection of the apparatus, the protection of the media itself against pollution is also considered in this series of European Standards EN 14879.
A protection against corrosion caused by atmospheric exposure (as for example according to EN ISO 12944-4) is not included in the scope of this series of European Standards EN 14879.
Corrosion protection systems according to this series of European Standards EN 14879 are:
1) Thick coatings normally of 1 mm or more thick.
2) Linings made of pre-fabricated sheets respectively plate materials.
3) Combined linings with tile and brick layers.
Beschichtungen und Auskleidungen aus organischen Werkstoffen zum Schutz von industriellen Anlagen gegen Korrosion durch aggressive Medien - Teil 1: Terminologie, Konstruktion und Vorbereitung des Untergrundes
Diese Europäische Norm beschreibt die Terminologie, die Konstruktion und die Vorbereitung des Untergrun-des
bei industriellen Anlagen zum Schutz gegen Korrosion durch aggressive Medien. Diese industriellen An-lagen
umfassen z. B. Reaktionstanks, Lagertanks, Böden in industriellen Anlagen, die im Allgemeinen für die
Produktion und Handhabung von chemischen Stoffen verwendet werden.
Der Schutz kann auf Metall- und Betonkonstruktionen aufgebracht werden.
Außer dem Schutz der Anlage wird in dieser Europäischen Normenreihe EN 14879 auch der Schutz des
jeweiligen Mediums behandelt.
Der Schutz gegen Korrosion durch atmosphärische Einwirkungen (z. B. nach EN ISO 12944-4) fällt nicht in
den Anwendungsbereich der Europäischen Normenreihe EN 14879.
Korrosionsschutzsysteme nach dieser Europäischen Normenreihe EN 14879 sind:
1) Beschichtungen mit einer Dicke von üblicherweise 1 mm oder mehr;
2) Auskleidungen aus vorgefertigten Bahnen (Halbzeug);
3) kombinierte Auskleidungen mit Plattierungen oder Ausmauerungen.
Systemes 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 1 : Terminologie, conception et préparation des subjectiles
Cette Norme européenne établit la terminologie et décrit la conception et la préparation de subjectiles
d?appareils et installations industriels pour la protection contre la corrosion causée par des milieux agressifs.
Ces appareils et installations industriels comprennent, par exemple, les réacteurs, les réservoirs de stockage,
les sols d?usines, en général pour la production et la manutention de produits chimiques.
La protection est applicable aux structures métalliques et en béton.
Outre la protection des appareils, la protection des fluides eux-memes contre la pollution est également
examinée dans la présente série de Normes européennes EN 14879.
La protection contre la corrosion due a une exposition a l?air ambiant (telle que, par exemple, conformément a
l?EN ISO 12944-4) ne releve pas du domaine d?application des Normes européennes de la série EN 14879.
Les systemes de protection contre la corrosion conformes a la présente série de Normes européennes EN
14879 sont les suivants :
1) les revetements épais, en général d?épaisseur supérieure ou égale a 1 mm ;
2) les revetements rapportés en feuilles préfabriquées de matériaux en plaque ;
3) les revetements rapportés associés a des couches de carreaux et de briques.
Sistemi organskih premazov in prevlek za protikorozijsko zaščito industrijskih naprav in obratov v kemijsko agresivnih pogojih - 1. del: Terminologija, načrtovanje in priprava podlage
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 14879-1:2005
01-december-2005
Sistemi organskih premazov in prevlek za protikorozijsko zaščito industrijskih
naprav in obratov v kemijsko agresivnih pogojih - 1. del: Terminologija,
načrtovanje in priprava podlage
Organic coating systems and linings for protection of industrial apparatus and plants
against corrosion caused by aggressive media - Part 1: Terminology, design and
preparation of substrate
Beschichtungen und Auskleidungen aus organischen Werkstoffen zum Schutz von
industriellen Anlagen gegen Korrosion durch aggressive Medien - Teil 1: Terminologie,
Konstruktion und Vorbereitung des Untergrundes
Systemes 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 1 : Terminologie, conception et préparation des subjectiles
Ta slovenski standard je istoveten z: EN 14879-1:2005
ICS:
01.040.25 Izdelavna tehnika (Slovarji) Manufacturing engineering
(Vocabularies)
25.220.60 Organske prevleke Organic coatings
SIST EN 14879-1:2005 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 14879-1:2005
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SIST EN 14879-1:2005
EUROPEAN STANDARD
EN 14879-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2005
ICS 01.040.25; 25.220.60
English Version
Organic coating systems and linings for protection of industrial
apparatus and plants against corrosion caused by aggressive
media - Part 1: Terminology, design and preparation of substrate
Systèmes de revêtements organiques de peinture et autres Beschichtungen und Auskleidungen aus organischen
revêtements rapportés pour la protection des appareils et Werkstoffen zum Schutz von industriellen Anlagen gegen
installations industriels contre la corrosion par des milieux Korrosion durch aggressive Medien - Teil 1: Terminologie,
agressifs - Partie 1 : Terminologie, conception et Konstruktion und Vorbereitung des Untergrundes
préparation des subjectiles
This European Standard was approved by CEN on 22 July 2005.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards 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 translation
under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official
versions.
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, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 14879-1:2005: E
worldwide for CEN national Members.
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SIST EN 14879-1:2005
EN 14879-1:2005 (E)
Contents
page
Foreword .3
1 Scope .4
2 Normative references .4
3 Terms and definitions.6
4 Design and preparation of substrate.7
4.1 Metallic components.7
4.1.1 Design of metallic components .7
4.1.2 Requirements for metallic substrates .24
4.2 Concrete structures.31
4.2.1 Design of concrete structures .31
4.2.2 Requirements for concrete substrates.33
Bibliography.36
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EN 14879-1:2005 (E)
Foreword
This European Standard (EN 14879-1:2005) has been prepared by Working Group CEN/BT/TF 130 "Organic coat-
ing systems and linings for protection of industrial apparatus and plants against corrosion caused by aggressive
media", the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an identical text or
by endorsement, at the latest by March 2006, and conflicting national standards shall be withdrawn at the latest by
March 2006.
EN 14879 "Organic coating systems and linings for protection of industrial apparatus and plants against 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 lining with tile and brick layers
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following coun-
tries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Esto-
nia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
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SIST EN 14879-1:2005
EN 14879-1:2005 (E)
1 Scope
This European Standard describes the terminology, the design and the preparation of the substrate of
industrial apparatus for the protection against corrosion caused by aggressive media. These industrial apparatus
include, for example, reaction tanks, storage tanks, floors in industrial plants, in general for production and handling
of chemicals.
The protection is applicable to metallic and concrete structures.
Beside the protection of the apparatus, the protection of the media itself against pollution is also considered in this
series of European Standards EN 14879.
A protection against corrosion caused by atmospheric exposure (as for example according to EN ISO 12944-4) is
not included in the scope of this series of European Standards EN 14879.
Corrosion protection systems according to this series of European Standards EN 14879 are:
1) Thick coatings normally of 1 mm or more thick.
2) Linings made of pre-fabricated sheets respectively plate materials.
3) Combined linings with tile and brick layers.
2 Normative references
The following referenced documents are indispensable for the application of this European Standard. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced document
(including any amendments) applies.
EN 206-1, Concrete — Part 1: Specification, performance, production and conformity
EN 1504-1, Products and systems for the protection and repair of concrete structures — Definitions, requirements,
quality control and evaluation of conformity — Part 1: Definitions
EN 1504-2, Products and systems for the protection and repair of concrete structures — Definitions, requirements,
quality control and evaluation of conformity — Part 2: Surface protection systems for concrete
EN 1504-3, Products and systems for the protection and repair of concrete structures — Definitions, requirements,
quality control and evaluation of conformity — Part 3: Structural and non-structural repair
EN 1504-4, Products and systems for the protection and repair of concrete structures — Definitions, requirements,
quality control and evaluation of conformity — Part 4: Structural bonding
EN 1504-5, Products and systems for the protection and repair of concrete structures — Definitions, requirements,
quality control and evaluation of conformity — Part 5: Concrete injection
EN 1504-8, Products and systems for the protection and repair of concrete structures — Definitions, requirements,
quality control and evaluation of conformity — Part 8: Quality control and evaluation of conformity
ENV 1504-9, Products and systems for the protection and repair of concrete structures — Definitions, require-
ments, quality control and evaluation of conformity — Part 9: General principles for the use of products and sys-
tems
EN 1504-10, Products and systems for the protection and repair of concrete structures — Definitions, require-
ments, quality control and evaluation of conformity — Part 10: Site application of products and systems and quality
control of the works
EN 1559-1:1997, Founding — Technical conditions of delivery — Part 1: General
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EN 1990, Eurocode — Basis of structural design
EN 1992-1-1, Eurocode 2: Design of concrete structures — Part 1-1: General rules and rules for buildings
EN 10025 (all parts), Hot rolled products of non-alloy structural steels — General technical delivery conditions
EN 10028-1, Flat products made of steels for pressure purposes — Part 1: General requirements
EN 10028-2, Flat products made of steels for pressure purposes — Part 2: Non-alloy and alloy steels with specified
elevated temperature properties
EN 10088-2, Stainless steels — Part 2: Technical delivery conditions for sheet/plate and strip of corrosion
resisting steels for general and construction purposes
EN 10088-3, Stainless steels — Part 3: Technical delivery conditions for semi-finished products, bars, rods, wire,
sections and bright products of corrosion resisting steels for general and construction purposes
EN 10130+A1, Cold rolled low carbon steel flat products for cold forming — Technical delivery conditions
EN 10139, Cold rolled uncoated mild steel narrow steel strip for cold forming — Technical delivery conditions
EN 10208-1, Steel pipes for pipelines for combustible fluids — Technical delivery conditions — Part 1: Pipes of
requirement class A
EN 10216-2, Seamless steel tubes for pressure purposes — Technical delivery conditions — Part 2: Non-alloy and
alloy steel tubes with specified elevated temperature properties
EN 10217-1, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 1: Non-alloy steel
tubes with specified room temperature properties
EN 10217-2, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 2: Electric welded
non-alloy and alloy steel tubes with specified elevated temperature properties
EN 10217-7, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 7: Stainless steel
tubes
EN 10293, Steel castings for general engineering usesprEN 10296-2, Welded circular steel tubes for mechanical
and general engineering purposes — Technical delivery conditions — Part 2: Stainless steel
prEN 10340, Steel castings for structural uses
EN 10297-2, Seamless circular steel tubes for mechanical and general engineering purposes — Technical delivery
conditions — Part 2: Stainless steel
EN 13813, Screed material and floor screeds — Screed materials — Properties and requirements
prEN 14879-3, Organic coating systems and linings for protection of industrial apparatus and plants against corro-
sion caused by aggressive media — Part 3: Coatings on concrete components
prEN 14879-5, Organic coating systems and linings for protection of industrial apparatus and plants against corro-
sion caused by aggressive media — Part 5: Linings on concrete components
EN ISO 4617:2000, Paints and varnishes — List of equivalent terms (ISO 4617:2000)
EN ISO 4618-2:1999, Paints and varnishes — Terms and definitions for coating materials — Part 2: Special terms
relating to paint characteristics and properties (ISO 4618-2:1999)
EN ISO 4618-3:1999, Paints and varnishes — Terms and definitions for coating materials — Part 3: Surface prepa-
ration and methods of application (ISO 4618-3:1999)
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EN ISO 6520-1, Welding and allied processes — Classification of geometric imperfections in metallic materials —
Part 1: Fusion welding (ISO 6520-1:1998)
EN ISO 7093-1, Plain washers — Large series — Part 1: Product grade A (ISO 7093-1:2000)
EN ISO 12944-4, Paints and varnishes — Corrosion protection of steel structures by protective paint systems —
Part 4: Types of surface and surface preparation (ISO 12944-4:1998)
ISO 4997, Cold-reduced steel sheet of structural quality
ISO 9329 (all parts), Seamless steel tubes for pressure purposes — Technical delivery conditions
ISO 9330-1, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 1: Unalloyed steel
tubes with specified room temperatures properties
3 Terms and definitions
For the purposes of this European Standard, the terms and definitions given in EN ISO 4617:2000, EN ISO 4618-
2:1999, EN ISO 4618-3:1999 and the following apply.
3.1
surface protection system
consists of the materials and material combinations listed in the standards of the series EN 14879, which protect
and seal concrete parts or metallic components in process plants
3.2
coating
produced by applying an organic coating material to protect steel or concrete parts against corrosion
3.3
coating material
liquid to paste like materials applied mainly by means of trowel, brushing, rolling or spraying.
3.4
lining
thermoplastics, duroplastic or rubber applied as sheets or plates which may or may not (thermoplastics) be bonded
to the substrate
3.5
corrosion
reaction of a metallic material or concrete with its environment which produces a measurable change in the mate-
rial and can result in an impairment of the function of a component or a complete system
3.6
corrosion protection
corrosion protection means the isolation of the metallic or concrete material from the attacking medium by applying
coatings or linings
3.7
medium, corrosive medium
environment containing components (chemicals, gases, vapours, etc.) that react with the material during corrosion
3.8
construction joint
joint in a building or building element caused by interruption during the casting of the concrete
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3.9
movement joint
joint that accommodates movement of structural concrete parts caused by the expansion or contraction of the
structure
3.10
dummy joint
joint formed by cutting the concrete surface, thereby determining the location of arising cracks that may form
3.11
tensile strength
for the purposes of this European Standard, the tensile strength is a measure based on the maximum load which a
concrete structure can accommodate when subjected to uniaxial tension
3.12
blast cleaning, abrasive blast cleaning
impingement of a high-kinetic-energy stream of blast cleaning abrasive on to the surface to be prepared
3.13
abrasive, blast cleaning abrasive
solid material intended to be used for abrasive blast-cleaning
3.14
dew point
temperature at which moisture in the air will condense out on to a solid surface
3.15
duroplastic
plastic which, when cured by heat or other means, changes into a substantially infusible and insoluble product.
Contrary to thermoplastics, duroplastic materials remain hard when heated
4 Design and preparation of substrate
4.1 Metallic components
4.1.1 Design of metallic components
4.1.1.1 General
Components to be protected shall be designed and manufactured so that after abrasive blast cleaning the surface
protection can be applied without further treatment or modification.
For this reason, the following particulars shall be established beforehand:
a) coating or lining material;
b) mode of application and thickness of protective layer;
c) site at which coating or lining shall take place.
This results in various requirements for the design which are taken into account in Table 3. The examples given are
partly taken from EN 1708-1.
The design requirements concerning type and thickness of the lining or coating are based on experience gained in
the chemical industry and need not be taken as definitive. Since other designs are equally acceptable, it is recom-
mended that the component manufacturer and the manufacturer of the surface protection reach agreement on the
most suitable design to be used.
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Where components are to receive a new lining or coating, it should be borne in mind that removal of the existing
lining or coating may subject them to stresses.
Metallic base materials and semi-finished products see 4.1.2.
4.1.1.2 Dimensions of components
The dimensions and masses of the components shall be suitable for the intended surface protection process and
shall be selected as a function of the place of manufacture (e.g. construction site), available facilities (e.g. blast-
cleaning equipment, immersion vessels, ovens, autoclaves) as well as transportation and lifting facilities.
4.1.1.3 Surfaces
Component surfaces to be protected shall comply with the requirements specified in 4.1.2.
4.1.1.4 Design criteria
4.1.1.4.1 Rigidity
Components shall be sufficiently rigid so as to preclude any deformation which would result in damage to the
intended surface protection, particularly in the case of rigid linings and coatings. Should bracing be required, this
shall be fitted to the unlined or uncoated side of the component. It is, however, preferable to select appropriate wall
thickness. The permissible deviation is to be agreed upon with the manufacturer of the surface protection.
Deformations may also be caused by handling and machining, e.g. during blast cleaning, as well as by storage,
transportation and installation.
4.1.1.4.2 Accessibility
Surfaces to be protected shall be accessible to hand tools and be readily visible with the exception of components
which are to be lined or coated by such techniques as spreading, flooding or dipping, where adequate protection
and assessment are ensured.
Manholes shall be in accordance with national regulations. For vessels, manholes shall be at least of size DN 600,
see EN ISO 12944-3. Additional air supply and exhaust openings of at least DN 250 should also be provided. Other
larger erection openings, e.g. for scaffolding, may also be required.
4.1.1.4.3 Rotating components
Rotating components, e.g. fan wheels, centrifugal drums shall be balanced prior to the application of the surface
protection.
Counter weights shall be mounted so that the coating or lining can be applied properly.
4.1.1.4.4 Cavities
Cavities shall be avoided or they shall be adequately vented by spot-drilling of the unlined or uncoated side.
Closing of cavities by welding to make them gas-tight is permitted, provided they will be able to withstand the
occurring mechanical stresses (e.g. during vulcanisation) or thermal stresses (e.g. during the removal of the exist-
ing coating or lining).
4.1.1.4.5 Dimensional accuracy
The design of the component shall take into account the thickness of the surface protection to be applied as well as
of possible deviations of thickness and multiple layers of the surface protection. Particular requirements for the
dimensional accuracy of surface protected components, where specified, can only be fulfilled if the components
comply with analogous requirements prior to the application of the surface protection. Dimensional corrections by
means of the surface protection itself and/or its mechanical treatment shall be permitted to a limited extent with due
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consideration given to the material of the surface protection, the coating or lining thickness and the thickness
tolerances specified.
4.1.1.4.6 Protective layer/transition areas
Surfaces subject to stresses under service conditions should be fully lined or coated without any interruption. How-
ever, if in particular cases it is necessary to interrupt the protective layer, suitable design shall be agreed upon with
the manufacturer of the surface protection.
4.1.1.4.7 Joints
4.1.1.4.7.1 Welded joints
Welds shall be continuous on surfaces to be protected. Spot welding shall not be permitted. The surface finish of
welds shall be in accordance with 4.1.2.6.
Welding shall not be permitted after the application of the surface protection.
4.1.1.4.7.2 Bolted connections
Bolted connections shall be avoided in zones which are in contact with the corrosive media. Where this is not pos-
sible, the following solutions can be applied among others:
a) Bolts, screws, nuts and washers shall be of suitable corrosion-resistant materials. An additional soft washer
may be provided to prevent any damage to the surface protection (see Table 3, item 2.1).
b) Where bolts, screws and nuts are to be protected, they may be provided with screw-on caps with gasket (see
Table 3, item 2.3).
c) Where the permissible load of the gasket or surface protection in the joint area is too low, pressure relief shall
be provided and the gasket shall be located in a secondary non-positive connection (see Table 3, item 2.3).
d) Countersunk bolts and screws with applied surface protection.
e) The size of the bolt holes shall be selected as a function of the type and thickness of the surface protection to
be applied. Edges and radii shall be in accordance with 4.1.1.4.9.
4.1.1.4.7.3 Rivet assemblies
Rivet assemblies shall not be permitted.
4.1.1.4.7.4 Flanged connections
The specifications of 4.1.1.4.7.2 shall apply analogously to flanged connections. Threaded flanges shall not be
permitted. Fitting dimensions shall be selected as a function of the thickness of the surface protection, also see
4.1.1.4.5. Edges and radii shall be in accordance with 4.1.1.4.9. Examples of flanged connections are given in
Table 3, items 3.1 to 3.13.
Type, material and permissible surface pressure of the gasket shall be selected as a function of the surface protec-
tion. Soft gaskets should be used for rigid surface protection materials, e.g. hard rubber linings or duroplastic lin-
ings, and rigid gaskets should be used for soft materials.
The design of the gasket shall be such that the sealing pressure can act only on that part of the gasket which is
supported by the component. Where high surface pressure is given, the gasket shall be located in the secondary
non-positive connection. Ring-joint gaskets shall be used for high pressures. For examples of the design see
Table 3.
4.1.1.4.7.5 Other joints
Other continuous joints without gap on the surface to be protected, e.g. soldered or bonded joints, are permissible
as a function of the method of application of the surface protection (e.g. temperature influence).
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4.1.1.4.8 Nozzles and outlets
Nozzles, outlets, connections etc. may be designed as set-in, set-on, butt-welded types or may be extruded with
the limitations as given in Table 3, items 4.1 to 4.9. Their lengths should not exceed the nominal size in
mm + 100 mm. A nominal size of at least DN 100 shall be provided for trowelled and laminate coatings. Where due
to the technical process smaller nominal sizes are required it is allowed to use sleeves instead of the intended
coating. In the case of thermoplastic linings of small nominal sizes (≤ DN 200), the tube inside diameters shall be
selected to suit the respective thermoplastic semi-finished products.
Threaded nozzles are not permitted.
Set-through and weld-in nozzles as well as nozzles with weld-on bends are not permitted (see Table 3, items 4.4,
4.6 and 4.8).
4.1.1.4.9 Edges, fillets and corners
Edges, fillets and corners shall be smoothly finished to the minimum radii specified in Table 1. Flange radii shall be
designed so as not to impair the performance of the flange facings.
Examples of the design are given in Table 3, items 5.1 to 5.6.
The transition from shell to vessel end shall be considered as special design of the fillet. Examples of the design
are given in Table 3, items 6.1 and 6.7.
4.1.1.4.10 Supports and welding attachments
End support rings, holding devices and the like shall be fixed by welding prior to the application of the surface pro-
tection. Attention shall be paid to ensure a uniform load distribution and that the permissible surface pressure is not
exceeded. Also see 4.1.1.4.5, 4.1.1.4.6, 4.1.1.4.7.2 and 4.1.1.4.9. Examples of design see Table 3, items 7.1 and
7.2.
Table 1 — Minimum radii
Minimum radius in mm
Surface protection
Material
Edges Fillets
Powder coatings 2 3
Coatings applied by spraying or brush ap-
3 6
plication
Trowelled coatings 10 15
Laminate coatings 10 10
Duroplastic linings 5 10
Rubber linings 3 + lining
3
a
thickness
Thermoplastic linings 3 + lining
b
3
b
thickness
a
Fillets shall be formed in the base material. In particular cases, it is permissible
upon agreement with the manufacturer of the surface protection system, to
form the minimum radius by further measures, e.g. luting, trowelling.
b
For manufacturing reasons, some thermoplastics may require an edges
design.
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4.1.1.4.11 Pipe components
4.1.1.4.11.1 Straight pipes and pipe fittings
The maximum pipe lengths specified in Table 2 should not be exceeded as a function of nominal size, surface
protection material, surface preparation, method of application and test procedure.
Laminate and trowelled coatings as well as permanently bonded thermoplastic linings can be used with consider-
able limitations, but they are not suitable as equivalent plastic pipes can be used instead. Details are to be agreed
upon with the manufacturer of the surface protection.
Pipe fittings, e.g. bends, tees, reducers shall preferably be short separate elements for example in accordance with
DIN 2848 which are accessible from all sides. Bends > 90° shall normally be subdivided.
4.1.1.4.11.2 Heat exchanger tubes
For weld-in heat exchanger tubes see Table 3, items 8.1 and 8.2.
For partition plates in heat exchangers see Table 3, item 8.3.
4.1.1.4.12 Barrier devices
The protective treatment presupposes that the barrier devices are accessible and can be disassembled to suit the
method of application of the surface protection. Particular attention shall be paid to the sealing faces of the barrier
devices, also see 4.1.1.4.5.
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Table 2 — Recommended maximum lengths of straight pipes and flanged pipe fittings with internal lining
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Table 2 (concluded)
Maximum length l in mm for
Surface protection
DN
b
25 32 40 50 65 80 100 125 150 200 250 300 350 400
500
Coatings applied by flooding or dipping l for DN 6 000
1 1
Powder coatings l for DN 4 000 5 000
1 1
Laminate and trowelled coatings l for DN see 4.1.1.4.11.1 1 200
1 1
l for DN
Thermoplastic linings 1 1 see 4.1.1.4.11.1 1 200
Duroplastic linings l for DN — 2 000 2 500 3 000
1 1
Rubber linings l for DN 2 500 3 000 4 000 5 000 6 000
1 1
Coating or lining (for Duroplastic lining l for DN — 1 000 2 000
2 1
laminate and
l for DN
Optional 2 1 2 000 3 000
trowelled coating as
Duroplastic lining l for DN Flanged bends
3 1
well as thermoplastic
— — 150 180 220 255 320 385 440 570 710 830 910 1 0301 300
lining, see
Optional l for DN 110 130 150 180 220 255 320 385 440 570 710 830 910 1 0301 300
4.1.1.4.11.1) 3 1
Duroplastic lining l for DN Tees
4 2
— — 150 180 140 165 205 245 285 365 450 525 600 680 830
Optional l for DN 110 130 150 180 220 255 320 optional
4 2
a
l for DN Tees
Duroplastic lining 5 2
— — 150 180 140 165 205 245 285 365 450 525 600 680 830
a
l for DN
5 2 Tees
Optional
110 130 150 180 220 255 320 385 440 570 710 830 910 1 0301 300
a
The values specified apply to nozzles (or branches) DN =
...
SLOVENSKI STANDARD
SIST EN 14879-1:2005
01-december-2005
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QDSUDYLQREUDWRYYNHPLMVNRDJUHVLYQLKSRJRMLK±GHO 7HUPLQRORJLMDREOLNDLQ
SULSUDYDSRGODJH
Organic coating systems and linings for protection of industrial apparatus and plants
against corrosion caused by aggressive media - Part 1: Terminology, design and
preparation of substrate
Beschichtungen und Auskleidungen aus organischen Werkstoffen zum Schutz von
industriellen Anlagen gegen Korrosion durch aggressive Medien - Teil 1: Terminologie,
Konstruktion und Vorbereitung des Untergrundes
Systemes 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 1 : Terminologie, conception et préparation des subjectiles
Ta slovenski standard je istoveten z: EN 14879-1:2005
ICS:
01.040.25 Izdelavna tehnika (Slovarji) Manufacturing engineering
(Vocabularies)
25.220.60 Organske prevleke Organic coatings
SIST EN 14879-1:2005 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 14879-1:2005
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SIST EN 14879-1:2005
EUROPEAN STANDARD
EN 14879-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2005
ICS 01.040.25; 25.220.60
English Version
Organic coating systems and linings for protection of industrial
apparatus and plants against corrosion caused by aggressive
media - Part 1: Terminology, design and preparation of substrate
Systèmes de revêtements organiques de peinture et autres Beschichtungen und Auskleidungen aus organischen
revêtements rapportés pour la protection des appareils et Werkstoffen zum Schutz von industriellen Anlagen gegen
installations industriels contre la corrosion par des milieux Korrosion durch aggressive Medien - Teil 1: Terminologie,
agressifs - Partie 1 : Terminologie, conception et Konstruktion und Vorbereitung des Untergrundes
préparation des subjectiles
This European Standard was approved by CEN on 22 July 2005.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards 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 translation
under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official
versions.
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, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 14879-1:2005: E
worldwide for CEN national Members.
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SIST EN 14879-1:2005
EN 14879-1:2005 (E)
Contents
page
Foreword .3
1 Scope .4
2 Normative references .4
3 Terms and definitions.6
4 Design and preparation of substrate.7
4.1 Metallic components.7
4.1.1 Design of metallic components .7
4.1.2 Requirements for metallic substrates .24
4.2 Concrete structures.31
4.2.1 Design of concrete structures .31
4.2.2 Requirements for concrete substrates.33
Bibliography.36
2
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SIST EN 14879-1:2005
EN 14879-1:2005 (E)
Foreword
This European Standard (EN 14879-1:2005) has been prepared by Working Group CEN/BT/TF 130 "Organic coat-
ing systems and linings for protection of industrial apparatus and plants against corrosion caused by aggressive
media", the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an identical text or
by endorsement, at the latest by March 2006, and conflicting national standards shall be withdrawn at the latest by
March 2006.
EN 14879 "Organic coating systems and linings for protection of industrial apparatus and plants against 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 lining with tile and brick layers
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following coun-
tries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Esto-
nia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
3
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SIST EN 14879-1:2005
EN 14879-1:2005 (E)
1 Scope
This European Standard describes the terminology, the design and the preparation of the substrate of
industrial apparatus for the protection against corrosion caused by aggressive media. These industrial apparatus
include, for example, reaction tanks, storage tanks, floors in industrial plants, in general for production and handling
of chemicals.
The protection is applicable to metallic and concrete structures.
Beside the protection of the apparatus, the protection of the media itself against pollution is also considered in this
series of European Standards EN 14879.
A protection against corrosion caused by atmospheric exposure (as for example according to EN ISO 12944-4) is
not included in the scope of this series of European Standards EN 14879.
Corrosion protection systems according to this series of European Standards EN 14879 are:
1) Thick coatings normally of 1 mm or more thick.
2) Linings made of pre-fabricated sheets respectively plate materials.
3) Combined linings with tile and brick layers.
2 Normative references
The following referenced documents are indispensable for the application of this European Standard. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced document
(including any amendments) applies.
EN 206-1, Concrete — Part 1: Specification, performance, production and conformity
EN 1504-1, Products and systems for the protection and repair of concrete structures — Definitions, requirements,
quality control and evaluation of conformity — Part 1: Definitions
EN 1504-2, Products and systems for the protection and repair of concrete structures — Definitions, requirements,
quality control and evaluation of conformity — Part 2: Surface protection systems for concrete
EN 1504-3, Products and systems for the protection and repair of concrete structures — Definitions, requirements,
quality control and evaluation of conformity — Part 3: Structural and non-structural repair
EN 1504-4, Products and systems for the protection and repair of concrete structures — Definitions, requirements,
quality control and evaluation of conformity — Part 4: Structural bonding
EN 1504-5, Products and systems for the protection and repair of concrete structures — Definitions, requirements,
quality control and evaluation of conformity — Part 5: Concrete injection
EN 1504-8, Products and systems for the protection and repair of concrete structures — Definitions, requirements,
quality control and evaluation of conformity — Part 8: Quality control and evaluation of conformity
ENV 1504-9, Products and systems for the protection and repair of concrete structures — Definitions, require-
ments, quality control and evaluation of conformity — Part 9: General principles for the use of products and sys-
tems
EN 1504-10, Products and systems for the protection and repair of concrete structures — Definitions, require-
ments, quality control and evaluation of conformity — Part 10: Site application of products and systems and quality
control of the works
EN 1559-1:1997, Founding — Technical conditions of delivery — Part 1: General
4
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SIST EN 14879-1:2005
EN 14879-1:2005 (E)
EN 1990, Eurocode — Basis of structural design
EN 1992-1-1, Eurocode 2: Design of concrete structures — Part 1-1: General rules and rules for buildings
EN 10025 (all parts), Hot rolled products of non-alloy structural steels — General technical delivery conditions
EN 10028-1, Flat products made of steels for pressure purposes — Part 1: General requirements
EN 10028-2, Flat products made of steels for pressure purposes — Part 2: Non-alloy and alloy steels with specified
elevated temperature properties
EN 10088-2, Stainless steels — Part 2: Technical delivery conditions for sheet/plate and strip of corrosion
resisting steels for general and construction purposes
EN 10088-3, Stainless steels — Part 3: Technical delivery conditions for semi-finished products, bars, rods, wire,
sections and bright products of corrosion resisting steels for general and construction purposes
EN 10130+A1, Cold rolled low carbon steel flat products for cold forming — Technical delivery conditions
EN 10139, Cold rolled uncoated mild steel narrow steel strip for cold forming — Technical delivery conditions
EN 10208-1, Steel pipes for pipelines for combustible fluids — Technical delivery conditions — Part 1: Pipes of
requirement class A
EN 10216-2, Seamless steel tubes for pressure purposes — Technical delivery conditions — Part 2: Non-alloy and
alloy steel tubes with specified elevated temperature properties
EN 10217-1, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 1: Non-alloy steel
tubes with specified room temperature properties
EN 10217-2, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 2: Electric welded
non-alloy and alloy steel tubes with specified elevated temperature properties
EN 10217-7, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 7: Stainless steel
tubes
EN 10293, Steel castings for general engineering usesprEN 10296-2, Welded circular steel tubes for mechanical
and general engineering purposes — Technical delivery conditions — Part 2: Stainless steel
prEN 10340, Steel castings for structural uses
EN 10297-2, Seamless circular steel tubes for mechanical and general engineering purposes — Technical delivery
conditions — Part 2: Stainless steel
EN 13813, Screed material and floor screeds — Screed materials — Properties and requirements
prEN 14879-3, Organic coating systems and linings for protection of industrial apparatus and plants against corro-
sion caused by aggressive media — Part 3: Coatings on concrete components
prEN 14879-5, Organic coating systems and linings for protection of industrial apparatus and plants against corro-
sion caused by aggressive media — Part 5: Linings on concrete components
EN ISO 4617:2000, Paints and varnishes — List of equivalent terms (ISO 4617:2000)
EN ISO 4618-2:1999, Paints and varnishes — Terms and definitions for coating materials — Part 2: Special terms
relating to paint characteristics and properties (ISO 4618-2:1999)
EN ISO 4618-3:1999, Paints and varnishes — Terms and definitions for coating materials — Part 3: Surface prepa-
ration and methods of application (ISO 4618-3:1999)
5
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SIST EN 14879-1:2005
EN 14879-1:2005 (E)
EN ISO 6520-1, Welding and allied processes — Classification of geometric imperfections in metallic materials —
Part 1: Fusion welding (ISO 6520-1:1998)
EN ISO 7093-1, Plain washers — Large series — Part 1: Product grade A (ISO 7093-1:2000)
EN ISO 12944-4, Paints and varnishes — Corrosion protection of steel structures by protective paint systems —
Part 4: Types of surface and surface preparation (ISO 12944-4:1998)
ISO 4997, Cold-reduced steel sheet of structural quality
ISO 9329 (all parts), Seamless steel tubes for pressure purposes — Technical delivery conditions
ISO 9330-1, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 1: Unalloyed steel
tubes with specified room temperatures properties
3 Terms and definitions
For the purposes of this European Standard, the terms and definitions given in EN ISO 4617:2000, EN ISO 4618-
2:1999, EN ISO 4618-3:1999 and the following apply.
3.1
surface protection system
consists of the materials and material combinations listed in the standards of the series EN 14879, which protect
and seal concrete parts or metallic components in process plants
3.2
coating
produced by applying an organic coating material to protect steel or concrete parts against corrosion
3.3
coating material
liquid to paste like materials applied mainly by means of trowel, brushing, rolling or spraying.
3.4
lining
thermoplastics, duroplastic or rubber applied as sheets or plates which may or may not (thermoplastics) be bonded
to the substrate
3.5
corrosion
reaction of a metallic material or concrete with its environment which produces a measurable change in the mate-
rial and can result in an impairment of the function of a component or a complete system
3.6
corrosion protection
corrosion protection means the isolation of the metallic or concrete material from the attacking medium by applying
coatings or linings
3.7
medium, corrosive medium
environment containing components (chemicals, gases, vapours, etc.) that react with the material during corrosion
3.8
construction joint
joint in a building or building element caused by interruption during the casting of the concrete
6
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SIST EN 14879-1:2005
EN 14879-1:2005 (E)
3.9
movement joint
joint that accommodates movement of structural concrete parts caused by the expansion or contraction of the
structure
3.10
dummy joint
joint formed by cutting the concrete surface, thereby determining the location of arising cracks that may form
3.11
tensile strength
for the purposes of this European Standard, the tensile strength is a measure based on the maximum load which a
concrete structure can accommodate when subjected to uniaxial tension
3.12
blast cleaning, abrasive blast cleaning
impingement of a high-kinetic-energy stream of blast cleaning abrasive on to the surface to be prepared
3.13
abrasive, blast cleaning abrasive
solid material intended to be used for abrasive blast-cleaning
3.14
dew point
temperature at which moisture in the air will condense out on to a solid surface
3.15
duroplastic
plastic which, when cured by heat or other means, changes into a substantially infusible and insoluble product.
Contrary to thermoplastics, duroplastic materials remain hard when heated
4 Design and preparation of substrate
4.1 Metallic components
4.1.1 Design of metallic components
4.1.1.1 General
Components to be protected shall be designed and manufactured so that after abrasive blast cleaning the surface
protection can be applied without further treatment or modification.
For this reason, the following particulars shall be established beforehand:
a) coating or lining material;
b) mode of application and thickness of protective layer;
c) site at which coating or lining shall take place.
This results in various requirements for the design which are taken into account in Table 3. The examples given are
partly taken from EN 1708-1.
The design requirements concerning type and thickness of the lining or coating are based on experience gained in
the chemical industry and need not be taken as definitive. Since other designs are equally acceptable, it is recom-
mended that the component manufacturer and the manufacturer of the surface protection reach agreement on the
most suitable design to be used.
7
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SIST EN 14879-1:2005
EN 14879-1:2005 (E)
Where components are to receive a new lining or coating, it should be borne in mind that removal of the existing
lining or coating may subject them to stresses.
Metallic base materials and semi-finished products see 4.1.2.
4.1.1.2 Dimensions of components
The dimensions and masses of the components shall be suitable for the intended surface protection process and
shall be selected as a function of the place of manufacture (e.g. construction site), available facilities (e.g. blast-
cleaning equipment, immersion vessels, ovens, autoclaves) as well as transportation and lifting facilities.
4.1.1.3 Surfaces
Component surfaces to be protected shall comply with the requirements specified in 4.1.2.
4.1.1.4 Design criteria
4.1.1.4.1 Rigidity
Components shall be sufficiently rigid so as to preclude any deformation which would result in damage to the
intended surface protection, particularly in the case of rigid linings and coatings. Should bracing be required, this
shall be fitted to the unlined or uncoated side of the component. It is, however, preferable to select appropriate wall
thickness. The permissible deviation is to be agreed upon with the manufacturer of the surface protection.
Deformations may also be caused by handling and machining, e.g. during blast cleaning, as well as by storage,
transportation and installation.
4.1.1.4.2 Accessibility
Surfaces to be protected shall be accessible to hand tools and be readily visible with the exception of components
which are to be lined or coated by such techniques as spreading, flooding or dipping, where adequate protection
and assessment are ensured.
Manholes shall be in accordance with national regulations. For vessels, manholes shall be at least of size DN 600,
see EN ISO 12944-3. Additional air supply and exhaust openings of at least DN 250 should also be provided. Other
larger erection openings, e.g. for scaffolding, may also be required.
4.1.1.4.3 Rotating components
Rotating components, e.g. fan wheels, centrifugal drums shall be balanced prior to the application of the surface
protection.
Counter weights shall be mounted so that the coating or lining can be applied properly.
4.1.1.4.4 Cavities
Cavities shall be avoided or they shall be adequately vented by spot-drilling of the unlined or uncoated side.
Closing of cavities by welding to make them gas-tight is permitted, provided they will be able to withstand the
occurring mechanical stresses (e.g. during vulcanisation) or thermal stresses (e.g. during the removal of the exist-
ing coating or lining).
4.1.1.4.5 Dimensional accuracy
The design of the component shall take into account the thickness of the surface protection to be applied as well as
of possible deviations of thickness and multiple layers of the surface protection. Particular requirements for the
dimensional accuracy of surface protected components, where specified, can only be fulfilled if the components
comply with analogous requirements prior to the application of the surface protection. Dimensional corrections by
means of the surface protection itself and/or its mechanical treatment shall be permitted to a limited extent with due
8
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EN 14879-1:2005 (E)
consideration given to the material of the surface protection, the coating or lining thickness and the thickness
tolerances specified.
4.1.1.4.6 Protective layer/transition areas
Surfaces subject to stresses under service conditions should be fully lined or coated without any interruption. How-
ever, if in particular cases it is necessary to interrupt the protective layer, suitable design shall be agreed upon with
the manufacturer of the surface protection.
4.1.1.4.7 Joints
4.1.1.4.7.1 Welded joints
Welds shall be continuous on surfaces to be protected. Spot welding shall not be permitted. The surface finish of
welds shall be in accordance with 4.1.2.6.
Welding shall not be permitted after the application of the surface protection.
4.1.1.4.7.2 Bolted connections
Bolted connections shall be avoided in zones which are in contact with the corrosive media. Where this is not pos-
sible, the following solutions can be applied among others:
a) Bolts, screws, nuts and washers shall be of suitable corrosion-resistant materials. An additional soft washer
may be provided to prevent any damage to the surface protection (see Table 3, item 2.1).
b) Where bolts, screws and nuts are to be protected, they may be provided with screw-on caps with gasket (see
Table 3, item 2.3).
c) Where the permissible load of the gasket or surface protection in the joint area is too low, pressure relief shall
be provided and the gasket shall be located in a secondary non-positive connection (see Table 3, item 2.3).
d) Countersunk bolts and screws with applied surface protection.
e) The size of the bolt holes shall be selected as a function of the type and thickness of the surface protection to
be applied. Edges and radii shall be in accordance with 4.1.1.4.9.
4.1.1.4.7.3 Rivet assemblies
Rivet assemblies shall not be permitted.
4.1.1.4.7.4 Flanged connections
The specifications of 4.1.1.4.7.2 shall apply analogously to flanged connections. Threaded flanges shall not be
permitted. Fitting dimensions shall be selected as a function of the thickness of the surface protection, also see
4.1.1.4.5. Edges and radii shall be in accordance with 4.1.1.4.9. Examples of flanged connections are given in
Table 3, items 3.1 to 3.13.
Type, material and permissible surface pressure of the gasket shall be selected as a function of the surface protec-
tion. Soft gaskets should be used for rigid surface protection materials, e.g. hard rubber linings or duroplastic lin-
ings, and rigid gaskets should be used for soft materials.
The design of the gasket shall be such that the sealing pressure can act only on that part of the gasket which is
supported by the component. Where high surface pressure is given, the gasket shall be located in the secondary
non-positive connection. Ring-joint gaskets shall be used for high pressures. For examples of the design see
Table 3.
4.1.1.4.7.5 Other joints
Other continuous joints without gap on the surface to be protected, e.g. soldered or bonded joints, are permissible
as a function of the method of application of the surface protection (e.g. temperature influence).
9
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EN 14879-1:2005 (E)
4.1.1.4.8 Nozzles and outlets
Nozzles, outlets, connections etc. may be designed as set-in, set-on, butt-welded types or may be extruded with
the limitations as given in Table 3, items 4.1 to 4.9. Their lengths should not exceed the nominal size in
mm + 100 mm. A nominal size of at least DN 100 shall be provided for trowelled and laminate coatings. Where due
to the technical process smaller nominal sizes are required it is allowed to use sleeves instead of the intended
coating. In the case of thermoplastic linings of small nominal sizes (≤ DN 200), the tube inside diameters shall be
selected to suit the respective thermoplastic semi-finished products.
Threaded nozzles are not permitted.
Set-through and weld-in nozzles as well as nozzles with weld-on bends are not permitted (see Table 3, items 4.4,
4.6 and 4.8).
4.1.1.4.9 Edges, fillets and corners
Edges, fillets and corners shall be smoothly finished to the minimum radii specified in Table 1. Flange radii shall be
designed so as not to impair the performance of the flange facings.
Examples of the design are given in Table 3, items 5.1 to 5.6.
The transition from shell to vessel end shall be considered as special design of the fillet. Examples of the design
are given in Table 3, items 6.1 and 6.7.
4.1.1.4.10 Supports and welding attachments
End support rings, holding devices and the like shall be fixed by welding prior to the application of the surface pro-
tection. Attention shall be paid to ensure a uniform load distribution and that the permissible surface pressure is not
exceeded. Also see 4.1.1.4.5, 4.1.1.4.6, 4.1.1.4.7.2 and 4.1.1.4.9. Examples of design see Table 3, items 7.1 and
7.2.
Table 1 — Minimum radii
Minimum radius in mm
Surface protection
Material
Edges Fillets
Powder coatings 2 3
Coatings applied by spraying or brush ap-
3 6
plication
Trowelled coatings 10 15
Laminate coatings 10 10
Duroplastic linings 5 10
Rubber linings 3 + lining
3
a
thickness
Thermoplastic linings 3 + lining
b
3
b
thickness
a
Fillets shall be formed in the base material. In particular cases, it is permissible
upon agreement with the manufacturer of the surface protection system, to
form the minimum radius by further measures, e.g. luting, trowelling.
b
For manufacturing reasons, some thermoplastics may require an edges
design.
10
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EN 14879-1:2005 (E)
4.1.1.4.11 Pipe components
4.1.1.4.11.1 Straight pipes and pipe fittings
The maximum pipe lengths specified in Table 2 should not be exceeded as a function of nominal size, surface
protection material, surface preparation, method of application and test procedure.
Laminate and trowelled coatings as well as permanently bonded thermoplastic linings can be used with consider-
able limitations, but they are not suitable as equivalent plastic pipes can be used instead. Details are to be agreed
upon with the manufacturer of the surface protection.
Pipe fittings, e.g. bends, tees, reducers shall preferably be short separate elements for example in accordance with
DIN 2848 which are accessible from all sides. Bends > 90° shall normally be subdivided.
4.1.1.4.11.2 Heat exchanger tubes
For weld-in heat exchanger tubes see Table 3, items 8.1 and 8.2.
For partition plates in heat exchangers see Table 3, item 8.3.
4.1.1.4.12 Barrier devices
The protective treatment presupposes that the barrier devices are accessible and can be disassembled to suit the
method of application of the surface protection. Particular attention shall be paid to the sealing faces of the barrier
devices, also see 4.1.1.4.5.
11
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SIST EN 14879-1:2005
EN 14879-1:2005 (E)
Table 2 — Recommended maximum lengths of straight pipes and flanged pipe fittings with internal lining
12
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SIST EN 14879-1:2005
EN 14879-1:2005 (E)
Table 2 (concluded)
Maximum length l in mm for
Surface protection
DN
b
25 32 40 50 65 80 100 125 150 200 250 300 350 400
500
Coatings applied by flooding or dipping l for DN 6 000
1 1
Powder coatings l for DN 4 000 5 000
1 1
Laminate and trowelled coatings l for DN see 4.1.1.4.11.1 1 200
1 1
l for DN
Thermoplastic linings 1 1 see 4.1.1.4.11.1 1 200
Duroplastic linings l for DN — 2 000 2 500 3 000
1 1
Rubber linings l for DN 2 500 3 000 4 000 5 000 6 000
1 1
Coating or lining (for Duroplastic lining l for DN — 1 000 2 000
2 1
laminate and
l for DN
Optional 2 1 2 000 3 000
trowelled coating as
Duroplastic lining l for DN Flanged bends
3 1
well as thermoplastic
— — 150 180 220 255 320 385 440 570 710 830 910 1 0301 300
lining, see
Optional l for DN 110 130 150 180 220 255 320 385 440 570 710 830 910 1 0301 300
4.1.1.4.11.1) 3 1
Duroplastic lining l for DN Tees
4 2
— — 150 180 140 165 205 245 285 365 450 525 600 680 830
Optional l for DN 110 130 150 180 220 255 320 optional
4 2
a
l for DN Tees
Duroplastic lining 5 2
— — 150 180 140 165 205 245 285 365 450 525 600 680 830
a
l for DN
5 2 Tees
Optional
110 130 150 180 220 255 320 385 440 570 710 830 910 1 0301 300
a
The values specified apply to nozzles
...
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