EN 14868:2005

Protection of metallic materials against corrosion - Guidance on the assessment of corrosion likelihood in closed water circulation systems

This European Standard gives a review of influencing factors on the corrosion likelihood of metallic components (pipes, tanks, vessels, heat exchangers, pumps etc.) in water circulation systems in buildings.
The water circulation systems considered are:
   heating systems (up to 110 °C service water temperature);
   cooling and chilling systems;
which are filled with potable water or water of similar composition according to the Directive 98/83/EC.
NOTE 1   Sanitary hot water systems with a re-circulation loop are not considered in this European Standard as they are not really closed system, because the water is continually renewed. The corrosion likelihood of these systems is discussed in EN 12502 Parts 1 to 5 [1],  [2],  [3],  [4],  [5].
NOTE 2   Cooling systems with open atmospheric towers are not considered in this European Standard because fresh water is generally added to the system periodically to compensate for losses by evaporation or blow-down.
NOTE 3   Heating systems in buildings, connected to district heating systems without an intervening heat exchanger, are not considered in this European Standard. However, local heating systems, where several buildings are heated by one boiler plant, are included.

Korrosionsschutz metallischer Werkstoffe - Leitfaden für die Ermittlung der Korrosionswahrscheinlichkeit in geschlossenen Wasser-Zirkulationssystemen

Diese Europäische Norm gibt einen Überblick über die Einflussfaktoren der durch Innenkorrosion bedingten Korrosionswahrscheinlichkeit metallischer Bauteile (Rohre, Behälter, Kessel, Wärmeaustauscher, Pumpen usw.) in Wasser-Rezirkulationssystemen in Gebäuden.
Bei den betrachteten Wasser-Rezirkulationssystemen handelt es sich um:
-   Heizsysteme (bis zu 110 °C Betriebstemperatur des Wassers);
-   Kühl- und Kältesysteme,
die mit Trinkwasser entsprechend der EU Direktive 98/83/EG oder Wässern ähnlicher Zusammensetzung gefüllt sind.
ANMERKUNG 1   Warmwasser-Zirkulationssysteme der Sanitärhausinstallation werden in dieser Norm nicht betrachtet, da sie keine geschlossenen Systeme darstellen, weil das Wasser regelmäßig erneuert wird. Die Korrosionswahrscheinlichkeit in derartigen Systemen wird in EN 12502 Teil 1 bis 5 behandelt [1], [2], [3], [4], [5].
ANMERKUNG 2   Kühlsysteme mit zur Atmosphäre hin offenen Kühltürmen werden in dieser Norm nicht behandelt, weil hier dem System regelmäßig Frischwasser zugesetzt werden muss, um die Wasserverluste durch Verdunstung oder Absalzen auszugleichen.
ANMERKUNG 3   Heizsysteme in Gebäuden, die ohne einen zwischengeschalteten Wärmeaustauscher direkt mit Fernwärmesystemen verbunden sind, werden in dieser Norm nicht  betrachtet. Eingeschlossen sind jedoch örtliche Heizsysteme, in denen mehrere Gebäude durch ein Heizwerk versorgt werden.

Protection des matériaux métalliques contre la corrosion - Recommandations pour l'évaluation du risque de corrosion dans les systèmes fermés à recirculation d'eau

Protikorozijska zaščita kovinskih materialov – Navodilo za ocenjevanje verjetnosti nastanka korozije v zaprtem sistemu vodnega kroženja

General Information

• Status: Published
• Publication Date: 16-Aug-2005
• Withdrawal Date: 27-Feb-2006
• ICS: 77.060 - Corrosion of metals
• Technical Committee: CEN/TC 262 - Metallic and other inorganic coatings
• Drafting Committee: CEN/TC 262/WG 10 - Corrosion likelihood
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Completion Date: 11-Dec-2017
• Ref Project: SIST EN 14868:2005 - Protection of metallic materials against corrosion - Guidance on the assessment of corrosion likelihood in closed water circulation systems

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 14868:2005
01-november-2005
3URWLNRUR]LMVND]DãþLWDNRYLQVNLKPDWHULDORY±1DYRGLOR]DRFHQMHYDQMHYHUMHWQRVWL
QDVWDQNDNRUR]LMHY]DSUWHPVLVWHPXYRGQHJDNURåHQMD
Protection of metallic materials against corrosion - Guidance on the assessment of
corrosion likelihood in closed water circulation systems
Korrosionsschutz metallischer Werkstoffe - Leitfaden für die Ermittlung der
Korrosionswahrscheinlichkeit in geschlossenen Wasser-Zirkulationssystemen
Protection des matériaux métalliques contre la corrosion - Recommandations pour
l'évaluation du risque de corrosion dans les systemes fermés a recirculation d'eau
Ta slovenski standard je istoveten z: EN 14868:2005
ICS:
77.060 Korozija kovin Corrosion of metals
SIST EN 14868:2005 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 14868:2005

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SIST EN 14868:2005
EUROPEAN STANDARD
EN 14868
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2005
ICS 77.060

English Version
Protection of metallic materials against corrosion - Guidance on
the assessment of corrosion likelihood in closed water
circulation systems
Protection des matériaux métalliques contre la corrosion - Korrosionsschutz metallischer Werkstoffe - Leitfaden für
Recommandations pour l'évaluation du risque de corrosion die Ermittlung der Korrosionswahrscheinlichkeit in
dans les systèmes fermés à recirculation d'eau geschlossenen Wasser-Zirkulationssystemen
This European Standard was approved by CEN on 8 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 14868:2005: E
worldwide for CEN national Members.

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SIST EN 14868:2005
EN 14868:2005 (E)
Contents page
Foreword .3
Introduction.4
1 Scope .5
2 Normative references .5
3 Terms and definitions.5
4 Symbols and abbreviations.6
5 Types of corrosion.6
6 Role of oxygen .7
7 Microbial corrosion.8
8 Corrosion damage in Case I conditions.8
9 Corrosion damages in Case II systems.11
10 Corrosion protection methods.15
Annex A (informative) Important corrosion reactions in the systems under consideration.19

Bibliography.
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