EN 14276-2:2007+A1:2011
(Main)Pressure equipment for refrigerating systems and heat pumps - Part 2: Piping - General requirements
Pressure equipment for refrigerating systems and heat pumps - Part 2: Piping - General requirements
1.1 This European Standard specifies the requirements for material, design, manufacturing, testing and documentation for stationary piping intended for use in refrigerating systems, heat pumps and secondary cooling and heating systems. These refrigerating systems and heat pump systems are referenced in this standard as refrigerating systems as defined in EN 378-1.
1.2 This European Standard applies to piping including welded or brazed attachments up to and including the flanges, screwed, welded or brazed connectors or to the edge to be welded or brazed at the first circumferential joint connecting piping or other elements.
1.3 This European Standard applies to the selection, application and installation of safety accessories intended to protect the piping during the various phases of the refrigeration cycle.
1.4 This European Standard applies to the following piping:
- heat exchanger consisting of piping for the purpose of cooling or heating air where piping aspects are predominant;
- piping incorporated into an assembly (e.g. self contained system, condensing unit);
- field erected piping.
1.5 This European Standard applies to piping with an internal pressure down to - 1 bar, to account for the evacuation of the piping prior to charging with refrigerant.
1.6 This European Standard applies to both the mechanical loading conditions and thermal conditions as defined in EN 13480-3 associated with refrigerating systems. It applies to piping subject to the maximum allowable temperatures for which nominal design stresses for materials are derived using EN 14276-1 or as specified in this European Standard. In addition piping designed to this standard needs to have a maximum design temperature not exceeding 200 °C and a maximum design pressure not exceeding 64 bar. Outside of these limits, EN 13480 should be used for the design construction and inspection of the piping. Under these circumstances the unique nature of a refrigerating plant, as indicated in the introdu
Druckgeräte für Kälteanlagen und Wärmepumpen - Teil 2: Rohrleitungen - Allgemeine Anforderungen
1.1 Diese Europäische Norm legt die Anforderungen an Werkstoffe, Konstruktion, Herstellung, Prüfung und Dokumentation für ortsfeste Rohrleitungen für Kälteanlagen, Wärmepumpen und indirekte Kühl- und Heiz-systeme fest. Diese Kälteanlagen und Wärmepumpen werden in der vorliegenden Norm als Kälteanlagen nach EN 378-1 bezeichnet. 1.2 Diese Europäische Norm gilt für Rohrleitungen mit angeschweißten oder angelöteten Bauteilen, einschließlich Flansche, Schraub-, Schweiß- oder Lötverbindungen oder der ersten Schweiß- oder Lötnaht für den Anschluss von Rohrleitungen oder anderen Teilen. 1.3 Diese Europäische Norm gilt für die Auswahl, Anwendung und den Einbau von Ausrüstungsteilen mit Sicherheitsfunktion zum Schutz der Rohrleitungen während der verschiedenen Phasen des Kältemittelkreislaufs. 1.4 Diese Europäische Norm gilt für folgende Rohrleitungen: ⎯ Wärmeaustauscher, bestehend aus Rohrleitungen zum Kühlen oder Erhitzen von Luft, bei maßgebenden Aspekten von Rohrleitungen; ⎯ Rohrleitungen innerhalb einer Baugruppe (z. B. Kältesatz, Verdichtungssatz); ⎯ vor Ort montierte Rohrleitungen. 1.5 Diese Europäische Norm gilt für Rohrleitungen mit einem Innendruck bis – 1 bar, um der Entleerung der Rohrleitung vor dem Befüllen mit Kältemittel Rechnung zu tragen. 1.6 Diese Europäische Norm gilt sowohl für die mechanischen Belastungen als auch die thermischen Beanspruchungen nach den Festlegungen in EN 13480-3, die im Zusammenhang mit Kälteanlagen auftreten. Sie gilt für Rohrleitungen mit den maximal zulässigen Temperaturen, für die die zulässigen Nennspannungen für die Werkstoffe nach !EN 14276-1:2006+A1" abgeleitet werden oder in dieser Europäischen Norm festgelegt sind. Ferner müssen Rohrleitungen, die nach dieser Norm ausgelegt sind, eine maximale Auslegungstemperatur von 200 °C und einen maximalen Auslegungsdruck von 64 bar aufweisen. Außerhalb dieser Grenzwerte sollte für die Konstruktion, Herstellung und Prüfung der Rohrleitungen EN 13480 herangezogen werden.
Equipements sous pression pour systèmes de réfrigération et pompes à chaleur - Partie 2: Tuyauteries - Exigences générales
1.1 La présente Norme européenne spécifie les exigences relatives aux matériaux, à la conception,
à la fabrication, aux essais et à la documentation concernant les tuyauteries fixes destinées à être utilisées dans des
systèmes de réfrigération, des pompes à chaleur et des systèmes de refroidissement et de chauffage secondaires.
Ces systèmes de réfrigération et systèmes de pompes à chaleur sont désignés dans la présente norme par le terme
systèmes de réfrigération défini dans l’EN 378-1.
1.2 La présente Norme européenne s’applique aux tuyauteries comportant les fixations soudées ou brasées
y compris les brides, les raccords vissés, soudés ou brasés ou, d’autre part, au bord à souder ou à braser au premier
joint circulaire de raccordement à la tuyauterie ou à d’autres éléments.
1.3 La présente Norme européenne traite de la sélection, de l’application et de l’installation des accessoires
de sécurité destinés à protéger les tuyauteries sous pression au cours des diverses phases du cycle de réfrigération.
1.4 La présente Norme européenne s’applique aux tuyauteries suivantes :
- les échangeurs thermiques constitués de tuyaux et destinés au refroidissement ou au réchauffement de l'air,
où les aspects liés à la tuyauterie prédominent ;
- les tuyauteries incorporées dans un ensemble (par exemple système autonome, unité de condensation) ;
- les tuyauteries montées sur site.
1.5 La présente Norme européenne s’applique aux tuyauteries soumises à une pression intérieure jusqu’à – 1 bar
nécessaire pour réaliser la vidange de la tuyauterie avant de charger le fluide frigorigène.
1.6 La présente Norme européenne concerne les conditions de chargement mécanique et les conditions
thermiques définies dans l’EN 13480-3 associées aux systèmes de réfrigération. Elle s’applique aux tuyauteries
soumises aux températures maximales admissibles pour lesquelles des contraintes nominales de calcul applicables
aux matériaux sont déterminées à l’aide de l’!EN 14276-1:2006+A1" o
Tlačna oprema za hladilne sisteme in toplotne črpalke - 2. del: Cevovodi - Splošne zahteve
Ta evropski standard določa zahteve za material, načrtovanje, proizvodnjo, preskušanje in dokumentacijo fiksnih cevovodov za uporabo v hladilnih sistemih, toplotnih črpalkah in sekundarnih hladilnih in grelnih sistemih. Ti hladilni sistemi in toplotne črpalke so navedeni v tem standardu kot hladilni sistemi, kot je določeno v EN 378-1.
1.2 Ta evropski standard velja za cevovode vključno s privarjenimi ali pritrjenimi priključki do prirobnic za šobe in vključno z njimi, za privite, privarjene ali pritrjene konektorje ali na rob privarjene ali pritrjene priključke pri prvem obodnem spoju, ki povezuje cevi na druge elemente.
1.3 Ta evropski standard velja za izbor, uporabo in inštalacijo varnostnih dodatkov za zaščito cevovoda med različnimi fazami hladilnega cikla.
1.4 Ta evropski standard velja za naslednje cevovode:
Izmenjevalnike toplote, sestavljene iz cevovodov, za namen hlajenja ali segrevanja zraka, kjer so vidiki cevovodov prevladujoči;
cevovodi, vgrajeni v sklop (npr. samostojni sistem, enota za kondenzacijo);
na terenu postavljeni cevovodi.
1.5 Ta evropski standard velja za cevovode z notranjim negativnim tlakom do –1 bar, ob upoštevanju praznjenje cevovoda pred polnjenjem s hladilom.
1.6 Ta evropski standard velja za mehanske nakladalne razmere in toplotne razmere, kot je določeno v EN 13480-3, povezane s hladilnimi sistemi. Velja za cevovode, izpostavljene maksimalnim dovoljenim temperaturam, za katere so nominalne načrtovane obremenitve za materiale izpeljane iz EN 14276-1:2006+A1 ali kot je določeno v tem evropskem standardu. Poleg tega cevovodi, načrtovani v skladu s tem standardom, morajo imeti maksimalno načrtovano temperaturo manjšo od 200 °C in maksimalni načrtovani tlak nižji od 64 barov. Zunaj teh omejitev je pomembno, da se EN 13480 uporablja za načrtovanje, gradnjo in pregled cevovodov. V teh okoliščinah je pomembno, da se edinstvena narava hladilne naprave, kot je navedena v uvodu iz EN 14276-1:2006+A1, prav tako upošteva.
1.7 Ta evropski standard velja za cevovode, kjer so deli, ki nosijo glavni tlak, proizvedeni iz raztegljivih kovinskih materialov, kot je določeno v klavzuli 4 in v EN 14276-1:2006+A1.
General Information
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.]DKWHYHDruckgeräte für Kälteanlagen und Wärmepumpen - Teil 2: Rohrleitungen - Allgemeine AnforderungenEquipements sous pression pour systèmes de réfrigération et pompes à chaleur - Partie 2: Tuyauteries - Exigences généralesPressure equipment for refrigerating systems and heat pumps - Part 2: Piping - General requirements27.200Hladilna tehnologijaRefrigerating technology27.080Heat pumps23.020.30MHNOHQNHPressure vessels, gas cylindersICS:Ta slovenski standard je istoveten z:EN 14276-2:2007+A1:2011SIST EN 14276-2:2007+A1:2011en,fr,de01-maj-2011SIST EN 14276-2:2007+A1:2011SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 14276-2:2007+A1
February 2011 ICS 23.020.30; 27.080; 27.200 Supersedes EN 14276-2:2007English Version
Pressure equipment for refrigerating systems and heat pumps - Part 2: Piping - General requirements
Equipements sous pression pour systèmes de réfrigération et pompes à chaleur - Partie 2: Tuyauteries - Exigences générales
Druckgeräte für Kälteanlagen und Wärmepumpen - Teil 2: Rohrleitungen - Allgemeine Anforderungen This European Standard was approved by CEN on 17 February 2007 and includes Amendment 1 approved by CEN on 13 December 2010. 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 CEN-CENELEC Management Centre 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 CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, 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 STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14276-2:2007+A1:2011: ESIST EN 14276-2:2007+A1:2011
DN System . 27Annex ZA (informative)
Relationship between this European Standard and the Essential Requirements of EU Directive 97/23/EC . 28Bibliography . 29 SIST EN 14276-2:2007+A1:2011
1 Scope 1.1 This European Standard specifies the requirements for material, design, manufacturing, testing and documentation for stationary piping intended for use in refrigerating systems, heat pumps and secondary cooling and heating systems. These refrigerating systems and heat pump systems are referenced in this standard as refrigerating systems as defined in EN 378-1. 1.2 This European Standard applies to piping including welded or brazed attachments up to and including the flanges, screwed, welded or brazed connectors or to the edge to be welded or brazed at the first circumferential joint connecting piping or other elements. 1.3 This European Standard applies to the selection, application and installation of safety accessories intended to protect the piping during the various phases of the refrigeration cycle. 1.4 This European Standard applies to the following piping: heat exchanger consisting of piping for the purpose of cooling or heating air where piping aspects are predominant; piping incorporated into an assembly (e.g. self contained system, condensing unit); field erected piping. 1.5 This European Standard applies to piping with an internal pressure down to – 1 bar, to account for the evacuation of the piping prior to charging with refrigerant. 1.6 This European Standard applies to both the mechanical loading conditions and thermal conditions as defined in EN 13480-3 associated with refrigerating systems. It applies to piping subject to the maximum allowable temperatures for which nominal design stresses for materials are derived using
!EN 14276-1:2006+A1" or as specified in this European Standard. In addition piping designed to this standard needs to have a maximum design temperature not exceeding 200 °C and a maximum design pressure not exceeding 64 bar. Outside of these limits, EN 13480 should be used for the design construction and inspection of the piping. Under these circumstances the unique nature of a refrigerating plant, as indicated in the introduction of !EN 14276-1:2006+A1", needs also to be taken into account. 1.7 This European Standard applies to piping where the main pressure bearing parts are manufactured from metallic ductile materials as defined in Clause 4 and in !EN 14276-1:2006+A1". SIST EN 14276-2:2007+A1:2011
EN 1289:1998, Non-destructive examination of welds — Penetrant testing of welds — Acceptance levels
EN 1435:1997, Non-destructive examination of welds — Radiographic examination of welded joints EN 1653:1997, Copper and copper alloys — Plate, sheet and circles for boilers, pressure vessels and hot water storage units EN 1712:1997, Non-destructive examination of welds — Ultrasonic examination of welded joints — Acceptance levels EN 1714:1997, Non-destructive examination of welds — Ultrasonic examination of welded joints EN 10204:2004, Metallic products — Types of inspection documents EN 10246-9:2000, Non-destructive testing of steel tubes — Part 9: Automatic ultrasonic testing of the weld seam of submerged arc welded steel tubes for the detection of longitudinal and/or transverse imperfections EN 10246-16:2000, Non-destructive testing of steel tubes — Part 16: Automatic ultrasonic testing of the area adjacent to the weld seam of welded steel tubes for the detection of laminar imperfections
(ISO 2553:1992) !EN ISO 4063:2009, Welding and allied processes
Nomenclature of processes and reference numbers
(ISO 4063:2009)" EN ISO 10042:2005, Welding — Arc-welded joints in aluminium and its alloys — Quality levels for imperfections (ISO 10042:2005) !EN ISO 23277:2009, Non-destructive testing of welds — Penetrant testing of welds — Acceptance levels
(ISO 23277:2006)" ISO 817:2005, Refrigerants — Designation system 3 Terms, definitions, symbols, quantities and units !For the purposes of this document, the terms, definitions, symbols, quantities and units given in
EN 378-1:2008+A1:2010, EN 764-1:2004, EN 764-2:2002, EN 764-3:2002, EN 764-4:2002, EN 764-5:2002,
EN 14276-1:2006+A1:2011 and the following apply." 3.1 Terms and definitions 3.1.1 coil heat exchanger consisting of pipe or tubing (more particularly made from one or more bent pipes) used to cool or heat air
NOTE see Figure 1 SIST EN 14276-2:2007+A1:2011
a) Coil with straight tubes and elbows b) Coil with elbow and headers Figure 1 — Coil 3.2 Symbols, quantities and units Symbols, quantities and units used in this standard are listed in Table 1. Table 1 — Symbols, quantities and units Symbol Quantity Unit DNa Nominal diameter — De External diameter of tube mm f Nominal design stress at design temperature
MPa Pc Calculation pressure (in formula, Pc can be replaced by P) MPa or bar b Pd Design pressure MPa or bar b PS Maximum allowable pressure
MPa or bar b Ptest Test pressure MPa or bar b R Radius of curvature for tube mm tc Calculation temperature
°C td Design temperature
°C z Joint coefficient for welds — a See
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