EN ISO 14903:2017
(Main)Refrigerating systems and heat pumps - Qualification of tightness of components and joints (ISO 14903:2017)
Refrigerating systems and heat pumps - Qualification of tightness of components and joints (ISO 14903:2017)
ISO 14903:2017 provides the qualification procedure for type approval of the tightness of hermetically sealed and closed components, joints and parts used in refrigerating systems and heat pumps as described in relevant parts of ISO 5149. The sealed and closed components, joints and parts concerned are, in particular, fittings, bursting discs, flanged or fitted assemblies. The tightness of flexible piping made from non-metallic materials is dealt with in ISO 13971. Metal flexible piping are covered by this document.
The requirements contained in this document are applicable to joints of maximum DN 50 and components of internal volume of maximum 5 l and maximum weight of 50 kg.
ISO 14903:2017 is intended to characterize their tightness stresses met during their operations, following the fitting procedure specified by the manufacturer, and to specify the minimal list of necessary information to be provided by the supplier of a component to the person in charge of carrying out this procedure.
It specifies the level of tightness of the component, as a whole, and its assembly as specified by its manufacturer.
It applies to the hermetically sealed and closed components, joints and parts used in the refrigerating installations, including those with seals, whatever their material and their design are.
ISO 14903:2017 specifies additional requirements for mechanical joints that can be recognized as hermetically sealed joints.
Kälteanlagen und Wärmepumpen - Qualifizierung der Dichtheit der Bauteile und Verbindungen (ISO 14903:2017)
Systèmes de réfrigération et pompes à chaleur - Qualification de l'étanchéité des composants et des joints (ISO 14903:2017)
ISO 14903:2017 fournit les procédures de qualification pour essai de type de l'étanchéité des composants, joints et éléments hermétiquement scellés et fermés, utilisés dans les systèmes de réfrigération et les pompes à chaleur comme décrits dans les parties pertinentes de l'ISO 5149. Les composants, joints et éléments scellés ou fermés sont notamment les raccords, les disques de rupture ou d'éclatement, les assemblages à brides ou à raccords. L'étanchéité des flexibles en matériaux non métalliques est traitée dans l'ISO 13971. Les flexibles métalliques sont couverts par le présent document.
Les exigences du présent document s'appliquent aux joints de DN 50 maximum et aux composants de 5 l maximum et d'un poids maximal de 50 kg.
ISO 14903:2017 est destiné à caractériser leur étanchéité, les contraintes rencontrées pendant leur fonctionnement, en suivant la procédure de montage spécifiée par le fabricant et à spécifier la liste minimale des informations nécessaires à fournir par le fournisseur d'un composant à la personne chargée de mettre en ?uvre cette procédure.
Il spécifie le niveau d'étanchéité du composant, dans son ensemble, ainsi que son assemblage comme spécifié par son fabricant.
Il est applicable aux composants, joints et éléments hermétiquement scellés et fermés utilisés dans les installations frigorifiques, y compris ceux avec joints d'étanchéité, indépendamment de leur matière et de leur conception.
ISO 14903:2017 spécifie des exigences supplémentaires concernant les joints mécaniques susceptibles d'être considérés comme des joints hermétiquement scellés.
Hladilni sistemi in toplotne črpalke - Ocena tesnosti sestavnih delov in spojev (ISO 14903:2017)
Namen tega evropskega standarda je opisati postopek kvalifikacije za homologacijo tesnosti hermetično zatesnjenih in zaprtih sestavnih delov, spojev in delov, ki se uporabljajo v hladilnih sistemih in toplotnih črpalkah, kot je opisano v standardu EN 378. Zatesnjeni in zaprti sestavni deli, spojniki in zadevni deli so zlasti fitingi, razpočne plošče, prirobnice ali vgrajeni sklopi. Neprepustnost gibkih cevi iz nekovinskih materialov je obravnavana v standardu EN 1736. Ta metoda zajema kovinske gibljive cevi.
Zahteve, ki jih vsebuje ta dokument, se uporabljajo za spoje velikosti največ DN 50 in sestavne dele notranje prostornine največ 5 l in največjo težo 50 kg.
Namen tega dokumenta je opredeliti tesnilne napetosti spojev, ki so bile izpolnjene med njihovim delovanjem, po postopku namestitve, ki ga je določil proizvajalec, in določiti minimalni seznam potrebnih informacij, ki jih dobavitelj sestavnega dela zagotovi osebi, ki je odgovorna za izvajanje tega postopka.
Določa stopnjo tesnosti sestavnega dela kot celote in njegove montaže, kot jo je določil njegov proizvajalec.
Uporablja se za hermetično zatesnjene in zaprte sestavne dele, spoje in dele, ki se uporabljajo v hladilnih napravah, vključno z vsemi tesnili, ne glede na njihov material in njihovo obliko.
Ta evropski standard določa dodatne zahteve za mehanske spoje, ki jih je mogoče prepoznati kot hermetično zatesnjene spoje.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-2017
1DGRPHãþD
SIST EN 16084:2011
+ODGLOQLVLVWHPLLQWRSORWQHþUSDONH2FHQDWHVQRVWLVHVWDYQLKGHORYLQVSRMHY ,62
Refrigerating systems and heat pumps - Qualification of tightness of components and
joints (ISO 14903:2017)
Kälteanlagen und Wärmepumpen - Qualifizierung der Dichtheit der Bauteile und
Verbindungen (ISO 14903:2017)
Systèmes de réfrigération et pompes à chaleur - Qualification de l'étanchéité des
composants et des joints (ISO 14903:2017)
Ta slovenski standard je istoveten z: EN ISO 14903:2017
ICS:
27.080 7RSORWQHþUSDONH Heat pumps
27.200 Hladilna tehnologija Refrigerating technology
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 14903
EUROPEAN STANDARD
NORME EUROPÉENNE
August 2017
EUROPÄISCHE NORM
ICS 27.080; 27.200 Supersedes EN 16084:2011
English Version
Refrigerating systems and heat pumps - Qualification of
tightness of components and joints (ISO 14903:2017)
Systèmes de réfrigération et pompes à chaleur - Kälteanlagen und Wärmepumpen - Qualifizierung der
Qualification de l'étanchéité des composants et des Dichtheit der Bauteile und Verbindungen (ISO
joints (ISO 14903:2017) 14903:2017)
This European Standard was approved by CEN on 10 June 2017.
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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 14903:2017 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 14903:2017) has been prepared by Technical Committee ISO/TC 86
“Refrigeration and air-conditioning” in collaboration with Technical Committee CEN/TC 182
“Refrigerating systems, safety and environmental requirements” 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 February 2018 and conflicting national standards shall
be withdrawn at the latest by February 2018.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 16084:2011.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 14903:2017 has been approved by CEN as EN ISO 14903:2017 without any modification.
INTERNATIONAL ISO
STANDARD 14903
Second edition
2017-07
Refrigerating systems and heat
pumps — Qualification of tightness of
components and joints
Systèmes de réfrigération et pompes à chaleur — Qualification de
l’étanchéité des composants et des joints
Reference number
ISO 14903:2017(E)
©
ISO 2017
ISO 14903:2017(E)
© ISO 2017, Published in Switzerland
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ISO 14903:2017(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Symbols . 3
5 Test requirements . 3
6 Requirements for hermetically sealed systems . 8
7 Test procedures . 8
7.1 General . 8
7.2 Sampling . 8
7.3 Test temperature . 8
7.4 Tightness test . 8
7.4.1 General. 8
7.4.2 Tightness level control . . 9
7.5 Requirements for joints .11
7.5.1 Test samples.11
7.5.2 Torque .11
7.5.3 Reusable joint .12
7.5.4 Requirements for hermetically sealed joints .12
7.6 Pressure-temperature vibration tests (PTV) .12
7.6.1 General.12
7.6.2 Samples .12
7.6.3 Test method .12
7.6.4 Method 1: Combined pressure-temperature cycle test with integrated
vibration test .13
7.6.5 Method 2: Combined pressure-temperature cycle test with a separate
vibration test .15
7.7 Operation simulation .20
7.8 Freezing test .20
7.9 Additional pressure test for hermetically-sealed joints .21
7.10 Vacuum test .21
7.11 Compatibility screening test .22
7.11.1 General.22
7.11.2 Test fluids .22
7.11.3 Test specimens.22
7.11.4 Test setup parameters .22
7.11.5 Test procedure .23
7.11.6 Pass/fail criteria for sealing elements .23
7.12 Fatigue test for hermetically sealed joints .24
8 Test report .25
9 Information to the user .25
Annex A (informative) Equivalent tightness control levels .26
Annex B (normative) Test arrangements .32
Bibliography .34
ISO 14903:2017(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that
...
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