prEN 15834
(Main)Refrigerating systems and heat pumps - Qualification of tightness of components and joints
Refrigerating systems and heat pumps - Qualification of tightness of components and joints
This document is intended to describe the qualification procedure of the tightness of static components used in the refrigerating industry and fixed air conditioning. The static components concerned are, in particular, the fittings the bursting discs, the flanged or fitted assemblies. This document is intended to characterise their tightness, stresses met during their operations, following the fitting procedure specified by the manufacturer, and to specify the minimal list of operation to be provided by the supplier of a component to the person in charge of carrying out this procedure. It specifies the maximal leakage of the component. It applies to the static components used in the refrigerating installations, including those with seals, whatever their material and design are.
Kälteanlagen und Wärmepumpen - Qualifizierung der Dichtheit der Bauteile und Verbindungen
Das vorliegende Dokument soll als Beschreibung des Verfahrens zur Qualifizierung der Dichtheit von hermetisch dichten und geschlossenen Bauteilen, Verbindungen und Teilen dienen, die in der Kühlindustrie und bei fest eingebauten Klimaanlagen Anwendung finden. Bei den behandelten dichten und geschlossenen Bauteilen, Verbindungen und Teilen handelt es sich insbesondere um Fittings, Berstscheiben sowie geflanschte oder mit Verbindungsstücken hergestellte Baugruppen. Die Dichtheit von flexiblen Rohrleitungen aus nichtmetallischen Werkstoffen wird in der prEN 1736 behandelt. Flexible Rohrleitungen aus Metall werden von der vorliegenden Norm abgedeckt.
Dieses Dokument ist dafür vorgesehen, deren Dichtheit und die im Betrieb bei Befolgung des durch den Hersteller festgelegten Verfahrens des Zusammenbaus auftretenden Beanspruchungen zu charakterisieren sowie die Liste der Informationen festzulegen, die der für die Durchführung dieses Verfahrens verantwort¬lichen Person durch den Lieferanten eines Bauteils mindestens bereitzustellen sind.
Das vorliegende Dokument legt den Grad der Dichtheit des Bauteils als Ganzes sowie dessen durch den Hersteller festgelegten Zusammenbau fest.
Es ist auf die in kältetechnischen Einrichtungen angewendeten hermetisch dichten und geschlossenen Bauteile, Verbindungen und Teile anwendbar, einschließlich der mit Dichtungen versehenen, unabhängig von deren Werkstoff und Auslegung.
Das vorliegende Dokument legt zusätzliche Anforderungen an mechanische Verbindungen fest, die als hermetisch dichte Verbindungen anerkannt werden können.
Systèmes de réfrigération et pompes à chaleur - Qualification de l'étanchéité des composants et des joints
Le présent document a pour objet de décrire la procédure de qualification de l’étanchéité des composants, joints et éléments hermétiquement scellés et fermés, utilisés dans les industries du froid et de la climatisation fixe. Les composants, joints et éléments scellés et fermés concernés sont, notamment, les raccords, les disques de rupture ou d’éclatement, les assemblages à bride ou à raccord. L’étanchéité des flexibles en matériaux non métalliques est traitée dans le prEN 1736. Les flexibles métalliques sont couverts par la présente norme.
Le présent document 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 donner par le fournisseur d’un composant à la personne chargée de mettre en œuvre cette procédure.
Il spécifie le niveau d’étanchéité du composant, dans son ensemble, ainsi que son assemblage spécifié par son fabricant.
Il est applicable aux composants, joints et éléments scellés et fermés utilisés dans les installations frigorifiques, y compris ceux avec joints d’étanchéité, indépendamment de leur matière et de leur conception.
Le présent document 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
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-2008
+ODGLOQLVLVWHPLLQWRSORWQHþUSDONH2FHQDWHVQRVWLVHVWDYQLKGHORYLQVSRMHY
Refrigerating systems and heat pumps - Qualification of tightness of components and
joints
Kälteanlagen und Wärmepumpen - Qualifizierung der Dichtheit der Bauteile und
Verbindungen
Ta slovenski standard je istoveten z: prEN 15834
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.
EUROPEAN STANDARD
DRAFT
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2008
ICS 27.080; 27.200
English Version
Refrigerating systems and heat pumps - Qualification of
tightness of components and joints
Kälteanlagen und Wärmepumpen - Qualifizierung der
Dichtheit der Bauteile und Verbindungen
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 182.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN 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 Management Centre has the
same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2008 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 15834:2008: E
worldwide for CEN national Members.
Contents Page
Foreword.3
1 Scope .4
2 Normative references .4
3 Terms and definitions .4
4 Symbols .5
5 Test requirements.6
6 Requirements for hermetically sealed systems .11
7 Test procedures.11
7.1 General.11
7.2 Sampling.11
7.3 Test temperature.11
7.4 Tightness test.12
7.4.1 Tightness control level.13
7.5 Requirements for joints .15
7.5.1 General conditions .15
7.6 Pressure temperature vibration tests (PTV) .16
7.6.1 General.16
7.6.2 Samples .16
7.6.3 Test method.16
7.6.4 Method 1: combined pressure temperature cycle test with integrated vibration test.17
7.6.5 Method 2: combined pressure temperature cycle test with a separate vibration test. .19
7.7 Operation simulation.25
7.8 Freezing test.26
7.9 Additional pressure test for hermetically sealed joints.27
7.10 Vacuum Test.27
7.11 Compatibility Screening Test .27
7.11.1 General.27
7.11.2 Test fluids.28
7.11.3 Test specimens.28
7.11.4 Test setup parameters .28
7.11.5 Tests procedure.28
7.11.6 Pass/fail criteria for sealing elements .29
7.12 Fatigue test for hermetically sealed joints.31
8 Test report .31
9 Information to the user.31
Annex A (informative) Component-joint test arrangements .32
Annex B (normative) Equivalent tightness control levels.34
B.1 Calculation models.34
B.2 From volumetric flow to mass flow.35
B.3 Tightness control level stated as bubbles of air in unit time:.37
Bibliography .40
Foreword
This document (prEN 15834:2008) has been prepared by Technical Committee CEN/TC 182 “Refrigerating systems,
safety and environmental requirements”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
1 Scope
This document is intended to describe the qualification procedure of the tightness of hermetically sealed and closed
components, joints and parts used in the refrigerating industry and fixed air conditioning. The sealed and closed
components, joints and parts concerned are, in particular, the fittings, the bursting discs, the flanged or fitted
assemblies. The tightness of flexible piping made from non metallic materials is dealt with in prEN 1736. Metal
flexible piping are covered by this standard.
This document is intended to characterise 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.
This document specifies additional requirements for mechanical joints that can be recognised as hermetically sealed
joints.
2 Normative references
The following references documents are indispensable for the application of this document. For dated references,
only the edition cited applies. For undated references, the latest edition of the referenced document (including any
amendments) applies
EN 378-1, Refrigerating systems and heat pumps — Safety and environmental requirements — Part 1: Basic
requirements, definitions, classification and selection criteria.
EN 1330-8, Non destructive testing — Terminology — Part 8: Terms used in leak tightness testing.
prEN 1736, Refrigerating systems and heat pumps — Flexible pipe elements, vibration isolators, expansion joints
and non-metallic tubes — Requirements, design and installation.
EN 1779, Non-destructive testing — Leak testing — Criteria for method and technique selection.
EN 12263, Refrigerating systems and heat pumps — Safety switching devices for limiting the pressure —
Requirements and test.
EN 13185, Non6destrcutive testing — Leak testing — Tracer gas method.
IEC 60068-2-6, Environmental testing — Part 2: Tests — Tests Fc: Vibration (sinusoidal).
IEC 60068-2-64, Environmental testing — Part 2 Test methods — Test Fh: Vibration, broad-band random (digital
control) and guidance.
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 1330-8 and EN 378-1 and the following
apply.
3.1
maximal flow rate, Q
max
value of the maximal leak flow rate at any point of the component, expressed in grams per year, at PS
3.2
hermetically sealed system
system in which all refrigerant containing parts are made tight by welding, brazing or a similar permanent connection
which may include capped valves and capped service ports that allow proper repair or disposal and which have a
tested tightness control level of less than 3 grams per year under a pressure of at least a quarter of the maximum
allowable pressure
NOTE Sealed systems as defined in prEN 378-1(2007) equal hermetically sealed systems.
3.3
product family
group of products that have the same function, same technology, and same material for each functional part and
sealing materials
3.4
reusable joint
joint made without replacing the sealing material in general procedure
NOTE In some cases the tube is used as sealing material (e.g. flare joint).
4 Symbols
Dk percentage deviation of the minimum and maximum torque from the average of the minimum and
rel
maximum torque, (K – K )/(K + K )
o,max o,min o,min o,max
f (Hz) frequency of vibrations
K average torques of the respective joint standard
o,ave
K required maximum torques of the respective joint standard, if specified. Otherwise, the maximum
o,max
torque values supplied by the manufacturer.
K required minimum torques of the respective joint standard, if specified. Otherwise, the minimum
o,min
torque values supplied by the manufacturer.
L (mm) length of tube.
n number of cycles in temperature and in pressure
n total number of cycles in temperature and in pressure
total
N number of samples
P (bar) tightness test pressure
P (bar) maximal pressure of cycle
max
P (bar) minimal pressure of cycle
min
PS (bar) maximal working pressure
P (bar) nominal set pressure of the device
set
Q (g/yr) maximal flow rate
max
s (mm) vibration displacement (peak to peak value)
T (°C) maximal temperature of cycle
max
T (°C) minimal temperature of cycle
min
5 Test requirements
The required tests to be applied to components and joints used in refrigerating systems and heat pumps are given in
Table 2 and in Table 3.
The following Figures show the principle of a component and a joint and their corresponding requirements in Table 2
or Table 3.
According to Table 2
According to Table 2
According to Table 3
Key
1 joint
2 component
3 pipe
4 component-joint
5 extension pipe
Figure 1 — Principle: component-joint
All component types and joints types shall be tested.
When a
...
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