SIST EN ISO 15848-1:2015
(Main)Industrial valves - Measurement, test and qualification procedures for fugitive emissions - Part 1: Classification system and qualification procedures for type testing of valves (ISO 15848-1:2015)
Industrial valves - Measurement, test and qualification procedures for fugitive emissions - Part 1: Classification system and qualification procedures for type testing of valves (ISO 15848-1:2015)
This part of ISO 15848 specifies testing procedures for evaluation of external leakage of valve stem
seals (or shaft) and body joints of isolating valves and control valves intended for application in volatile
air pollutants and hazardous fluids. End connection joints, vacuum application, effects of corrosion, and
radiation are excluded from this part of ISO 15848.
This part of ISO 15848 concerns classification system and qualification procedures for type testing of
valves.
Industriearmaturen - Mess-, Prüf- und Qualifikationsverfahren für flüchtige Emissionen - Teil 1: Klassifizierungssystem und Qualifikationsverfahren für die Bauartprüfung von Armaturen (ISO 15848-1:2015)
Dieser Teil von ISO 15848 legt Prüfverfahren für die Bewertung der äußeren Undichtheit von Schaft- bzw. Wellenabdichtungen von Armaturen, Gehäuseverbindungen von Absperrventilen und Stellgeräten zur Ver¬wendung mit flüchtigen luftverunreinigenden Stoffen und gefährlichen Flüssigkeiten fest. Anschlussver¬bindungen, Anwendungen in der Vakuumtechnik, Auswirkungen von Korrosion und Bestrahlung fallen nicht in den Anwendungsbereich dieses Teils von ISO 15848.
Dieser Teil von ISO 15848 beinhaltet ein Klassifizierungssystem und Qualifikationsverfahren für die Durch¬führung von Bauartprüfungen an Armaturen.
Robinetterie industrielle - Mesurage, essais et modes opératoires de qualification pour émissions fugitives - Partie 1: Système de classification et modes opératoires de qualification pour les essais de type des appareils de robinetterie (ISO 15848-1:2015)
ISO 158484-1:2015 spécifie des modes opératoires d'essai pour l'évaluation des fuites externes des dispositifs d'étanchéité de la tige (ou de l'arbre) de l'appareil de robinetterie, et des jonctions du corps des robinets de sectionnement et des robinets de régulation destinés à être utilisés au contact de polluants atmosphériques volatils et de fluides dangereux. Les jonctions des raccords d'extrémité, les applications sous vide, les effets de la corrosion et des rayonnements sont exclus de la présente partie de l'ISO 15848.
ISO 158484-1:2015 concerne le système de classification et les modes opératoires de qualification pour les essais de type des appareils de robinetterie.
Industrijski ventili - Meritve, preskusi in postopki kvalificiranja pobeglih emisij - 1. del: Klasifikacijski sistem in kvalifikacijski postopki za preskušanje tipa ventilov (ISO 15848-1:2015)
Ta del standarda ISO 15848 določa preskusne postopke za oceno zunanjega tesnjenja tesnilk ventilnih stebel
(ali gredi) ter spojev izolirnih ventilov in krmilnih ventilov, namenjenih uporabi pri hlapnih onesnaževalih v zraku in nevarnih tekočinah. Končni priključni spoji, vakuumska uporaba, učinki korozije in sevanje so izključeni iz tega dela standarda ISO 15848.
Ta del standarda ISO 15848 obravnava klasifikacijske sisteme in kvalifikacijske postopke za preskušanje tipa ventilov.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 15848-1:2015
01-september-2015
1DGRPHãþD
SIST EN ISO 15848-1:2006
Industrijski ventili - Meritve, preskusi in postopki kvalificiranja pobeglih emisij - 1.
del: Klasifikacijski sistem in kvalifikacijski postopki za preskušanje tipa ventilov
(ISO 15848-1:2015)
Industrial valves - Measurement, test and qualification procedures for fugitive emissions -
Part 1: Classification system and qualification procedures for type testing of valves (ISO
15848-1:2015)
Industriearmaturen - Mess-, Prüf- und Qualifikationsverfahren für flüchtige Emissionen -
Teil 1: Klassifizierungssystem und Qualifikationsverfahren für die Bauartprüfung von
Armaturen (ISO 15848-1:2015)
Robinetterie industrielle - Mesurage, essais et modes opératoires de qualification pour
émissions fugitives - Partie 1: Système de classification et modes opératoires de
qualification pour les essais de type des appareils de robinetterie (ISO 15848-1:2015)
Ta slovenski standard je istoveten z: EN ISO 15848-1:2015
ICS:
23.060.01 Ventili na splošno Valves in general
SIST EN ISO 15848-1:2015 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 15848-1:2015
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SIST EN ISO 15848-1:2015
EUROPEAN STANDARD
EN ISO 15848-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2015
ICS 23.060.01 Supersedes EN ISO 15848-1:2006
English Version
Industrial valves - Measurement, test and qualification
procedures for fugitive emissions - Part 1: Classification system
and qualification procedures for type testing of valves (ISO
15848-1:2015)
Robinetterie industrielle - Mesurage, essais et modes Industriearmaturen - Mess-, Prüf- und
opératoires de qualification pour émissions fugitives - Partie Qualifikationsverfahren für flüchtige Emissionen - Teil 1:
1: Système de classification et modes opératoires de Klassifizierungssystem und Qualifikationsverfahren für die
qualification pour les essais de type des appareils de Bauartprüfung von Armaturen (ISO 15848-1:2015)
robinetterie (ISO 15848-1:2015)
This European Standard was approved by CEN on 7 February 2015.
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, 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
© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 15848-1:2015 E
worldwide for CEN national Members.
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SIST EN ISO 15848-1:2015
EN ISO 15848-1:2015 (E)
Contents Page
Foreword .3
2
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SIST EN ISO 15848-1:2015
EN ISO 15848-1:2015 (E)
Foreword
This document (EN ISO 15848-1:2015) has been prepared by Technical Committee ISO/TC 153 “Valves” in
collaboration with Technical Committee CEN/TC 69 “Industrial valves” the secretariat of which is held by
AFNOR.
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 December 2015, and conflicting national standards shall be withdrawn
at the latest by December 2015.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 15848-1:2006.
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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
Endorsement notice
The text of ISO 15848-1:2015 has been approved by CEN as EN ISO 15848-1:2015 without any modification.
3
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SIST EN ISO 15848-1:2015
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SIST EN ISO 15848-1:2015
INTERNATIONAL ISO
STANDARD 15848-1
Second edition
2015-06-01
Industrial valves — Measurement,
test and qualification procedures for
fugitive emissions —
Part 1:
Classification system and qualification
procedures for type testing of valves
Robinetterie industrielle — Mesurage, essais et modes opératoires de
qualification pour émissions fugitives —
Partie 1: Système de classification et modes opératoires de
qualification pour les essais de type des appareils de robinetterie
Reference number
ISO 15848-1:2015(E)
©
ISO 2015
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SIST EN ISO 15848-1:2015
ISO 15848-1:2015(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2015
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
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Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2015 – All rights reserved
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SIST EN ISO 15848-1:2015
ISO 15848-1:2015(E)
Contents Page
Foreword .iv
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and abbreviations . 3
5 Type test . 4
5.1 Test conditions . 4
5.1.1 Preparation of a valve to be tested . 4
5.1.2 Test fluid . 4
5.1.3 Test temperature . 4
5.1.4 Measurement of test valve temperature. 4
5.1.5 Leakage measurement . 7
5.2 Test procedures . 8
5.2.1 Safety rules. 8
5.2.2 Test equipment . 8
5.2.3 Stem (or shaft) seal adjustment (SSA) . 8
5.2.4 Test description . 9
6 Performance classes .11
6.1 Classification criteria .11
6.2 Tightness classes .11
6.2.1 Definition .11
6.2.2 Helium as test fluid .12
6.2.3 Methane as test fluid .12
6.2.4 Correlations .12
6.3 Endurance classes .12
6.3.1 Mechanical-cycle classes for isolating valves .12
6.3.2 Mechanical-cycle classes for control valves.14
6.4 Temperature classes .15
6.5 Examples of class designation .16
6.6 Marking .16
7 Reporting .16
8 Extension of qualification to untested valves .17
Annex A (normative) Total leak rate measurement .19
Annex B (normative) Leak measurement using the sniffing method .32
Annex C (informative) Leak rate conversion (helium) .41
Bibliography .43
© ISO 2015 – All rights reserved iii
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SIST EN ISO 15848-1:2015
ISO 15848-1:2015(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 committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any
patent rights identified during the development of the document will be in the Introduction and/or on
the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers
to Trade (TBT), see the following URL: Foreword — Supplementary information.
The committee responsible for this document is ISO/TC 153, Valves, Subcommittee SC 1, Design,
manufacture, marking and testing.
This second edition cancels and replaces the first edition (ISO 15848-1:2006) which has been technically
revised. The main changes are the following:
−1
— leak rate at the stem seal (Table 1) is expressed in mbar∙l∙s per mm stem diameter;
— flushing method is replaced by accumulation or suck through method to measure leak rate from
stem seal with Helium (Annex A);
— leakage is expressed in ppmv; leakage with methane is measured by sniffing;
−7 −1 −1 −5 −1 −1
— for tightness Class AH, leak rate ≤ 1,78·10 mbar∙l∙s ∙mm (10 mg∙s ∙m );
— the appropriate leak rate is given for Classes BH and CH;
— addition of Table 3 which gives tightness classes for stem (or shaft) seals with methane;
— there is no correlation intended between the tightness classes when the test fluid is helium (Classes
AH, BH, CH) and when the test fluid is methane (Classes AM, BM, CM);
— modification of the number of mechanical cycles for isolating valves;
— addition of Table 4;
— addition of Figures 3, 4, and 5;
— addition of type leak (A.1.3.4, B.1.4.2, B.1.6.1);
— modification of Figure B.2;
— modification of B.1.6.1 on calibration procedures;
— deletion of Figure B.3;
iv © ISO 2015 – All rights reserved
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SIST EN ISO 15848-1:2015
ISO 15848-1:2015(E)
— addition of Table C.1 and modification of Table C.2.
ISO 15848 consists of the following parts, under the general title Industrial valves — Measurement, test
and qualification procedures for fugitive emissions:
— Part 1: Classification system and qualification procedures for type testing of valves
— Part 2: Production acceptance test of valves
© ISO 2015 – All rights reserved v
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SIST EN ISO 15848-1:2015
ISO 15848-1:2015(E)
Introduction
The objective of this part of ISO 15848 is to enable classification of performance of different designs and
constructions of valves to reduce fugitive emissions.
This part of ISO 15848 defines type test for evaluation and qualification of valves where fugitive
emissions standards are specified.
The procedures of this part of ISO 15848 can only be used with the application of necessary precautions
for testing with flammable or inert gas at temperature and under pressure.
vi © ISO 2015 – All rights reserved
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SIST EN ISO 15848-1:2015
INTERNATIONAL STANDARD ISO 15848-1:2015(E)
Industrial valves — Measurement, test and qualification
procedures for fugitive emissions —
Part 1:
Classification system and qualification procedures for type
testing of valves
1 Scope
This part of ISO 15848 specifies testing procedures for evaluation of external leakage of valve stem
seals (or shaft) and body joints of isolating valves and control valves intended for application in volatile
air pollutants and hazardous fluids. End connection joints, vacuum application, effects of corrosion, and
radiation are excluded from this part of ISO 15848.
This part of ISO 15848 concerns classification system and qualification procedures for type testing of
valves.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 5208, Industrial valves — Pressure testing of metallic valves
EN 13185:2001, Non-destructive testing — Leak testing — Tracer gas method
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
body seals
any seal in pressure containing part except stem (or shaft) seals
3.2
Class
convenient round number used to designate pressure-temperature ratings
Note 1 to entry: It is designated by the word “Class” followed by the appropriate reference number from the
following series: Class 125, Class 150, Class 250, Class 300, Class 600, Class 900, Class 1 500, Class 2 500.
3.3
concentration
ratio of test fluid volume to the gas mixture volume measured at the leak source(s) of the test valve
1)
Note 1 to entry: The concentration is expressed in ppmv .
3 3 3
1) Parts per million volume is a unit deprecated by ISO. 1 ppmv = 1 ml/m = 1 cm /m .
© ISO 2015 – All rights reserved 1
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SIST EN ISO 15848-1:2015
ISO 15848-1:2015(E)
3.4
control valve
power operated device which changes the fluid flow rate in a process control system and which consists
of a valve connected to an actuator that is capable of changing the position of a closure member in the
valve in response to a signal from the controlling system
3.5
fugitive emission
chemical or mixture of chemicals, in any physical form, which represents an unanticipated or spurious
leak from equipment on an industrial site
3.6
leakage
loss of the test fluid through the stem (or shaft) seal or body seal(s) of a test valve under the specified
test conditions and which is expressed as a concentration or a leak rate
3.7
leak rate
−1
mass flow rate of the test fluid, expressed in mg·s per millimetre of stem diameter through stem seal
–1
system or volumic flow rate of the test fluid, expressed in mbar∙l∙s per millimetre of stem diameter
through stem seal system
3.8
local leakage
measurement of the test fluid leakage using a probe at the leak source point
3.9
mechanical cycle of control valves
for linear/rotary control valves, test cycles performed at 50 % of stroke/angle with an amplitude of
±10 % of full stroke/angle
3.10
mechanical cycle of isolating valves
motion of a valve obturator moving from fully closed position to fully opened position, and returning to
fully closed position
3.11
nominal size
DN
alphanumeric designation of size for components of a pipework system, which is used for reference
purposes, comprising the letters DN followed by a dimensionless whole number which is indirectly
related to physical size, in millimetres, of the bore or outside diameter of the end connections
Note 1 to entry: The nominal diameter is designated by the letters DN followed by a number from the following
series: 10, 15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 200, 250, 300, 350, 400, etc.
Note 2 to entry: The number following the letters DN does not represent a measurable value and should not be
used for calculation purposes except where specified in the relevant standard.
Note 3 to entry: Adapted from ISO 6708:1995, definition 2.1.
3.12
nominal pressure
PN
numerical designation relating to pressure, which is a convenient rounded number for reference
purposes, comprising the letters PN followed by the appropriate reference number
Note 1 to entry: All equipment of the same nominal size (DN) designated by the same PN number have compatible
mating dimensions.
Note 2 to entry: The maximum allowable working pressure depends upon materials, design, and working
temperatures and is selected from the pressure/temperature rating tables in the appropriate standards.
2 © ISO 2015 – All rights reserved
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SIST EN ISO 15848-1:2015
ISO 15848-1:2015(E)
Note 3 to entry: The nominal pressure is designated by the letters PN followed by the appropriate reference
number from the following series: 2,5, 6, 10, 16, 20, 25, 40, 50, etc.
Note 4 to entry: Adapted from ISO 7268:1983, definition 2.1.
3.13
isolating valve
valve intended for use principally in the closed or open position which can be power actuated or manually
operated
3.14
performance class
level of the performance of a test valve
Note 1 to entry: The performance classes are defined in Clause 6.
3.15
room temperature
temperature in the range of −29 °C to +40 °C
3.16
stem
shaft
valve component extending into the valve shell to transmit the linear/rotary motion from the actuating
device to the valve obturator
3.17
stem seal
shaft seal
component(s) installed around the valve stem (or shaft) to avoid leakage of internal fluids to atmosphere
3.18
test pressure
pressure used for testing the valve which, unless otherwise specified, is the rated pressure specified at
the test temperature and the shell material of a test valve in the relevant standards
3.19
test temperature
fluid temperature selected for the test as measured inside the test valve
Note 1 to entry: The test temperature is given in Table 5.
3.20
thermal cycle
change of the temperature from the room temperature to the specified test temperature and return to
the room temperature
3.21
total leakage
collection of leakage of the test fluid at the leak source using an encapsulation method
3.22
type test
a test conducted to establish the performance class of a valve
4 Symbols and abbreviations
M predicted maximum leakage
alr
SSA stem (or shaft) seal adjustment
© ISO 2015 – All rights reserved 3
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SIST EN ISO 15848-1:2015
ISO 15848-1:2015(E)
OD stem outside diameter
stem
RT room temperature
NOTE The abbreviation SSA corresponds to the abbreviation of “Stem Seal Adjustment”.
5 Type test
5.1 Test conditions
5.1.1 Preparation of a valve to be tested
Only a fully assembled valve shall be used for the test.
A valve shall be selected from standard production at random. The valve shall have been tested and
accepted in accordance with ISO 5208 or any other applicable standard and no subsequent protective
coating shall have been applied.
Additional seal arrangements to allow the stem sealing system leakage measurement is permitted and
shall not affect the sealing performance of the valve.
The test valve interior shall be dried and lubricants (if any) shall be removed. The valve and test
equipment shall be clean and free of water, oil, and dust and the packing may be changed prior to the
test. If the valve packing is changed prior to the test, it should be done under the supervision of the valve
manufacturer.
If a test valve is equipped with a manually adjustable stem (or shaft) seal(s), it shall be initially adjusted
according to the manufacturer’s instructions and recorded in the test report as provided in Clause 7.
The valve manufacturer shall select the appropriate actuating device.
5.1.2 Test fluid
The test fluid shall be helium gas of 97 % minimum purity or methane of 97 % minimum purity. The
same test fluid shall be used throughout the test.
5.1.3 Test temperature
Valve mechanical cycling is carried out at the room temperature or in the steps of the room temperature
and the selected test temperature other than the room temperature (see 5.2.4.1).
The test temperature shall be recorded for each leakage measurement.
5.1.4 Measurement of test valve temperature
The temperature of the test valve shall be measured at three locations, as shown in Figure 1, and
recorded in a test report.
a) Measurement at location 1 shall be used to determine the test temperature.
b) Measurement at location 2 is also made for information. Any use of insulation shall be detailed in
the test report.
c) Measurement at location 3 is used to determine the external valve temperature adjacent to the stem
(or shaft) seal(s) for information.
d) Measurement at location 4 is an option if measurement location 1 is not possible (except in the case
where heating elements penetrate the blind flanges).
4 © ISO 2015 – All rights reserved
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SIST EN ISO 15848-1:2015
ISO 15848-1:2015(E)
All temperatures at location 1, 2, and 3 (and 4) shall be stabilized before leakage is measured (see
Figures 2 and 3). Temperature at location 3 shall be stabilized for minimum 10 min prior to leakage
measurement.
Check if the temperature variation is within ±5 %.
Key
1 location 1: flow path (temperature T )
1
2 location 2: valve body (temperature T )
2
3 location 3: stuffing box (temperature T )
3
4 location 4: optional for flow path (temperature T )
1
Figure 1 — Measurements of temperature
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SIST EN ISO 15848-1:2015
ISO 15848-1:2015(E)
Key
T test temperature, °C
test
T stabilization temperature at location 1 (flow path)
1
T stabilization temperature at location 2 (valve body)
2
T stabilization temperature at location 3 (stuffing box)
3
t time
t stabilization of temperature at location 3 (stuffing box)
0
t + 10 min start of mechanical cycles
0
Figure 2 — Stabilization of temperatures (when the valve is internally heated or cooled)
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SIST EN ISO 15848-1:2015
ISO 15848-1:2015(E)
Key
T test temperature, °C
test
T stabilization temperature at location 1 (flow path)
1
T stabilization temperature at location 2 (valve body)
2
T stabilization temperature at location 3 (stuffing box)
3
t time
t stabilization of temperature at location 3 (stuffing box)
0
t + 10 min start of mechanical cycles
0
Figure 3 — Stabilization of temperatures (when the valve is externally heated or cooled)
5.1.5 Leakage measurement
5.1.5.1 Stem (or shaft) leakage measurement
Leakage shall be measured from a test valve at rest in the partly open position.
The leakage measurement shall be performed
— by the global method (vacuum or bagging) according to the procedures described in Annex A, or
— by the local leakage measurement (sniffing) according to the procedures described in B.2.
5.1.5.2 Body seal leakage measurement
The local leakage shall be measured by sniffing method according to the procedure described in Annex B.
Evaluation of the end connections should be done to ensure that they do not affe
...
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