BRITISH STANDARD BS EN 12094 13 2001 Incorporating Corrigendum No 1 Fixed firefighting systems — Components for gas extinguishing systems — Part 13 Requirements and test methods for check valves and n[.]
Trang 1Incorporating Corrigendum No 1
Fixed firefighting
systems — Components
for gas extinguishing
systems —
Part 13: Requirements and test methods
for check valves and non-return valves
The European Standard EN 12094-13:2001 has the status of a
British Standard
ICS 13.220.10
Trang 2This British Standard, having
been prepared under the
direction of the Health and
Environment Sector
Committee, was published
under the authority of the
Standards Committee and
comes into effect on
15 May 2001
© BSI 19 September 2002
ISBN 0 580 36774 6
National foreword
This British Standard is the official English language version of
EN 12094-13:2001, including Corrigendum February 2002
This European Standard is the subject of transitional arrangements agreed under a Commission mandate which is intended to lead to CE marking in support of the Construction Products Directive In order to allow for any changes in national regulations, the Member States have agreed a transition period of 21 months before CE marking becomes effective
The UK participation in its preparation was entrusted by Technical Committee FSH/18, Fixed firefighting systems, to Subcommittee FSH/18/6, Gas systems, which has the responsibility to:
A list of organizations represented on this subcommittee can be obtained on request to its secretary
Cross-references
The British Standards which implement international or European
publications referred to in this document may be found in the BSI Catalogue
under the section entitled “International Standards Correspondence Index”, or
by using the “Search” facility of the BSI Electronic Catalogue or of
British Standards Online
This publication does not purport to include all the necessary provisions of a contract Users are responsible for their correct application
Compliance with a British Standard does not of itself confer immunity from legal obligations.
interpretation, or proposals for change, and keep the UK interests informed;
promulgate them in the UK
Summary of pages
This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 17 and a back cover
The BSI copyright date displayed in this document indicates when the document was last issued
Amendments issued since publication
13873
Corrigendum No 1 19 September 2002 Revisions to 3.8 and the first paragraph
of 4.1.
Trang 3NORME EUROPÉENNE
English version
Fixed firefighting systems — Components for gas extinguishing systems — Part 13: Requirements and test methods for check
valves and non-return valves
Installations fixes de lutte contre liincendie — Eléments
d’installation d’extinction à gaz — Partie 13: Exigences et
méthodes d’essai pour clapets anti-retour
Ortsfeste Brandbekämpfungsanlagen — Bauteile für Löschanlagen mit gasförmigen Löschmitteln — Teil 13: Anforderungen und Prüfverfahren für Rückflussverhinderer
und Rückschlagventile
This European Standard was approved by CEN on 4 February 2001.
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 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 Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
C O M I T É E U R O P É E N D E N O R M A L I S A T I O N
E U R O P Ä I S C H E S K O M I T E E FÜ R N O R M U N G
Management Centre: rue de Stassart, 36 B-1050 Brussels
Trang 4Page
Foreword 3
Introduction 3
1 Scope 4
2 Normative references 4
3 Terms and definitions 4
4 Requirements 5
4.1 General design 5
4.2 Connection threads 6
4.3 Internal pressure 6
4.4 Strength 6
4.5 Flow way 6
4.6 Leakage 6
4.7 Impact 6
4.8 Function and ambient temperatures 6
4.9 Corrosion 6
4.10 Stress corrosion 6
4.11 Vibration resistance 7
4.12 Documentation 7
5 Test methods 7
5.1 Test conditions 7
5.2 Test samples and order of tests 7
5.3 Compliance 8
5.4 Internal pressure 8
5.5 Strength test 8
5.6 Leakage test 8
5.7 Impact test 9
5.8 Function 9
5.9 Function at high and low temperature 9
5.10 Corrosion 10
5.11 Stress corrosion 10
5.12 Vibration 10
6 Marking 10
7 Evaluation of conformity 11
7.1 General 11
7.2 Initial type testing 11
7.3 Factory production control (FPC) 11
Annex A (normative) Flow characteristics 12
Annex ZA (informative) Clauses of this European Standard addressing the provisions of the EU Construction Products Directive 14
Bibliography 17
Trang 5This European Standard has been prepared by Technical Committee CEN/TC 191 "Fixed firefighting systems", the secretariat of which is held by BSI
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 September 2001, and conflicting national standards shall be withdrawn at the latest by December 2002
This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s)
For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this standard
This part of EN 12094 is one of a number of European Standards prepared by CEN/TC 191 covering components for gas extinguishing systems
They are included in a series of European Standards planned to cover:
- gas extinguishing systems (EN 12094)
- sprinkler systems (EN 12259 and EN 12845)
- powder systems (EN 12416)
- explosion protection systems (EN 26184)
- foam systems (EN 13565)
- hose systems (EN 671)
- smoke and heat control systems (EN 12101)
- water spray systems The following parts of this European Standard are planned:
- Part 1: Requirements and test methods for electrical automatic control and delay devices
- Part 2: Requirements and test methods for non-electrical automatic control and delay devices
- Part 3: Requirements and test methods for manual triggering and stop devices
- Part 4: Requirements and test methods for high- pressure container valve assemblies and actuators
- Part 5: Requirements and test methods for selector valves and actuators for CO2 systems
- Part 6: Requirements and test methods for non-electrical disable devices for CO2 systems
- Part 7: Requirements and test methods for nozzles for CO2 systems
- Part 8: Requirements and test methods for flexible connectors for CO2 systems
- Part 9: Requirements and test methods for special fire detectors
- Part 10: Requirements and test methods for pressure gauges and pressure switches
- Part 11: Requirements and test methods for weighing devices
- Part 12: Requirements and test methods for alarm devices
- Part 13: Requirements and test methods for check valves and non-return valves
- Part 16: Requirements and test methods for odorizing devices for low pressure CO2 systems
- Part 17: Requirements and test methods for pipe hangers
- Part 20: Requirements and test methods for compatibility of components According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom
Introduction
It has been assumed in the preparation of this European Standard that the execution of its provisions is entrusted to appropriately qualified and experienced people
All pressure data in this European Standard are given as gauge pressures in bar, unless otherwise stated
Trang 61 Scope
This European Standard specifies the requirements and describes test methods for check and non-return valves for
CO2, inert gas or halocarbon gas fire extinguishing systems
Non-return and check valves allow the passage in the direction of flow and they prevent flow in the reverse direction
This European Standard is applicable to check valves installed between container valve and manifold and non-return
valves installed in pilot lines, except those valves which are tested in combination with non-electrical control devices
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications These
normative references are cited at the appropriate places in the text and the publications are listed hereafter For dated
references subsequent amendments to or revisions of any of these publications apply to this European Standard only
when incorporated in it by amendment or revision For undated references the latest edition of the publication referred
to applies (including amendments)
EN 12094-8, Fixed firefighting systems - Components for gas extinguishing systems - Requirements and test
methods for flexible connectors for CO 2 systems
ISO 7-1, Pipe threads where pressure-tight joints are made on the threads - Part 1: Dimensions, tolerances and
designation
ISO 228-1, Pipe threads where pressure-tight joints are not made on the threads - Part 1: Dimensions, tolerances
and designation
3 Terms and definitions
For the purposes of this European Standard the terms and definitions of EN 12094-8 and the following terms and
definitions apply:
3.1
check valve
component intended for installation between container valve and manifold, which permits flow only in one direction
3.2
CO 2 -high-pressure installation
fire extinguishing installation in which the CO2 is stored at ambient temperature, e.g the pressure of the CO2 in storage
is p abs = 58,6 bar at 21oC
3.3
CO 2 -low-pressure installation
3.4
fill ratio
mass of extinguishing medium related to the net capacity of a container expressed as kilograms per litre (kg/l)
3.5
gas extinguishing installation
system installed to provide fire protection
3.6
halocarbon gas
extinguishing agent that contains as primary components one or more organic compounds containing one or more of
the elements fluorine, chlorine, bromine or iodine
3.7
halocarbon gas installation
fire extinguishing installation in which the halocarbon gas is stored at ambient temperature
Trang 7inert gas
non-liquefied gas or mixture of gases which extinguish the fire mainly by reducing the oxygen concentration in the protected zone, e.g argon, nitrogen or CO2 or mixtures of these gases
3.9
inert gas installation
fire extinguishing installation in which the inert gas is stored at ambient temperature
3.10
manifold
special pipe to collect the medium flow of two or more containers
3.11
non-return valve
component intended for installation in pilot lines, which permits flow only in one direction
3.12
resistance coefficient
value for the calculation of the pressure drop in a component under two-phase flow condition
3.13
two-phase flow
partitial change of phase of a fluid from liquid to vapour under flowing conditions
3.14
working pressure
pressure at which the component is used in the system
4 Requirements
4.1 General design
The metal parts of check valves and non-return valves shall be made of corrosion resistant materials, e.g stainless steel, copper, copper alloy or corrosion-protected steel (e.g galvanized steel, cadmium-plated steel, etc.)
All materials shall be resistant to media with which they come into contact
Non-return and check valves shall be designed so that the function cannot be adversely affected by ageing or environmental influences
Non-metallic materials and elastomers shall be stable and shall not alter their performance over the working life time recommended by the manufacturer
Non-return and check valves shall be specified by the manufacturer for working pressure according to Table 1
Trang 8Table 1 - Working pressure
component
component
component
ratio/superpressurization, where applicable
The manufacturer shall specify the free cross-sectional area of the minimum flow way of check valves and
non-return valves
4.2 Connection threads
Connection threads shall conform to ISO 7-1 or ISO 228-1 relating to threads
4.3 Internal pressure
Non-return and check valves shall not show any sign of deterioration which could impair proper function, when
pressurized up to 1,5 times the working pressure listed in Table 1 and tested in accordance with 5.4
4.4 Strength
Non-return and check valves shall not show any sign of deterioration which could impair proper function, when
pressurized up to three times the working pressure listed in Table 1 and tested in accordance with 5.5
4.5 Flow way
The free cross-sectional area of the minimum flow way of check valves and non-return valves shall be within ± 10%
of the value specified by the manufacturer, when verified by the measurement check described in 5.3
NOTE See also annex A
4.6 Leakage
Non-return and check valves shall be sufficiently tight for the purpose they are constructed for, when tested in
accordance with 5.6
4.7 Impact
Check valves shall not be damaged, when tested in accordance with 5.7
4.8 Function and ambient temperatures
Check valves shall have reached their fully open position at a differential pressure of 3 bar maximum
Non-return valves shall have reached their fully open position at a differential pressure of not greater than 10 % of the
minimum system pressure in the pilot system
tested in accordance with 5.8 and 5.9
4.9 Corrosion
The test sample shall operate satisfactorily when tested in accordance with 5.8, after being subjected to the corrosion
test in accordance with 5.10
4.10 Stress corrosion
Any copper alloy part used in the component shall not crack, when tested in accordance with 5.11
Trang 94.11 Vibration resistance
The component shall not be damaged, when tested in accordance with 5.12
4.12 Documentation
4.12.1 The manufacturer shall prepare and maintain documentation which specifies the installation, operation,
routine testing and maintenance of the component and all other aspects relating to its incorporation within a fire extinguishing system
4.12.2 The manufacturer shall prepare installation and user documentation, which shall be submitted to the testing
authority together with the test sample(s) This documentation shall comprise at least the following:
a) a general description of the component, including a list of its features and functions;
b) a technical specification including:
1) the information mentioned in 4.1;
2) sufficient information to permit an assessment of the compatibility with other components of the system (if applicable e.g mechanical, electrical or software compatibility);
c) installation instructions including:
1) the suitability for use in various environments;
2) mounting instructions;
d) operating instructions;
e) maintenance instructions
4.12.3 The manufacturer shall prepare design documentation, which shall be submitted to the testing authority
together with the test sample(s) This documentation shall include drawings, part lists, block diagrams (if applicable), circuit diagrams (if applicable) and a functional description to such an extent that compliance with this European Standard may be checked and that a general assessment of the design is made possible
5 Test methods
5.1 Test conditions
The components shall be tested assembled as recommended for installation by the manufacturer The tests shall
The tolerance for all test parameters is 5 %, unless otherwise stated
5.2 Test samples and order of tests
Four samples shall be used for the tests The order of tests shall be in accordance with Table 2
Trang 10Table 2 - Order of tests
sample A/B sample C sample D
5.3 Compliance
5.3.1 This test relates to the requirements specified in 4.1 and 4.5.
5.3.2 A visual and measurement check shall be made to determine whether the test samples correspond to the
description in the technical literature (drawings, parts lists, description of functions, operating and installation
instructions), and whether the samples comply with the general and marking requirements of this European
Standard
5.4 Internal pressure
5.4.1 This test relates to the requirements specified in 4.3.
5.4.2 The non-return or check valve shall be connected via the outlet to a suitable hydraulic pressure supply.
Provision for venting shall be available
The system of air shall be vented and the pressure shall be increased to 1,5 times the working pressure and shall be
maintained for 5 min
The systems shall be depressurized and the function test shall be carried out in accordance with 5.8.3 or 5.8.4
respectively
5.5 Strength test
5.5.1 This test relates to the requirements specified in 4.4.
5.5.2 The inlet of the test sample shall be connected to a suitable hydraulic pressure supply and the outlet shall be
blocked The system shall be vented and the pressure shall be increased to three times the working pressure
This pressure shall be maintained for a period of 10 min At the end of this period the hydraulic pressure shall be
released
5.6 Leakage test
5.6.1 This test relates to the requirements specified in 4.6.
5.6.2 The test unit shall consist of a pipe with the same diameter as the nominal diameter of the valve and a length of