BS EN 16678-2015 Safety and control devices for gas burners and gas burning appliances Automatic shut-off valves for operating pressure of above 500 kPa up to and including 6 300 k.pdf

1、BSI Standards PublicationBS EN 16678:2015Safety and control devices for gas burners and gas burning appliances Automatic shut-off valves for operating pressure of above 500 kPa up to and including 6 300 kPaBS EN 16678:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementati

2、on of EN 16678:2015. The UK participation in its preparation was entrusted to TechnicalCommittee GSE/22, Safety and control devices for gas and oil burners and gas burning appliances.A list of organizations represented on this committee can be obtained on request to its secretary.This publication do

3、es not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2015. Published by BSI Standards Limited 2015ISBN 978 0 580 83525 4 ICS 23.060.40 Compliance with a British Standard cannot confer immunity from

4、legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 November 2015.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS EN 16678:2015EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 16678 November 2

5、015 ICS 23.060.40 English Version Safety and control devices for gas burners and gas burning appliances - Automatic shut-off valves for operating pressure of above 500 kPa up to and including 6 300 kPaquipements auxiliaires pour brleurs gaz et appareils gaz - Robinets automatiques de sectionnement p

6、our pression de service suprieure 500 kPa et infrieure ou gale 6 300 kPa Sicherheits- und Regeleinrichtungen fr Gasbrenner und Gasbrennstoffgerte - Automatische Absperrventile fr einen Betriebsdruck ber 500 kPa bis einschlielich 6 300 kPa This European Standard was approved by CEN on 19 September 20

7、15. 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

8、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-CEN

9、ELEC 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, Ita

10、ly, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Aven

11、ue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 16678:2015 EBS EN 16678:2015EN 16678:2015 (E) 2 Contents Page European foreword . 6 1 Scope 7 2 Normative references 7 3 Terms and definitions . 8 4

12、 Classification . 9 4.1 Classes of control . 9 4.2 Groups of control 10 4.3 Classes of control functions 10 5 Units of measurement and test conditions . 10 6 Construction requirements 10 6.1 General . 10 6.2 Mechanical parts of the control 10 6.2.1 Appearance . 10 6.2.2 Holes . 10 6.2.3 Breather hol

13、es . 10 6.2.4 Test for leakage of breather holes . 10 6.2.5 Screwed fastenings 10 6.2.6 Jointing . 11 6.2.7 Moving parts 11 6.2.8 Sealing caps 11 6.2.9 Dismantling and reassembly . 11 6.2.101 Closed position indicator switch 11 6.2.102 Valve with modulating control 11 6.2.103 Other controls assemble

14、d to a valve . 11 6.2.104 Balanced valves 11 6.2.105 Additional requirements for shut-off function . 11 6.3 Materials 12 6.3.1 General material requirements 12 6.3.2 Housing 12 6.3.3 Test for leakage of housing after removal of non-metallic parts 12 6.3.4 Zinc alloys . 12 6.3.5 Springs providing clo

15、sing and/or sealing force 12 6.3.6 Resistance to corrosion and surface protection . 12 6.3.7 Impregnation . 12 6.3.8 Seals for glands for moving parts . 12 6.3.101 Closure members . 12 6.3.102 Parts transmitting the closing force 12 6.3.103 Balanced valves 12 6.3.104 Bellows 12 6.3.105 Resistance to

16、 pressure . 13 6.4 Gas connections 13 6.4.1 Making connections. 13 6.4.2 Connection sizes . 14 6.4.3 Threads 14 6.4.4 Union joints 14 BS EN 16678:2015EN 16678:2015 (E) 3 6.4.5 Flanges 14 6.4.6 Compression fittings 14 6.4.7 Nipples for pressure test 14 6.4.8 Strainers . 14 6.4.101 Welded connections

17、14 6.5 Electrical parts of the control . 14 6.5.1 General . 14 6.5.2 Switching elements 14 6.5.3 Electrical components . 14 6.6 Protection against internal faults for the purpose of functional safety 15 6.6.1 Design and construction requirements 15 6.6.2 Class A . 15 6.6.3 Class B . 15 6.6.4 Class C

18、 . 15 6.6.5 Circuit and construction evaluation 15 6.101 Pneumatic and hydraulic actuating mechanisms . 15 7 Performance . 15 7.1 General . 15 7.2 Leak-tightness 15 7.3 Test for leak-tightness 15 7.4 Torsion and bending . 16 7.5 Torsion and bending tests . 16 7.6 Rated flow rate 16 7.7 Test for rate

19、d flow rate . 16 7.8 Durability. 16 7.8.1 Elastomers in contact with gas 16 7.8.2 Marking 17 7.8.3 Tests for marking . 18 7.8.4 Resistance to scratching . 18 7.8.5 Scratch test 18 7.8.6 Resistance to humidity . 18 7.8.7 Humidity test 18 7.9 Performance test for electronic controls . 18 7.10 Long-ter

20、m performance for electronic controls . 18 7.101 Closing function concerning remanence 18 7.101.1 Requirement 18 7.101.2 Test of closing function 18 7.102 Closing force . 19 7.102.1 Requirement 19 7.102.2 Test of closing force . 19 7.103 Delay time and opening time 19 7.103.1 Requirement 19 7.103.2

21、Test of delay time and opening time . 19 7.104 Closing time 19 7.104.1 Requirement 19 7.104.2 Test of closing time 19 7.105 Sealing force . 20 7.105.1 Requirement 20 7.105.2 Test of sealing force . 20 7.106 Closed position indicator switch . 20 7.106.1 Requirement 20 7.106.2 Test of closed position

22、indicator switch 21 BS EN 16678:2015EN 16678:2015 (E) 4 7.107 Endurance . 21 7.107.1 Requirement 21 7.107.2 Endurance test 21 8 EMC/Electrical requirements 22 8.1 Protection against environmental influences . 22 8.2 Supply voltage variations below 85 % of rated voltage . 22 8.3 Short term voltage in

23、terruptions and decreases 22 8.4 Supply frequency variations 22 8.5 Surge immunity test 22 8.6 Electrical fast transient/burst . 22 8.7 Immunity to conducted disturbances . 22 8.8 Immunity to radiated fields 22 8.9 Electrostatic discharge immunity test 22 8.10 Power frequency magnetic field immunity

24、 test 22 8.11 Electrical requirements . 23 8.11.101 General 23 8.11.102 Electrical equipment 23 9 Marking, installation and operating instructions 24 9.1 Marking 24 9.2 Installation and operating instructions . 24 9.3 Warning notice 25 Annex A (informative) Gas connections in common use in the vario

25、us countries 26 Annex B (informative) Leak-tightness test volumetric method 27 Annex C (informative) Leak-tightness test pressure loss method . 28 Annex D (normative) Conversion of pressure loss into leakage rate . 29 Annex E (normative) Electrical/electronic component fault modes 30 Annex F (normat

26、ive) Additional requirements for safety accessories and pressure accessories as defined in EU Directive 97/23/EC . 31 Annex G (informative) Materials for pressurized parts 32 Annex H (informative) Additional materials for pressurized parts . 33 Annex I (normative) Requirements for controls used in D

27、C supplied gas burners and gas burning appliances 34 Annex J (normative) Method for the determination of a Safety Integrity Level (SIL) 35 Annex K (normative) Method for the determination of a Performance Level (PL). 36 Annex L (informative) Relationship between Safety Integrity Level (SIL) and Perf

28、ormance Level (PL) 37 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 2009/142/EC relating to appliances burning gaseous fuels . 38 Annex ZB (informative) Relationship between this European Standard and the Essential Requirements of E

29、U Directive 97/23/EC relating to pressure equipment . 41 Bibliography . 43 Tables BS EN 16678:2015EN 16678:2015 (E) 5 Table 1 Minimum value of safety factor F 13 Table 2 Test method and acceptance criteria referred to the properties of elastomeric materials 17 Table 3 Sealing force requirements 20 T

30、able 4 Operating cycles . 22 Table ZA.1 Correspondence between this European Standard and Directive 2009/142/EC relating to appliances burning gaseous fuels . 38 Table ZB.1 Correspondence between this European Standard and Directive 97/23/EC relating to pressure equipment . 41 Figures Figure 1 Typic

31、al pilot and release valve application 9 BS EN 16678:2015EN 16678:2015 (E) 6 European foreword This document (EN 16678:2015) has been prepared by Technical Committee CEN/TC 58 “Safety and control devices for burners and appliances burning gaseous or liquid fuels”, the secretariat of which is held by

32、 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 May 2016, and conflicting national standards shall be withdrawn at the latest by May 2016. Attention is drawn to the possibility that some of

33、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 has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supp

34、orts essential requirements of EU Directives 2009/142/EC and 97/23/EC. For relationship with EU Directives, see informative Annexes ZA and ZB, which are an integral part of this document. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countri

35、es 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, Polan

36、d, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 16678:2015EN 16678:2015 (E) 7 1 Scope This European Standard specifies the safety, design, construction and performance requirements and testing for automatic shut-off valves with or without mo

37、dulating control functions (hereafter referred to as valves) for burners and appliances burning one or more gaseous fuels according to EN 437:2003+A1:2009. This European Standard is applicable to valves with declared maximum inlet pressures of more than 500 kPa (5 bar) and up to and including 6 300

38、kPa (63 bar). This European Standard is applicable to electrically operated valves and to valves actuated by fluids including the pilot valves for these fluids if actuated electrically and including release valves, but not to any external electrical devices for switching the actuating energy; automa

39、tic shut-off valves where the flow rate is controlled by external electrical signals proportional to the applied signal. This European Standard is not applicable to valves specifically designed for use in transmission and distribution networks. NOTE Provisions for final product inspection and testin

40、g by the manufacturer are not specified. 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

41、 referenced document (including any amendments) applies. EN 161:2011+A3:2013, Automatic shut-off valves for gas burners and gas appliances EN 549:1994, Rubber materials for seals and diaphragms for gas appliances and gas equipment EN 682:2002, Elastomeric Seals Materials requirements for seals used

42、in pipes and fittings carrying gas and hydrocarbon fluids EN 1092-1:2007+A1:2013, Flanges and their joints Circular flanges for pipes, valves, fittings and accessories, PN designated Part 1: Steel flanges EN 1092-2:1997, Flanges and their joints Circular flanges for pipes, valves, fittings and acces

43、sories, PN designated Part 2: Cast iron flanges EN 1092-3:2003, Flanges and their joints Circular flanges for pipes, valves, fittings and accessories, PN designated Part 3: Copper alloy flanges EN 1092-4:2002, Flanges and their joints Circular flanges for pipes, valves, fittings and accessories, PN

44、designated Part 4: Aluminium alloy flanges EN 1759-1:2004, Flanges and their joint Circular flanges for pipes, valves, fittings and accessories, Class designated Part 1: Steel flanges, NPS 1/2 to 24 EN 1759-3:2003, Flanges and their joints Circular flanges for pipes, valves, fittings and accessories

45、, Class designated Part 3: Copper alloy flanges BS EN 16678:2015EN 16678:2015 (E) 8 EN 1759-4:2003, Flanges and their joint Circular flanges for pipes, valves, fittings and accessories, class designated Part 4: Aluminium alloy flanges EN 10226-1:2004, Pipe threads where pressure tight joints are mad

46、e on the threads Part 1: Taper external threads and parallel internal threads Dimensions, tolerances and designation EN 10226-2:2005, Pipe threads where pressure tight joints are made on the threads Part 2: Taper external threads and taper internal threads Dimensions, tolerances and designation EN 1

47、2516-1:2014, Industrial valves Shell design strength Part 1: Tabulation method for steel valve shells EN 12516-2:2014, Industrial valves Shell design strength Part 2: Calculation method for steel valve shells EN 12516-3:2002, Valves Shell design strength Part 3: Experimental method EN 12516-4:2014,

48、Industrial valves Shell design strength Part 4: Calculation method for valve shells manufactured in metallic materials other than steel EN 12627:1999, Industrial valves Butt welding ends for steel valves EN 12760:1999, Valves Socket welding ends for steel valves EN 13611:2007+A2:2011, Safety and con

49、trol devices for gas burners and gas burning appliances General requirements EN 60529:1991, Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989) EN 60730-1:2011, Automatic electrical controls for household and similar use Part 1: General requirements (IEC 60730-1:2010) EN 61058-1:2002, Switches for appliances Part 1: General requirements (IEC 61058-1:2000) EN 175301-803:2006, Detail Specification: Rectangular connectors Flat contacts, 0,8 mm thickness, loc