BS EN 1643:2014
$189.07
Safety and control devices for gas burners and gas burning appliances. Valve proving systems for automatic shut-off valves
| Published By | Publication Date | Number of Pages |
| BSI | 2014 | 46 |
This European Standard specifies safety, constructional and performance requirements of valve-proving systems, hereafter referred to as VPS, intended for use with gas burners and gas-burning appliances. It also describes the test procedures for checking compliance with these requirements and provides information necessary for the purchaser and user.
This European Standard applies to all types of VPS which are used for the automatic detection of leakage in a gas burner section having at least two valves designed in accordance with EN 161 and which give a signal if the leakage of one of the valves exceeds the detection limit.
This European Standard applies to VPSs with a maximum working pressure up to and including 500 kPa for use in systems using fuel gases of the 1st, 2nd or 3rd families.
This European Standard does not apply to VPSs for use in explosive atmospheres.
This European Standard is applicable to AC and DC supplied VPS (for VPS supplied by stand-alone battery system, battery systems for mobile applications or systems which are intended to be connected to DC supply networks VPS see Annex I).
Provisions for production control are not part of this European Standard.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 4 | Contents Page |
| 8 | 1 Scope 2 Normative references 3 Terms and definitions |
| 10 | 4 Classification 4.1 Classes of control 4.2 Groups of control 4.3 Classes of control functions 5 Units of measurement and test conditions 5.1 Dimensions 5.2 Pressures 5.3 Bending moments and torques 5.4 Test conditions and measurement tolerances |
| 11 | 6 Construction requirements 6.1 General 6.2 Mechanical parts of the control 6.3 Materials 6.4 Gas connections 6.5 Electronic parts of the control 6.5.1 General |
| 12 | 6.5.2 Protection provided by the enclosure 6.5.3 Electrical components 6.6 Protection against internal faults for the purpose of functional safety 6.6.1 Design and construction requirements 6.6.1.1 Fault avoidance and fault tolerance 6.6.1.2 Reset device |
| 13 | 6.6.1.3 Documentation 6.6.2 Class A 6.6.3 Class B 6.6.4 Class C 6.6.4.1 Design and construction requirements |
| 14 | 6.6.4.2 First fault 6.6.4.3 Second fault 6.6.4.4 Faults during lock-out or safety- shut-down |
| 15 | 6.6.5 Circuit and construction evaluation 6.6.5.1 Test conditions 6.6.5.2 Test criteria 6.6.5.3 Assessment 6.101 Additional constructional requirements for VPS systems 6.101.1 Signal for indication 6.101.2 VPS setting 7 Performance 7.1 General 7.2 Leak-tightness |
| 16 | 7.3 Test for leak-tightness 7.3.1 General |
| 17 | 7.3.2 External leak-tightness 7.3.3 Internal leak-tightness 7.4 Torsion and bending 7.5 Torsion and bending tests 7.6 Rated flow rate 7.7 Test for rated flow rate 7.8 Durability 7.9 Performance tests for electronic controls 7.10 Long-term performance for electronic controls 7.10.1 General 7.10.2 Stress test 7.10.2.1 Thermal stress test 7.10.2.2 Vibration test |
| 18 | 7.10.3 Long term performance test 7.101 Functional requirements 7.101.1 General 7.101.2 Programme sequence 7.101.3 Timing |
| 19 | 7.101.4 Testing of the programme sequence and timing 7.101.5 Detection limit 7.101.5.1 General 7.101.5.2 Test of the detection limit 7.101.6 Self-checking |
| 20 | 7.101.7 Lock-out and reset device 7.101.7.1 General 7.101.7.2 Lock-out function 8 EMC/Electrical requirements 8.1 Protection against environmental influences |
| 21 | 8.2 Supply voltage variations below 85 % of rated voltage 8.3 Short-term voltage interruptions and decreases 8.4 Supply frequency variations 8.4.1 General |
| 22 | 8.4.2 Variations up to 2 % 8.4.3 Variations between 2 % and 5 % 8.5 Surge immunity test 8.6 Electrical fast transient/burst |
| 23 | 8.7 Immunity to conducted disturbances 8.8 Immunity to radiated fields 8.9 Electrostatic discharge immunity test 8.10 Power frequency magnetic field immunity test |
| 24 | 8.11 Electrical requirements 9 Marking, installation and operating instructions 9.1 Marking 9.2 Installation and operating instructions |
| 25 | 9.3 Warning notice |
| 26 | Annex A (informative)Gas connections in common use in the various countries |
| 27 | Annex B (informative)Leak-tightness test − volumetric method |
| 28 | Annex C (informative)Leak-tightness test − pressure loss method |
| 29 | Annex D (normative)Conversion of pressure loss into leakage rate |
| 30 | Annex E (normative)Electrical/electronic component fault modes |
| 32 | Annex F (normative)Additional requirements for safety accessories and pressure accessories as defined in EU Directive 97/23/EC |
| 33 | Annex G (normative)Materials for pressurized parts |
| 34 | Annex H (informative)Additional materials for pressurized parts |
| 35 | Annex I (normative)Requirements for controls used in DC supplied gas burners and gas burning appliances I.1 Scope I.2 Thermal stress test I.3 Long term performance test I.4 At ambient temperature I.5 Supply voltage variations below 85 % of rated voltage I.6 Short-term voltage interruptions and decreases I.7 Supply frequency, surge immunity, electrical fast transient/burst, electromagnetic conducted disturbances, power frequency magnetic field immunity test |
| 36 | I.8 Electrical transient conduction immunity for type B only |
| 37 | Annex J (normative)Method for the determination of a Safety Integrity Level (SIL) |
| 38 | Annex K (normative)Method for the determination of a Performance Level (PL) |
| 39 | Annex L (informative)Relationship between Safety Integrity Level (SIL) and Performance Level (PL) |
| 40 | Annex AA (informative)Application Guidance AA.1 General AA.2 Use of a valve proving system |
| 41 | Annex ZA (informative)Relationship between this European Standard and the Essential Requirements of EU Directive 2009/142/EC relating to appliances burning gaseous fuels |
