BS EN 50156-2:2015
$102.76
Electrical equipment for furnaces and ancillary equipment – Requirements for design, development and type approval of safety devices and subsystems
| Published By | Publication Date | Number of Pages |
| BSI | 2015 | 20 |
This part of EN 50156 applies to the requirements for design, development and approval of safety-relevant equipment for the safety related system for furnaces that are operated with solid, liquid or gaseous fuels and their ancillary equipment.
This part of EN 50156 specifies the requirements for safety-related equipment that is necessary to meet the safety conditions of furnaces, to reduce the hazards of combustion and to protect the heated systems from damage e.g. by overheating. Subsystems and devices of other technologies, which are part of the safety-related system (see EN 50156‑1:2015, 3.38), are covered by this part of EN 50156 .
This part of EN 50156 sets out special requirements for design, development and approval of safety devices and subsystems to satisfy the requirements of EN 50156‑1:2015, Clause 10 “ Additional requirements for the application of a safety-related system”.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 5 | European foreword |
| 6 | Introduction |
| 7 | 1 Scope 2 Normative references |
| 8 | 3 Terms and definitions 4 Requirements for safety devices and subsystems of safety-related systems 4.1 General |
| 9 | 4.2 Requirements for safety devices and subsystems in electrical/electronic/ programmable electronic systems 4.2.1 General 4.2.2 Type approval in accordance with product standards 4.2.3 Type approval following the requirements of EN 61508 4.2.3.1 General 4.2.3.2 Safety requirement and functional specification: A specification describing the desired function of the device has to be provided. This specification shall describe the required safety function of the device as well the operational behaviour. 4.2.3.3 Safety management: A safety management system shall be present for all lifecycle phases during development e.g. safety plan, Verification&Validation plan. 4.2.3.4 Preventing and managing systematic faults (systematic capability): The measures for preventing and managing systematic faults shall correspond to the required SIL according to EN 61508, in particular Parts 2 and 3. 4.2.3.5 Architecture: The architectural requirements shall be satisfied in accordance with route 1H according to EN 61508-2:2010. |
| 10 | 4.2.3.6 Safety parameters: The parameters HFT, SFF, PFD/PFH and proof test interval in accordance to EN 61508 shall be determined. For an example of documentation for the data, see Annex C. 4.2.3.7 Environment / Electrical safety: Evidence shall be provided at least of the requirements of one of the following European Standards: 4.2.3.8 EMC: The requirements shall be according to part 1 of this standard in 4.2.2. 4.2.3.9 Operating and maintenance instructions: The operating instructions as the safety manual describe all the framework condition for application, installation, operation and maintenance. Moreover, all the safety parameters that are necessary to de… 4.2.3.10 Documentation: The result of the approval shall document the achievable safety integrity level and the safety manual of the equipment shall describe all conditions and restrictions for the use of the safety-relevant equipment. Satisfaction of… 4.2.3.11 Quality assurance 4.3 Requirements for safety devices and subsystems of other technologies 4.3.1 General 4.3.2 Type approval by product standards 4.3.3 Type approval by fault assessment 4.3.3.1 General |
| 11 | 4.3.3.2 Safety requirement and functional specification: See 4.2.3.2. 4.3.3.3 Environment / Electrical safety: See 4.2.3.7. 4.3.3.4 EMC: See 4.2.3.8. 4.3.3.5 Operating and maintenance instructions: The operating instructions as the safety manual in accordance to EN 61508-4:2010 describe all the framework condition for application, installation, operation and maintenance. 4.3.3.6 Documentation: The result of the approval shall document the satisfaction of the requirements and shall describe all conditions and restrictions for the use of the safety-relevant equipment. 4.3.4 Quality assurance 4.3.5 Quantification 4.3.6 Recurring functional testing |
| 12 | 4.3.7 Operating instructions |
| 13 | Annex A (normative) Proven in use for subsystems and devices of other technologies |
| 15 | Annex B (informative) Aspects with influence on functional safety |
| 16 | Annex C (informative) Summary of the characteristic data for use of a subsystem or device in safety-related systems C.1 Classification of the product C.2 Characteristic data according to EN 61508, Parts 1 to 7: C.2.1 Data for use of the product as a subsystem or device in safety functions C.2.2 Additional data for use of the product as a component in safety functions |
| 18 | Bibliography |
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