BS EN IEC 60480:2019 – TC:2020 Edition
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Tracked Changes. Specifications for the re-use of sulphur hexafluoride (SF6) and its mixtures in electrical equipment
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 125 |
IEC 60480:2019 provides criteria for the re-use of sulphur hexafluoride (SF 6) and its mixtures after recovery and reclaiming from electrical equipment (e.g. for maintenance, at the end-of-life). Sulphur hexafluoride (SF 6), nitrogen (N 2) and carbon tetrafluoride (CF 4), are gases commonly used for electrical equipment. Taking into account environmental concerns, particular attention is paid to re-use criteria for SF 6 and its mixtures with N 2 and CF 4 for its use in electrical equipment. Procedures for recovering and reclaiming used SF 6 and its mixtures are outside the scope of this document and are described in IEC 62271-4. This document provides several annexes on the description of the different methods of analysis, on by-products, on the procedure for evaluating the potential health effects from by-products, on cryogenic reclaiming of SF 6, and on reclaiming recommendations. Storage, transportation and disposal of SF 6 and its mixtures are outside the scope of this document and are covered by IEC 62271-4. Procedures to determine SF6 leakages are described in IEC 60068-2-17. For the purposes of this document, the complementary gases used in SF 6 mixtures will be limited to N 2 or CF 4. This third edition cancels and replaces the second edition, published in 2004. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: • specifications for the re-use of SF 6 have been confirmed; • specifications for the re-use of SF 6 mixtures, namely SF 6/N 2 and SF 6/CF 4 mixtures are included; • as a result of a new repartition of annexes in IEC 60376, IEC 60480 and IEC 62271-4, this new edition now contains the following five annexes: – Annex A: Description of methods of analysis (on-site and laboratory); – Annex B: By–products of SF 6 and its mixtures; – Annex C: Procedure for evaluating the potential effects on health from by products of SF 6 and its mixtures; – Annex D: Reclaiming recommendations. – Annex E: Cryogenic reclaiming of SF 6;
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | compares BS EN IEC 60480:2019 |
| 2 | TRACKED CHANGES Text example 1 — indicates added text (in green) |
| 73 | undefined |
| 76 | Annex ZA(normative)Normative references to international publicationswith their corresponding European publications |
| 78 | English CONTENTS |
| 81 | FOREWORD |
| 83 | 1 Scope 2 Normative references |
| 84 | 3 Terms and definitions |
| 85 | 4 Contaminants and their sources 4.1 General 4.2 Contaminants from handling and use 4.3 SF6 by-products in equipment that only have an insulating function Tables Table 1 – SF6 contaminants |
| 86 | 4.4 SF6 by-products in switching equipment 4.5 SF6 by-products from internal arcs 4.6 SF6 mixtures specific by-products 5 Specifications for re-use of SF6 Table 2 – Specifications for re-use of SF6 |
| 87 | 6 Specifications for re-use of SF6 mixtures 7 Reclaiming of SF6 and SF6 mixtures 7.1 Feasibility and process Table 3 – Specifications for re-use of SF6/N2 mixtures Table 4 – Specifications for re-use of SF6/CF4 mixtures |
| 88 | Table 5 – General contaminants and methods for their removal Table 6 – Typical adsorbents for various SF6 contaminants |
| 89 | Figures Figure 1 – Decision flow chart for recovered SF6 |
| 90 | 7.2 Detection techniques for checking the quality of the gases 7.2.1 General 7.2.2 On-site analysis |
| 91 | 7.2.3 Laboratory analysis Table 7 – On-site methods |
| 92 | 8 Handling, storage and transportation (informative) 9 Safety and first aid 9.1 General safety rules 9.1.1 General Table 8 – Laboratory methods |
| 93 | 9.1.2 Protection of personnel Table 9 – Measures when working with SF6 electric power equipment |
| 94 | 9.1.3 Handling of contaminated safety equipment and tools Table 10 – Safety measures when opening or accessing gas compartments |
| 95 | 9.1.4 Pressurized equipment and tools or measuring devices 9.1.5 Personal safety and protective equipment Table 11 – Neutralizing solutions |
| 96 | 9.1.6 Facilities and services 9.2 Additional safety measures in case of abnormal release of SF6 due to external fire or internal arc fault |
| 97 | 9.3 First aid equipment and treatment 9.3.1 General 9.3.2 Irritation of the skin Table 12 – Additional safety measures |
| 98 | 9.3.3 Irritation of the eyes 9.3.4 Breathing difficulty 10 Environmental aspects |
| 99 | Annexes Annex A (informative) Description of methods of analysis (on-site and laboratory) A.1 Sampling A.1.1 General A.1.2 On-site sampling connection A.1.3 Sample cylinder for laboratory analysis |
| 100 | A.1.4 Sampling methods for laboratory analysis Figure A.1 – One-sampling cylinder method set-up Figure A.2 – Two-sampling cylinder method set-up |
| 101 | A.2 On-site analysis A.2.1 General A.2.2 SF6 concentration meter A.2.3 Hygrometers |
| 102 | A.3 Laboratory analysis A.3.1 Gas chromatography |
| 103 | Figure A.3 – Example of a gas chromatogram in one print out showing the different possible by-products after decomposition |
| 104 | A.3.2 Infrared spectroscopy Figure A.4 – Typical GCMS chromatogram of decomposed SF6/CF4 mixture |
| 105 | Table A.1 – Peak absorption of SF6 and contaminants |
| 106 | Figure A.5 – IR spectrum of contaminated SF6 |
| 107 | Annex B (informative) By-products of SF6 and its mixtures B.1 Decomposition of SF6 and its mixtures B.1.1 General B.1.2 Behaviour of SF6 in an electric arc |
| 109 | B.1.3 SF6 decomposition with low current discharges B.1.4 Catalytic decomposition of SF6 (high-temperature behaviour) B.2 Corrosion behaviour of SF6 and its by-products B.3 Measures for the removal of by-products |
| 110 | B.4 Physiological characteristics of by-products |
| 111 | Annex C (informative) Procedures for evaluating the potential effects on health from by-products of SF6 and its mixtures C.1 General C.2 Formation and health effects of SF6 by-products C.2.1 Formation of SF6 by-products |
| 112 | C.2.2 Effects of SF6 by-products on health |
| 113 | C.2.3 Quantitative estimation of gaseous byproducts Table C.1 – OELs for SO2, HF, and S2F10 Table C.2 – SOF2 production rate |
| 114 | C.2.4 Procedures for health risk evaluation |
| 115 | Figure C.1 – Procedure for the evaluation of the potential effectson health due to arcing |
| 116 | C.3 Conclusion Figure C.2 – Procedure for the evaluation of the potential effects on health dueto low energy discharges |
| 118 | Annex D (informative) Reclaiming recommendations D.1 General D.2 Filtering recommendations D.3 Transport of used SF6 in gas cylinders and containers by road |
| 119 | Annex E (informative) Cryogenic reclaiming of SF6 E.1 General E.2 Applications E.3 Physical background Figure D.1 – Saturated vapour pressure of various gases as a function of temperature |
| 120 | E.4 Cryogenic processes E.5 Description of a cryogenic reclaimer |
| 121 | Figure D.2 – Typical cryogenic reclaimer for SF6 recovery on site Figure D.3 – Typical cryogenic reclaimer for removing contaminants |
| 123 | Bibliography |
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BS EN IEC 60480:2019
Specifications for the re-use of sulphur hexafluoride (SF6) and its mixtures in electrical equipment Published…
