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IEC 60480
Edition 3.0 2019-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Specifications for the re-use of sulphur hexafluoride (SF6) and its mixtures
in electrical equipment
Spécifications pour la réutilisation de l’hexafluorure de soufre (SF6)
et des mélanges contenant du SF6 dans le matériel électrique
your local IEC member National Committee for further information.
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IEC 60480
Edition 3.0 2019-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Specifications for the re-use of sulphur hexafluoride (SF ) and its mixtures
in electrical equipment
Spécifications pour la réutilisation de l’hexafluorure de soufre (SF )
et des mélanges contenant du SF dans le matériel électrique
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.040.20; 29.130.01 ISBN 978-2-8322-6697-7
– 2 – IEC 60480:2019 © IEC 2019
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 Contaminants and their sources . 9
4.1 General . 9
4.2 Contaminants from handling and use . 9
4.3 SF by-products in equipment that only have an insulating function . 9
4.4 SF by-products in switching equipment . 10
4.5 SF by-products from internal arcs . 10
4.6 SF mixtures specific by-products . 10
5 Specifications for re-use of SF . 10
6 Specifications for re-use of SF mixtures . 11
7 Reclaiming of SF and SF mixtures . 11
6 6
7.1 Feasibility and process . 11
7.2 Detection techniques for checking the quality of the gases. 14
7.2.1 General . 14
7.2.2 On-site analysis . 14
7.2.3 Laboratory analysis . 15
8 Handling, storage and transportation (informative) . 16
9 Safety and first aid . 16
9.1 General safety rules . 16
9.1.1 General . 16
9.1.2 Protection of personnel . 17
9.1.3 Handling of contaminated safety equipment and tools . 18
9.1.4 Pressurized equipment and tools or measuring devices . 19
9.1.5 Personal safety and protective equipment . 19
9.1.6 Facilities and services . 20
9.2 Additional safety measures in case of abnormal release of SF due to
external fire or internal arc fault . 20
9.3 First aid equipment and treatment . 21
9.3.1 General . 21
9.3.2 Irritation of the skin . 21
9.3.3 Irritation of the eyes . 22
9.3.4 Breathing difficulty . 22
10 Environmental aspects . 22
Annex A (informative) Description of methods of analysis (on-site and laboratory) . 23
A.1 Sampling. 23
A.1.1 General . 23
A.1.2 On-site sampling connection . 23
A.1.3 Sample cylinder for laboratory analysis . 23
A.1.4 Sampling methods for laboratory analysis . 24
A.2 On-site analysis . 25
A.2.1 General . 25
A.2.2 SF concentration meter . 25
A.2.3 Hygrometers . 25
A.3 Laboratory analysis . 26
A.3.1 Gas chromatography . 26
A.3.2 Infrared spectroscopy . 28
Annex B (informative) By-products of SF6 and its mixtures . 31
B.1 Decomposition of SF and its mixtures . 31
B.1.1 General . 31
B.1.2 Behaviour of SF in an electric arc . 31
B.1.3 SF6 decomposition with low current discharges . 33
B.1.4 Catalytic decomposition of SF (high-temperature behaviour) . 33
B.2 Corrosion behaviour of SF and its by-products . 33
B.3 Measures for the removal of by-products . 33
B.4 Physiological characteristics of by-products . 34
Annex C (informative) Procedures for evaluating the potential effects on health from
by-products of SF and its mixtures . 35
C.1 General . 35
C.2 Formation and health effects of SF by-products . 35
C.2.1 Formation of SF by-products . 35
C.2.2 Effects of SF by-products on health . 36
C.2.3 Quantitative estimation of gaseous by-products . 37
C.2.4 Procedures for health risk evaluation . 38
C.3 Conclusion . 40
Annex D (informative) Reclaiming recommendations . 42
D.1 General . 42
D.2 Filtering recommendations . 42
D.3 Transport of used SF in gas cylinders and containers by road . 42
Annex E (informative) Cryogenic reclaiming of SF . 43
E.1 General . 43
E.2 Applications .
...