BS EN 60480:2004

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
   3.1 General terms
   3.2 Material aspects
   3.3 Environmental aspects
4 Typical applications of SF[6]
5 Impurities and their sources
   5.1 Introductory remark
   5.2 Impurities from handling and in service
   5.3 Impurities in equipment having only an insulating
        function
   5.4 Impurities in switching equipment
   5.5 Impurities from internal arcs
6 Environmental aspects
   6.1 Introductory remark
   6.2 Impact on the ecosystem
   6.3 Ozone depletion
   6.4 Greenhouse effect
   6.5 Decomposition products
   6.6 Conclusion
7 Health and safety
   7.1 Introductory remark
   7.2 Precautions necessary with SF[6]
   7.3 Necessary precautions with used SF[6]
   7.4 Health considerations
8 Quality specification for re-use of SF[6] in new or
   existing switchgear
   8.1 Decision flowchart for SF[6] removed from electrical
        equipment for treatment
   8.2 Maximum acceptable impurity levels for re-use of SF[6]
9 Analytical methods for SF[6] and their significance
   9.1 General
   9.2 On-site analysis
   9.3 Laboratory analysis
10 Handling, storage and transportation
   10.1 Introductory remark
   10.2 Gas handling equipment
   10.3 General safety requirements
   10.4 Condition of the SF[6] in an enclosure
   10.5 Removing used SF[6] from an enclosure
   10.6 Storage and transportation of used SF[6]
Annex A (informative) Derivation of maximum tolerable moisture
                       for re-use
Annex B (informative) Description of the different methods of
                       analysis (on-site and laboratory)
Annex C (informative) Reclaiming recommendations and
                       procedures on-site
Annex ZA (normative) Normative references to international
                       publications with their corresponding
                       European publications
Bibliography
Figures
Tables

Specifies the re-use of sulfur hexafluoride (SF[6]) after removal from electrical equipment (for maintenance, or at the end of life).

Concerns the re-use of sulfur hexafluoride (SF ₆) after removal from electrical equipment (for maintenance, or at the end of life). This standard recommends procedures for reclaiming used SF ₆ and for restoring its quality to an acceptable level, which would allow the filling of new or existing electrical equipment. This standard provides guidance to operational and maintenance personnel for the testing and safe handling of used SF ₆ . The main changes with respect to the previous edition are listed below:
- updating of standard as it relates to environmental issues, storage and analytical methods;
- addition of specification for the re-use of gas;
- inclusion of a regeneration process for sulfur hexafluoride taken from electrical equipment.