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
levels 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
Bibliography
Figures
Tables