IEC 62271 Recovery, treatment and destruction of SF6
| Process | Vacuum level in accordance with IEC 62271-4 |
|---|---|
| Evacuation of air or a transport filling | <1 mbar |
| Evacuation of SF6 | <20 mbar |
Source: IEC 62271
IEC 60376 –SF6 Gas, Technical quality
| Impurity | Maximum Permissible Content |
|---|---|
| Air | 1 vol. % |
| CF4 | 2,400 ppmv |
| H2O | Freezing point -36 °C |
| Mineral oil | 10 mg/kg |
| Overall quantity of reactive, gaseous decomposition products (expressed in HF equivalent) | 7.3 ppmv HF |
Source: IEC 60376:2005
IEC 60480 – Used SF6 Gas
| Maximum Permissible Content | ||
|---|---|---|
| Impurity | Absolute nominal pressure < 2bar | Absolute nominal pressure > 2bar |
| Air and/or CF4 | 3% Volume | 3% Volume |
| H2O | Dew point - 23°C | Dew point - 36°C |
| Mineral oil | 10mg/kg | |
| Overall quantity of reactive, gaseous decomposition product (expressed in HF equivalents) | 50 ppmv total or 12 ppmv for( SO2+SOF2) or 25ppmv HF | |
