BS EN 60480:2005 Guidelines for the checking and treatment of sulphur hexafluoride (SF6) taken from electrical equipment and specification for its re-use
2005BS EN 60480:2005 Guidelines for the checking and treatment of sulphur hexafluoride (SF6) taken from electrical equipment and specification for its re-use
2004BS EN 60480:2004 Guidelines for the checking and treatment of sulphur hexafluoride (SF6) taken from electrical equipment and specification for its re-use
1975BS 5209:1975 Code of practice for the testing of sulphur hexafluoride taken from electrical equipment