Our process for recording top-ups of SF  Low gas pressure alarm automatically received by Network Control  Top-up work order automatically raised when low gas alarm is received  Competent Person (holding a valid SF6 handling certificate) tops up the asset to within the manufacturer’s recommended pressure range; the magnitude of the top-up is a mandatory input field to close the work order SF6 must be treated with care, in a manner compliant with the EU F-gas Regulations.