Details: supply & refiling co2 gas, of 99.9% purity conforming to is-307/1966 in kstps empty cylinder of capacity 31 kgs (in cylinder) quantity tolerance +/- 2% allowed dry nitrogen gas having purity of 99.995%(uhp) & shall have oxygen & moisture content upto 2 ppm. other impurities like hydrocarbon, mercury, co2, sulphur compound should not be present. the dew point of the dry nitrogen gas at ntp must be less than -50°c or less (cylinder having 7 m³ capacity at 150 kg/cm²) in kstps cylinders sf6 gas (duly filled in cylinder) specification of sf6 gas (i) minimum purity of sf6gas 99.97% (%by weight) (ii) maximum air 0.01% (% by weight) (iii) maximum cf4 0.02% (% by weight) (iv) maximum h2o 1.4ppm (ppm by weight) (v) maximum acidity as max. hf 0.1 ppm (ppm by weight) (vi) maximum hydrolysable (ppm by weight) fluorides as hf 1.0 ppm (vii) maximum minral oil 1.0ppm (ppm by weight) (viii) toxicity non toxic (in kg)
Sector: Power Sector