procurement of 58,800 m3 of compressed hydrogen gas (i.e., refilling 8400 nos. of cylinder) for generator casing filling at stage-1 &2, sgtpp and repairing of defective hydrogen gas cylinder for one year through open tendering - 1 procurement of 58,800 m3 of compressed hydrogen gas (i.e., refilling 8400 nos. of cylinder) for generator casing filling at stage-1 &2, sgtpp and repairing of defective hydrogen gas cylinder for one year through open tendering. 2 compressed hydrogen gas gr-i as is -1090 compressed hydrogen gas,conforming to is: 1090-2002 with latest revision ,if any , having purity : 99.98 % minm.by volume , moisture content 4 mg/m3 maxm., oxygen : 4ppm by volume maxm. & rest of the parameters as per said is. 3 replace def/bent/damaged safety guard 4 replacement of def/broken valve spindle 5 replacement of defective gland nut 6 replacement of bent/damaged/defective vv 7 replacement of ptfe washer. 8 replacement of brass washer. 9 cleaning of cylinders with oil in valve 10 cylinder painting 11 purging of cylinders 12 testing charges