bids are invited for oxygen dosing system for sagardighi extension unit 5- as per description at sl. no. 2.1.1 of pg. no. 2 of tech. spec i.e. oxygen dosing skid - including oxygen cylinders mounted on each skid , as per description at sl. no. 2.1.2.1 of pg. no. 2 of tech. spec i.e. accessories - injector assembly , as per description at sl. no. 2.1.2.2 of pg. no. 2 of tech. spec i.e. accessories - 15 nb, ss 316, 18 bwg tubing for oxygen dosing , as per description at sl. no. 2.1.2.3 of pg. no. 2 of tech. spec i.e. accessories - ss 316 tube fittings -- tees , as per description at sl. no. 2.1.2.4 of pg. no. 2 of tech. spec i.e. accessories - ss 316 tube fittings --90 elbows , as per description at sl. no. 2.1.2.5 of pg. no. 2 of tech. spec i.e. accessories - filled oxygen cylinders , as per description at sl. no. 2.1.2.6 of pg. no. 2 of tech. spec i.e. accessories - rack to hold 33 filled oxygen cylinders , as per description at sl. no. 2.1.2.7 of pg. no. 2 of tech. spec i.e. accessories - compression fittings , as per description at sl. no. 1 a. of pg. no. 3 of tech. spec i.e. mandatory spares - electronic transmitters - pressure , as per description at sl. no. 1 b. of pg. no. 3 of tech. spec i.e. mandatory spares - electronic transmitters - flow transmitter - mass flow controller , as per description at sl. no. 2 a. of pg. no. 3 of tech. spec i.e. mandatory spares - solenoid valves - complete solenoid valve assembly , as per description at sl. no. 2 b. of pg. no. 3 of tech. spec i.e. mandatory spares - solenoid valves - coil - single or double coil type , as per description at sl. no. 3 a. of pg. no. 3 of tech. spec i.e. mandatory spares - gauges - pressure gauge , as per description at sl. no. 4 a. of pg. no. 3 of tech. spec i.e. mandatory spares - erection hardware - transmitters manifold , as per description at sl. no. 4 b. of pg. no. 3 of tech. spec i.e. mandatory spares - erection hardware - impulse line root , source valve , as per description at sl. no. 4 c. of pg. no. 3 of tech. spec i.e. mandatory spares - erection hardware - impulse line isolation valve , as per description at sl. no. 4 d. of pg. no. 3 of tech. spec i.e. mandatory spares - erection hardware - impulse line drain valve , as per description at sl. no. 4 e. of pg. no. 3 of tech. spec i.e. mandatory spares - erection hardware - impulse line fittings , as per description at sl. no. 4 f. of pg. no. 3 of tech. spec i.e. mandatory spares - erection hardware - impulse pipe , as per description at sl. no. 4 g. of pg. no. 3 of tech. spec i.e. mandatory spares - erection hardware - copper , ss tube , as per description at sl. no. 4 h. of pg. no. 3 of tech. spec i.e. mandatory spares - erection hardware - fittings for copper, ss tube , as per sl. no. 1.1 of pg. no. 4 of tech. spec. i.e. supervision of erection and commissioning - lump sum charges per visit for engineer - except daily charges , as per sl. no. 1.2 of pg. no. 4 of tech. spec. i.e. supervision of erection and commissioning - lump sum daily charges for engineer