supply of 1.chemicals and gases gases type : h2-hydrogen is:1090: purity grade : 99.9 superior to grade 2 2.filling the empty hydrogen cylinder with 7 cubic meter of hydrogen gas @150kg/cm2 3. specifications of hydrogen gas to be filled inside the cylinder a)hydrogen(h2)by mass/volume (minimum) 99.9 b)oxygen (o2)by mass/volume (maximum) 0.05 c)nitrogen(n2)by mass/volume (maximum) 0.05 d)dew point (minimum) -40 deg centigrade 4. agency has to submit test certificate to comply to specifications mentioned. 5. transportation of empty hydrogn cylinders from ntpc simhadri to partys work and back to simhadri in filled condition is in the scope of vendor scope only. 6. loading and unloading of cylinders at simhadri premises will be done by ntpc. loading and unloading of cylinders at vendors premises will be done by the vendor at their own cost. 7. delivery period: material shall be supplied in twenty two lots each lot comprising (210 nos cylinder/lot) as and when intimated by eic in a span of two years from the date of po. 8. item no 2-8 shall be on requirement basis based on the cylinder condition. the quantity may vary as per actual requirement. damaged spares to be returned to ntpc stores along with supply for processing payment. 9. cylinder must be leak proof so that quality and quantity of hydrogen gas remain unchanged up to shelf life. 10. vendor has to ensure caps for all cylinders zero defect in cylinder opening valve, cylinder gas outlet point thread should be in good condition for proper connection to gas manifold. 11. as cylinders few cylinders are due for testing in month of march/april 2023, hydrostatic stretch testing as per is 7285, flushing, cleaning and purging of cylinders, double coating painting, punching and cleaning of cylinder valve, spindle and caps to be carried out and test certificate to be provided as per gas cylinder rule 2004 (or latest), . a. hydrostatic strech test shall be conducted as per gas cylinder rules 2004. the test shall be conducted as per is 5844 specifications. test shall be done at the factory of agency or authorised lab in consulatation with ntpc. b. paint specification: two-pack aliphatic iso cynate cured acrylic finish paint. volume solids 55+/-2, dft (dry film thickness) per coat in microns-50-60#, temperature resistance (minimum) -80 deg c
