tender for supply installation and commissioning of 4tph boiler in hll-kfb with all accessories ; 1 design supply installation and commisioning of 4tph steam boiler with all accessories against buy back of the existing nestler boiler 2 4-tph steam boiler of dual burner system(ng& fo) -engineering design, manufacturing, testing at works, inspection, supply, transportation,leading and all other accessories specified in the tender document for the smooth running of the boiler against buy back of the existing nestler boiler 3 buy back of existing nestler boiler of 4tph,3 pass smoke tube in as and where condition 4 supervision of erection, testing, commissioning, guarantee test run and handing over of boiler and connected accessoriesincluding all documents 5 annual maintenance contract for 5 years (after completing the dlp) 6 annual maintenance contract for 1 year 7 annual maintenance contract for 2 year 8 annual maintenance contract for 3 year 9 annual maintenance contract for 4 year 10 annual maintenance contract for 5 year