bids are invited for custom bid for services - boq item 1 supply erection and dismantling of scaffolding , custom bid for services - boq item 2 cleaning surface preparation for circumferential weld integrity assessment and repaint , custom bid for services - boq item 3 cleaning surface preparation for longitudinal weld integrity assessment and repaint , custom bid for services - boq item 4 spot cleaning surface preparation for metal surface thickness measurement , custom bid for services - boq item 5 removal of hotcold insulation for assessement and refixing new insulation after work , custom bid for services - boq item 6 internal cleaning of fire water tank , custom bid for services - boq item 7 internal cleaning of diesel tank , custom bid for services - boq item 8 mechanical or power tool cleaning of tanksvessels surface as per sspcsp3 standard , custom bid for services - boq item 9 high build epoxy zinc phosphate primer dft 2x40 microns includes supply of paint material , custom bid for services - boq item 10 coal tar epoxy finish paint dft 2x100 microns includes supply of paint material , custom bid for services - boq item 11 hiring of 20 kl diesel tanker for safe keeping of diesel there shall be no transportation , custom bid for services - boq item 12 purging of tanks with nitrogen gas , custom bid for services - boq item 13 support services of a skilled technician , custom bid for services - boq item 14 support services of an unskilled technician