bids are invited for manual clean using non sparking brushes and sand paper - heavy scrapping and surface preparation upto sspc sp2 or st.3.(external surface of pipe line as specified). mechanical cleaning manually shall be done by brass wire brush, emery/sand papers etc as instructed by engineer-in-charge. removing oil, dust, grease,mill scale and moisture and making the surface dry including all materials,consumables,labour; scaffolding; equipments etc. complete.rate shall be paid in m2 basis of the scrapped surface excluding the cost of scaffolding , 2 coat surafce tolerant epoxy@ 125 micron per coat - supply and application of 2 coat surafce tolerant epoxy@ 125 micron per coat for external surface of tank shell, fixed roof, tank appurtenances, expansion line,tank staircase, rolling ladder, still well platform sprinkler & foam pourer supports. this shall act as primer for the top coat and shall be compatible with the tank surface as well as the top coat , 2 coat of acrylic aliphatic polyurethane @ 30 micron per coat - supplying and applying finish paints on the prepared pipe surface including all labour; scaffolding; consumables; equipments; primer etc. complete as per specificationspaint shall be as per attached list of bpcl recommended manufacturers.finish coat :two coats of acrylic aliphatic polyurethane at 30microns/coat in aluminium shade/fire red/luminuos yellow/golden yellow shade as per is : 5.rate shall be paid in m2 basis of the painted surface excluding the cost of scaffoldingin addition to the above2 coat of acrylic aliphatic polyurethane @ 30 micron external surface of tank shell, fixed roof, tank appurtenances, expansion line etc , 1 coat of inorganic zinc silicate primer external surface of at 65 microns per coat tank deck roof, tank appurtenances,external surface of tank deck roof - supplying and applying primer on the prepared surface including all labour; scaffolding; consumables; equipments; primer etc. complete as per specifications (primer sh