tender for rejuvenation of headworks under sub div store and workshop, bikaner - providing and placing of new filter media as (i) sand shall be hard and resistant quartz or quartzite and free of clay, fine particles, soft grains and dirt of any description. (ii) effective size shall be 0.20 to 0.30 mm. (iii) uniformity coefficient not be more than 5.0 nor less than 3.0. (iv) ignition loss should not exceed 0.70% by weight. (v) soluble fraction in hcl acid shall not exceed 7.0% by weight, (vi) silica content should not be less than 95% (vii) specific gravity shall be in the range between 2.55 to 2.65 (viii) wearing loss shall not exceed 3.0%. and as per specifications given in is: 8419 (part-i). (ix) the sand should not contain more than 2% of calcium and manganese calculated as carbonate. filter media (fine sand and coarse sand) should be processed through. disintegrator and dust separator in automatic plant including screening of sand to desired. specification and washing and cleaning of sand with water by aqua wash technology at quarry site. the sand shall not contain more than 5% acid soluble matter as determined by solubility test in appendix b of is: 8419 (part-i) (fine sand 0.2 to 0.3mm and coarse sand 1.0 to 1.7mm) (for ssf) 3 providing, lowering, aligning, fixing in position in pipe line, ci double flanged swing type non return valves (nrv)of approved make of following pressure rating & dia complete, confirming to is: 5312 (part -1)/ 2004 (amendedup to date) and of following specifications: body, cover & disc of grey cast iron of is:210/ fg200. face to face dimensions as per is 5312 (part -1):2004 , flanges drilled as per is:1538. epoxy(non-toxic & suitable for drinking water) applied on body, cover and disc inside and outside . body seat ring of ss/cs door face ring - epdm/ neoprene (food grade quality) ,shaft ofss- aisi- 410 ,hinge malleable cast iron / ss aisi 316 ,bonnet gasket epdm, bush- leaded tin bronze/ ptet, gasketepdm/nbr,nut-bolt as per is:1363 and is: 1367 (galvanised steel) ,insertion rubber of black epdm 6mm thick. suitablesupport structure as per directions of eic including jointing & jointing material, labour, testing and commissioning along with pipeline as per technical specification & as per direction of engineer-in-charge.note: rates are exclusive of tail piece/ dismantling joints and earth work. 4 100 mm dia 5 150 mm dia 6 providing, installation, testing and commissioning of centrifugal monoblock pump set conforming to is 9079 , 2 pole motor operating at synchronised speed of 3000 rpm with requisite moc impeller, priming funnel, cock, suitable flanges at suction and delivery side. pump shall have common shaft for pump and motor. motor shall be suitable for working on 415 v ± 10%, 3 ph, 50 hz a.c. supply. motor shall be tefc type and pump set shall be suitable for working at various discharge and head requirements as per scope of work. pump shall be erected onc.c. foundation / cross channels / rsj frame block with suitable foundation bolts grouted in c.c. foundation block etc. complete in all respect as perspecification, scope of work and direction of engineer in charge of following power rating, suita ble for prescribed duty conditions mentioned in td.18.5 kw (25.0 hp) 7 supply & installation of 3 phase isi marked submersible motor pump set ofthree star or better rating of beeand as per is: 8034-2018 (pump) and is 9283-2013 (motor) or as amended up to date of approved make of following duty condition with required accessories including making connection suitable for tube well/dcb. the job includes lowering of motor pump, installation of complete fitting & accessories, jointing of electrical cables up to switch board, testing of submersible pump set and interconnection up to water mains, complete in all respect. - 15 kw (20 hp) and above, head above 120 mtr. 8 clearing jungle including uprooting of rank vegetation, grass, brush wood, trees and saplings of girth upto 30 cm measured at a height of 1 m above ground level and removal of rubbish upto a distance of 50 m outside the periphery of the area cleared.