work contract for annual overhauling of turbine auxiliaries installed in 1x500 mw unit no 5 at sgtps mppgcl birsinghpur- 1 cleaning of strainers 2 bp suction strainer 3 bfp suction strainer 4 acw self cleaning strainer 5 cep suction strainer 6 debris filters of cw system 7 tdbfp eop filter 8 cleaning of tanks 9 main oil tank 10 tdbfp oil tank 11 ecw make-up water tank 12 hotwell cleaning 13 condensate storage tank 14 deaerator 15 feed storage tank 16 potable water tank 17 service water tank 18 fire fighting tank 19 cleaning of plate type heat exchangers / coolers 20 corrugated ss plate type heat exchangers (sg) total no of plates- 307 1390 x 1000 x 2830 (l x w x h) mm 21 corrugated ss plate type heat exchangers (tg) total no of plates- 461 2010 x 1000 x 2830 (l x w x h) mm 22 mdbfp lube oil cooler 3050 x 275 (l x od) mm 23 mdbfp working oil cooler 2390 x 410 (l x od) mm 24 vacuum pump seal water cooler 3530 x 275 (l x od) mm 25 tdbfp lube oil cooler 3800 x 512 (l x od) mm 26 aoh /repair / replacement of various valves in tg house of 500 mw 27 high pressure valves (pressure above 50 kg / sq.cm) 28 size 300 mm and above 29 size 200 mm and above but less than 300 mm 30 size 100 mm and above but less than 200 mm 31 size 50 mm and above but less than 100 mm 32 size below 50 mm 33 nrv 34 medium pressure valves (pressure between 10 to 50 kg / sq.cm) 35 size 300 mm and above 36 size 250 mm and above but less than 300 mm 37 size 200 mm and above but less than 250 mm 38 size 150 mm and above but less than 200 mm 39 size 100 mm and above but less than 150 mm 40 size 50 mm and above but less than 100 mm 41 size 50 mm and less 42 low pressure valves (pressure below 10 kg / sq.cm) 43 size 350 mm & above 44 size 300 mm & above but less than 350 mm 45 size 250 mm & above but less than 300 mm 46 size 200 mm & above but less than 250 mm 47 size 150 mm & above but less than 200 mm 48 size 100 mm & above but less than 150 mm 49 size 50 mm & above but less than 100 mm 50 size 50 mm & below 51 nrv 52 overhauling of low-pressure butterfly valves 53 butterfly valves 65 mm 54 butterfly valves 80 mm 55 butterfly valves 100 mm 56 butterfly valves 150 mm 57 butterfly valves 200 mm 58 butterfly valves 300 mm 59 butterfly valves 350 mm 60 butterfly valves 400 mm 61 butterfly valves 500 mm 62 butterfly valves 600 mm 63 butterfly valves 700 mm 64 butterfly valves 800 mm 65 butterfly valves 1600 mm 66 butterfly valves 1800 mm 67 butterfly valves 2200 mm 68 charges for radiography & stress releasing of weld joints 69 stress reliving of the weld joint 70 overhaulingof pumps 71 ecw (sg) pump(200/250 mm) pump size/ 130 kw/1480 rpm/800 cu. m/50 m head 72 ecw (tg) pump(350x300 mm) pump size/ 170 kw/1460 rpm/1550cu.m/35 m head 73 acw pump(350/450 mm) pump size/ 160 kw/990 rpm/583.33 ltr. per sec./17.5 m head