service contract for in situ servicing of different valves prds scaph and aph wash system and other hp valves during u 3 upcoming overhauling at sgtpp- 1 different hp valve servicing[u3 oh] 2 servicing of hp valve size 40mm-50mm,globe valve class 2500-3000,mo/ho 3 drum hydrastep valve, size:40 mm, c2500, ho 4 servicing of rh spray control isolating valve ,gate valve,65 mm, class-1500,mo(r-26,r-27,r-28,r-29,r-78,r-79,r-80,r-81 5 servicing of rh attemperation blockvalve(sd-10),size:100 nb, class-1500 6 servicing of rh attemperation control valve, size:50 nb,class-1500 (sd-15,sd-16,sd-17,sd-18) 7 servicing of rh attemperation nrv,65mm,c1500(r-41) 8 servicing of prds valve , size-200nb,class(300-3000), gate valve, mo/ho(asv-20,asv-21,asv-74,asv-27, asv-30,asv-71,asv-39) 9 servicing of prds valve , size-300nb,class 300,gate valve, mo/ho(asv-47,asv-37,asv-35) 10 servicing of prds valve , size-250nb,class 300,gate valve, mo/ho(asv-61,asv-48,asv-50, asv-42) 11 servicing of prds valve , size-100nb,class 300,gate valve, mo/ho(asv-75,asv-41) 12 servicing of prds valve , size-80nb,class 300,gate valve,ho(asv-40,asv-55) 13 servicing of prds attemperationvalve, 40mm, c 800, gate valve, mo (cdv-89,cdv-93,cdv-97, cdv-98, cdv-86, cdv-92) 14 servicing of prds attemperation control valve,40mm,c800(cdv-87, cdv-90) 15 servicing of scaph valve-200nb-c300-gate valve-mo/ho(assv- 5, assv-13, assv-2, assv-4, assv-10, assv-12) 16 servicing of scaph valve-80nb-c300-ho-gate valve(assv-6, assv-7, assv-8, assv-9, assv-14, assv-15, assv-16, assv-17) 17 servicing of lp valve ,size:150 nb,class-150, gate valve(aph basket washing area) 18 servicing of lp valve ,size:200 nb, class-150, gate valve(aph basket washing area) 19 servicing of lp valve ,size:250 nb,class-150, gate valve(aph basket washing area) 20 actuator servicing 21 servicing of nrv , size:350nb, class-300(asv-24) 22 servicing of nrv , size:200nb, class-300(asv-31) 23 servicing of nrv , size:125nb to 150 nbclass-2500[bottom ring hdr nrv b-100,(size-150 nb),sh attemperation nrv s-105,s-119(size-125 nb)] 24 servicing of prds valve, size: 350 nb,class-3500, gate valve, ho(valve tag no. asv-76) 25 servicing of 125 mm gate/globe valve,class-2500/1500, mo(s-90,s-91,s-92,s-93,s-133,s-134,s-135,s-136,r-53,r-54)