Tamil Nadu Generation And Distribution Corporation Limited

Tamil Nadu Generation And Distribution Corporation Limited has published NCTPS –II – M-II Circle - TM Dn – ACS - SDn III – Unit-II – ACW & TG/SG DMCW Pumps -Balancing and testing of impellers, reconditioning of pump spares during AOH for the year 2025-2026- 1 Charges for ACW Pump and TG&SG DMCW pump base structure strengtheningand cleaning, painting the complete pump assembly,base structure of the pump base concrete structure, with oil distemper including the charges for T&Ps and consumables.( paint under contractor scope) 2 Charges for Debris flushing, OLTC, HP&LP dozzing pump base structure stengenthening and cleaning, painting the complete pump assembly and connecting pipe lines including the charges for T&Ps and consumables.( paint under contractor scope) 3 Charges for balancing of impeller for ACW,TG/SG pumps.Including charges for Loading and Unloading of pump rotating parts from site to workshop and fromworkshop back to plant.Including the charges for T&Ps and consumables. 4 Conducting Dye Penetrant Test on ACW,TG/SG DMCW pump impeller on the enitire surface of all impeller by using Magnaflux make consumables (Penetrant, Developer and cleaner).Including the charges for T&Ps and consumables. 5 Reconditioning and machining of shaft sleeve (SS 316) material for ACW Pump the work includes rough machining, metal filling by welding, plain turning, trueness checking of requred size required.Including the charges for T&Ps and consumables. 6 Reconditioning of ACW pump casing wear ring Including, conducting DP test to check crack in the existing wornout wear ring, Metal filling at wornout outer surface to the required thickness and machining to the exact suitable dia to match inner dimension of the casing, Machining the wornoutinner surface of the casing wear ring to remove ovality and tomake as concentric circular inner cylindrical surface, Pattern preparation, moulding and casting of sleeve ring by using SS316L metal and machining ofsleeve to required size to fit inside the machined casing wearing, final machining of entire casing wear ring for the required dimension.Including the charges for T&Ps and consumables. 7 Reconditioning of the ACW pump shaft by turning of damaged bearing seating surface, metal filling by welding over the machined surface by suitable welding electrode and again machining of metal surface to the required diameter to fit the bearings at the drive end and Non-drive end, Re-threading of damaged threaded portion of shaft on both the sides of bearing lock nut matching area.Including the charges for T&Ps and consumables. 8 Reconditioning of Bearing housing for ACW/TG&SGDMCW pumps work involes wornout wear Metal filling at wornout inner surface to the required thickness and machining to the exact suitable dia to match inner dimension of the bearing housing. Including the charges for T&Ps and consumables. 9 Reconditioning and machining of 01 No. shaft sleeve (SS 316) material for DMCW Pump the work includes rough machining, metal filling by welding, plain turning, trueness checking of requred size required.Including the charges for T&Ps and consumables. 10 Reconditioning of the DMCW pump shaft by turning of damaged bearing seating surface, metal filling by welding over the machined surface by suitable welding electrode and again machining of metal surface to the required diameter to fit the bearings at the drive end and Non-drive end, Re-threading of damaged threaded portion of shaft on both the sides of bearing lock nut matching area.Including the charges for T&Ps and consumables. 11 Reconditioning of TG/SG DMCW pump casing wear ring Including, conducting DP test to check crack in the existing wornout wear ring, Metal filling at wornout outer surface to the required thickness and machining to the exact suitable dia to match inner dimension of the casing, Machining the wornoutinner surface of the casing wear ring to remove ovality and tomake as concentric circular inner cylindrical surface, Pattern preparation, moulding and casting of sleeve ring by using SS316L metal and machining ofsleeve to required size to fit inside the machined casing wearing, final machining of entire casing wear ring for the required dimension. Including the charges for T&Ps and consumables. . Last date of submission for this tender is 2025-06-27. This is a Mechanical Engineering Service tender in Thiruvallur, Tamil Nadu