NCTPS I SE MI circle Turbine Maintenance Division Annual Overhaul work for the year 25 26 Specification No 223 25 26

Charges for Servicing/ Renewal of DE /NDE bearings of BFP's Booster Pump: Renewal/ Servicing of DE Bearings / Oil Guards / Thrust pads of Boiler Feed Booster Pump: Work Involves a) De-coupling the feed pump, dismantling the oil and water lines, dismantling the DE side bearing assembly etc., b) Checking of DE Bearings, taking measurements, blue matching, servicing/ replacing if necessary and re-assembling of the Bearing Housings and commissioning of the pump, including consumables and T & P's.

Charges for Servicing/ Renewal of Mechanical Seals of BFP's Booster Pump: Renewal/ Servicing of DE/NDE Mechanical seals & renewal of CW Jacket ‘O’ rings of BFP BP. Work Involves: a) De-coupling the feed pump, dismantling the oil and water lines, dismantling the DE / NDE side bearing assembly, mechanical seals etc. b) Renewal of Cooling water jacket “O” rings by removing cooling water jacket from DE/NDE side of BFP BP using puller arrangement. C) Re-assembling the bearing housing, journal bearing & Mechanical Seals after servicing and assembling, renewal of gaskets for oil lines, checking oil clearance and other allied works, including consumables and T & P's.

Charges for Alignment Checking & Correction in Motor-BFP Booster Pump, including consumables and T & P's.

Charges for Overhauling of Boiler feed Booster Pump 1. Decoupling the pump, dismantling CW lines and oil lines dismantling of bearings mechanical seals at both DE & NDE and their inspection, reassembling of seal cartridge with renewed mechanical sealing elements. Including consumables and T&P's.

Charges for Opening of top cover of split casing dismantling of rotor, inspection and measurement of wear rings, renewal of parts if required. reassembling and positioning of the rotor and closing of top casing. Including consumables and T & P's.

Charges for Mounting of mechanical seals and bearings housing at DE & NDE, checking of various clearances of the bearings and restoring the oil lines and CW lines. Including consumables and T&P's.

Disconnection of the pump from suction and discharge pipe flanges, checking and correcting the pump alignment with motor and rechecking of pump alignment flanges with renewed gaskets. And other such works required for efficient operation of the pump and commissioning, including consumables and T & P's.

Reconditioning of Pump Top, Bottom Casing & Casing Rings etc. Grinding the eroded portions of the casing ring assembly seating areas and other eroded areas in the top & Bottom casings, and casing wear rings and Welding with suitable special electrodes after preheating the casing, and rings as per requirement. Charges including consumables and T & P's.

Metal filling with E 670 welding rod on the stepped portion of the pump shaft, Machining and smooth finishing of the welded portion of BFB Pump shaft NDE Side. (Welding Electrodes will be provided under contractor scope) Metal filling with E 670 welding rod on the stepped portion of BFB pump shaft, including consumables and T & P's.