NCTPS I SE MI circle AOH 24 25 BM Dn Unit III Overhaul of PA fans and its PA fan lube oil

Amount

Charges for De-coupling / Coupling and of PA Fan motor with fan. Including consumables and T&P's.

Charges for cleaning of PA fans suction hood inside and silencer inside assembly. Including consumables and T&P's.

Inspection of bearings, shaft, Impeller and housings: This work includes decoupling of motor and fan, opening of DE and NDE bearing housings, checking the condition of bearings, bearing housings, shaft, impeller, radial & axial seals and it’s clearance. DPT at impeller blades and checking of manhole doors locks and attending minor repair works. Including cost of consumables and T&P's.

Renewal of DE bearing: Loosening the motor bed bolts, shifting a motor for accessibility, arrangement of fixtures and removal of fan coupling, arrangement of fixtures and removal of DE Bearing along with the housing. Checking the bearing mounting area, measuring, rectifying minor defects and polishing. Heating the new bearing to 120 degree and soaking in the oil bath/Induction heater, and mounting. Mounting of coupling by heating, positioning and re fixing of motor in the original position. Including consumables and T&P's. (The Required Material will be supplied by TANGEDCO)

Renewal of NDE bearing : Lifting up the shaft arrangement of fixtures, removal of NDE bearing along with the housing, heating up new bearing to 120 degree by soaking it in oil bath/induction heater, and mounting of bearing along with the housing and bring down the shaft to its original position. Including consumables and T&P's. (The Required Material will be supplied by TANGEDCO)

Replacement of PA fan DE/ NDE bearing housing: Work involves blue matching the housing with pedestal, positioning. Including drawl devolution, transportation. Including consumables and T&P's. (The Required Material will be supplied by TANGEDCO)

Alignment of fan and motor: This work includes taking pre alignment reading, complete dismantling of motor bed bolts and fan housing bolts. Lifting, cleaning of motor foot, base plate, housing base and positioning. Aligning the fan and motor axially and radially within the allowable limits. Box up the fan bearings, checking tightness of all bolts, couple the fan and motor and trial run of the fan. Including cost of consumables and T&P's.

Overhaul of IGV Left and Right side and its gearbox: This work includes loosening of IGV casing bolts and removal of IGV assly from fan casing. Dismantling of connecting rod, guide ring, flaps, angular joints and IGV blades. Cleaning and checking the above internals for any defect and attending repair works and replace the wornout internals. Re assembling, greasing, aligning and bolting the IGV set and normalizing for smooth operation. Removal of gearbox by chain block from its bed, removal of mounting channel. Fixing and welding of mounting channel. Repositioning and fixing the gear box. Opening the actuator gear box, inspection of gears and filling up the lubrication. Including cost of consumables and T&P's.

Renew the weaken PA Fan IGV base : Work involves disconnecting and dismantling of IGV link rod from actuator .Dismantling of actuator base plate and PCC concrete, Making holes in the ground through diamond core cutting machine, fixing and leveling foundation bolts, reconcreting, fixing of base plate with channel, apply two coats of anti corrossive paint and remounting of actuator, reconnecting of links & checking the IGV open/close operation by manually and normalizing. Including cost of consumables and T&P's.

Rectification of damaged portions in PA fan casing: This work includes complete cleaning of casing patch up by fabrication and fixing of M.S.plate required size at damaged portions in fan casing and welding. Including cost of consumables and T&P's.

Charges Welding eroded initial welding joints in the Charges for welding eroded initial welding joints in the PA fan suction hood area 0 mtr to 16 mtr. Including cost of consumables and T&P’s.

Charges for one coat of painting the gear boxes and all inspection door, suction hood, motor hood and platform, thorough cleaning and painting of one coat of red oxide in PA fan suction hood assembly (non insulated area) with enamel paint Including cost of consumables and T&P's.

Cleaning of PA fans lub oil tank and flushing of lub oil lines, Including cost of consumables and T&P’s.

PA Fan lub Oil Cooler, Labour charges for dismantling and cleaning. Including cost of consumables and T&P’s.

Assembling of PA fan coolers, Including cost of consumables and T&P’s.

Hydraulic testing of the PA fan Lub oil cooler @ 15 Kg/Cm² pressure for 30 minutes in the presence of Board In charge. Including cost of special tools for tube cleaning & hydraulic testing, consumables and T&P’s.

Overhauling of PA fan lub oil pump, Including cost of consumables and T&P’s.

Checking the lubricating oil for any contamination, oil draining and renewing the oil in both Drive & Non drive ends for PA fans Bearings, Including cost of consumables and T&P’s.

Renuga Enterprises (BID ID -1068167)