Attending to Breakdown maintenance and routine maintenance works in CWPs TWSs Lube water pumps Lube water Booster pumps Chlorine booster pumps TWS Pumps etc for a period of six months from the date of taken over of site

Amount

Cooling Water Pump: Charges for removal of flexible coupling, taper coupling, bearing housing with all internals, stuffing box, lube water line and air vent line, dismantling of bush sealing, drive shaft spider, deflector intermediate shaft, enclosing pipes, muff coupling, pump shaft taper cover, pump casing, impeller and cone lock nut, cleaning of all pump parts and all bolts & nuts and reassembling the pump by reversing the above process and recommissioning the pump after aligning the pump and motor.(Pump capacity:16500 m3/hr)

Cooling Water Fore Bay: Charges for air blasting and cleaning of heavy marine growth in the stop log gate lowering side wall grooves, by using air compressor and cleaning the entrapped heavy silt accumlation in order to facilitate free operation of stop log gate within grooves, in the fore bay of a CWP.

Charges for lifting, leading and lowering the stop log gate, arresting the water (upto - 11 m) lifting the trash rack, cleaning the debris and lowering the slurry pump, dewatering and cleaning the slurry and lifting the pump from suction bay; TWS alignment checking, lowering the trash rack in the suction bay, checking the bell mouth, releasing the stop log gate and painting the TWS cover.

Travelling Water Screen: Charges for removal and renewal of damaged foot sprocket with integral tooth and support angles.

Overhauling of TWS pump, by decoupling the pump; removal of pump assembly, disconnecting the suction and discharge lines; removal of pump casing from bed; dismantling the shaft with sleeve, bearing with catridge, impeller, renewal of bearings, oil seals, assembling the pump parts and pump casing and fixing with bed, aligning, coupling the pump, connecting the suction and discharge lines and commissioning.(1.Pump capacity:110 m3/hr,2.Head-52Mtrs, 3.Speed-1470rpm, 4.Rating-30KW))

Rectification of Trash rack by cutting the worn out / deteriorated Trash Rack Frame at upstream of TWS and strengthening the above trash rack frame, by using MS materials including cost of MS welding rods, cutting gas, consumables and hire charges for T & Ps, in any one of the Trash Rack Assembly of a CWP. (Required MS materials will be supplied by TANGEDCO Ltd.)

Charges for lifting, leading and lowering the trash rack to repair bay, cleaning the trash rack, lifting, leading and lowering the trash rack in fore bay of a CWP, including cost of consumables, hire charges for T & Ps.

Lifting the trash screen from fore bay for cleaning and rectification in the Trash screen and renewing the damaged part of Nylon Screen rope suitably, by using SS materials and spare nylon rope of same size, after rectification lowering the trash screen in fore bay including cost of SS welding electrodes, cutting electrodes, Nylon rope, consumables and hire charges for T & Ps, in any one of the Trash Screen Assembly of a CWP (Required SS materials will be supplied by TANGEDCO Ltd. Required other consumables such as, SS and Cutting electrodes, Nylon rope are under Contractor's Scope of supply to the actual requirement)

Overhauling of lub. water pump, by decoupling the pump; removal of pump assembly disconnecting the suction and discharge lines; removal of pump casing from bed; dismantling the shaft with sleeve, bearing with catridge, impeller, renewal of bearings, oil seals, assembling the pump parts and pump casing and fixing with bed, aligning, coupling the pump, connecting the suction and discharge lines and commissioning.(1.Pump capacity:15-20m3/hr, 2.Head-31Mtrs, 3.Speed-2865rpm, 4.Rating-3.7KW))

Overhauling of lub. water booster pump, by decoupling the pump; removal of pump assembly, disconnecting the suction and discharge lines; removal of pump casing from bed; dismantling the shaft with sleeve, bearing with catridge, impeller, renewal of bearings, oil seals, assembling the pump parts and pump casing and fixing with bed, aligning, coupling the pump, connecting the suction and discharge lines and commissioning.(1.Pump capacity:50 m3/hr, 2.Head-35Mtrs, 3.Speed-2865rpm, 4.Rating-7.5KW))

Charges for overhauling of Chlorine booster pump, by decoupling the pump; removal of pump assembly disconnecting the suction and discharge lines; removal of pump casing from bed; dismantling the shaft with sleeve, bearing with catridge, impeller, renewal of bearings, oil seals, assembling the pump parts and pump casing and fixing with bed, aligning, coupling the pump, connecting the suction and discharge lines and commissioning.(Pump capacity:100 m3/hr)

Charges for SS welding on deteriorated components, equipments and accessories of CWPH and forebay, including cost of consumables and hire charges for T&Ps.

NERINA ENGINEERING WORKS