TTPS Operation Circle CAD CWPH I Unit II Annual Overhauling of internal and external assembly and Reconditioning of C.W.P Internal spares 2A, 2B and 2C of Unit II

Charges for overhauling of 2 Nos. internal assembly of cooling water pump 2A, 2B & 2C . Dismantling the seal water connection top bearing cooling water suction and return line etc. decoupling the pump from motor, dismantling the internal assembly constituent parts, cleaning and through inspection of parts, renewal of worn out parts, reassembling all the pipe lines, trial running and commissioning of the pump.

Charges for overhauling of 2 Nos. external assembly 2A, 2B & 2C Dismantling of external assembly parts one by one from the cooling water pump from which the internal assembly had already been removed through cleaning & inspection of the external assembly parts, renewing the worn out parts, and re-erection of the external assembly parts. (Spares required for the work will be supplied by TANGEDCO).

Charges for scrapping, cleaning and painting 2 coats of enamel paint or the internal assembly parts of cooling water pumps, including the cost of consumables and paint.

Charges for scrapping the mud, marine growth etc. cleaning the parts with diluted acid and painting 2 coats of enamel block paint on external assembly of C.W.Pump including the cost of paint & consumables.

Charges for reconditioning of thread portion in muff coupling assembly in C.W.P 2A, 2B & 2C. This work involves, transporting the muff coupling assembly work to repair yard fixing the muff coupling of pieces two numbers in working table with special type of fixtures, cleaning the muff coupling bolt seating thread in muff coupling with suitable tap set joining the two halves of muff coupling assembly and checking redial and axial alignment in heavy duty lathe.

Supply of Muff Coupling Allen Bolts 1.5 mm pitch Size M 16 x 40 mm for Cooling water pumps 2A, 2B & 2C

Charges for removing the worn out stud bolt 12 Nos from the top shaft enclosing tube flange and removing the burs from the internal threads of shaft enclosing tube by means of tapset and checking the face out, including T&P hire charges and consumables etc.,

Charges for loading the rubber bearing holders in the lathe, removal of eccentricity or burrs forms in the inner bore of bearing holder by polishing the bore and checking the trueness of the flange faces and machining the bore if necessary, unloading the bearing holder from the lathe.

Supply of 100 mm Rubber Bearing for Cooling Water Pump 2A, 2B & 2C

Supply of 110 mm Rubber Bearing for Cooling Water Pump 2A, 2B & 2C

Supply of 85 mm Rubber Bearing for Cooling Water Pump 2A, 2B & 2C

Charges towards renewal of Impeller shaft sleeves 2 Nos. by dismantling and removal of Impeller from Impeller shaft assembly by specially made jig on the Impeller. Loading the Impeller shaft along with jig in the hydraulic press. Simultaneously heating up of Impeller hub cooling Impeller shaft using dry ice, applying load by hydraulic press inch by inch, releasing the Impeller shaft continuously and separating the Impeller shaft and Impeller. Cutting and removing the worn out shaft sleeve 2 Nos. and fixing new shaft sleeve 2 Nos. on the Impeller shaft by suitably heating up the sleeves and polishing the Impeller bore and fixing the Impeller shaft, including cost of consumables like gas, dry ice, hire charges for hydraulic press and special jig etc., (Material will be supplied by the board at free of cost).

Supply of Top shaft sleeve for Cooling water pump.

Supply of Impeller shaft bottom sleeve for Cooling water pump.

M 20 x 100 mm SS 316 Bolt and nuts

Supply of 12.5 mm PTFE Gland rope