Public Health Engineering Department Tender

Providing and fitting of protection devices to 4 Nos. 500 KW / 670 HP HT motors installed at HT Pump House Sitlee. The job includes dismantling of electric connections, opening of side covers of the motors by providing and fitting of bearing temperature sensors in the bearing housings 1 No. each at DE and NDE each after cavity formation in the bearing housing. Job also includes providing and fixing of winding temperature sensors – 6 Nos. in the winding of each motor along the winding periphery at equal distance from each other for proper indication of winding temperature after dismantling of motors. Refitting of dismantled motors, remaking of disconnected electric connections and testing thereof. Job also includes providing and fitting of PT – 1 No. to the VCB panel of HT motors. Complete job includes cost of material, labour charges and testing at site. Complete job

Revival of Lohar Pumping unit No. 7 at CPS Sitlee by way of complete rewinding of rewinding of 350 HP Horizontal Sq. cage (Low speed 1440 RPM) Motor with B/F Class insulating material and S.E Copper wire including dismantling, varnishing , heat treatment for any current leakages, loading/ unloading, fitting, making connections, Calibration of panel at site. Testing on no load at workshop and then on full load. Job also includes providing and fitting of bearings 6319 (C3) and 6322 (C3) at DE & NDE. Complete job. Repairs to Automatic Transformer Starter of 350 HP motor installed at CPS Sitlee by way of disconnecting all the electric connections, dismantling of transformer from oil tank and shifting to workshop for repair. Complete rewinding of Auto Transformer Starter assembly by way of extracting out 3 No. worn out coils. Making of new coils as per original design by using superior quality wire and fixing them into core and back carriage to Sitlee The job involves washing/ cleaning of oil chamber to remove dirt, dust and greasy material with the help of cleaning chemicals and scrubbers. Welding of the oil tank of the ATS and painting of the ATS. Reassembling the transformer and fitting it in oil tank. Reconnecting it with the starter by providing and fitting of new leads. Providing/filling of oil 50 litres in the tank to top up the level. Providing and fitting of contactor 550A-1 No. and repair to the other 2 No. contactors by washing and cleaning them with cleaning chemicals to remove the carbon dust and dirt. Then replacement 1 No. damaged contactor kit to 400 A Contactor. Reassembling and refitting the contactors in to the starter, Repairs to bus bars by scrubbing out damaged insulations and re-insulating the bus bars, repairing of internal control wiring, job also involves replacing damaged over current relay, Timer relay, checking and tightening all the connections. Testing of the ATS by reconnecting the incoming and outgoing electric cables after proper thimbling. Job includes the cost of material, labour, carriage to and fro charges. Job includes carriage of Pump to workshop, dismantling of pump and extracting out all the components. Then fabrication and fitting of new Pump shaft 1 no. (SS), Fabrication and fitting of body bushes- 5 Nos., Fabrication and fitting of neck rings- 5 nos. Fabrication and fitting of impellers - 2 nos. and repair to impellers 3 nos. by way of brazing and turning to the required size-7nos.Fabrication/fitting of diffuser bushes 8 nos. Providing and fabrication of shaft protection sleeves (G.M) at DE and NDE by way of boring and turning to the required shape and size-2nos. Fabrication of MS Check nut of MS material by turning finishing to the required shape and size-3nos. Providing and fitting of Gun metal disc plate and thrust plate 1 no. each as per original sample. Providing and fitting of Brass bearings bush 2 nos. at driving and non driving ends. Fabrication and fitting of gland stud out of M.S Material as per original sample-1nos. Assembling of pump and carriage of pump from workshop to the site of work, unloading and shifting the pump to the base frame. Placing the pump on the base frame and making alignment of the Pump with the motor. Providing and fitting of coupling bolts along with rubber bushes as per required size. Complete job includes cost of material, labour charges, carriage to & fro and testing of the pump at site. Job also includes dismantling of 150 mm dia delivery line of the pump from the existing 500 mm dia Sitlee- Lohar new rising main and shifting the same on the Sitlee- Lohar old rising main by way of providing, fabrication and fitting of new 150 mm dia MS delivery line from HC Pump to the manifold of the Sitlee- Lohar old rising main (2.5 mtrs. approx.) after cutting and welding by using good quality electrodes to make the joints leak proof. Providing and fitting of 150mm dia cast steel Non return valve (NRV) of class 150 and Sluice valve conforming to latest IS specifications along with MS flanges as per requirement at site.