Major repairs to existing pumping machinery along with allied works at CPS Bantalab under State Capex Budget.

Amount

Major repairs to 25,000 GPH x 100Mtrs. Head x 100 HP HC pump set along with allied works at CPS Bantalab. The job includes decoupling of pump and motor by unfastening of coupling bolts. Dismantling of pump and motor from base frame and shifting to workshop using crane, manual labour, other tools and tackles. Dismantling of pump in workshop and providing / fabrication of new ss pump shaft as per sample, turning and machining to bearing size. Providing and fitting of impeller 1 no. along with impeller guide rings. Fabrication / providing and fitting of shaft protection sleeves and body bushes. Providing and fitting of white metal bush bracket along with bushes at DE side. Assembling of the pump. Repair to the pump body, providing and fitting of bolts, nuts, packing material and grease etc. Fabrication / providing and fitting of CI coupling pulley as per sample along with coupling bolts and rubber bushes. Shifting back to site. Repair to rotor of 100 HP HC motor by dismantling the induction motor and separating the rotor and stator. Rebuilding of shaft ends by way of cutting, welding, remetaling, turning and finishing to bearing size. Replacement of 1 no. damaged rotor side cover as per sample. Providing / fitting of bearings at DE & NDE side as per sample and greasing them. Assembling the motor and shifting back to site. Fitting of pump and motor on base frame and fastening the coupling bolts after proper alignment and providing packing material. Making necessary electrical connections and testing the pump set on full load conditions. Complete job including cost and carriage of materials, loading and unloading at workshop and at site, labor charges etc. Major repairs to 50,000 GPH x 45Mtrs. Head x 62 HP HC pump set along with allied works at CPS Bantalab. The job includes decoupling of pump and motor by unfastening of coupling bolts. Dismantling of pump and mo1tor from base frame.Shifting pump and motor to workshop using crane, manual labour, other tools and tackles. Dismantling of pump and repair to the pump shaft by turning and machining to bearing size. Providing and fitting of impeller 1 no. along with impeller guide rings. Fabrication / providing and fitting of shaft protection sleeves and body bushes. Providing and fitting of bearing bracket as per sample – 1 no., providing and fitting of bearings at DE and NDE side. Assembling of the pump. Repair to the pump body, providing and fitting of bolts, nuts, packing material and grease etc. Fabrication / providing and fitting of CI coupling pulley as per sample along with coupling bolts and rubber bushes. Shifting back to site. Repair to rotor of 62 HP HC motor by dismantling the induction motor and separating the rotor and stator. Rebuilding of shaft ends by way of cutting, welding, remetaling, turning and finishing to bearing size. Providing / fitting of bearings at DE & NDE side as per sample and greasing them. Assembling the motor and shifting back to site. Fitting of pump and motor on base frame and fastening the coupling bolts after proper alignment, greasing and providing packing material. Making necessary electrical connections and testing the pump set on full load conditions. Complete job including cost and carriage of materials, loading and unloading at workshop and at site, labor charges etc.

Design, fabrication, installation, testing and commissioning of 1000 Amps ACB cum distribution panel to be installed at CPS Bantalab. Distribution panel shall comprise of 1 no. 1000 Amps ACB, 1 no incoming and 6 no outgoing connections with 3 nos. 630 Amps. MCCB’s, 1 no. 500 Amps MCCB, 1 no. 400 Amps MCCB and 1 nos. 160 Amps MCCB at outgoing points. The panel should be provided with a protection relay for over volt, under volt, single phase, reverse phase and unbalanced phase protection. The panel should be designed to withstand the load of 2 no’s 250 HP pumping units running simultaneously. The panel should be enclosed in a sturdy enclosure and is to installed on a foundation block after properly grouting the foundation bolts. The panel is to provided with proper locking mechanism. The panel is to be powder coated with a paint of approved colour to make it shock proof. Job also includes providing and fitting of 3.5 core armoured 630 mm sq. AL LT cable to be laid between the voltage stabilizer and the distribution panel. Making connections of all the motors with the distribution panel after proper insulation and thimbling. Making all incoming and outgoing connections after proper thimbling and testing the panel on full load.

Design, fabrication, installation, testing and commissioning of LT control panel with built in fault analyzer suitable for running 240 HP HC pump set having specification 50000 GPH x 152 Mtrs. Head. The panel should be dust and vermin proof fabricated out of 14/16 SWG CR sheet and provision for fixing it on the wall or on the ground with the help of anchoring bolts should be made. The panel should be sturdy enough for vibration free operation and should be equipped with suitable locking / sealing arrangements. The structure should be provided suitable entry and exit holes for incoming and outgoing cables. The panel is to be given two coats of anti-rust primer and two coats of steel grey enamel paint. The panel should have equipped with following components / features: - 1. The panel should be fitted with 630 Amps MCCB and a set of RYB indicators at incoming side. 2. Star delta starter: - The panel should be fitted with starter comprising of 2 no. air break contractors, 1 No. MNX 500 contactor for main and 1 no MNX 400 contactor for delta supply and 1 No. MNX 500 Air break contractor for star operation, 1 no. timer for changing over the supply of motor from star to delta, 2 Nos. push buttons for start and stop operation of motor. 1 No. MCB 2 Amps. for the protection of internal control wiring. A neat and clean internal control wiring should be made with flexible, copper cables to complete the star delta circuit of outgoing supply. (Contactors used should be of L&T / Siemens / Schneider Make) 3.Protections devices: - The panel shall be fitted with 1 No. bi-metallic relay and 1 no. fault analyzer so as to protect the electrical equipment’s from the following faults: - i) Voltage related faults: - Single phasing, under voltage, over-voltage, unbalanced voltage. ii) Current Related faults: - Over current / load, dry running, unbalanced current / load, earth leakage, short circuiting. The panel shall also be provided with ammeter and voltmeter of appropriate capacity. All the equipments used such as contactors, relays, mccb etc. should be of standard make such as havells / seimens / schneider / l&t. Testing: Providing and fitting of 120 mm sq. single core PVC copper cable to be laid between voltage stabilizer and control panel (3 leads of 10 mtrs. each approx.) and from control panel to motor (6 leads of 5 mtrs. each approx.) along with thimbles as of required current carrying capacity. Making of all the electrical connections and testing the running of motor on no load then coupling the motor with pump by way of matching both the pulleys after providing and fitting of coupling bolts with rubber bushes then testing and commissioning on full load condition after ensuring the necessary incoming of water from suction line to the impeller after removing the air lock by operating the air vent valve. All the mechanical jobs shall be performed by skilled technicians and electrical jobs by skilled electricians. Complete job including cost and carriage of materials i.e pump, motor, LT Control Panel, laying of delivery and suction line, valves, cables etc and labour charges.

M/S RAGHUNATH MECHANICAL AND ELECTRICAL ENGINEERING WORKS

G S ENGINEERING WORKS