Karur corporation-WATERSUPPLY fund-Supply , delivery and installation of 20 M3/hour of submersible centrifugal sewage non-clog pumps in kulathupalayam railway cross in mandalam -1 at Karur City Municipal Corporation.

Dismantilling the existing RCC platform including clraing away from the site etc., complete

Supplying and erecting centering for plane surfaces such as RCC Floor/Roof Beam, Lintels, Cantilever Beams, Bed Blocks etc.. with ecessary supports and strutting upto 3.60m height in all floors with all cross bracings using MS Sheets made of 10 gauge thick welded with MS angle of Size 25mm x 25mm x 3mm for boarding laid over Steeladjustable Span of Size 2m x 2m(expandable upto 3.60m) and Silver Oak Joists of Size 10 x 5 cm spaced at 50cm to 60cm c/c and supported by Steel Adjustable Telescopic Props of Size 2m x 2m (expandable upto 3.60m) made with outer steel pipe with dia 50mm (3.60mm thick) and inner steel pipe with dia 40mm (2.90mm thick) Spaced at not more than 50 to 60cm c/c , etc complete complying withstandard specifications. Steel adjustable span and Steel Adjustable telescopic props shall be provided as directed by the departmental Officers. (Payment for centering shall be given after the concrete is laid)

Plain Cement Concrete 1:2:4 (one cement, two crushed stone sand and four hard broken stone jelly) using 20mm jelly for wearing coat including laying, compacting, finishing and curing, etc., complete as per standard specificatins and as directed by the departmental officers.- Mixing by manual means

Supply and delivery Discharge Upto 20 M3/hour of submersible centrifugal sewage non-clog pumps, ertical spindle type pump, wear resistance with submersible motor for the various duty conditions. Pump shall be capable of handling min 100 mm solid size with sewage specific gravity of up to 1.05. Pump shall be of robust construction, Liquid passages shall be finished smooth and designed as to allow free passage to solids. Pump Impeller should be of Non-clog semi open type, single vane / multi vane preferably contra bloc or vortex impeller design. Double mechanical seal with silicon carbide faces should be provided to protect the motor from ingress of sewage along the shaft. The critical speed of the rotor shall be at least 30% above the erating speed. Pumps should have double bearings between the pump & motor. The bearings life shall be minimum 100,000 hrs of operation with greased for life. Pump should be provided with automatic coupling device including pedestal, duck foot bend, stainless steel guide pipe or related accessories of suitable size to facilitate lifting and lowering into guide rails for easy maintenance. Pump shall be provided with a stainless steel lifting chain conforming to BS 970 Gr 304. Pump speed shall be of 9600 rpm for high duty pumps and 960/1450 rpm for low duty pumpsets. Casing and impeller should be of CI Gr. FG 260:IS210 more preferably with hardened impeller.Shaft should be of stainless steel AISI 410. All the fasteners and bolts shall be of AISI 410.The submersible motor shall be operated with 3ph, 415 V (+or– 10%), 50Hz (+or-5 %) dry induction type. Motor shall be capable of giving rated output without reduction in the expected life span when operated continuously. The rotating assembly shall be dynamically balanced as per standards. The starting current of the motor shall not exceed 200% of rated full load current for Star / Delta or ATS starting under any circumstances .The motor shall be suitable for full voltage star delta / ATS starting. The locked rotor current of the motor shall not exceed 600% of full load current unless otherwise specified. Motor shall be designed to withstand 120% of rated speed for two minutes without any mechanical damage, in either direction of rotation. The motor vibration shall be within the limit specified in applicable standards. Motor should be of IE2, plosion proof compatible for VFD operation together with star-Delta /ATS starter, protection against increase in stator winding temperature (15 deg Celsius), bearing temperature, leakage in the stator ousing and terminal box shall be provided and to be suitably interlocked with the control panel for tripping the pump in case of increase in temperature beyond set limit.Insulation class shall be of “Class H” and degree of protection shall be of IP 68 as per IS 4691. Motor shall be suitable for continuous operation in fully submerged or partially submerged condition.The pumpset shall be supplied with power cable of PVC insulated and PVC heathed, copper, flexible, round type with required conductor size and number of cores as per starting method and of specified length for continuous use under water and air. The control cable of PVC insulated, PVC sheathed, flexible for stator winding temperature sensor 3core x 1.5 sq.mm copper conductor and for bimetallic switches 2core x 1.5 sqmm copper conductor shall be provided. Motor shall be supplied with 10m of round submersible copper cable of suitable size. The non clog submersible pumpset shall be provided with suitable starter control panel having all protections as mentioned above. (upto 5 HP - DOL Starter, above 5 HP to 25 HP -Star Delta Panel and beyond 25 HP shall be ATS)

Erection of Discharge Upto 20 M3/hour of submersible centrifugal sewage non-clog pumps using of special tools as directed by departmental officers.

Manufacturing,supply, delivery and fixing of EB metering panel as directed by departmental officers.

Supply, Delivery and installation of PLC unit with Actuator Control panel inbuilt program memory back up, RTC, Adequate number of analogue, digital inputs & outputs along with PLC Panel with all internal wirings, 24V DC power supply unit, 12 channel Solid state relays, terminal blocks etc., Input Power: 24 VDC CPU Speed : 0.3 µs for Bool Instruction, 0.6 us for Word Instruction Application Program Memory: 128 K bytes Flash Source Code Memory: 1 MB flash can Store Project File with Symbolic Names, Comments, Visualisation Screens Marker Memory: 32 K Points (4 K bytes) Data Memory : 24 K bytes Retained Memory : Stored in FRAM, Programming languages: Instruction List IL/Function Block Diagram FBD/Ladder Diagram LD /Sequential Function Chart SFC/Continuous Function Chart (CFC) PLC system shall confirm to EN 61131-2 for operating & environmental conditions

Supply and delivery 100 mm dia of G I Pipes (Medium) As Per Is 1239/Part I/2004 as directed by the departmental officers.

Lowering GI pipes 100 mm dia and specials in the trenches and laying to proper grade and alignment, jointing with GI Specials and as directed by the departmental officers.

100 mm dia Welding of GI pipes as directed by the departmental officers for the sizes

Supply and Delivery 100 mm dia of MS specials as per IS 7322-1985 without inside lining and outside coating.

Supply and delivery of 100 GI pipe supporting clamp set as directed by the departmental officers

Supply and fixing MS frame in manhole as directed by the departmental officers

Please Enable Macros to View BoQ information