Tiruppur Corporation_Supply and Erection of Pumps and Laying of Pumping Main in Slum Clearance Board Apartment in Samathuvapuram Bharathi Nagar in ward No.5.

Amount

Pumping Main

Earth work excavation and depositing on bank with initial lead and lift as initial of 10 M and lift of 2 M in narrow trenches for laying of pipes for water supply works in Hard stiff clay, stiff black cotton, hard red earth shales, murram gravel, stoney earth and earth mixed with small size boulders and hard gravel soil including refilling the sides of foundation in layer of 15m thick watering ramming depositing the surplus earth in the premises as directed by the departmental officers etc., complete complying with standard specification.

Supply and delivery of 150mm C.I. Spun Pipes as per IS 1536/2001 specification.

Lowering of 150mm C.I Pipes and specials in the trenches and laying to proper grade and alignment and as directed by the Departmental Officers

Jointing the 150mm C.I/ D.I - S/S pipes and specials with molten lead and Yarn including caulking the joints. (Including cost of jointing materials)

Refilling the trenches with excavated earth (other than sand) in layers and watering, ramming and consolidation as per standard specification.

Plain Cement concrete 1:4:8 [one cement, four M-sand and eight course aggregates] using 40mm size Hard Broken/Machine crushed Granite Stone Jelly including dewatering if found necessary and laid in layers of not more than 15cm thick and compacted etc., complete complying with standard specification.

Supply of Pumpsets, Electro Mechanical Items and Erection

Supply and delivery of submersible centrifugal sewage non-clog pumps, vertical 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 operating 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, explosion 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 housing 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 sheathed, 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) (Discharge 100 to 200 M³ / Hour above 15m upto 20 m head)

Supply and fixing of LT METERING BOX as per IE rules and TANGEDCO norms Up to 50HP/37 KW (which includes LT meter panel board, 6 Nos. suitable fuse carriers.

Supply and delivery and laying of following LT Cables and Copper Cables as directed by the Departmental Officers

4 Core x 4 Sq.mm L.T. CABLE

2.5 sq.mm 3 Core Flat Type Copper Cable

Twin CI Earthing as per IS 3043/1987 Upto 25 HP installation as directed by the Departmental Officers.

Supply and dellivery of 100mm CI D/F Sluice Valve with cap/ wheel as per IS 14846/2000 PN 1.0 with ISI marking and with 5 years warranty as directed by the Departments Officers

Supply and delivery of 100mm Non Return Valve conforming to IS and with 5 Years warranty as directed by the Departments Officers

Supply and delivery of 100mm C.I. Double Air Valve as per ISI 14845/2000 and with 5 Years warranty as directed by the Departments Officers

Supply and Delivery C.I D/F Pipes as per IS 7181/1986 & IS 1537/1996 and Cast Iron D/F Specials as per IS 1538/1993 specification.

Suction Side - 100mm

100mm CI D/F Pipe - 2m Length

100mm CI D/F Pipe - 1m Length

100mm CI 90 Degree D/F Bend

100mm CI D/F - 0.50m Length

150mm x 100mm CI D/F Taper

Delivery Pipe - Common Header - 150mm

150mm x 150mm x 150mm D/F Tee

150mm CI D/F Pipe - 0.50m Length

150mm CI Flanged Dummy

150mm CI 90 Degree D/F Bend

150mm CI D/F Pipe - 2.00m Length

150mm CI D/F Duck Foot Bend

150mm CI Flanged Socket Tail Piece

150mm dia Pressure Gauge including all accessories as per specification (For Suction and Delivery to be mounted on wall on Teak Wood Board)

Add G.S.T. @ 18%

MASTER MIND (BID ID -1322393)