Construction of Drain and Sludge Pump Station and disposal of drain water at Kattanachampatty Vanniyar street H/O Kattanachampatty

Earth work excavation and Depositing on Bank with in initial Lead and Lift in H.G Soil for foundation as per S.S 20 B.

Add lift First lift

Cement concrete 1:4:8 Using 40mm ISS H.G Metal including cost and conveyance of all materials to site and labour charges etc complete.

Supply and Erecting Centering for all R.C.C Works including cost and conveyance of materials and labour charges etc complete.

Curved Surface

Plane Surface

Supply and Fabrication of Steel for all R.C.C Works including cost and conveyance of materials and labour charges etc complete.

Reinforced Cement Concrete 1:1.5:3 Mix using 20 mm ISS H.G Metal including cost and conveyance of materials and labour charges etc complete.

1.50m to 4.50m Below GL

Sump raft

Plasteting with CM1:3 mix to 20 mm thick including cost and conveyance of all materials to site and labour charges etc complete.

Supply and delivery of submersible centrifugal sewage non-clog pumps, vertical spindle type pump , wear resistance with submersible motor for the various duty conditions as stated in the annexure. 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 to 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 includingpedestal, 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 3 ph , 415 V( + or – 10 % ) , 50 Hz ( + 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 yond 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 3 core x 1.5 sq.mm copper conductor and for bimetallic switches 2 core x 1.5 sqmm copper conductor shall be provided. Motor shall be supplied with 10 mts 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)Sl.No. Description Unit R

Labour charges for Erection of Submersible pumpset including all labour charges etc complete.

Supply of 110 mm HDPE Pipe (PN 10) including Cost and Conveyance of all Charges etc complete.

Earth work excavation and Depositing on Bank with in initial Lead and Lift in H.G Soil for foundation as per S.S 20 B

Jointing HDPE Pipes and Specials by butt fusion welding / electro fusion welding joints using fusion equipment as per ISO 21307-2011 and as per IS 7634 (part-2) : 2012 including cost of hire charges for butt fusion equipment power supply arrangements etc., complete as per directed by TWAD Board Officers.

Lowering HDPE pipes and specials to trench and laying to proper grade and alignment and as directed by the TWAD Officers

Refilling the excauveted eart for Pipe line trunch including Cost and Conveyance of all Charges etc complete.

GST Amount for providing Service to Government Contract Works for the above RENEWAL Works. { GST Amount is the Total GST Amount for overall quoted amount above this row in column "BB" for all works in this package} (Refer Clause 13.2 & 13.3 of Section 2 of Instruction to Bidders (ITB) of SBD)