Kerala Water Authority-KWA has published Amrut 2015 2016 Phasei Augmentation Modernization Of Water Supply Distribution System In Alappuzha Municipality Supply And Installing Of Ultrasonic Flow Meter On 800 Mm Di Clear Water Pumping Main At Premises Of Water Treatment Plant At Karumadi Amrut 2. Submission Date for this Tender is 02-11-2021. Pipe Laying Tenders in karumadi Kerala. Bidders can get complete Tender details and download the document.
| Sr No | CorrigendumDate | Corrignedum | CorrigendumType | NewSubmissionDate |
| 1 | 25-Oct-2021 | date corrigendum | Date | 28-10-2021 |
| 2 | 28-Oct-2021 | date corrigendum2 | Date | 02-11-2021 |
| Sl. No. | Item Description |
| 1 | APPENDIX.A |
| 2 | Supply and Installation of Clamp-on type Ultrasonic Flowmeter.The power connection, required to operate the flow meter, the contractor must to madeavailable the facilities to draw the power supply from the WTP s per the IEA standards.( Input measured variable Flow Velocity (differential delay proportional to flow velocity) Input measuring range Typically, v=0-15 m/s (0-5 ft/s) at the specified measuring accuracy Operable flow range Over 150:1 Current Output Galvanically isolated, Full-scale value adjustable, Temperature coefficient: typ. 2A/ Deg C, resolution: 1.5A, Active: 4-20 mA, Load resistance: <700 ohm Pulse/ Status Output Galvanically isolated, Open Collector, 30 V DC/ 250 mA, Passive Signal on Alarm Current output: Failsafe mode selectable; Pulse/ frequency output: Failsafe mode selectable Low flow cut-off Switching point for the low flow freely selectable Supply Voltage for Transmitter 85 to 260 V AC, 45 to 64 Hz; 20 to 55 V,45 to 64 Hz; 16 to 62 V DC Power Consumption (Including measuring sensor) 85 to 250 V AC: < 12 VA; 20 TO 28 V AC: <7 VA; 11 TO 40 V DC:<5 W Power Supply Failure Lasting min. 1 power cycle; Histo ROM/ T-DAT save measuring system data if the power supply fails Potential Equalization For Potential equalisation, no special measures are necessary Ambient temperature for Transmitter -25 to + 60 Deg C (-13 to + 140 Deg F) Ambient temperature for Sensor -20 to + 80 Deg C (-4 to + 176 Deg F) Degree of Protection for Transmitter IP 67 (NEMA 4X) Degree of Protection for Sensor IP 67 (NEMA 4X), Optional: IP 68 (NEMA 6P) Materials Transmitter Wall-mounted housing: powder-coated diecast aluminum Display elements • Liquid crystal display: illuminated, two lines each with 16 characters• Custom configuration for presenting different measured values and status variables• 1 totalizer Operating elements Local operation via three operating keys Remote operation Operation via HART protocol and Field Care). |
| 3 | Excavating trenches of required width for pipes, cables, etc including excavation for sockets, and dressing of sides, ramming of bottoms, depth up to 1.5 m, including getting out the excavated soil, and then returning the soil as required, in layers not exceeding 20 cm in depth, including consolidating each deposited layer by ramming, watering, etc. and disposing of surplus excavated soil as directed, within a lead of 50 m : All kinds of soil (Ref. Item No. 2.10.1 of DSR) |
| 4 | Excavating trenches of required width for pipes, cables, etc including excavation for sockets, and dressing of sides, ramming of bottoms, depth exceeding 1.5m but not exceeding 3 m, including getting out the excavated soil, and then returning the soil as required, in layers not exceeding 20 cm in depth, including consolidating each deposited layer by ramming, watering, etc. and disposing of surplus excavated soil as directed, within a lead of 50 m: 1.50m to 3.0m All kinds of soil (Ref. Item No. 2.11 of DSR) |
| 5 | Bailing out water with 5 HP engine and pumpset including conveyance to the site, errection, dismantling and taking back of engine and pump, cost of fuel lubricating oil and other stores pay of staff etc. complete. NEW DATA (Prepared based on PHED SDB - Item No.1070 |
| 6 | Providing steel sheet shoring to the sides of the trenches to depths of above 4.00 m but not exceeding 6.00m using 6 mm M.S. sheet 0.50 M wide stiffen on edges with 50 mm x 50mm x 6 mm M.S. angles driving down vertically on either side one after another in lines and levels with suitable pile driving equipments and accessories to a maximum depth of 0.50 M below the bottom of the proposed excavation 0.5 M above ground level suitably braced by horizontal walling pieces at 75 x 150 mm x 8 mm angles on either side at intervals not exceeding 1.50M and horizontal screw jack type struts at 1.50M intervals and maintaining the shoring till the pipes are laid and works are completed, dismantling, cleaning and restacking for reuse including all labour, hire charges and conveyance for equipments, tools and plants and sundries etc. complete. |
| 7 | Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level: 1:3:6 ( 1 cement : 3 coarse sand : 6 graded stone aggregate 40 mm nominal size) |
| 8 | Providing and laying in position machine batched and machine mixed design mix M-25 grade cement concrete for reinforced cement concrete work, using cement content as per approved design mix, including pumping of concrete to site of laying but excluding the cost of centering, shuttering, finishing and reinforcement, including admixtures in recommended proportions as per IS: 9103 to accelerate, retard setting of concrete, improve workability without impairing strength and durability as per direction of Engineer - in-charge. Note:- Cement content considered in this item is @ 330 kg/ cum. Excess or less cement used as per design mix is payable or recoverable separately. All work upto plinth level |
| 9 | Centering and shuttering including strutting, etc. and removal of form for: Walls (any thickness) including attached pilasters, butteresses, plinth and string courses etc. |
| 10 | Steel reinforcement for R.C.C work including straightening, cutting, bending, placing in position and binding all complete upto plinth level Thermo - Mechanically Treated bars of grade Fe-500D or more |
| 11 | Smooth finishing of the exposed surface of RCC work with 6mm thick cement mortar 1:3 ( cement : 3 fine sand). |
| 12 | Conveying MH cover 560x560mm with frame and fixing to line and levels including all necessary chipping and masonry work etc complete. |
| 13 | Supply of 560x560 mm dia MH cover with frame (Heavy duty) |
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