Hiring of Contingency pumping system for Supply of makeup water from Ujjani Dam required for Solapur STPP
SALIENT TECHNICAL FEATURES:
"Salient Technical Features of the equipment / systems / services covered in Bid No.: 40074144 dated xx.04.2017 are mentioned below. These Salient Technical Features are mentioned only to facilitate the prospective bidders to prima-facie understand the requirements under the tender and shall not in any way limit or alter the scope of work and technical features / specification of equipment / systems / services covered in the Bidding Documents. Detailed provisions in regard of scope of work and technical features / specification of equipment / systems / services, contained in the Bidding Documents shall be final and binding."
BRIEF SCOPE OF WORK:
The brief scope of work for the subject package is as under:
1. Desired water flow through two makeup water pipe line is 1500 m³/hrs/pipeline at 100 m head, so as to deliver the 72000 m³/day and a minimum guaranteed flow of 2160000 m³/month.
2. Initially bidder has to commission the only one makeup water pipe line within 15 days of intimation by NTPC. NTPC shall inform the installation and commissioning of pumping system for another line at later date which shall be need to be commissioned within 15 days.
3. To mobilize, deploy and provide a suitable pumping system (on rental basis) to pump water from Ujjani Dam area to pipeline provided by NTPC near MUW pump house at Ujjani Dam
4. Specific location of installation, sizing of pumps and motors to be evaluated/finalized by the bidder by visiting the site.
5. The Vendor can locate the pumping system either at the deepest point (OR) at different locations based on the water level in the reservoir (OR) it can be located on a floating platform/Barge. Appropriate arrangement including flexible pipes, cables etc., required for connection from the pumps (both suction and discharge end), and platform/barge, if any required shall be in the scope of the bidder. Also necessary and suitable connection/joining the final discharge piping of the pumping system at the terminal point (MUW pipeline, 900NB, MS) shall be in the scope of the bidder.
6. Low Tension Electric supply (415V, 3 phase) required for the Pumping system shall be arranged by NTPC. LT board, Cabling and termination of power supply at feeder end, proper routing of the cables and termination at starter and at motor end is in the scope of bidder.
7. Local starter/soft starter, Power and control cables, all the associated instrumentation for continuous running of the pumps/motors have to be provided by the bidder.
8. The pumping system has to be operated by the bidder on continuous basis deploying adequate manpower for a minimum period of 01 year (365 days) which may be extended with same rate, terms and conditions for another Three months (90 days) at the discretion of NTPC.
9. The pump motor units and its associated instrumentation etc. should be suitable for operation in external environment or suitable canopy/shed has to be provided by the bidder.
10. Operation and maintenance of the pumping system including deployment of operating and maintenance personnel for 24 hrs is in the scope of the bidder.
11. The pumping system design/operation curves, technical datasheets should be submitted by the bidder for approval of NTPC before supply of pumps. The variation of pump performance should be within +/-10%.
12. Mobilization and demobilization of the pumping system and supplying all the required T&P for smooth running of the system is in the scope of the bidder.
13. Repairs and maintenance of supplied pump motor system and associated equipment's is in the scope of the bidder. The scope of work also includes establishment of maintenance facilities at site, if required for repair and maintenance of pumps.
14. Suitable platforms/site leveling/requirement of excess earth for back filling or leveling to place the pumping system which may be due to variation in water level of the dam or as per NTPC requirement to give the front for other working agencies throughout the contract shall be in the scope of the bidder.
SALIENT FEATURES:
1. The Pumping system can be onshore/offshore (barge mounted) pumps (Horizontal/vertical/submerged) connected in parallel and/or in series manner, with the necessary isolation system/valves.
2. The Pumping system shall lift water from Ujjani Dam area, the level of which varies from 481.03 mtr to 501.40 mtr MSL and pump the same to break pressure tanks at 535 mtr MSL.
3. The Pumping head should be 100 mtr minimum so that water at flow rate of 1500 m³/hr/pipeline be comfortably received at Break pressure tanks which is at a distance of approximately 47 KM from MUW Pump House at Ujjani, passing through a 900NB cross country pipelines laid by NTPC.
4. The flow meters/transmitters duly tested and calibrated shall be installed by NTPC for measurement of quantity of water supplied.
5. All the equipment installed shall be suitable for outdoor application subjected to Heavy Winds, Rain, Stormy water lashing etc., and equipment to be selected for outdoor application and suitable protection/IP class shall be provided for same accordingly. Additional Junction boxes as required for connection of the motor cables for adjustment of cable length from MCC to Pumping units during variation in water level of the dam shall be provided by the contractor throughout the contract period. At present app. Length of power cable shall be 400mtr from MCC to pump, any changes in cable length due to variation in water level of the dam or rerouting of cables as per NTPC requirement shall be supplied by bidder without any extra cost implication for shifting of the pumping system.