Name of Work:- SPECIAL REPAIR TO UNSV IRON REMOVAL FILTER AND ALLIED SERVICES AT AMINGAON UNDER GE GUWAHATI
Sl. No.
Item Description
1
Excavation in trenches, not exceeding 1.5m wide and not exceeding 1.5m in depth; not exceeding 10sq.m on plan and getting out in soft/loose soil complete all as specified and as directed.
2
Removing excavated materials to a distance not exceeding 50m and depositing where directed at a level not exceeding 1.5m above the starting point, complete all as specified.
3
Returning, filling in, including spreading, levelling, watering and well ramming in layers not exc 25 cm complete all as specified and as directed.
4
Supply and installation of iron removal filtration plant with the following specification(a) Filter vessel/cylinder diameter 1200mm, bed depth 1000mm (b) Flow rate - 20m3/hr (c) Premium Mno2 media 70% manganese content (ACTIC Mnox or equivalent), iron removal capacity for 4 ppm inlet qty 2250 Kg (d) Supporting media - Pebbles (layer 1) three sizes : 1\\"-3/4\\", 3/4\\"-1/2\\", 1/2\\"-1/4\\", clean, rounded, silica based Qty 300 Kg (e) Supporting media - Gravel (layer 2) Size 2-4mm, clean, silica based Qty 200 Kg (f) Supporting media (layer 3) - Fine silica sand 0.5-1mm effective size 0.6mm, uniformity coefficient =< 1.5 Qty 150 Kg (g) Supporting media Anthracite (layer 5) particle size 0.8-1.2mm, specifica gravity 1.4-1.6 Qty 100Kg (h) pH adjustment pH dosing system to maintain 6.5-8.5, automated dosing if pH <6.5 (e.g Sodium hydroxide) (j) Chlorine dosing 4 ppm chlorine (100% basis) to match 4 ppm iron inlet, automated dosing system 1 No (k) Water quality - TSS total suspended solids<5 ppm.Item Continued from Sr item No.4.10
5
Item Continued from Sr BOQ item No.4.00 here-in-above:-(l) Water quality- turbidity< 1 NTU (m) Backwash system automated back wash, flow rate 30-40m3/hr, frequency as per design Qty-1 No. (n) Piping & Valves PVC/SS piping, valves for inlet, outlet, backwash and drain - 1 set (o) Warranty : 2 year warranty on vessel, media, dosing system including RCC foundation of capacity 5K gallon including installation, commissioning and testing complete all as per design with necessary fittings and fixtures to complete the plant in all respact and fully operational complete all as specified and as directed. Note : Old UNSV iron removal plant shall be submitted to MES store, nothing extra shall be paid.
6
M&L for 100mm bore GI pipe medium grade water tube with all fittings like socket/union/Tee/Reducer/ Nipple etc laid in trenches /floor/pillar and connection in position including taking down old pipe complete all as specified and as directed. Note : Cost of earth work like Excavation, returing and filling and removal will be measured and paid seperatley under relevant item of schedule.
7
Supply and fixing in repair 100 mm bore cast iron flanged type sluice valve, (ISI marked), conforming to IS 14846-2000; Class PN-1.6 with stainless steel spindle and brass check nut (non raising spindle type) including all jointing materials and mild steel nuts, bolts, washers, rubber / fibre board gaskets (neouprene) etc and testing complete all as specified and directed.. Please Enable Macros to View BoQ information
We takes all possible care for accurate & authentic tender information, however Users
are requested to refer Original source of Tender Notice / Tender Document published by
Tender Issuing Agency before taking any call regarding this tender.
