SPECIAL REPAIRS TO REPLACEMENT OF BER PRESSURE FILTER AND ALLIED WORKS IN PUMP HOUSE NO-2 AT AFA HYDERABAD.

Amount

Dismantling and taking down existing Pressure fitler plant including all accessories and shifting to E/M store yard complete all as specified and directed by Engineer-in-Charge

Supply, Erection, Testing and Commissioning of Catalytic type Iron Removal Plant cum Pressure Filter of capacity 10000 Gallons per Hour (45000 LPH) during normal flow rate The plant should be capable assume the Turbid Content not be more than 40PPM during Monsoon, pH valve 6.8 and Iron upto 2 PPM for standard quality of potable water. Note :- After erection & testing of the plant, a chemichal analysys of the filtered water should be carried out, by the contractor in a Govt. / Govt. approved Laboratory to check the potability of the filtered water as described in IS :10500. Test report to be submitted to the Engineer-in-Charge for necessary acceptance.The testing charge shall demmed to be included in the unit rate quoted.

Brief Description of the Plant The details of plant and its accessoriesshall be described as under. Overall rate quoted for the Plant will be inclusive of all the following items / works :- IR Filter Shell (a) Shell to be made as per IS: 2062 (Revised) and to be fabricated out of 10 mm thick M.S. plate having the following dimention :- Dia : 2500 mm X Height : 1500 mm (b) Thickness of Disc : 10.0 mm (c) Thickness of Bed Plate : 12.0 mm

Frontal (Face) Pipe line & Other pipe Lines (a) Frontal Pipe line to be constructed with medium grade ERW M.S. Pipe of 100 mm bore including all M.S. pipe fittings / flanges / Nuts, Bolts, Washers / Gaskets etc. and necessary welding, drilling , threading complete as required at site. Make of the Pipe : TATA / JINDAL / ZENITH / BST (b) Inlet connection from existing raw water pipe line to filter (9.0 RM approx) and outlet connection from filter to the inlet pipeline of UG Sump (9.0 RM approx), to be made with medium grade 100 mm bore ERW M.S. Pipe / Medium Grade GI Pipe. The cost of the materials and labour for laying these pipe lines (including connections) shall deemed to be included in the unit rate quoted.

Valves in Frontal Pipe Line (a) Cast Iron Wafer type & lever operated Butter Fly valve of bore 100 mm - As per OEM's design Make : L&T / Rmco / LEADER / VENUS / AUDCO

Oxidation Chamber a) Capacity : 10000 GPH / 45000 LPH (b) Thickness of M.S. shell body : 6.0 mm (c) Thickness of Disc : 8.0 mm (d) Thickness of Bed Plate : 8.0 mm (e) Size of the Shell : Dia : 1000 mm x Height : 1200 mm (f) Material of construction & Construction Code :ISS 2062 & ISS 2825 (Unfired Pressure Vessel)

Filter Media (a) Sand & Gravel of suitable Quantity for IR filter (b) MnO2 Compound of suitable quantity (1.33 CuM approx) for I R Filter & Oxidation Chamber (c) Chemically treated media of suitable quantity (1.21 Cum approx)

Back Wash System One Mono block pum set with motor ratings 3HP 440V with AC suction 75mm x discharge 65mm model KDS - 318 or equvalent

Dosing System (K2 SO4Al2 (SO2) 3 24H2O) Potassium aluminium sluphate which includes 14 ltrs capacity C.I Alum Pot and brass fittings. Sodium Carbonate (Na2 CO3) includes 14 LTRS Capacity C I Soda Pot and brass fittings.

Miscellaneous Items (a) LDPE Strainer - 720 Nos (Approx) for both filters (b) Pressure Guage & Sampling Cock for raw & filtered water.- 04 Set each (c) Air Vent System : 25 mm bore GI pipe with Gun Metal Gate Valve (d) Under bed system : Perforated plate fittedwith 5/8" double nut PVC strainer (e) Filteration Rate : 300 Gallon per Sq.ft per hr for Pre Filter and 180 Gallon per Sq.ft per hour for I R Filter (f) Reciprocating type Air Compressor of air discharge capacity 12 cfn with 3HP Single stage single cylinder type including belt, belt guard, Motor Starter, Air receiver, Pressure Switch, Pipe Lines etc. all as per OEM's recommendation and should comply with IS : 5456 standard.

Civil Work and Painting (a) P.C.C. Platform suitable with foot stool foundation including drain and pit to accommodate the entire plant as per OEM's design. (b) The entire plant with all of its accessories and pipe lines will have to be painted with 2 coats of 1st quality synthetic enamel paint over a coat of metal primer, by spray painting, as per the shade approver by Engg-in-charge .

Design Criteria The plant should be designed as per the following guide lines. (a) Iron Content of Raw Water as Fe : 2.0 ppm (b) pH value : 6.8 (c) Turbid Content : 40 ppm (max) during monsoon. (d) Design Pressure as per ISS - 2825 : Test Pressure : 4.5 Kg / cm² & Working Pressure : 3.5 Kg /cm² (e) Optimum Velocity (Face pipeline) : 2.0 CuM /Sq M / Sec (f) Design Code : As per CPHEEO - Govt. of India (Page No - 661) Make of the Plant : RMCo / ION Exchange / Pearl Filter/Ion India ltd.

Supply, fixing and testing of MS pipe line 150mm dia Medium grade 6 mm thick ERW including MS specials and flanged joint with flanges and painting with one coat of red oxide primer and two coats of coal tar epoxy paint on the entire pipe line including taking down of old unserviceable pipes complete all as specified and directed.

Supply, fix and testing MS pipe line of 200 mm bore medium grade, 6 mm thick (ERW) including MS specials flanged joint with flanges and painting with one coat of red oxide primer and two coats of coal tar epoxy paint on the entire pipe line with including taking down of old unserviceable pipes complete all as specified and directed.

Supply and fix in replacement cast iron sluice valves 150mm Size ,heavy duty PN1.6(ISI marked) complete with stainless steel spindles, check nuts gaskets, bolts nuts and washers both sides flanged including jointing material and necessary modifications for fixing in locations as required at site including taking down the old unserviceable valve complete all as specified and directed by the Engineer-in-charge

Supply and fix in replacement cast iron sluice valves 200mm Size ,heavy duty PN1.6(ISI marked) complete with stainless steel spindles, check nuts gaskets, bolts nuts and washers both sides flanged including jointing material and necessary modifications for fixing in locations as required at site including taking down the old unserviceable one complete all as specified and directed by the Engineer-in-charge

Supply & fixing of GI tubing medium grade of 80mm bore pipe laid in trenches along wall/on roof ceiling etc, including necessary fittings including taking down of old unserviceable pipes complete all as specified and as directed by Engr-in-Charge Note : The necessary earth work, excavation, will be measured and paid seperately.

S&F in repairs Pressure gauge dial size 150 mm, with bottom connection complete of range 0 to 14 kg / Sqcm with necessary fittings including necessary drilling and tapping with existing GI/CI pipe (in Position) complete iall as specified and as directed by Engineer-in-Charge

Construction of brick masonry valve chamber of size 1200 x1200 x1200mm internal size built in cement mortar 1:4 including base concrete (1:4:8) type D2, plastering with cement mortar 1:4 including provision hinged cover made with MS sheet of 3.15mm thickness and MS Angle 40x40x6 complete with locking arrangement with 7 lever pad lock (01 No), lifting handle all as shown on standered TD drawing ,specified Note:Unit Rate quoted against this item is deemed to be included necessary excavation earth work ,RFR all as specified and directed by engineering in charge.

Digital type water level indicator 150mm size digital display cable system suitable for under ground sump with suitable fixing arrangement for including necessary copper cable 0.5 Sqmm 03 Core from sensor to display unit with following specfiications to be operated with 230Volts single phase AC supply including fixing arrangement in a weather proof enclosure with front view glasses model DDS-6 of SECO make or equivalent including taking down old unserviceable water level indicator complete all as specified and directed. Size of Upper Unit : Lenght 22" , Width- 8" and Height - 8" Display Unit - 8 display in one panel Panel Size - Length 40", Width-44" and Height-6"

Excavation in trenches not exceeding 1.5m wide and not exceeding 1.5m in depth in hard and dence soil and getting out for repairs to water mains including forming of bootom surface to required level and gradient all as specified and directed

Returning, filling in trenches including spreading leveling, watering and ramming in layers not exceeding 25 cm complete all as specified and as directed by Engineer-in-Charge.

Removing the surplus soil to a distance exceeding 50 metres and not exceeding 250 metre and depositing where directed at a level not exceeding 1.5 metres above the starting point complete all as specified and as directed by Engineer-in-charge.

POWER CONSTRUCTION COMPANY