Repair and maint of External Water Supply system including Pipe lines and pumping sets at Shillong Garrison under ARC and MC Laitkor

M&L for Decoupling pump from motor, taking out impellor, bush, bearing shaft, stuffing box, reassembling the same after replacing the defective parts & carrying out the necessary repair, remetalling, turning, polishing the pump shaft, replacement of steel studs and unserviceable nuts & bolt and testing complete all as directed for the following capacity of pump sets (Note replacing of ball bearing, impellor, stuffing box, etc shall be measured and paid for separately under respective item of schedule) (a) Above 20 HP and upto 30 HP

(b) Above 10 HP and upto 20 HP

(c) Above 5 HP and upto 10 HP

Material and labour for replacement of bronze impellor of existing size for the following capacity of centrifugal pump sets (a) Above 20 HP and upto 30 HP

(b) Above 10 HP and upto 20 HP

(c) Above 5 HP and upto 10 HP

Replacement of ball bearing of existing size suitable for the capacity of centrifugal pump sets :- (a) Above 20 HP and upto 30 HP

(b) Above 10 HP and upto 20 HP

(c) Above 5 HP and upto 10 HP

Material and labour for replacement of stainless steel shaft of pump set of following capacity. (a) Above 20 HP and upto 30 HP

(b) Above 10 HP and upto 20 HP

(c) Above 5 HP and upto 10 HP

Taking out old unserviceable stuffing box of pump and supply and fixing of stuffing box made of cast iron , along with Tee bolt, graphite gland packing etc complete all as directed for the following capacity of pumps :- (a) Above 20 HP and upto 30 HP

(b) Above 10 HP and upto 20 HP

(c) Above 5 HP and upto 10 HP

M&L for Decoupling pump & motor, opening the body of motor, taking out burnt/defective winding wire carefully without damaging the stator, cleaning the slot, rewinding the stator with super enameled copper winding wire of existing gauge along with insulating material, greasing varnishing the bearing including testing complete all as specified and as directed for the following capacity of motor :- (a) Above 20 HP and upto 30 HP

(b) Above 10 HP and upto 20 HP

(c) Above 5 HP and upto 10 HP

(d) ditto but pressure pumps of RO Plants

Material and labour for replacement of unserviceable pump/motor coupling of any size or shape with shaft bore of capacity 25 to 30 HP centrifugal pump set

Material and labour for replacement of unserviceable pump/motor coupling of any size or shape with shaft bore of capacity 7.5 to 15 HP centrifugal pump set

M & L for replacement of old/unserviceable foot valve with brass foot valve of size 100 mm dia confirming to IS-4038

-ditto- but of size 80 mm bore

Material and labour for taking out submersible pump set from bore well with the help of chain pulley and tripod , rewinding of burnt out motor with super quality copper winding wire of required gauge insulation with insulating material, drying, varnishing etc, replacement of bushes and re-assembling with pump, lowering in the same bore well and testing complete all as specified and directed for submersible pump set 10 HP/20 HP complete.

Supply and in replacment of three core copper flate cable of 6 Sqmm for submerssible pump set including connection and testing complete all as specified and directed

M & L for Opening and dismantling of existing old filter media of various sizes , unserviceable strainers, packings and nuts/bolts/washers etc of IRPs and deposited to place where directed including cleaning the surfaces of IRP and all accessories with emery paper, preparing the surfaces and painting with two coats of synthetic enamel paint over a coat of red oxide primer on outer surfaces and two coat of black bituminous paint on inner surfaces and connecting pipes as per colour codes and filling fresh filter media with replacement of unserviceable parts ect all as specified and directed for following locations. (Note : Replacing of filter media, valves, stainers and guages shall be measured and paid for separately under respective item of schedule) (a) ARSU, Demsiniong - 02 Nos (b) Old DGAR Complex - 01 No (c) ARASU, Happy Valley - 01 No (d) Laitkor Garrison - 04 Nos

supply and filling of treated barakar sand of 16/32 mm size complete all as specified and directed

supply and filling of Gravel of size 1", 3/4", 1/2", 3/8", 1/4", 1/8" complete all as specified and directed

Supply and replacement of plastic strainer of approved quality and size as existing all as specified and directed

Material and labour for replacement of existing MNO2 from oxidation chamber with new MNO2 lumps to be used as oxidizing agent complete all as specified and directed

Supply and fix diaphragm valves cast iron angular type of size 80 mm dia complete all as specified and directed

Supply and fix butterfly valve wafer type cast iron (as per IS:13095) of size 80 mm dia complete all as specified and directed

Supply and fix water pressure gauge duly calibrated of existing size complete all as specified and directed.

Supply and fix gun metal gate valves/globe valves with CI wheel of approved quality for iron pipes and fixed of size 25 mm dia complete all as specified and directed

M&L for Cleaning and disinfection of RCC underground sump of 35000 ltrs at ARPS, Laitkor by using mechanical cum pressure machine comprising the following process-after pumping out the water in the tank including removal of silt, sludge deposited in the tank with wire brush and removing vegetation if any, washing with bleaching powder in inner surfaces complete by tan clean process as below, writing cleaning dates with white enamel paint on black colour surface all as specified and directed. (a) Pumping out water and evacuation of internal surfaces including floors and ceiling with machanical presure machine (b) Cleaning of internal surface including floor walls and ceiling with mechanical scrubber and washing the surface with high pressure water jet. (c) Dis-lodging the dirt layers with high speed water jet and draining out the sludge water (d) Applying solution of H2O2 (Hydrogen per oxide) in the ration of 1:100 ltrs of water to complete internal surface of tank (e) removing vegetation if any on outer surface of the UG sump (f) Washing of complete surface with clear water to the entire satisfaction (g) Colour washing with double coats of distempering and enamel paints on iron surfaces including writing cleaning dates with white enamel paint on black colour surface

-ditto- but of capacity of 75000 ltrs located at following locations :- (a) Happy Valley Pump House - 01 No (b) Shopping complex area (Near JCOs/OR Md Accn) - 03 Nos (c) Power house (Main Taking Point) - 01 No (d) Filter house No 1 (Near ARTB Hosp) - 01 No

Cleaning to the internal surfaces of the PS tanks / RCC tanks at about 15 meter staging, by using wire brush, bleaching powder etc and removing the sledges sticky to the internal surfaces of the tank, draining out muddy water by opening drain valve. Re-washing of internal surfaces with clear water, arresting leakages by filling joints/welding etc including writing the date of cleaning for over head PS tank/RCC tank of capacity 10000 ltrs located at following locations complete all as specified and directed. (a) Pension depot - 01 No (b) DG Hills - 01 No (c) ARPS - 01 No

-ditto- but of capacity of 20000 ltrs located at following locations :- (a) Happy Valley - 01 Nos (b) Old DGAR - 01 No (c) DG Hills - 02 Nos (d) Filter house - 01 No (e) DGSE - 04 Nos (f) Shopping complex - 01 No

-ditto- but over head tank of capacity 45000 ltrs located at following locations (a) Old DGAR - 02 Nos (b) ARSU - 03 Nos (c) Happy Valley - 05 Nos (d) DGSE - 02 Nos (e) Shopping Complex - 01 No (f) Filter house - 02 No

-ditto- but over head tank of capacity 55000 ltrs located at DGSE Laitkor

-ditto- but over head tank of capacity 90000/95000 ltrs located at following locations (a) Happy Valley - 02 Nos (b) Old DGAR - 01 No (c) Filter House, Laitkor - 01

Supply and fix in replacement of Sluice Valve flanged of class 1.0 PN, 100 mm (4”) dia, ISI marked complete

Supply and fix in replacement of Sluice Valve flanged of class 1.0 PN, 80 mm (3”) dia, ISI marked complete

Material and labout for painting steel work with delux multi surface paint of required shade for PS tank 20000 ltrs capacity. Two or more coat applied @0.90 ltr/10 sqm over and under coat of primer applied @0.80 ltr/10 sqm of approved brand of manufacture.

S&F inreplacement of Chlorinated Polyvinyl Chloride (CPVC) pipes, having thermal stability for hot & cold water supply including all CPVC plain & brass threaded fittings This includes jointing of pipes & fittings with one step CPVC solvent cement ,trenching ,refilling & testing of joints complete for following sizes all as specified and directed (a) 50 mm nominal outer dia Pipes

(b) 40 mm nominal outer dia Pipes

(c) 25 mm nominal outer dia Pipes

Proviving and fixing gun metal gate valve with CI wheel of appoved quality. (a) 25 mm nominal bore

(c) 40 mm nominal bore

(d) 50 mm nominal bore

(e) 65 mm nominal bore

(f) 80 mm nominal bore

Proviving and fixing brass stop cock of 20 mm nominal bore complete all as specified and dircted

M&L for Earthing complete with galvanized earth plate electrode 60 cm x 60cm x 6mm thick buried directly in ground to the depth of not less than 2.25 mtr below ground level with top edge of earth plate or a depth not less than 1.50 m below ground level connected to GI strip 32 x 6mm as earth lead by means of galvanized bolts, nuts check nuts and washers and necessary excavation and earth work PCC 1:2:4 type B-1 using 20mm graded brick aggregate for earth pit RCC cover , charcoal & common salt filled in alternate layers funnel with 20mm bore light grade watering pipe, 40mm dia GI pipe light grade for protection of GI strip, wire mesh and connected to earth point including testing on all as specified

Supply & fix in replacement of RO membraine suitable for 2.0 Cum/Hr capacity, Spiral type, MOC - Celluluse Polyamide, filteration grade - 90-98% salt rejection, Make/Model : Toray Japan/8040 including connected accessories complete all as specified.

Supply & fix in replacement of Micron cartridge filter 1.4" dia & 20" long suitable for RO plant of capacity 2.0 Cum/hr as per existing make complete all as specified.

Supply & fix in replacement of Dual Media Filter assembly vessel, Type - Down Flow, MOC - FRP, with media - Sand, Silex, Pebbles & Gravel and including Multi Port valve suitable for RO plant of capacity of 2000 Ltrs/Hour of existing make and size complete all as specified and directed

M/S B T ENGINEERS

Dixit Enterprises

M/s Pramod Gupta