8420 MAINTENANCE OF WATER SUPPLY INSTALLATIONS AND REPAIR/REPLACEMENT OF WATER SUPPLY PIPE LINE AND CONNECTED ITEMS AT KATTABOMMAN AND RS(P) UNDER GE TIRUNELVELI

Amount

Excavation in trenches for laying of GI water tubing etc., getting out in soft/loose soil n.exc 1.5m wide and n.exc 1.5m depth complete all as specified and directed.

Returning, filling in trenches including spreading, leveling, watering and in layers n.exc 25cms thick without damaging pipes/special fittings as in any type of soil complete all as specified and directed.

Removing excavated materials to a distance n.exc 50m and depositing where directed at a level n.exc 1.5m above the starting point complete all as specified and directed.

Taking down the defective centrifugal pump and motor of any make 415 volt 3 phase by dismantling the electrical connections, removing the motor from bed by decoupling with pump transporting to workshop, dismantling it completely, removing the burnt out winding, rewinding the same with super enameled copper wire of same back to site and with and transporting with the pump necessary insulating material, varnishing, backing and re-assembling the motor completely with all connections complete all as specified and directed for following capacity. Note : (i) Burnt out removed winding wire shall be property of contractor through schedule of credit.

Electric motor 20 HP

Electric motor 12.5 HP

Electric motor 7.5 HP

Electric motor 5 HP

Electric motor 3 HP

Servicing/overhauling of centrifugal pump set by dismantling completely and replacing unserviceable ball bearing, shaft sleeve, gland neck ring gland rope, nut and bolts etc. assembling back the complete pump and fixing alignment to the original position and coupling with pump and necessary alignment etc and painting with two coats enameled paint including scraping complete and written MES/SM, testing and commissioning complete all as specified and directed Note: (i) Spares and petty items replaced shall be deemed to be included in the quoted rate. (ii) Painting and writing the MES number with existing size deemed to be included in the rate quoted. (a) Maintenance schedule :- (i) Checking for looseness of all the foundation and coupling nuts/bolts and rectification. (ii) Checking for proper functioning of all the voltmeter, Ammeter, starter, contactor etc and rectification. (iii) Checking for proper functioning of suction and discharge pressure gauges and rectification. (iv) Checking of leakage in gland packing, shifting base, bushes sluice valves, gate valves etc and rectification. (v) Checking for any undue noise of motor pump and rectification. (vi) Checking for proper alignment and rectification. (vii) Checking for proper lubrication in bearing and lubricating. (viii) Checking all electrical panel using for pumping for cleanliness and rectification for any looseness burnt redressing etc.

Material and labour for taking up submersible pump set 16/17.5 HP from shallow well, 3-phase 415v,50Hz, AC, opening the motor, cutting and removing the burnt windings, cleaning the stator and rotor with cleaning agent. rewinding the motor with appropriate gauge of super enameled copper wire of approved make insulating the winding with same class of insulation and repair to pump including shaft and impellers complete all as specified and directed .

Material and labour for Painting to water supply pipe line of 150mm bore from sump to pump and on OH tank including preparation of surface by scraping, dust cleaning with brush and applying two coat of synthetic enamel paint of standard colour and forming the arrow showing direction of water flow complete all as specified and directed.

Supply and laying in trenches steel water tubing galvanised medium grade and connecting including fitting like Tee, Bend, Socket, Elbow, Short pieces connectors, plugs, and unions etc, cutting threading and taking down old existing unserviceable pipe of the following sizes all as specified and directed.

a) 100 mm dia

b) 80 mm dia

c) 50 mm dia

d) 25 mm dia

Material and labour for cast iron pipe spigot and socketed pipes centrifugally cast class LA in any length laid in trenches including taking down old unserviceable CI pipe complete all as specified and as directed.

80 mm dia

100 mm dia

150 mm dia

200 mm dia

250 mm dia

Repair/Replacement of PVC pipe line after checking and arresting of leakage including excavation at both ends, testing of leakage after rectifying , complete for the following size of pipes all as specified and directed.

a) 25 mm dia

b) 50 mm dia

c) 80 mm dia

d) 100 mm dia

Repair of CI pipe line including excavation for taking out Joint, burning out/ removing lead joint and refixing pipe/ fitting in original position realignment to existing CI collars at both ends, testing of leakage complete of the following size of pipe complete all as specified and directed. NOTE: (i) Cast iron pipe shall be measured and paid separately under relevant items. (ii) Cost of excavation and required CI fittings required for job will deemed to be included in the quoted unit rate.

a) 80 mm dia

b) 100 mm dia

c) 150 mm dia

d) 200 mm dia

d) 250 mm dia

Material and labour for construction of block masonry valve pit complete with PCC 1:3:6 type C1 solid block walling 20cm thick set in CM (1:4) over 100 mm thick PCC 1:4:8 type D2 foundation, 50 mm thick PCC 1:2:4 type B1 coping on the top of wall, rendering 15 mm thick with CM 1:4 on inside and exposed external surfaces up to 150mm below GL, 3 mm thick MS sheet cover, angle iron frame and locking arrangement etc., including dismantling old existing damaged valve pit complete of following sizes all as specified and directed:-

a) 0.75m x 0.75m x 0.75m

b) 1.2m x 1.2m x 1.0m

Supply and fix gun metal gate valve (ISI) marked with iron wheel head screwed both ends for iron pipe suitable for following bore of pipe including taking down old existing gate valve complete all as specified and directed.

a) 50 mm bore pipe

b) 40 mm bore pipe

c) 25 mm bore pipe

d) 20 mm bore pipe

Taking down old defective foot valve and supply and fix new CI foot valve heavy duty with confirming IS-4038 of following sizes complete all as specified and directed:-

a) 80mm dia

b) 150mm dia

Taking down old defective non return valve supply and fix non return valve with by pass arrangement working pressure 10 kg per sq cm confirming to IS- 5312 including jointing by means of rubber gasket 3mm thick, MS nut bolt, washers etc., including testing for following sizes:-

a) 150mm dia

b) 100mm dia

Supply and fixing in repairs of the following DOL / star delta starter 3 phase suitable for 5 to 10 HP motor complete all specified and as directed.

Material and labour for repair/check starter, replacement of unserviceable spare parts i.e. contactor, relay, timer, phase preventer ,rewiring etc, for fully automatic star delta starters for AC 415v, 50Hz, 3-phase suitable for 15 to 25HP capacity electric motor complete all as specified and directed.

Taking down old unserviceable sluice valves and supply and fix new Sluice valve CI body double flanged and drilled conforming to IS-780 of 1980 PN-1.6 including rubber gasket 3 mm thick, stainless steel spindle, iron wheel head and suitable size of nuts bolts and washers complete all as specified for the following sizes.

200 mm dia

150 mm dia

100 mm dia

80 mm dia

Repairs to CI sluice valves by taking down worn out unserviceable gland sleeve, check nut spindle, gate etc., and cleaning the valve by removing all scales and reassembling the valve with new packing, nut and bolts complete all as specified and directed for the following sizes:-

200mm dia.

150mm dia.

100mm dia.

80mm dia.

Material and labour for Calcium hypochlorite (consisting of 65 - 70% by mass of available chlorine ) calcium based granular disinfectant for water treatment packed in 45 Kg drums complete all specified and as directed. Note: The specifications of the product should be as per Particular specifications forming part of the tender.

Material and labour for attending breakdown complaints like no water supply in service tank, pipe line leakages etc and also removing air lock in married / OTM accommodation with help of required tools and man power with items like GI fittings of any size/dia, union, elbow, tee, bend, nipple, socket etc including excavation upto 1.0 cum if required for rectification of leakage of GI pipe complete all as specified and directed. Note:- (i) Rate of union, elbow, nipple ,coupler, bend socket shall be included in the unit quoted rate. (ii) Rate of excavation upto 1 cum shall be included in the unit quoted rate.

Monthly Bacteriological water testing including both supply and end user level with sample collected by contractor, testing done at authorized/ Govt laboratory and report to be submitted to GE in triplicate complete all as specified and directed by engineer-in-Charge.

Material and labour for taking out material from existing filtration plant and sieving for different sizes for reuse including refilling sieved material with new filter media element complete all as specified by OEM and directed by Engineer-in-Charge. Note: (i) New filter element will be paid separately in appropriate items. (ii) Rate for required T&P shall deemed to be included in the quoted unit rate. (iii) Testing of water after change of filtration media element to be submit to this office from any authorized/ govt laboratory.

Supply only Activated Carbon (IV 450)

Supply only 1 x 3/4 Pebbles

Supply only 3/4 x 1/2 Pebbles

Supply only Coarse Silex

Supply only Fine Silex

Supply only Fine filtering Sand

Supply and Fix PVC Insulated and PVC 3 core Sheathed Multi Core Bright Annealed Bare Copper Conductor Heavy Duty Industrial Flexible Cables for Voltage Grade 1100 Volts, 6 Sqmm suitable for 15 to 20 HP submersible motor complete all as specified and directed by engineer-in-Charge.

AnnaiEnterprises (BID ID -3221745)

SIVA MARUTHI ENTERPRISES (BID ID -3224876)

VVM CONSTRUCTIONS (BID ID -3224356)