Augmentation and improvement of LWSS Dabhota in Tehsil Nalagarh Distt Solan HP

Amount

Excavation in drain and channels etc. in earth work for pipes upto all depths in all classification of earthwork such as pick work, jumper work, saturated soil including bailing and pumping out water, blasting soft/hard rock or chiseling soft/hard rock where blasting is prohibited in all lifts including jungle clearance wherever required, trimming & dressing of sides, leveling of beds to correct grade including shoring/strutting, planking , timbering & dewatering wherever required stacking the useable/Unuseable material/soil separately & after laying, jointing & testing of pipes, returning the useable soil in trenches in 15cm layers including consolidating of such deposited layer by ramming & watering & then disposing of all surplus excavated soil/ unuseable material as directed with in all leads & lifts including restoration of un-metalled surfaces to its original condition & including cost of diversion for traffic, right signals, fixing caution boards, crossing over trenches for access to houses, fencing etc. complete in all respect with in all leads and lifts and as per direction of the Engineer-in-charge.

Laying, jointing testing & commissioning at site in trenches following plain ended GMS pipes of following diameter of Heavy/Medium grade for Rising main as under confirming to BIS 1239-(Part-I) latest with up to date amendments, capable of withstanding required test pressure as prescribed in BIS code in random lengths of 5.5 to 6.5 meters. The pipes ends shall be beveled suitable for butt welded joint including the cost of jointing with butt welding confirming to IS- 816-1969 or latest as applicable (leak proof) in two layers at site of work with welding rods of standard make and all allied accessories whatever required for welding at site, tail pieces, tees & bends manufactured from parent pipes etc and cuttings of pipes wherever required etc. as per site requirement i/c carriage in all respect with in all leads & lifts and as directed by Engineer-in-charge. (Earth work shall be measured and paid for separately)There shall be only 1% flanged joints & all other joints shall be butt welded; flanged joints shall be measured and paid for separately.

Nominal Dia Thicknes Class

100 mm diameter, 5.40 Thick (Heavy), from RD 0 to 540

100 mm diameter, 5.40 Thick (Mediu,m), from RD 540 to 1260

Providing and fixing M.S plate flanges of following dia to GMS heavy /medium tubes, confirming to IS 6392- 1971 of following table,dia and welding with GMS pipe including cost of nuts , bolts washers complete as per IS 1963 specifications including packing sheet 3mm thick minimum and painting with anticorresive paints complete in all leads lifts and carriage of materials at site as directed by Engineer-in-charge.

100 mm - Table -17

100 mm - Table -5

CONSTRUCTION OF Anchor block / Thrust bolck

Excavation in foundation trenches etc. in earth work in all kind of soil such as pick work,jumper work, blasting work in hard & soft rock and chiesaling work including slushy soil & under flooring water up to all excavated soil up to any lead & lifts from the edge of excavation and then depth and stacking the returning the stacked soil in 15 CM ( fifteen centimetres) layer's when required in to plinth sides of foundation etc. Consolidation each diposited layer by ramming & watering & then disposing of all surplus excavated earth as directed with in all lead of 20 meters in Chiselling /wedging out of rock complete in all respect.

Providing and laying cement concrete 1:3:6(I cement:3 sand:6 graded stone aggregate 40mm nominal size) and curing complete excluding the cost of form work in foundation and plinth including carriage of material in all leads & lifts.

Providing form work with steel plates 3.15mm thick welded with angle iron in frame 30x30x5mm so as to give a fair finish including centring,shuttering,struting and propping etc with wooden battens and ballies, height of propping and centring below supporting floor to ceiling not exceeding 4 mtrs. and removal of the same for insitu,reinforced concrete and plain concrete and plain concrete work in :-

Vertical surfaces such as wall(Any thickness) partitions and the like i/c attached pillasters, buttresses,plinth and string courses and the like including carriage of material in all leads & lifts.

Providing and laying cement concrete work of design Mix M20 but not leaner than c.c 1:2.4 (Icement: 2sand :4graded stone aggregate 20 mm nominalsize)and curing complete excluding the cost of form work and cement and reinforcement for reinforced concrete work in suspended floor roofs, landing and shelves and their support balconies, beam girderes bressumers and cantiliver upto floor two level including carriage of material in all leads & lifts.

Providing and Placing of Tor steel reinforcement for RCC work i/c bending,binding and placing in possition complete including bending wire upto floor all level including carriage of material in all leads & lifts

i).( SUPPLY & ERRECTION OF SUBMERSIBLE PUMPING MACHINARY WITH ALLIED ACCESSORIES FOR TUBEWELL AT Dhabhota .Supply, erection, testing & commissioning of submersible pumping set of reputed make such as KSB/Calama/BS/Johnston, Amrut/ Sabar/Oswal/ Worthington/Kirloskar conforming to latest relevent BIS code IS 8034. The pump should be fitted with free flow impellers of bronze /suitable alloy as per BIS 5659 or latest with up to date ammendments suitable for raw/clear water having Charcterstics as mentioned in Item 5.12 to 5.15 having a greased packed bearings & shall with wound stator on motor side & with shaft protection sleeve on pump side ensuring better life for shaft conforming to BIS specifications. The pump shall be directly coupled to a submersible squirrel cage energy effecient electric induction motor or minimum energy effeciency level IE-2 Kirloskar/NGEF/Jyoti / Crompton or required HP & 2900/1450 RPM make conforming to relevent BIS 9283-1979 code with up to date ammendments totally dust & water proof for submersible duty isolated from the pump by intermediate casing with double mechanical seal in oil chamber chamber & grease packed lubricated bearings & provided with stainless steel thrust bearing plate to withstand non vertical loads with minimum wear & tear. It should also be fitted with a device to take up expansion of water with the heating of motor. The pump set should include water level guard, errection clamps, cable clips & depth gauge etc. & suitable for operation on data given below:-

a). Total Head in mtrs (i/c depth of Column Pipe in case of t/well) :- 135.00 Metre

b). Capacity (in LPS) of each pump set : 8.09 LPS.

c). Dia of R/Main (in mm) : 100 mm.

d).Length of R/Main ( in Mtrs) : 1260.00 mtr.

e).Dia of Column pipe (in mm) : 80 mm.

f).Length of Column pipe ( in Mtrs) : 58.70 mtrs.

A). SITE CONDITIONS:-

i). Location of Site :- 31° 05' 40.3" N 76° 38' 40.1" E

ii) The altitude of place in which the motor is intended to work :- 302 mtrs.

iii) Humidity :- Wheather generally remains humid during monsoon season.

iv). Nature of atmosphere :- As normally encountered in Shivalik Ranges.

v). Detail of quality of water :- Clear cold water

vi).Water free from sand or not :- Yes.

vii). Water corosive or not :- Not.

viii).Turbidity :- 50 PPM.

ix). Type of well :- Tubewell.

x). Inside Dia of Well :- -------------

xi). Depth of water during HFL in the pond :- -------------

xii). Max. draw down :- .00 mtrs.

xiii). Depth of T/well well :- 150.00 mtrs.

xiv). Any other information or requirement :- ----

B). OPERATING CONDITIONS :-

i). Type of current :- AC three/single phase

ii). Operating frequency :- 50HZ.

iii). Rated voltage :- 400 (+/-) 10% volts

iv). System of earthing if any to to be

adopted :- Double loop earthing as per BIS 3043-1987 latest with upto date ammendments.

v). Speed of revolution :-To be quoted by tenderer.

vi). Direction of rotation :- To be quoted by tenderer.

vii). No. of working hours per day :- 8 hours.

viii).The max. Temp. of cooling air & water in the place in which the

pumpset is intented to work in ordinary service :- (Generally warm).

C). MOTOR:-

i)Ref to BIS code :- BIS 9283-1979 or latest with upto date ammendments.

ii). Type of enclosure of motor :- As per BIS 4691-1985 or latest with up to date ammendments

iii). Type of duty :- "S1" i.e. Continuous duty type as per IS-12824-1989 or latest with up to date ammendments.

iv).Mechanical out put in KW :- Suitable for driving submersible pumps required for duties specified against pumps. To avoid overloading of motor a margin of about 15-20% may be kept in the rated out put of prime mover.

v). Class of insulation :- Class ~B~ .

vi).Max.permissible temp. rise of motor reqd. if different from that given in B (viii) above :- To be specified by the tenderer.

vii). Particulars of test reqd. & where they are to be conducted:- As per terms & conditions attached.

viii). Particulars as to whether voltage limiting device will be employed:- Star Delta starter, oil immersed,fully automatic to be installed between bus bar & motor. Shunt capacitor is also proposed to be installed for improving the power factor at site.

(NOTE:- Star delta starter upto 37.5 KW & ATS for 37.5 KW & above)

ix). Type of motor :- As per BIS 9283-1979 or latest with upto date ammendments. Electric Induction Squarrelcase,energy efficient motor.

x). Details of shaft extension reqd :- To work with the pump offered satisfacterly.

xi). Breakway torque in terms of rated load torque & the corresponding breakway starting current which may be taken from the supply with the starting apparatus in circuit :- Breakway torque to be given by the tenderer but the starting current should not exceed 2.5 times of the full load current.

xii). Nature of load & any information regarding the driven machine which has a bearing upon the torque reqd. during the accelerated period, the kinetic energy of the moving parts to be accelrated & No.of starts during a specified period:- To work with the pump offered satisfacterly.

xiii) Where possible fault capacity of the system to which the motor is connected :- The motor should be able to withstand initial current of 2.5 times the rated current for two minutes without suffering damages or permanent deformations .

D). PUMPS:-

i) Nos of pumps required :- 2 No. Pump.

ii). Spare parts required :- For two years normal maintenance as recommended by manufacturer.

iii). Type of drive :- Electric induction motor. of minimum energy effeciency level of IE-2

iv). Optional fittings required :- --------

PUMP OPERATING CONDITIONS:-

i). Capacity of pump (in lps) :- 8.09 LPS.

ii). Total head (in Mts.) :- 135.00 Mtrs.

If total head is not known then following details be provided:-

a) Static head (in mtrs):-

b) Minimum depth of water (in mtrs) :-

c) Seasonal Variation in water level (in mtrs):-

d) Ground level to max. water level (in mtrs) :-

e) Ground level to delivery point (in mtrs):-

f) Pressure in the suction tank (in kg/cm^2)-

g) Pressure in the delivery tank (in kg/cm^2) :-

iii). Length of R/Main (in mtrs):- 1260.00 mtrs.

iv). Dia of R/Main (in mm):- 100 mm.

v). Length of Column pipe (in mtrs) :- 58.70 mtrs.

vi). Dia of Column pipe (in mm) :- 80 mm

vii). Turbidity of water (in ppm) :- 50PPM

viii). Drive type :- Electric driven.

ix). Limits of total head in which the pump is reqd. to operate :- (-) 15% to (+) 10% of total head.

x) Suction/delivery size of pump :- To be specified by the tenderer.

xi). Efficiency of pump at :- To be specified by the tenderer.

a) duty head of as mentioned in in item No.5.01 :- 135.00 mtrs.

b) (+) 10 % head of as mentioned in in item No.5.01 :- 148.50 mtrs.

c) (-) 15 % head of as mentioned in in item No.5.01 :- 114.75 mtrs.

xii). Material of construction :- To be specified by the tenderer (manufacturers certficate to be appended)

Supplying and installation of suitable direct on line/oil immersed star delta/ATS/stator rotor starter of standard make such as MEI/Kilburn/Jyoti/ Siemens/Larson & Tubro conforming to BIS-8544-1979 latest with up to date ammendments for squirrel cage/slip-ring motor (make to be specified by the tenderers) mounted on panel board with magnetic type over load release & dashpot,time lag,under voltage release with initial oil filling .

Note:- Star - delta - starter upto 37.5 KW , ATS between 37.5 KW to 50 KW and stater rotor starter with slipring motor beyond 50 KW.

Providing M.S. sheet 16 SWG steel fabricated floor mounted closed almirah type switch board including angle iron post of suitable height and size ISA 40x40x6mm duly painted comprising and capable of mounting including cost of providing and fixing in position the following accessories with all internal electric connections. The drawing of panel board shall be subject to approval of Engineer in charge.

c). ICTP switches with HRC fuses of Kilburn/Larsen & Tubro/Standard/Siemen/Havells make and having capacity 30% extra of the operational rating of motor as per BIS 4064-1978 with upto date ammendments immediatly after the power meter of HPSEB.

d).Busbar chamber having three copper bars of suitable rating for full length equal to width of board of three live phases and one copper bar of half rating of full length for neutral conforming to BIS 8084-1976 and 11353-1985 read with 5578-1985 all latest with upto date ammendments.

e).ACB/MCB/Oil circuit breaker of suitable capacity of Kilburn/L &T/MEI/GEC/Standard make on incomming feeder for motors offered by the tenderer conforming to BIS 2516-1985 latest with upto date ammendments with initial oil filling whenever required & neutral linked under voltage release.

f).Three phase indicating lamps complete with toggle switches for individual motors conforming to BIS 3452 part I & II latest with up to date ammendments.

g) Earth leakage circuit breaker/relay of recommended make such as Kilburn/L&T/MET/GEC conforming to BIS-2516-1977 with upto date ammendments and of suitaible range which should have control box, oprating handel and trip/reset push button, on/ off indicators, re-indicating off spring condition of the circut breaker for over current protection. The circuit should be equipped with magnet thermal release with metallic tap CTS. It should also be fitted earth fault for tripping of breaker on occurance of earth fault on/ of breaker load side.

h).Hour run meter of reputed make of four digit capacity conforming to BIS-722 (latest edition)/recommendations.

i).Suitable three phase voltage monitor relay with all protections & usual indicators with electric sirens against single phasing, low voltage, high voltage & overloading & phase voltage difference as per IS-3842 with up to date ammendments.

k).Single phase preventor of reputed make & suitable capacity conforming to IS:1248 (P-V)-1983 with up to date ammendments

a). Providing and fixing at site of Kirloskar/ Leader/KSB make of suitable dia cast steel double flanged sluice valve having size one size larger than the nominal dia of delivery of the pump or equal to dia of column pipe ( in case of Tube well) and capable of withstanding nominal seat pressure as mentioned in item No. 5.01 (a) + surge pressure conforming to BIS/API standared with up to date ammendments for delivery line of pump. The class of Valve shall be ASA 300 (PN50)

(NOTE:- The sluice valve shall conform to BIS 780-1984 latest with up to date ammendments However, if the seat pressure exceeds the limits prescribed in BIS 780 then the sluice valves shall be of cast steel conforming to class 150 ASA (Seat pressure 21 Kg/cm^2) or class 300 ASA (seat pressure 52 Kg/cm^2) as per BS 1414 (API 600).

b).Providing and fixing at site of Kirloskar/Leader/KSB make of suitable size cast steel double flanged swing check type reflux valve having bye pass arrangement & size one size larger than the nominal dia of delivery size of pump or equal to dia of column pipe (in case of tube well) and capable of withstanding nominal seat pressure as mentioned in item No.5.01 (a) + surge pressure conforming to BIS/API standard with up to date ammendments for delivery line of pump .The class of Valve shall be ASA 300 (PN50)

NOTE:- The reflux valve shall conform to BIS 5312-1984 (part I) latest with up to date ammendments. However if the seat pressure exceeds the limits prescribed in BIS 5312 then the reflux valves shall be of cast steel conforming to class 150 ASA (Seat pressure 21 Kg/cm^2) or class 300ASA (seat pressure 52 Kg/cm^2) as per BS-1414 (API600) .

a).Providing,laying,jointing & testing at site suitable size copper PVC insulated armoured power three & half core cable ( form meter of HPSEBL TO CIRCUIT BREAKER) conforming to BIS 1554 (Part I) -1988 or latest with up to date ammendments of Siemen/Gloster/ICC/ EICO/National /IEC make from meter of HPSEB to circuite breaker & from circuite breaker to bus bar switch & starter (one cable carrying all three phases) including all other electrical equipment/accessories such as thimbles,flexible pipe,solder, nuts & bolts,cable glands etc. laid in pipes or trenches under floor The type,size & make will be subject to approval of HPSEB authorities. In case of non acceptance by HPSEB authorities it shall have to be replaced by the tenderer free of cost. (30 Rmt.) 16mm2

b).Providing,laying,jointing & testing at site PVC jointless flat water proof cable ( for Motor Side ) as per BIS 694-1990 (latest with up to date ammendments) suitable for the pump sets offered from circuite breaker to motor & motor to starter including all other electrical equipments such as thimbles, flexible pipes, solder,nuts & bolts,cable glands etc. laid in pipes or trenches. The type,size & make will be subject to approval of HPSEB authorities.In case of non acceptance by HPSEB authorities it shall have to be replaced by the tenderer free of cost. (2x50 +10=110 m) 10mm2

c) Providing and laying double loop earthing with Copper/G.I plate 600x600x3mm thick electrode complete with material such as charcoal, common salt ,GI pipes,thimbles,nuts & bolts,digging of pits,GI wiring & 25x5mm copper strips of required capacity conforming to BIS 3043-1987 latest with up to date ammendments suitable for above motors & other electrical equipments.

d).Supply & errection of floor/wall mounted power factor shunt capacitor conforming to BIS 2834-1986 or latest with upto date ammendments of BHEL/GEC/Machneil/ Mager/Bajaj/L&T make to raise the prevailing power factor at site to 0.95 for direct connection to induction motor individually,of required KVAR according to HP of motor offered including cable Siemens/Gloster/ICC make from busbar chamber to capacitor & also including L&T//Kilburn/ Standard/ Siemen/Havells make ICTP switches conforming to BIS 4064-1978 or latest with HRC fuses (Range to be specified by the tenderer).(09 KVAR Capacity)

Supplying and fixing of 100mm dia circular dial pressure gauge of suitable range & standard make such as Fiebeg/Bourden/ Precision/PREGA with all accessories such as stop cock,copper tubing etc.conforming to BIS 3624-1987 or latest with up to date ammendments.

Providing and lowering in position at site of GMS( MG) column pipe assembly of size as indicated in item 5.05 including MS Flanges of table - 17 capable to withstanding nominal pressure as mentioned in item no.5.01 & confirming to IS 6392-1971 with up to date ammendments including the cost of rubber /asbestos gasket of maximum 3 mm thickness as per IS: 2712 -1979 and required numbers of nuts and bolts as per IS 1364 -1983.The column pipe should be provided & lowered as per the direction of engineer incharge. The same shall be of suitable thickness, grade & specification capable of withstanding minimum1.5 times the total presure as indicated in item no. 5.01 (a) unless otherwise specified properly jointed at every three mtrs including all neccessary accessories like increaser/ reducer , flanges ,tees, bends etc.including supporting clamps ( 2 Nos ) at the top of assembly and i/c cost of jounting of column pipe with R/Main with additional length of delivery pipe of approximately 10mtr as per the direction of engineer-in charge (58.70+10=68.70)

HANS RAJ CONTARCTOR

SHYAM LAL