Annual Rate Contract (2025-26) for Operation and Maintenance

Schedule A, B,C

Technical Specifications

For Operation and maintenance works

DETAILEDSPECIFICATIONSFORMAINTENANCEOFWATERPIPELINEWORK

ItemNo.1: Excavation:

Excavation in all types of soils, soft and hard soil up to 1.5 m depth and from 1.5 m to 3 m

depth (keeping the clear cover of soil on the top of the pipe 1.0 m)

Line out along the alignment of the pipe using lime getting it approved from Dy. Executive

Engineer (WW), breaking the surface and excavating up to the required depth. Thecontractor

shall provide at his own cost, red light and a watchman during the night hours,and provide

fencing using ropes on both the edges of the trench before starting of work. The contractor

shall keep a sign board with “Road Closed – Work in Progress” written on it.

Along the alignment of pipe, the excavated material shall be kept 1.0 mtr. away from the

trench and protecting the excavated material till the work is complete.

Excavation will be allowed to be carried out up to maximum 100 m length at a time. Further

excavation shall be permitted only after laying of the pipe line is complete in the excavated

The work shall be executed in such a way that the water connections, drainage connection,

telephone, electric cables, gas line / water line / chamber / manhole etc. met during

excavation are not damaged. If required, these cables and poles shall be supported properly,

even then these lines and cables are damaged, and the contractor shall be held responsible.

In case of damage to the water and drainage lines, electric poles etc. during the excavation

the contractor shall repair the same at his own cost immediately. In case such repair work is

not attend immediately, it will be executed through other agency or department at the risk

and cost of contractor and the entire repair expenditure shall be deducted from his running

bill or from the amount payable to him.

Any diversion required in existing service lines / house connections coming in the line of

work shall have to be diverted by the contractor at his cost & risk, as per the instructions and

directions of Engineer-in-charge.

Excavation shall be carried out in all types of soil, dry, moist or water logged. If required the

contractor shall procure his own pump and carry out the de-watering. The places where the

soil is soft or made-up (refilled) the contractor shall provide wooden planks and supporting

structure to the trench, to avoid any mishap or accident.

The excavated stuff shall be dumped at about 1 m away from the trench (within 90-meter

lead),properlyinthelineandapproachshallbeprovidedacrossthetrenchatasuitable

interval for the public to cross over. The contractor’s rate shall include breaking brickwork,

concrete etc. No extra rate shall be payable for this work.

Therateshallbepercubic meter.

ItemNo.2:ExcavationbyJCBmachine:

Excavation for pipe line trenches in all sorts of soil and soft murrum/tar road etc.including all

safetyprovisionsusingsite rails and stackingexcavated stuff up to a lead of90 M cleaning the

site etc. complete as pet the instruction of engineer-in-charge for lifts and strata as specified

with the help of hiring JCB machine.

Therateshallbeonhoursbasis.

ItemNo.3:Lowering,LayingandjointingofvalvesSV/AV/BFV/RV:

Thevalveshallbefixedwithpipelineaspertheinstructionofengineer-in-charge.

The valve and the tail pieces will be jointed using rubber packing, nuts, bolts, washers etc.

after properly cleaning the tail pieces & the flanges of valve. The valve shall be lowered using

the chain pulley block and fixed keeping vertical axis perfectly vertical and placed on cement

concrete block at bottom for proper leveling. The contractor shall be responsible for

protecting the valve, tail piece etc.The contractor will be responsible for protecting thesluice

valve spindle, cap till the pipe line is handed over to the corporation.

Therateshallbepaidper Number.

ItemNo.4:Lowering,Laying,Jointing&TestingofPVC/UPVC Pipes& Specials:

1.LayingofPipes

LayingofpipeshallbedoneasperIS7634-3 (2003).

Lay the pipes in the trench after ensuring that bell holes have been provided for at the

appropriate places in the bedding (pipes of diameter 110 mm or less, with no live load

application, do not require bell holes in the trench bottom). These have to be refilledcarefully

after testing of the pipeline and prior 10 complete backfilling of the trench. Though not

essential, the pipes should be laid with the spigots entered into the sockets in the same

direction as the intended flow of water.

2 Cutting of Pipes – Pipes are supplied with square-cut and de-burned ends. However,

if pipes need to be cut to smaller lengths, use fine-toothed hand saw and a mitre box or a

power saw with wood-working blades, with a Suitable guide. The cutting must not raise a

burrorridgeonthecutendofthepipe.Failuretoremovetheridgewillresultincementin

the fittingorsocketbeingscrapedawayfrom the jointingsurfaces, leadingto a dryjoint with

probability of join; failure, Remove-all bums ‘and ridges with a deburring knife, file, or

3 EndPreparationofCutPipesforJointing-

Theburrleftaftercuttingshouldbetrimmedoffbylightgrindingorby filling.

4 Wrapping -When PVC pipes are to be laid in aggressive soils the pipes should be

wrapped externally with protective coatings, such as bitumen or coal tar sheathing, or in

certain bends and valves, precautions should be taken to provide sufficient overlap of the

wrapping sleeve so that no pipeline is exposed to the aggressive soil.

5 Pipeline Anchorage - All pipelines having unanchored flexible joints require

anchorage at changes of direction and at dead ends to resist the static thrusts developed by

internal pressure. Dynamic thrusts caused bogy flowing water act in the same direction as

flowing water act in is of sufficient magnitude at high velocities of the surrounding soil.

Anchorages to resist the thrust should be designed taking into account the maximum

pressure the main is to carry, in service or on test, and the safe bearing pressure of the

surrounding soil.

Where possible, concrete anchorblocks should be ofsuch a shape as to allowsufficient space

for the remaking of the joints.

Pipeline should be securely anchored at dead ends, tees, bends, tapers and salver to resist

thrust arising from internal pressure anchors and thrust blocks should be deigned in

accordance with IS: 5330-1984.

6 Transportation,HandlingandInspection

When transporting pipes, flat bed vehicles should be used. The bed should be free from nails

and other projections. When practical, pipes should rest uniformly on the vehicle over the

whole length. The vehicles should have side supports approximately 2 m apart and the pipes

should be secured effectively during transport. All posts should be flat with no sharp edges.

When loading spigot and socket pipes, the pipes should be stacked on the

vehiclesothatthesocketsdonottakeexcessiveloads. Wherepipesoverhangthevehicle, the

amount of overhang should not exceed 1m.

High stiffness pipes should be -placed at the bottom of the load and low stiffness pipes at the

top. Care should be taken to avoid positioning the pipes near to any exhaust systems or any

other potential hazards such as diesel oil, paints or solvents. Pipes should be inspected prior

to off-loading. When pipes are transported in bundles, the bundles should be secured

effectively and off-loaded.

PVC/UPVC pipes should be handled keeping in mind that they are made of plastic and are

also susceptible to damage if mishandled. They should not be thrown, dropped or dragged.

Single pipe of up to 250 mm can be lifted by two men without difficulty. Mechanical lifting

equipment used for lifting pipes and pipe bundles should not damage the pipe. Fork- lift forks

should be flat and protected. Cranes should have spreader bars. No wire ropes, chains or

hooks should be used. Slings should be made of rope or webbing 7 to 10 cm wide.

If pipes have been telescoped for transporting, the inner pipes should be removed first and

stacked separately.

Resistance to impact is reduced in cold weather. Extra care needs to be taken attemperatures

around O˚C. At temperatures below –15˚C, special instructions from the manufacturer should

Therateshallbepaidperrunning meter.

ItemNo.5:Removing,Shifting&placingofsluice valve:

The existing sluice valve on the line shall be removed by cutting the pipe by appropriate

method.After removing the valve shall be fixed on line on line at another place as directed by

Engineer-in-charge. This item includes cutting the pipe, dewatering, loading, unloading etc.

Therateshallbepernumberbasis.

ItemNo.6:CuttingofPVC pipes:

The contractor shall bring required tools at site of work for cutting the existing pipeline. The

pipe shall be cut as perinstructions of the engineer-in-charge. The pipe should be cut in such

a way that it may not damage the existing pipe and develop extended crack in the pipe. The

materials, debris and waste obtained shall be deposited in stores of the corporation. For

dewatering from excavated pit, the contractor shall provide pumping equipment, machinery,

fuel, labour, temporary platform and proper disposal of water to nearby storm water drainor

drainage manhole as far as possible as per the instructions and requirement to the

satisfaction of engineer-in-charge.

Theratesshallbeperrunningmeter.

ItemNo.7:HiringofD.G.Set:

Hiring of D.G Set as per requirement of work must be done by contractor. D.G. set with

minimum requirements of 30 KVA with carting. FUEL-OIL LUBRICANT for D.G. Set also

acquired by contractor as per requirement.

Rateshallbepaidperday. (8 hours)

Item no.8: Installation Of Pressure Point:On PVC pipeline various diameter an checking

pressure as directed by engineer-in-charge

Mode of measurement:measurement On No Basis

Payment: Payment on Work done on nos basis.

Itemno.9:Dewatering:

Dewatering by pumping set of required capacity including temporary platform carting

pumping at site and fixing same in position including all accessories and fuel, labour, etc.

complete as per instruction by engineer in charge.

RateshallbepaidperHP/hour.

ItemNo.10:Backfilling:

Refilling the pipe line trenches incl. ramming, watering, consolidation, disposal of surplus

stuff as directed within radius of 3 km. After the pipe line is laid, jointed and tested and

proved to be water tight the trenches shall be refilled in the manner described below:

The first foot of filling material immediately above and around every pipe shall consist of

finest selected earth been protected in the manner described above. After the first foot of

material has been placed in position the remainder of the material is to be filled up to 9”

below surrounding ground level at a time and sufficient water i.e., min. 150 lit./m 3of

excavation shall be used and flooded the trench in addition to aid consolidation of filling

material.After this having been done, the trenches or the excavation shall be left for one day

to allow consolidation and on the next day it should be restored to its original condition and

opened to use. Contractors have to produce evidence for using water for consolidation.

After trenches having been filled to their original surface all surplus material shall be

removed by contractor. Some of the earth may be kept for use to restore and subsequent

settlements but it shall be stacked properly and protected at convenient points so as not to

cause any interference to traffic or nuisance to the public. Before the final bill is paid, the

contractor shall make good promptly at his expense any settlement that have occurred even

in the vicinity ofexcavation. He shallalsorepairand set right at his own expense anydamage

caused to property and such works shall be carried out to the full satisfaction in all respects

of the owner thereof.

Restorationof Surfaces

All berms and other paved surfaces shall be restored in as good condition as before

disturbance or the execution of work and any deficiency in the filling material resulting from

theft or any other case what so ever shall be made good by the contractor at his own cost.

Incaseofroadstheoperationmaybedoneinthetwoportionstofacilitatethetraffic. The

rate shall be per Cu. Meter.

ItemNo.11:DemolitionofRCCwork:

The demolition shall consist of demolition of one or more parts of the building as

specified or shown ad to drawings Demolition implies taking up or down or breaking up.This

shall consist of demolishing whole or part in work including all relevant items as specified or

shown in the drawings.

The demolition shall always be planned beforehand shall be done in reverse order to

the one in which the structure was constructed. This scheme shall be got approved form the

Engineer-in-charge before starting work. This however will not absolve the contractor from

the responsibility of proper and sate demotion.

Necessary propping, shoring and under pinning shall be provided for the safety of the

adjoining work. property, which is to be left intact, before dismantling and demolishing is

taken up and the work shall be carried in such a way that no damage is caused to the

adjoining property.

Whereverrequiredtemporaryenclosuresorpartitionsshallalsobeprovided

Necessaryprecautionshallbe taken to keep the dustnuisancedownas and where necessary.

Dismantling shall be commenced in a systematic manner All materials which arelikely

to be damage articles shall be properly stacked as directed.

AllmaterialsobtainedfromdemolitionshallbethepropertyofGovernmentunless

otherwisespecifiedshallbekeptinsafecustodyuntilhandedovertotheEngineer-in-charge.

Anyserviceablematerials,obtainedduringdismantlingondemolitionshallbe

separatedbutandstackedproperlyasdirectedwithallleadandlift.Allunserviceable

materials,rubbishetc.,shallbestackedasdirectedbytheEngineer-in-charge.

On completion of work, the site shall be cleared of all debris rubbish and cleaned as

Modeofmeasurementand payment.

The relevant specifications shall be followed except that the demolition of reinforced

concrete structure is to be done. The unserviceable materials shall be disposed of at all leads

and lifts. The rate excludes scraping straightening of reinforcement but includes cutting of

Therateshallbeforaunitofonecubicmeter.

ItemNo.12:Breakingexistingasphaltroad:

Before starting the work, the contractor shall provide proper traffic diversion

arrangement and place the board “Road Closed, “Work in Progress”, also provide red lighting

arrangementduringnighttime.Theplaceshallbecordonbyrope&verticalposttheroad

shall be cut to required width and depth through asphalt, metal, rubble and earthen

embankment to form a trench for the crossing of the road by main pipeline as directed by

Engineer–In–Charge.

a) Cuttingtheroadforformingatrenchasmentionedabove.

b) Storingexcavatedmaterialproperlysoasnottodisturbthepassing traffic.

c) Refillingoftrenchandconsolidationofrefilledmaterial.

TherateshallbeonSq.meter.basis.

Item No. 13: O & M by Providing Supervisors for control and supervision of engagedup-

keeping staff as directed & as per specification for above specified item No.1 to 11etc.

complete as directed:

A. ManpowerRequirement:

Supervisory staff engaged by the agency shallbe having minimum 5 years of experience

ino&m of water works and have Knowledge of Gujarati, Hindi & English language is essential.

Supervisorystaffengagedbytheagencyshallbepolite,pleasantpersonality&mustbe prompt in

delivery of services assigned to them.

Thispersonmustbepunctualintheirdutiesandpertainingworkdutiestheassignedto them

properly or not. He should take the attendance of all the staff engaged by the contractor shift

wise. If any lapse is found in any of them, he should report to the PMC. Shift wise attendance

register should be submitted to PMC for review. He should particularly watch the dutiesgiven

by PMC so that work is properly maintained. Supervisor shall maintain monthly attendance

C. MODEOFMEASUREMENT

The Payment shall be made on MONTH basis if the performance found unsatisfactorily then

proportionate deduction will be made from the bill of the agency.

Item No. 14:Providing necessary maintenance team comprising of following

lineman/valvemanasandwhenrequiredbythedepartmentfora minimum

6no.competeas directed:

A. Manpowerrequirement:

Providing Service of Labor by Engaging Labour to any type of water works on

the daily basis as per requirement for whole months as required and as

directed by the engineer in charge.

In case of an emergency, natural calamities or any condition, the Labour is supposed

to do the duty unconditionally. He can be deployed for any relevant type of water

Consumption of liquor or any addictive stuff is strictly prohibited during the duty

hours. He must have physically fit body & health without any illness.

He must have basic knowledge & fluency in speaking, reading & writing of Gujarati &

Hindi Language.

Foranykindoffailureindutyperformance,penaltyshallbeapplicable.

In any case / accident, the contractor will totally be responsible, no claim shall be

entertained by this office in any case.

This person must be punctual in their duties. He should do all types of O&M works assigned

to him by superiors. If any lapse is found in any of them, he should report to the Supervisor.

He should fill his attendance daily through the Supervise.

C. MODEOFMEASUREMENT:

The Payment shall be made on MONTH basis if the performance found unsatisfactorily then

proportionate deduction will be made from the bill of the agency.

ItemNo.1:PVC PIPES:

Providing and supplying in standard length ISI mark rigid unplasticized PVC pipes suitable

for potable water with ring fit joint including cost of rings, as per IS specification no.

4985/1988 including all local and central taxes, transportation, freight charges, octroi,

inspection charges, loading, unloading, conveyance to the departmental stores and including

costofjointingmaterialetc.complete.Note:1.Onecoupler/ ringshallbeprovidedwitheach full-

length pipe cost of which is included in rates below. 2. 3% (Three) Discounted rate to be

consider for Coupler jointed pipe 3. Rate for PVC Resin as Rs. 85081.24 (inclusive of GST @

18.00%, freight & Sales Tax) Dtd. 20-03-2019 including Manufacture, supply & delivery of

PVC specials suitable to PVC pipe.test pressure 6 kg / cm2

90mmdiato200mmdia U-

ForIndianmanufacturersavalidlicenseissuedbytheBureauofIndianStandardsformarking the PVC

pipes with ISI mark is a mandatory requirement both for PVC pipes & rings STANDARDS:

The UPVC Pipes to be manufactured, supplied and delivered under the scope of this contract

shall be manufactured in accordance and confirming to IS:4985-2000 or its latest revision or

amendmentsorotherauthoritativestandardthatensureatleastasubstantiallyequalquality to the

IS:4985-2000 or its latest revision or amendments

Elastomeric sealing ring shall be as per specification of IS – 5382-1985, and ISO: 4633-1996

or it shall be EPDM rubber ring.

The dimensions, material compositions, tests etc. shall be as per IS:4985-2000 or with its

latest revision or amendments.

TheminimumwallthicknessweightshallbeasperAppendixIofthe tender. The

color of pipes shall be as per IS 4985-2000

BureauofIndianSpecifications(BIS)/IndianStandard(IS)shallmeantheLatestversion issued by

Thematerialfromwhichthepipesaremadeshallconsistsubstantiallyofunplasticized

polyvinylchlorideconformingtoIS:10151,towhichmaybeaddedonlythoseadditivesthat

areabsolutelyneededtofacilitatethemanufactureofthepolymer,andtheproductionof sound,

durable pipes of good surface, finish, mechanical strength and opacity.

The bulk density of the UPVC compound shall be 0.50to 0.53 and the density of

UPVCpipeshall be 1.40 to 1.46 g / cm3.

Theadditionalofthemanufacturesownreworkmaterialshallcomplytoclause4.2ofIS:

PVCresinofsuspensiongradeK-66/K-67shallbeusedforextrusionofUPVCpipe.

InlinewithBIS4985-2000thetoleranceonoutsidediameterofthepipeshallbeasunder:

Nominal Min.outsidediameterinmm Outside diameter at any

outside point in mm

Minimum Maximum Minimum Maximum

“The pipes shall be transported to the store by flat floored trucks in pre packed woodencrate.

The height of crate should not be exceedingly more than 2 meters. The both ends of

packaging unit (crate) shall be covered with plastic sheet to ensure adequate protection

during transport. At the time of packing and stacking of pipes, the sockets shall be alternated

within the pipe of pipes and shall project sufficiently for the pipes to be correctly supported

along their whole length. The pipes shall rest uniformly on the vehicle bed over their whole

length during transport to avoid sagging or deformation.

The packing material like wooden crate, plastic sheet etc. shall be the properly of

tenderer and he is permitted to reuse the packing material for transporting next batch of

ThepressureratingofpipesshallbeinaccordancewithIS4985withamaximumcontinuousworkin

gpressureat270C.of6&10kg/cm2.Thisworkingpressureshallbedowngradedfor ambient

underground soil temperature of 450 C. as per the figure given in IS 4985 for design

The pipes when subjected to internal hydrostatic pressure in accordance with IS: 12235-

1986 (part – 8) shall not burst during the prescribed test duration. The temperature,duration

and test and induced internal stress shall conform to the parameters given below:

Sr. Test Temp. Min. Induced Requirements

( C) duration Stress

1 Typetest 60 1000 10 Nofailure

2 AcceptanceTest 27 1 36 Nofailure

The integral socket of the pipe shall be tested for internal hydrostaticpressure in accordance

with ISO: 3603 and ISO

The UPVC pipe shall not contain vinyl chloride monomer (VCM) exceeding 1 ppm when

determined bymeansofgas phase chromatographyusingthe“headspace” method according to

The wall of the socket and the wall of the plain pipe shall not transmit more than 0.2% of

visible light falling on them when tested in accordance with IS:12235 (part -3).

The pipes shall be supplied in straight length of 6 mtrs with tolerance of +20mm and -0mm.

The effective length of socket pipe shall be considered as shown in figure 2 of IS

All plastic and non-plastic material for components of the UPVC piping system e.g.,

Elastomeric sealing ring, lubricants, when in permanent or in temporary contact with water

which is intended for human consumption, shall not adversely affect the quality of the

drinking water.

Concentrations of chemicals, biological agents or other substance leached from pipematerials

in contact with drinking water and the values of the relevant physical parameters, shall not

exceed the maximum values recommended by IS:

ThepipematerialshallbeinaccordancewithIS4985.

Inspector’s mark on each pipe Any other important matter that the manufacturer or

purchaser deems fit to be inscribed. Elastomeric sealing ring These sealing ring shall be

SturineButadin in red color as specified in IS. The lubricant applied for jointing of elastomeric

rubber ring shall be of good quality and comply the following specifications:

Musthavepastelikeconsistencyandbereadyforuse,preferablysoapjelly. Has to

adhere wet and dry surfaces of UPVC pipes and rubber ring.

Mustbenon-toxic.

Mustbewater-soluble.

Must non-affecting physio-chemical and organoleptic properties of drinkingwaterhave

carried ion the pipe.

Mustnothaveanobjectionableodor.Must

not harmful to the skin.

electromatic sealing ring shall be in accordance with one of the types (Type - 1 to Type – 6)as

per ISS 5382. These sealing rings shall be EPDM rubber ring. The sealing ring shall be with ISI

In case of imported EPDM Ring, such rings shall conform to relevant International Standards

or the Standards of country of origin, which are equivalent or higher than the Bureau of

Indian Standard Specifications. In case of manufacturers who have applied for getting a BIS

certification mark, it would be mandatory for such bidders to produce the BIS certification

license on or before the date of opening of the price bids. An undertaking in this regard shall

have to be provided along with the technical bid.

TherubbersealingringsshallbevulcanizedfromEthylene Propylene (EPDM)withstrengths as

per table 2 of IS 5382-1985.

Type test capacity, test for effect on water, test for resistance to Sulfuric Acid, internal

Hydrostatic pressure test for 1000 Hrs. shall be carried out at least once at any time during

the contract. Or shall be taken at least once during every six months irrespective of the

ordered quantity.

The said type test shall be taken by the representative of authority or third-party inspection

agency at the in-house laboratory of the manufacturer

ThecolorofthepipesshallbeasperIS4985-2000.

The pipes shall bearISImarkconfirmingtoIS:4985-2000orits latest amendment/revision if any.

testforpvcresin&pipe:

TestForPVCResin

It shall be sufficient to show the certificate of chemical test (in accordance with IS 4669) to

the inspecting authority to confirm the 'K' value to be 64 to 67 as per clause No. 6.1.2. of IS

SpecificGravityandAshContentTests:

These tests shall be carried out by the inspection agency as per the IS:4985-2000 OR itslatest

revision OR amendments. The value shall be between 1.40 and 1.46 as per the ISS clause No.

b) SulphateAshcontent:

When tested as per Annex B, of IS 4985-2000, the sulphated ash content in the pipe shall not

exceed IS standard.

c) othertestshallbecarriedoutasperISS4985-2000oritslatestrevisionoramendment

tolerance in weight of pipes:

(-) 1% tolerance in actual weight of pipes shall be allowed but in overall weight there should

not be anyminus tolerance i.e., minus tolerance maybe compensatedin overall weight. If the

tolerance is in minus, the consignment shall be outright rejected. The weight of pipes asgiven

in Appendix-Ishallbe considered. Ifrequired the consignee canweight the whole lot of supply

for verification.

QualityAssurance

The manufacturer shall have a laid down Quality Assurance Plan for the manufacture of the

products offered which shall be submitted along with the tenders.

Unit weight and minimumwall thickness of unplasticizedringfittypePVCpipes are as

perIS4985-2000.

The bidder shall have to arrange for random testing of pipes brought on site, in CIPET in the

presenceoflocalbody’srepresentativeifrequiredandonsatisfactorilyreportfromthe

CIPET. Third party inspection of pipe will be carried out by agency appointed by GUDM and

after receipt of inspection the payment of pipes will be made as per schedule-B.

Therateshallbepaidonrunningmeterbasis.

Item2:Providing&SupplyingSluicevalve:

“SpecificationforDuctileIronResilientSeatedSluicevalves”

1.0 General Features required for Sluice valves suitable to water work application for

continuous operation up to 70 degrees Celsius are as follows or otherwise the standard BS

Ductile Iron / Spheroidal Graphite (S.G.) Iron Double flanged resilient seated Sluice Valves

Full bore in accordance with BS 5163/EN 1074-1&2 of PN-10 /16 rated, with Body and

Bonnet of Ductile Iron confirming to GGG-50/40 or IS 1865 Gr. (SG 500/7 or SG 400/15),

Wedge of WRAS or DVGW approved EPDM rubber (approved for drinking water), Integral

Wedge nut, Shaft ofS.S. AISI 420, Orings of NBR. Body& Bonnet coated withelectrostatically

applied epoxy powder coating to DIN 30677-2 & GSK guidelines or equivalent to GSK

Guideline. Blue colourRAL 5005/5017 withacoatingthickness of 250micronsbothinside&

outside. Sluice valve shall be compatible for buried applications without valve chamber.Face-

to-face dimensions as per BS 5163/EN558 and Flange drilling as per IS 1538. 100% tight

shut-off. Manual operation by Hand wheel.Motorized operation by Electrical Actuator

suitable for SCADA system.

2.0 Markingsandlabelling

Valvesshallhavethefollowingmarkinginraisedletters:-

a. Thenominalsize(i.e.,DN)

b. Thenominalpressuredesignation(i.e.,PN)

c. Thebodymaterialidentification(i.e.,GGG)

d. Themanufacturesname/trademark

e. Yearof manufacturing

f. Directionofclosingmarkings(i.e.,incastdirection arrow)

g. Traceable serial number for each valve, - either as engraved tag plate or bar code labelling

of aluminum or equivalent durable material.

5.0 Certification

a) Manufacture or supplier is requested to provide a copy of the certificate and testing

report from recognized certification body.

b) The Manufacture’s qualitysystemISO9001:2008certifiedbyauthorizedbodyandcopyof

certification submitted on request. c. Manufacture should give minimum 10 Years of

Therateshallbepaidonnumberbasis.

Item3:Air valve:

Tamperproofairvalve:

Tamper proof air valve confirming to AWWA C 512, having outlet for admission and release

of bulk volume of air during emptying and filling of the pipeline. The ball sealed orifice shall

always remain open while air is exhausting and is immediately closed when Water rises in

the chamber, lifts the ball and seals the orifice. It shall also ensure that there are no recesses

or pockets, sheltering, escaping air for the large orifice (low pressure) ball to drop into when

the valve open. Turbulent air at the time of filling of pipe shall not circulate in such cavities

and cause the ball to blown into when the valve is open. Turbulent air at the time of filling of

pipe shall not circulate in such cavities and cause the ball to blown into the discharging air

streams, blowing the valve shut prematurely. The cone angle of the lower pressure chamber

shall be such that even at the critical velocity of all air escape at 300 m/sec. The total impact

force on the ball is less than the suction force on the angular area between the ball and the

cone. The design of the valve should be such as to allow maximum free air discharge at

various pressure differentials. The low-pressure cover shall be massive and designed to

withstand full operating thrust in working Conditions. The seat ring shall be held securely in

place under the low-pressure cover by a joint support ring to prevent it from sagging when

the ball is not sealing the orifice.

All valves shall hydrostatically tested by the manufacturer before dispatch. The pressureshall

be obtained without any significant hydraulic shock. Testing shall be carried on before

applicationofpaint.Thereshallbenoairentrappedwithinthepartofthevalvessubjectedto test

pressure. Test pressure as per AWWA C512 or API 598. Positive material Identification (PMI

Test) PMI test shall be checked at random for Stainless steel parts.

TestCertificates

When specified by Owner, the manufacturer shall issue a test certificate confirming that the

valves have been tested in accordance with this standard and stating the actual pressuresand

medium used in the test.

Markingshallbecastintegralonthebodyoronaplatesecurelyattachedtothebody

for„DN‟size,„PN‟rating,HeatNumberandSerial number.

Each valve shall be drained, cleaned, prepared and suitable protected with 2 coats of

redoxideandthenblackbituminouspaintforminimumof150-micronDFTonsurfaces

before dispatch.

Therateshallbepaidonnumberbasis.

ItemNo.4:PVC fittings:

Materials use for PVC pipe fittings such as couplers, saddles, tee, elbow, Reducer, 90-degree

Bends light, 90degree Bends heavy, end cap all size as perschedule B are as per standards of

Therateshallbepaidonnumberbasis.

ItemNo.5:C.I.D.joints:

TheC.I.D.jointsshallbecompletewithjointflangesdulydrilled,syntheticrubbersealing

ringsmanufacturedfromstyrenebutadienerubber(SBR)andotherrequireaccessories.

C.I.D.jointsmustbemeetthestandardsasperIS8794-1988.

Therateshallbeaspernumber basis.

ItemNo.6 :Construction of valve chamber :Construction of valve chamber in brick or bella

stone masonry locally available in CM 1:6 foundation concrete 150 mm thick in C.C. (1:4:8)

of trap metal of size 25 mm to 40 mm thick inside cement plaster in CM (1:3) and cement

pointing outside in C.M. 1:3 and top cover of precast slab 100 mm thick. (With Key hole in

two part, each with handle of MS. Bar etc. completed. As given size) Up to 1.00 mt. Depth

from G.L. to pipe invert level incl. complete civil works. But excl. cost of excavation and

refilling, with cast in situ RCC slab in one single piece with fixing of C.I.M.H. frame and cover

(excl. cost of CIMH frame and cover) with 23 cm thick brick masonary wall in C.M. 1:6

1) Inside size of RCC chamber is as above.

2) 12 mm thick cement plaster in CM 1:3 shall be provided on inside and outside of walls up to

cm below from G.L..

3) Reinforcement for the cover slab shall be provided considering heavy traffic load.

4) Curing of concrete, RCC etc. shall be done using chemical or water for 14 days.

5) 12 mm dia MS bar handles minimum two nos. shall be provided to each piece of slab during the

time of casting of slab.

6) Sides of chamber shall be refilled properly with selected excavated earth.

7) All the above items shall be carried out in workman like manner as per prevalent sound

engineering practice and instruction of Engineer-in-charge.

Mode of measurement:measurement On No Basis

Payment: Payment shall be made at the rate quoted in schedule and rate covers cost of supply of

ItemNo.7:Chamber Cover:

Supply & fixing cold formed light guage steel frame sections confirming to SP:6(5) 1980 at site or work

including riveted,bolted or welded in builtup for all type of section in framed work,cutting hoisting

,fixing in position and applying primer coat of approved steel primer etc. complete as per structural

designs & direction of Engineer - in -charge.

Mode of measurement:measurement On No Basis

Payment: Payment on Work done on nos basis.

ItemNo.8:Wetmixmacadamsub-base/base Scope:

406. WETMIXMACADAMSUB-BASE/BASE

This work shall consist of laying and compacting clean, machine crushed chips and granular

material, premixed with water, to a dense mass on a prepared sub grade/sub-base/base or

existing pavement as the case may be in accordance with the requirements of these

specifications. The material shall be laid in single layer as necessary to lines, grades and

cross-sections shown on the approved drawings or as directed by the Engineer.

The thickness of a single compacted Wet Mix Macadam layer shall not be less than 125mm.

When vibrating or other approved types of compacting equipment are used, the compacted

depth of a single layer of the sub-base course may be up to 125 mm with the approval of the

Physicalrequirements:

Coarse aggregates shall be crushed stone. If crushed gravel / single is used, not less than

percent by weight of the gravel / single pieces retained on 4.75 mm sieve shall have at least

two fractured faces. The aggregates shall conform to the physical requirements set forth in

Table 400-12 below.

If the water absorption value of the coarse aggregate is greater than 2 per cent, thesoundness

test shall be carried out on the material delivered to site as per IS: 2386 (Part-5).

TABLE-400-12.PHYSICALREQUIREMENTSOFCOARSEAGGREGATESFOR WET

MIX MACADAM FOR SUB-BASE/BASE COURSES

Test TestMethod Requirements

1. * Los Angeles Abrasion IS: 2386 (PART-4) 40percent(Max)

*Aggregate impact value. IS: 2386 (PART-4) or IS: 5640 **30 percent

2. Combined Flakiness and IS: 2386 (PART-I) 35percent(Max)**

Elongation indices (Total)

* Aggregatemaysatisfyrequirementsofeitherofthetwotests.

* To determine this combined proportion, the flaky stone from a representative sample

shouldfirstbeseparatedout.Flakinessindexisweightofflakystonemetaldividedbyweight of

stone sample. Only the elongated particles are separated out from the remaining (non- flaky)

stone metal. Elongation index is weight of elongated particles divided by total non- flaky

particles. The value of flakiness index and elongation index so found are added up.

Gradingrequirements:

TheaggregatesshallconformtothegradinggiveninTable400.13.

GRADINGREQUIREMENTSOFAGGREGATESFORWETMIXMACADAM

ISSieveDesignation PercentbyweightpassingtheIS sieve

600.00Micron 8-22

75.00Micron 0-8

Materialsfinerthan425micronshallhavePlasticityIndex(PI)notexceeding6.

The final gradation approved within these limits shall be well graded from coarse to fine and

shall not vary from the low limit on one sieve to the high limit on the adjacent sieve or vice

ConstructionOperations

Preparation of base: The surface of the subgrade/sub-base/base to receive the wet mix

macadam course shall be prepared to the specified lines and crossfall (camber) andmade free

of dust and other extraneous material. Any ruts or soft yielding places shall be corrected in

an approved manner and rolled until firm surface is obtained if necessary by sprinkling

water. Any sub-base/base/surface irregularities, where predominant, shall be made good by

providing appropriate type of profile corrective course (levelling course) to Clause 501 of

these Specifications.

As far as possible, laying wet mix macadam course over an existing thick bituminous layer

may be avoided since it will cause problems of internal drainage to the pavement at the

interface of two courses. It is desirable to completely pick out the existing bituminous course

where wet mix macadam is proposed to be laid over it.

Provision of lateral confinement of aggregates: While constructing wet mix macadam,

arrangement shall be made for the lateral confinement of wet mix. This shall be done by

laying materials in adjoining shoulders along with that of wet mix macadam layer and

following the sequence of operations described in Clause 404.3.3.

Preparation of mix: Wet Mix Macadam shall be prepared in an approved mixing plant of

suitable capacity having provision for controlled addition of water and forced/positive

mixing arrangement like pug mill or pan type mixer of concrete batching plant. The plant

shall have following features:

i. Forfeedingaggregates-three/fourbinfeederswithvariablespeed motor

ii. Vibratingscreenforremovalofoversizeaggregates

iii. Conveyor Belt

iv. Controlledsystemforadditionof water

v. Forced/positivemixingarrangementlikepug-millorpantype mixer

vi. Centralized control panel for sequential operation of various devices and precise

process control

vii. Safetydevices

Optimum moisture for mixing shall be determined in accordance with IS: 2720 (Part-8) after

replacing the aggregate fraction retained on 22.4 mm sieve with material of 4.75 mm to

mm size. While adding water, dew allowance should be made for evaporation losses.

However, at the time of compaction, water in the wet mix should not vary from the optimum

value by more than agreed limits. The mixed material should be uniformly wet and no

segregation should be permitted.

Spreading of mix: Immediately after mixing, the aggregates shall be spread uniformly and

evenly upon the prepared sub grade/sub- base/base in required quantities. In no case should

these be dumped in heaps directly on the area where these are to be laid nor shall their

hauling over a partly completed stretch be permitted.

The mix may be spread either by a paver finisher or motor grader. For portions where

mechanical means cannot be used, manual means as approved by the Engineer shall be used.

The motor grader shall be capable of spreading the material uniformly all over the surface.Its

blade shall have hydraulic control suitable for initial adjustments and maintaining the same

so as to achieve the specified slope and grade.

The mix may be spread by a paver finisher. The paver finisher shall be self-propelled of

adequate capacity with following features:

i. Loading hoppers and suitable distribution system, to provide a smoothuninterrupted

material flow for different layer thicknesses from the tipper to the screed.

ii. Hydraulically operated telescopic screed for paving width up to 8.5 m and fixed

screed beyond this. The screed shall have tamping and vibrating arrangement for

initial compaction of the layer.

iii. Automatic levelling control system with electronic sensing device to maintain mat

thickness and cross slope of mat during laying procedure.

In exceptional cases where it is not possible for the paver to be utilized, mechanical means

like motor grader may be used with the prior approval of the Engineer. The motor grader

shall be capable of spreading the material uniformly all over the surface.

The surface of the aggregate shall be carefully checked with templates and all high or low

spots remedied by removing or adding aggregate as may be required. The layer may

betestedbydepthblocksduringconstruction.Nosegregationoflargerandfineparticlesshould be

allowed. The aggregates as spread should be of uniform gradation with no pockets of fine

The Engineer may permit manual mixing and /or laying of wet mix macadam where small

quantity of wet mix macadam is to be executed. Manual mixing/laying in inaccessible /

remote locations and in situations where use of machinery is not feasible can also be

permitted. Where manual mixing/laying is intended to be used, the same shall be done with

the approval of the Engineer.

Afterthemixhasbeenlaidtotherequiredthickness,gradeandcrossfall/camberthe same

shall be uniformly compacted, to the full depth with suitable roller. If the thickness of single

compacted layer does not exceed 100 mm, a smooth wheel roller of 80 to 100 KN weight may

be used. For a compacted single layer up to 200 mm, the compaction shall be done with the

help of vibratory roller of minimum static weight of 80 to 100 KNorequivalent capacity

roller. The speed of the roller shall not exceed 5 km/h.

In portions having unidirectional cross fall / super elevation, rolling shall commence

from the lower edge and progress gradually towards the upper edge. Thereafter, roller

shouldprogressparalleltothecentrelineoftheroad,uniformlyover-lappingeachpreceding

trackbyat least onethird width untilthe entire surface has beenrolled. Alternate trips ofthe

roller shall be terminated in stops at least I in away from any preceding stop.

In portions in camber, rolling should begin at the edge with the roller runningforward

and backward until the edges have been firmly compacted. The roller shall then progress

gradually towards the centre parallel to the centre line of the road uniformly overlapping

each of the preceding tracks by at least one-third width until the entire surface has been

Any displacement occurring as a result of reversing of the direction of a roller or from

any other cause shall be corrected at once as specified and/or removed and made good.

Along forms, kerb, walls or other places not accessible to the roller, the mixture shall

be thoroughly compacted with mechanical tampers or a plate compactor. Skin patching of an

area without scarifying the surface to permit proper bonding of the added material shall not

Rolling should not be done when the sub grade is soft or yielding or when it causes a

wave-like motion in the sub-base / base course or sub grade. If irregularities develop 4uring

rolling which exceed 12 mm when tested with a 3 metre straight edge, the surface should be

loosened and premixed material added or removed as required before rolling again so as to

achieve a uniform surface conforming to the desired grade and cross fall. In no case should

the use of unmixed material be permitted to make up the depressions.

Rolling shall be continued till the density achieved is at least 98 per cent of the

maximum dry density for the material as determined by the method outlined in IS:

After completion, the surface of any finished layer shall be well closed, free from

movement under compaction equipment or any compaction planes, ridges, cracks and loose

material. All loose, segregated or otherwise defective areas shall be made good to the full

thickness of the layer and recomputed.

Settinganddrying:

After final compaction of wet mix macadam course, the road shall be allowed to

dryfor 24 hours.

OpeningtoTraffic

Preferably no vehicular traffic of any kind should be allowed on the finished wet mix

macadam surface till it has dried and the wearing course lay.

SurfaceFinishandQualityControlofWork

Surfaceevenness:Thesurfacefinishofconstructionshallconformtothe requirements of Clause

Quality control: Control on the quality of materials and works shall be exercised by the

Engineer in accordance with Section

RectificationofSurfaceIrregularity

Where the surface irregularity of the wet mix macadam course exceeds the permissible

tolerances or where the course is otherwise defective due to sub grade soil getting mixed

with the aggregates, the full thickness of the layer shall be scarified over the affected area,

reshaped with added premixed material or removed and replaced with fresh premixed

material as applicable and recomputed in accordance with Clause 406.3. The area treated in

the aforesaid manner shall not be less than 5 in long and 2 in wide. In no case shall

depressions be filled up with unmixed and ungraded material or fines.

ArrangementforTraffic

Duringtheperiodofconstruction,arrangementoftrafficshallbedoneasperClause

MeasurementsforPayment

Wetmixmacadamshallbemeasuredasfinishedworkinpositionincubicmetres,

The Contract unit rate for wet mix macadam shall be payment in full for carrying out

the following operations including full compensation for all components listed below.

1. Making arrangements for traffic to Clause 112 except for initial treatment to

verges,shoulders and construction of diversions;

2. Supplyingallmaterialstobeincorporatedintheworkincludingallroyalties,fees, rents

where necessary and all leads and lifts;

3. Alllabour,tools,equipmentandincidentalstocompletetheworktotheSpecifications;

4. Carryingouttheworkinpartwidthsofroadweredirectedand

5. Carryingouttherequiredtestsforqualitycontrol.

Item No. 9:Construction of granular sub-base by providing close graded

material,spreading in uniform layers with motor grader on prepared surface, mixing

by mix inplace method with front end loader at OMC and compacting with vibratory

roller toachieve the desired density, complete as per clause 401 (Grade-V) (Mix in

401 GRANULARSUB-BASE

This work shall consist of laying and compacting well-graded material on prepared

subgrade in accordance with the requirements of these Specifications. The material

shall be laid in one or more layers as sub-base or lower sub-base and upper sub-base

(termed as sub-base hereinafter) as necessary according to lines, grades and cross-

sections shown on the drawings or as directed by the Engineer.

The material to be used for the work shall be natural sand, crushed gravel, crushed stone, crushed

slag, or combination thereof depending upon the grading required. Useof materials like brick

metal, Kankar and crushed concrete shall be permitted in the lowersub-

base.Thematerialshallbefreefromorganicorotherdeleteriousconstituents

andshallconformtothegradingsgiveninTable400-1andphysicalrequirementsgiven in Table 400-2.

Gradings III and IV shall preferably be used in lower sub-base. Gradings V and VI shall be used as

a sub-base-cum-drainage layer. The grading to be adopted for a project shall be as specified in the

Contract. Where the sub-base is laid in two layers as upper sub-base and lower sub-base, the

thickness of each layer shall notbe less than 150 mm.

If the water absorption of the aggregates determined as per IS:2386 (Part 3) is greater than

percent, the aggregates shall be tested for wet Aggregate Impact Value (AIV) (IS:5640). Soft

aggregates like Kankar, brick ballast and laterite shall also be tested for Wet AIV (IS:5640).

Table 400-1: Grading forGranular Sub-BaseMaterials

IS Sieve PercentbyWeightPassingtheIS Sieve

GradingI Grading Grading

Designation GradingII GradingIll GradingIV

Table400-2: Physical RequirementsforMaterialsforGranular Sub-base

AggregateImpactValue(AIV) 40 maximum

LiquidLimit IS:2720(Part5) Maximum25

PlasticityIndex IS:2720(Part5) Maximum6

Minimum 30 unless

CBRat98%drydensity

IS:2720(Part5) otherwise

(at IS:2720-Part 8)

specifiedintheContract

ConstructionOperations

PreparationofSub-grade

Immediately prior to the laying of sub-base, the subgrade already finished to Clause 301 or

305asapplicableshallbepreparedbyremovingallvegetationandotherextraneousmatter,lightly

sprinkled with water, if necessary and rolled with two passes of80-100 kN smooth wheeled roller.

401.3.2 SpreadingandCompacting

The sub-base material of the grading specified in the Contract and water shall be mixed

mechanically by a suitable mixer equipped with provision for controlled addition of water and

mechanical mixing. So as to ensure homogenous and uniform mix. The required water content

shall be determined in accordance with 18:2720 (Part 8). The mix shall be spread on the prepared

subgrade with the help of a motor grader of adequate capacity, its blade having hydraulic controls

suitable for initial adjustment and for maintaining the required slope and grade during the

operation, or other means as approved by the Engineer.

Moisture content of the mix shall be checked in accordance with IS:2720 (Part 2) and

suitably adjusted so that, at the time of compaction, it is from 1 to 2 percent below the optimum

moisture content.

Immediately after spreading the mix, rolling shall be done by an approved roller. If the

thickness of the compacted layer does not exceed 100 mm, a smooth wheeled roller of 80 to

kNweightmaybeused.Foracompactedsinglelayer,upto200mmthecompactionshallbedone with the

help of a vibratory roller of minimum 80 to 100 kN static weight capable of achievingthe required

compaction. Rolling shall commence at the lower edge and proceed towards the upper edge

longitudinally for portions having unidirectional cross fall or on super-elevation. For carriageway

having cross fall on both sides, rolling shall commence at the edges and progress towards the

Each pass of the roller shall uniformly overlap not less than one-third of the track made in

theprecedingpass.Duringrolling,thegradeandcrossfall(camber)shallbecheckedandanyhigh spots or

depressions which become apparent, corrected by removing or adding fresh material. The speed of

the roller shall not exceed 5 km per hour.

Rolling shall be continued till the density achieved is at least 98 percent of the maximum

dry density for the material determined as per IS:2720 (Part 8). The surface of any layer

ofmaterialoncompletionofcompactionshallbewellclosed,freefrommovementundercompaction

equipment and from compaction planes, ridges, cracks, or loose material. All loose, segregated or

otherwise defective areas shall be made good to the full thickness of layer and re-compacted.

SurfaceFinishandQualityControlofWork

ThesurfacefinishofconstructionshallconformtotherequirementsofClause902.Control on the

quality of materials and works shall be exercised by the Engineer in accordance with Section

ArrangementsforTraffic

During the period of construction, arrangements for the traffic shall be provided and

maintained in accordance with Clause

MeasurementsforPayment

Granularsub-baseshallbemeasuredasfinishedworkinpositionincubic

The protection of edges of granular sub-base extended over the full formation as shown in

the drawing shall be considered incidental to the work of providing granular sub-base and as such

no extra payment shall be made for the same.

TheContractunitrateforgranularsub-baseshallbepaymentinfullforcarryingoutthe required

operations including full compensation for:

i. makingarrangementsfortraffictoClause112exceptforinitialtreatmenttoverges,shoulders and

construction of diversions;

ii. supplyingallmaterialstobeincorporatedintheworkincludingallroyalties,fees,rents where

applicable with all leads and lifts;

iii. alllabour,tools, equipment,andincidentalstocompletetheworktotheSpecifications;

iv. carryingouttheworkinpartwidthsofroadwheredirected;and

v. carryingouttherequiredtestsforqualitycontrol.

ItemNo.10:flow meter:

Flow measuring system shall consist of flow sensor/ transducers, flow computer & flow

transmitter, digital flow indicator & integrator and any other item required to complete the

system. The flow sensor and Transmitter should be separated by a corrosion resistant

material. Flow sensors / transducers shall be rugged in construction and shall be suitable for

continuous operation. Flow transducers shall have waterproof construction and shall be

suitable for installation on underground /above ground pipelines. In line type/removal of

flowsensorsshallbepossiblewhenpipelinesarepressurizedandshouldbeLeak-proofat

1.5 times the working pressure at that location.This is not applicable if electromagnetic

inlineflowmeterisconsidered.Toavoidtheeffectsofdisturbancesinthevelocityprofile,a

straightanduninterruptedrun,upstreamaswellasdownstreamfromthelocationofthe

flowsensorshallbeprovided,asrequiredbytheflowmetermanufacturer.Theexactlocation of

flow transducers shall be finalized in consultation with Engineer-in charge

Representative.Theflowtransmittershallbesuitableforfieldmountingandshallaccept

inputfromtheflowtransducer.Itshallprocesstheinputsignalandprovide4-20mADC

outputproportionaltoflowrate.FlowtransmittersshallhaveLCDdisplaytoindicateinstantaneous

flow rate. The flow range shall be adjustable. The flow meters shall be suitable for measuring

flow at velocities of water from 0 to 4 m/sec. Flow measurement shall not be

affectedbyphysicalpropertiesofwaterviz.,temperature,pressure,viscosity,densityetc., within

given limits. Contractor shall provide compensating electronic circuits, if

required. Contractor shall construct a suitable concrete chamber for enclosing flow

transducer to be mounted on underground pipelines. A concrete cabin shall be constructed

above the chamber for housing the flow transmitter. A concrete cabin shall be constructedfor

housing the flow transducer and the flow transmitter to be mounted on surface pipelines.

The flow transmitter shall be microprocessor based and shall have self-diagnosis facility.

Measurement of flow at site will be by full bore Electromagnetic type flow meter.

Electromagnetic Flow Meter shall be installed on discharge header pipeline and tail end for

flow measurement.

NameofPumping Station:

Sr. particulars Unit DepartmentalRequirement Bidders’data

1 Service Flowmeasurementoncommon

discharge header

2 Linesize Asper site requirement

3 Rangesetting Asper site requirement

4 LiquidType Clearwater/rawwater

5 Typeofsolid Silt particles

6 Operatingpressure Asperpump/pipepressure

7 Operatingtemperature 0oCto 50oC.

8 Overall accuracy of ±0.5%offull scale

9 Quantity No. Asper price bid

1 Type FullboretypeElectromagnetic

2 No.of paths Asperrequirement

3 Measuringprinciple MagneticInduction

4 Weather Protection IP68of IS:13947Part(I)

5 Measuringprinciple MagneticInduction

6 Type PulsedDC excitation

7 System Separatewithcableoutput

8 Powersupply 240VAC,50Hz

9 EndConnections WeldedFlangesofCarbonSteel

10 FlangeRating&Material PN1.0/1.6/2.0Cast steel

11 Electrode Measuring, reference and empty

pipe electrodes with empty pipe

detection &alarm facility

12 Electrode material SS 316 (Stainless steel)

13 Metertube SS304(Stainlesssteel)

14 Electrodetype Roundheadelectrodes(Bullet

15 Liningmaterial Neoprene/Polyurethane

16 Protectioncategory IP68IS:13947Part(I)

17 Measuringaccuracy ± 0.5% of measured value

inclusive of linearity,

repeatability, pressure effect

and hysterics between 0.5 -

18 CoilHousing SS 304 with fully welded

19 Connection / Junction SS

20 Earthing Grounding rings in SS

(earthing electrodes not

21 Fluid conductivity >5Siemens/cm

22 Marking Directionofflowwitharrow, size,

(C)FlowTransmitter

1 Type Microprocessor based of

2 Displaylanguage English

3 Ambienttemperature -20Cto+600C

4 Display Minimum2linebacklitLCD/

LEDforindicationofactualflow

rate, forward, reverse, sum

5 Outputs Onecurrentoutput(4–20mA)

OnesaleablepulseoutputOne

6 ProtectionCategory IP65IS:

7 Enclosure Die Cast Aluminum with

polyurethane finish with glass

8 Programming Throughkey/keypadonfront

fascia/optical touch key

9 PowerSupply 240VAC,50Hz

10 Cable Gland ½”NPT(4glandsofdouble

compression type)

11 Mounting Wallmounted

12 Interface RS 485, based on EIA R 422/485

standard, or HART

13 Powerfailuremode ProvisionofRAM/PROMtostorepa

rameterenteredand

measured flow data during

14 Max.Separation Up to 200 meters between

sensor&transmitterwithout any

signal boosters

15 Terminals Shock–hazardprotectedpush lock

16 ErrorIdentification 0/3.6/22mAmp

17 Interchangeability Fullyinterchangeablewithall sizes

of flow sensors

18 Safetyclassification Generalpurposecertification

E)FlowIndicatorand Integrator

1 Type Microprocessorbased

2 Display Digital,sevensegmentbacklit LCD

3 FlowIndicator Totalizes Internal8-digitLCD Totalizes

4 DigitHeight 14mmorHigher

5 No.ofDigitsfor

Flowindicator 5Digits

Flowintegrator 8Digits

6 Zero and span Required

7 ManualResetFacilityfor Required(shallbekey operated)

flow integrator

8 EngineeringUnitsfor

Flowrate indicator in M3/Hr

Flowintegrator inMl

1 Prefabricated integral Required minimum 10 meters in

cable for connecting single length

sensorsand transmitter

2 Battery backup for Required

3 BatteryType 3.6 VDC Non-Rechargeable

Lithium-thionyl chloride / Ni-Cd

high power batteries

4 Battery Life Minimum 5 Year Battery

Output GSM/GPRSoutputrequired

IntegratedGSM/GPRSMod Required for hourly basis

em worldwide transmission of

measured data and events

viae-mailandSMS

Therateshallbeaspernumber basis.