SL.

EXHIBIT A- TECHNICAL SPECIFICATIONSECTION D1.3 DS A RW In P

DATA SHEET A SHEET 1 OF 3

RAW WATER INTAKE PUMPS

SL.NO. ITEM UNITSVALUES

1Total No. of pumps

Nos.3 x 50%

2No. of pumps operatingNos.

2

3Pump capacity m(/hrBy Contractor

4Pump Total Head

excluding losses in the pump

mBy Contractor

5Pump speed (max.) rpmBy Contractor (to limit specific speed to 6000 & ensure adequate NPSH at all conditions)

6Type of pumpVertical mixed flow

7

Type of internal element

Non pull out

8Liquid handled

River water

9Type of line bearing lubricationSelf

10Liquid for lubrication Pumped liquid

11Type of pump motor couplingFlexible

12Thrust bearing locationIn pump and motor

13Pump operating rangeRefer Note-1

14Motor ratingMinimum 116% of duty point requirement and also to meet the maximum power requirement over the operating range at 52.5 Hz frequency.

15Materials of construction

(a) Pump column pipeFab steel to IS:2062 with epoxy painting

(b) Pump bowl and discharge

elbowCI to IS:210 FG 260

(c) ImpellerSS 304 / BRONZE IS:318 Gr 2.

(d) Shaft SS 410

(e) Line shaft couplingSS 410

(f) Line shaft bearingCutlass rubber in SS shell

(g) All hardware under waterSS 304

(h) Sole plateMS to IS 2062

(i) Base plateCI/MS

(j) Shaft sleeveSS

1.6Inspection RequirementAs per relevant section

1)Note :

Pumps shall be capable of operating from shut-off point to a maximum flow of 10% over the point of intersection between system resistance curve and pump HQ curve for single pump operation.

2) Contractor shall establish the water levels in the reservoir and accordingly design the head of raw water pumps

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