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MINISTRY OF ENERGYIRAN POWER DEVELOPMENT COMPANY

I.P.D.C.

(PRIVATE JOINT STOCK)

IRAN POWER PLANT PROJECTSMANAGEMENT Co.

MAPNA

Co.

PROJECT : SHIRVAN GAS TURBINE POWER PLANT

IN-HOUSE REVISIONS DOCUMENT REVISIONS

D D

C C

BAs Per Consultant's

CommentS.M.T 02.May.05 SH.H 02.May.05 SH.H 02.May.05 B

AAs Per MAPNA's

CommentS.M.T 23.Feb.05 SH.H 23.Feb.05 SH.H 23.Feb.05 A

As Per MAPNA'sComment

S.M.T 23.Feb.05 SH.H 23.Feb.05 SH.H 23.Feb.05

0 The First Issue S.M.T 6.Nov.04 SH.H 6.Nov.04 SH.H 6.Nov.04 0 The First Issue S.M.T 6.Nov.04 SH.H 6.Nov.04 SH.H 6.Nov.04

Rev. Description Prep Date Chkd Date Appro. Date Rev. Description Prep Date Chkd Date Appr Date

Page Revisions Remarks Page Revisions Remarks

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Doc. No.: MP-SVG-41ME-08-UPZ-002 Rev. A

Contract No.: File No: 41ME08UPZ002

NAPEECSE Code: MF Code: Page 1 of 16

HYDRAULIC CALCULATION

FOR

SERVICE WATER SYSTEM

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Hydraulic Calculation

for

Service Water System

C O N T E N T S PAGE

1. List of reference documents 4

2. List of reference softwares 4

3. Design Criteria 5

3.1. Site Location

3.2. Site Condition

3.3. Purpose of the System

3.4. Basis of Design

4. Hydraulic calculation for transfer pipeline and distributionnetworkof service water 6

4.1. Basic Formulation

4.2 Hydraulic Calculation

4.2.1 Hydraulic Calculation from Service WaterDischarge Pump to the Elevated Tank4.2.2 Hydraulic Calculation in Service WaterDistribution System

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1. List of reference documents

1.1 PFD for Service Water SystemMP-SVG-41ME-02-UP0-003

1.2 Piping Arrangement of Service Water SystemMP-SVG-41ME-01-UPZ-002

1.3 Elevated Water Tank (View & Details)MP-SVG-58CE-42-CG6-001

1.4 Elevated Water Tank (Tank Detail & Piping)MP-SVG-58CE-42-CG6-002

2. List Of Reference Softwares

2.1 EPANET Version 2.0 Build 2.00.10 U.S. Environmental ProtectionAgency Cincinnati, Ohio.

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3. Design Criteria

3.1. Site location

Shirvan gas turbine power plant is located approximately at 9 km east ofShirvan in the Ghotbabad Road.

3.2. Site condition

Site location 9 km east of Shirvan in the GhotbabadRoad

Site elevation 1115 m above sea level

Max. ambienttemperature 42.3C

Min . ambienttemperature

- 30C

Design ambienttemperature

15C

Relative humidity 56%Design wind velocity 144 km/hr

3.3. Purpose of the system

The function of Service water system is to distribute service water for thegas power plant. The service water will be used for utility stations (floorwashing, irrigation). Service water is transferred from the fire fightingwater reservoir tank (60GAA30-BB001) to the elevated tank (60GHA40-BB001) and distributed in the plant by the head of elevated tank.

3.4. Basis of Design

The service water is distributed by 20m head of the elevated tank(FGKC10-BB001) through the service water distribution piping. Distributionnetwork has been sized on this basis that the velocity in any pipeline shall

not exceed 2.5m/s and pressure in terminal points shall not below 15mwcfor administration building, central control building and 12mwc for otherconsumers. The piping has a rating of 6 barg, using HDPE (DIN 8074) forburied parts and carbon steel pipe for the above ground parts.

The building area and relevant users are listed as below:

Buildings & Areas Users1- Gas turbine hall 6 utility stations2- Central control building Utility station

3- Substation control building Utility station

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hf= ( Lx10.675XQ1.852 )/( C1.852x Di4.8704 )

hf= head loss in meter of water column

C = HAZEN-WILLIAMS constantL = Pipe Length

This formulation is also used for hydraulic calculation of pipeline fromService Water Discharge Pump to Elevated Water Tank.

Using the above-mentioned formulation for determination of head loss,downstream head is obtained as follows:

Down stream head (m) = Upstream head Head Loss Static LevelDifference

4.2 Hydraulic Calculation

4.2.1- Hydraulic Calculation from Service Water Discharge Pump tothe Elevated Tank

A- Within Firefighting Pump House:

From node: 40To node: 41

Line No.: 39Q = 15 m3/hr = 0.0042 m3/sDN = 50 (XS pipe) Emin = 5.54 mm Di = 49.2 mmA = 1.90 x 10-3 m2

Q=VA V= 2.21 m/sL= 16.5 m (Instead of calculation of head loss for fittings & valves, thelength of this pipe multiplied by 1.1)

hf = ( Lx10.675XQ1.852 )/( C1.852x Di4.8704 )

C (for C.S. & HDPE pipe) = 140

hf1 = 1.74 mwc

B- From Firefighting Pump House Exit to the Elevated Tank:

HDPE Part:

From node: 41To node: 42Line No.: 40

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Q = 15 m3/hr = 0.0042 m3/sOD = 63 mm Emin = 2.9 mm Di = 57.2 mmA = 2.57 x 10-3 m2

Q = VA V = 1.63 m/sL= 40 m

hf= ( Lx10.675XQ1.852 )/( C1.852x Di4.8704 )


hf2 = ( 40x10.675X0.00421.852 )/( 1401.852x 0.05724.8704 ) = 2.02 mwc

Carbon Steel Part:

From node: 42To node: 43Line No.: 41Q = 15 m3/hr = 0.0042 m3/sDN = 50 (XS pipe) Emin = 5.54 mm Di = 49.2 mmA = 1.90 x 10-3 m2

Q=VA V= 2.21 m/sL= 26.1 m (Instead of calculation of head loss for fittings & valves, thelength of all pipelines multiplied by 1.1)

hf= ( Lx10.675XQ1.852

)/( C1.852

x Di4.8704

)


hf3 = 2.75 mwchf,elevation = 23.8 mwc

hf total = hf 1 + hf 2 + hf 3 + hf,elevation = 30.31 mwc

Considering the above calculation and a margin, service water transferpumps have 35 m total differential head. So the capacity and head of

service water pumps are 15 m3/hr and 35 mwc.

4.2.2- Hydraulic Calculation in Service Water Distribution System:

Hydraulic calculation in the service water distribution network has beencarried out by EPANET Ver. 2. In this section, as a typical example, thedetails of hydraulic calculation from elevated water Tank to node 3 areoutlined as follows:

Static Level Difference = -21.8 m

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Material Of Pipe C.S. 3, Th. 5.49 mm

Di = 77.92 mm

A = x0.102262/4 = 0.0048 m2

Q = 6x0.75 Lps = 4.5 Lps = 0.0045 m3/s

V = 0.0045/0.0048 = 0.94 m/s

Lpipe = 24.8 m

hf= ( 24.8x10.675X0.00451.852 )/( 1401.852x 0.077924.8704 ) = 0.316 mwcUnit Head loss (In Line No.:3) = ((0.316 mwc)/(24.8 m)) x (1000 m) =12.22 m/km

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41ME08UPZ002-REV.B

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