Basi Calculation for Pump & Tank Selection

BASIC CALCULATION FOR PUMP & TANK SELECTION The following are the design considered based on NFPA 13 / 14 & 24 1) FIRE HOSE REEL SYSETM FHR Flow rate = 50 gpm Max No of FHR in operation at any time = 2 Nos Duration of operation = 90 mins Ordinary Hazard- II (e.g Public ) Fire hose reel TANK STORAGE CAPACITY (for Ordinary Hazard Area) = 50 gpm * 2 No * 90 Mins

9000

Total storage volume required 1 galloons = 3.785 litres

gpm

= 9000 gallons (Minimum)

Total storage volume required = 9000 gallons * 3.785

34065

TOTAL STORAGE TANK VOLUME

34

litres m3

Pump flow rate required = 2 x 50 gpm = 100 gpm Fire hose reel pump Head calculation Residual Pressure required at FHR = 4.0 Bar Pressure loss in pipe/fittings etc = 0.5 bar (assumed, larger length of pipe needs more pressure) Safety = 0.5 bar Total head pressure required

= 5.0 bar Minimum.

2) FIRE HYDRANT SYSETM Hydrant Flow rate = 250 gpm Max No of FH in operation at any time = 2 No Duration of operation = 90 mins Ordinary hazard II (e.g Public) Fire hydrant TANK STORAGE CAPACITY (for Ordinary Hazard Area) = 250 gpm * 2 No * 90 Mins

45000

gpm

Total storage volume required = 45000 gallons (Minimum) 1 galloons = 3.785 litres Total storage volume required = 45000 gallons * 3.785

170325

TOTAL STORAGE TANK VOLUME

170

litres m3

Pump flow rate required = 2 x 250 gpm = 500 gpm Fire hose reel pump Head calculation Residual Pressure required at FHR = 4.5 Bar Pressure loss in pipe/fittings etc = 1.5 bar (assumed, larger length of pipe needs more pressure) Safety = 0.5 bar Total head pressure required

= 6.5 bar Minimum.

3) SPRINKLER SYSETM Sprinkler spacing will be 3.6 meters design density will be 0.15gpm/ft2(Ordinary Hazard) area will be 1500 ft2 to be assumed as fire zone 1500 x 0.15 = 225 gpm Total capacity will be 225gpm... Sprinkler Water Storage Capacity (for Ordinary Hazard Area) = 225 gpm * 1 No * 90 Mins 1 galloons = 3.785 litres

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20250

1 OF 28

gallons

Total storage volume required = 20250 gallons * 3.785

76646

TOTAL STORAGE TANK VOLUME

77

litres m3

4) WET RISER Wet Riser(Landing Valve) Flow rate = 250 gpm Max No of WR in operation at any time = 1 No Duration of operation = 90 mins Ordinary hazard II (e.g Public) Fire hydrant TANK STORAGE CAPACITY (for Ordinary Hazard Area) = 250 gpm * 1 No * 90 Mins

22500

gpm

Total storage volume required = 22500 gallons (Minimum) 1 galloons = 3.785 litres Total storage volume required = 22500 gallons * 3.785

85163

TOTAL STORAGE TANK VOLUME

85

litres m3

Pump flow rate required = 1 x 250 gpm = 250 gpm Fire hose reel pump Head calculation Residual Pressure required at FHR = 4.5 Bar Pressure loss in pipe/fittings etc = 1.5 bar (assumed, larger length of pipe needs more pressure) Safety = 0.5 bar Total head pressure required

= 6.5 bar Minimum.

NOTE:1) ESFR - Early Suppression Fast Response Sprinkler (or) combination of standard sprinklers for overhead

and in-racks

2) If rack sprinklers are provided, then the flow rate and number of sprinklers will vary

TANK CAPACITY

PUMP CAPACITY

FHR FH SPRINKLER SAFETY FACTOR

11 m3 28 m3 34 m3 7 m3

TOTAL

80 m3

FHR FH SPRINKLER HOSE STREAM SAFETY FACTOR TOTAL

Fire Pump Capacity : 750GPM at 8Bar(Electric +Disel+Jockey)

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2 OF 28

100 GPM 250 GPM 300 GPM 50 GPM 50 GPM 750 GPM

1

CALCULATION FOR PUMP & TANK SELECTION The following are the design considered based on ROP standard Part-IV

1.1

FIRE PUMP CALCULATION

a)

FIRE HOSE REEL SYSETM Accordance with ROP. Coverage will be 30meters FHR Flow rate(Minimum discharge rate) = 0. 5 L/s Max No of FHR in operation at any time = 2 Nos Pump flow rate required = 2 x 50 gpm = 100 gpm Fire hose reel pump Head calculation Residual Pressure required at FHR = 4.0 Bar Pressure loss in pipe/fittings etc = 0.5 bar (assumed, larger length of pipe needs more pressure) Safety = 0.5 bar Total head pressure required

b)

= 5.0 bar Minimum.

FIRE HYDRANT SYSETM Accordance with NFPA 24. Each FH Flow rate = 250 gpm Pump flow rate required = 2 x 250 gpm = 500 gpm Fire hose reel pump Head calculation Residual Pressure required at FH = 7.0 Bar Pressure loss in pipe/fittings etc = 1.5 bar (assumed, larger length of pipe needs more pressure) Safety = 0.5 bar Total head pressure required

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= 9.0 bar Minimum.

3 OF 28

c)

SPRINKLER SYSETM Accordance with NFPA 13. Maximum hazard 1500sq.feet will be occur in Ordinary hazard Sprinkler spacing will be 3.6 meters design density will be 0.15gpm/ft2 1500 x 0.15 = 225 gpm Total capacity will be 225gpm... Residual Pressure required at Sprinkler = 3.5 Bar Pressure loss in pipe/fittings etc = 0.5 bar Safety = 0.5 bar Total head pressure required

= 4.5bar Minimum.

NOTE:-

1) ESFR - Early Suppression Fast Response Sprinkler (or) combination of standard sprinklers for overhead and in-ra 2) If rack sprinklers are provided, then the flow rate and number of sprinklers will vary d)

WET RISER Accordance with NFPA 13. Wet Riser(Landing Valve) Flow rate = 250 gpm Max No of WR in operation at any time = 1 No Pump flow rate required = 1 x 250 gpm = 250 gpm Fire hose reel pump Head calculation Residual Pressure required at WR = 4.5 Bar Pressure loss in pipe/fittings etc = 1.5 bar (assumed, larger length of pipe needs more pressure) Safety = 0.5 bar Total head pressure required

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= 6.5 bar Minimum.

4 OF 28

e)

Table ITEM

FLOW RATE (GPM)

FHR FH SPRINKLER LANDING VALVE HOSE STREAM( 5%) SAFETY FACTOR(5%) TOTAL

100 GPM 500 GPM 225 GPM 250 GPM 54 GPM 56 GPM 1185 GPM

FIRE PUMP CAPACITY = 1185 =1250GPM @ 11 BAR(pressure required + 20% ) f)

1.2

Result : 1250 US GPM ELECTRICAL PUMP AT 11 BAR PRESSURE 1250 US GPM DISEL PUMP AT 11 BAR PRESSURE 125 US GPM JOCKEY PUMP AT 11 BAR PRESSURE HIGH PRESSURE WATER MIST PUMP CALCULATION The system is designed as NFPA standard 750, in ordinary Hazard -II(area of operation - 144Sq.meter) Number of nozzles to protect the area of 144 sq.mtr: 12nos of Nozzle will be operate. Nozzle Flow rate = 28.8 Lpm Max No of Nozzle in operation at any time = 12 Nos Pump flow rate required

= 12 x 28.8Lpm = 316.8 L/min

Each pump can discharge 120 lpm @ 120 bar pressure Hence no. of pump required = 316.8/120 = 2.6 ~ 3 nos. Each Motor Drive 1 pump, hence we choose main 3x120 L/min + stand by 1x120 L/min. Total pump capacity on duty of 360 lpm @ 120 bar + 120 lpm @ 120 bar stand by, utilizing 4 nos. Of 30 kW electric driven motor. pump capacity = 3x120L/min at 120 bar pressure +standby 1x120 L.min at 120bar 1.3

FIRE TANK CALCULATION

a)

FIRE HOSE REEL SYSETM FHR Flow rate = 50 gpm Max No of FHR in operation at any time = 2 Nos Duration of operation = 90 mins Ordinary Hazard- II (e.g Public ) Fire hose reel TANK STORAGE CAPACITY (for Ordinary Hazard Area) = 50 gpm * 2 No * 90 Mins Total storage volume required 1 galloons = 3.785 litres

9000 = 9000 gallons (Minimum)

Total storage volume required = 9000 gallons * 3.785 TOTAL STORAGE TANK VOLUME

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5 OF 28

gpm

b)

FIRE HYDRANT SYSETM Hydrant Flow rate = 250 gpm Max No of FH in operation at any time = 2 No Duration of operation = 90 mins Ordinary hazard II (e.g Public) Fire hydrant TANK STORAGE CAPACITY (for Ordinary Hazard Area) = 250 gpm * 2 No * 90 Mins

45000

gpm

22500

gpm

Total storage volume required = 45000 gallons (Minimum) 1 galloons = 3.785 litres Total storage volume required = 45000 gallons * 3.785 TOTAL STORAGE TANK VOLUME c)

SPRINKLER SYSETM Sprinkler spacing will be 3.6 meters design density will be 0.15gpm/ft2(Ordinary Hazard) area will be 1500 ft2 to be assumed as fire zone 1500 x 0.15 = 225 gpm Total capacity will be 225gpm... Sprinkler Water Storage Capacity (for Ordinary Hazard Area) = 225 gpm * 1 No * 90 Mins 1 galloons = 3.785 litres Total storage volume required = 20250 gallons * 3.785 TOTAL STORAGE TANK VOLUME

d)

WET RISER Wet Riser(Landing Valve) Flow rate = 250 gpm Max No of WR in operation at any time = 1 No Duration of operation = 90 mins Ordinary hazard II (e.g Public) Fire hydrant TANK STORAGE CAPACITY (for Ordinary Hazard Area) = 250 gpm * 1 No * 90 Mins Total storage volume required = 22500 gallons (Minimum) 1 galloons = 3.785 litres Total storage volume required = 22500 gallons * 3.785 TOTAL STORAGE TANK VOLUME

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6 OF 28

e)

HIGH PRESSURE WATER MIST SYSTEM Water Tank for 316 lpm with 90 minutes operation = 360 x 90 minute = 28000 litre effective Total storage volume required = 28000 TOTAL STORAGE TANK VOLUME

e)

Table ITEM FHR FH SPRINKLER LANDING VALVE WATER MIST SYSTEM TOTAL

CAPACITY (M3) 34 M3 170 M3 77 M3 85 M3 28 M3 394 M3

WATER TANK CAPACITY = 394 =400M2(Only for fire) f)

Result : 400M3 Water Tank Capacity only for fire Fire tank to maintain an individual dedicated fire tank. This fire tank should be separated into two divisions, One for f system & fire hose reel and the other for fire hydrants

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8 OF 28

rs for overhead and in-racks

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9 OF 28

34065 34

litres m3

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10 OF 28

170325 170

litres m3

20250

gallons

76646

litres

77

85163 85

m3

litres m3

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11 OF 28

28000 28

litres m3

o two divisions, One for fire sprinkler

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PROJECT NO: 1091 PROJECT NAME: PUMP POWER BHP

=

GPM * PUMP HEAD (Feet) * SP GRAVITY 3960 * % OF PUMP EFFICIENCY

SAMPLE CALCULATION

=

750 GPM * 93 * 1 3960 * 0.7

=

69750 2772

=

25.16

=

18872 19

1 hp = 750 Watts

1)

FIRE PUMP FOR PASFR ADMIN BUILDING =

400 GPM * 352 * 1 3960 * 0.7

=

140800 2772

=

50.79

1 hp = 750 Watts

38095 =

2)

38

UTILITY PUMP FOR PASFR ADMIN BUILDING For total loading unit of 8 corresponding design flow rate is = 6 Litre / Sec

360 95.11 95 GPM * 192 * 1 3960 * 0.7

=

18240 2772

3)

=

6.58

=

4935

=

5

SUMP PUMP 15 GPM * 200 * 1 3960 * 0.7 =

3000 2772

=

1.08

=

812

=

0.812

D (Feet) * SP GRAVITY P EFFICIENCY

SP GRAVITY

hp Watts kW

110 352

meter feet

hp Watts kW

6 l/s Litre / Mins

1 galloons = 3.785 litres

gallons / min 60 192

meter feet

=

SPECIFIC GRAVITY OF LIQUI NORMAL WATER = 1

hp Watts kW

200

hp Watts kW

feet

PECIFIC GRAVITY OF LIQUID ORMAL WATER = 1

Each pump can discharge 120 lpm @ 120 bar pressure Hence no. of pump required = 316.8/120 = 2.6 ~ 3 nos. Each Motor Drive 1 pump, hence we choose main 3x120 L/min + stand by 1x120 L/min. Total pump capacity on duty of 360 lpm @ 120 bar + 120 lpm @ 120 bar stand by, utilizing 4 nos. Of 30 kW electric driven motor. Water Tank for 360 lpm with 30 minutes operation = 360 x 30 minute = 10800 litre effective water capacity, therefore water tank capacity with 20% allowance which is of 12960 litre shall be the minimum water capacity.

ng 4 nos. Of

WET RISER Wet Riser(Landing Valve) Flow rate = 250 gpm Max No of WR in operation at any time = 1 No Duration of operation = 90 mins Ordinary hazard II (e.g Public) Fire hydrant TANK STORAGE CAPACITY (for Ordinary Hazard Area) = 250 gpm * 1 No * 90 Mins

22500

gpm

Total storage volume required = 22500 gallons (Minimum) 1 galloons = 3.785 litres Total storage volume required = 22500 gallons * 3.785 TOTAL STORAGE TANK VOLUME b)

FIRE HYDRANT SYSETM Hydrant Flow rate = 250 gpm Max No of FH in operation at any time = 2 No Duration of operation = 90 mins Ordinary hazard II (e.g Public) Fire hydrant TANK STORAGE CAPACITY (for Ordinary Hazard Area) = 250 gpm * 2 No * 90 Mins

45000

Total storage volume required = 45000 gallons (Minimum) 1 galloons = 3.785 litres Total storage volume required = 45000 gallons * 3.785 TOTAL STORAGE TANK VOLUME TOTAL WATER FOR FIRE REQUIREMENT

PUMP POWER BHP

=

GPM * PUMP HEAD (Feet) * SP GRAVITY 3960 * % OF PUMP EFFICIENCY

SAMPLE CALCULATION

=

750 GPM * 93 * 1 3960 * 0.7

=

69750

gpm

2772 =

25.16

hp

=

18872 19

Watts kW

1 hp = 750 Watts

67500

85163 85

170325

litres m3

litres

170

m3

255

m3

BASIC CALCULATION FOR PUMP & TANK SELECTION The following are the design considered based on NFPA 13 / 14 & 24 1) FIRE HOSE REEL SYSETM FHR Flow rate = 50 gpm Max No of FHR in operation at any time = 2 Nos Duration of operation = 90 mins Ordinary Hazard- II (e.g Public ) Fire hose reel TANK STORAGE CAPACITY (for Ordinary Hazard Area) = 50 gpm * 2 No * 90 Mins Total storage volume required 1 galloons = 3.785 litres

9000

gpm

= 9000 gallons (Minimum)

Total storage volume required = 9000 gallons * 3.785

34065

TOTAL STORAGE TANK VOLUME

34

litres m3

Pump flow rate required = 2 x 50 gpm = 100 gpm Fire hose reel pump Head calculation Residual Pressure required at FHR = 4.0 Bar Pressure loss in pipe/fittings etc = 0.5 bar (assumed, larger length of pipe needs more pressure) Safety = 0.5 bar Total head pressure required

= 5.0 bar Minimum.

2) FIRE HYDRANT SYSETM Hydrant Flow rate = 250 gpm Max No of FH in operation at any time = 2 No Duration of operation = 90 mins Ordinary hazard II (e.g Public) Fire hydrant TANK STORAGE CAPACITY (for Ordinary Hazard Area) = 250 gpm * 2 No * 90 Mins

45000

gpm

Total storage volume required = 45000 gallons (Minimum) 1 galloons = 3.785 litres Total storage volume required = 45000 gallons * 3.785

170325

TOTAL STORAGE TANK VOLUME

170

Pump flow rate required = 2 x 250 gpm = 500 gpm Fire hose reel pump Head calculation Residual Pressure required at FHR = 4.5 Bar Pressure loss in pipe/fittings etc = 1.5 bar (assumed, larger length of pipe needs more pressure) Safety = 0.5 bar Total head pressure required

= 6.5 bar Minimum.

4) WET RISER Wet Riser(Landing Valve) Flow rate = 250 gpm Max No of WR in operation at any time = 1 No Duration of operation = 90 mins Ordinary hazard II (e.g Public) Fire hydrant TANK STORAGE CAPACITY (for Ordinary Hazard Area) = 250 gpm * 1 No * 90 Mins

22500

Total storage volume required = 22500 gallons (Minimum)

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25 OF 28

gpm

litres m3

1 galloons = 3.785 litres Total storage volume required = 22500 gallons * 3.785

85163

TOTAL STORAGE TANK VOLUME

85

litres m3

Pump flow rate required = 1 x 250 gpm = 250 gpm Fire hose reel pump Head calculation Residual Pressure required at FHR = 4.5 Bar Pressure loss in pipe/fittings etc = 1.5 bar (assumed, larger length of pipe needs more pressure) Safety = 0.5 bar Total head pressure required

= 6.5 bar Minimum.

NOTE:1) ESFR - Early Suppression Fast Response Sprinkler (or) combination of standard sprinklers for overhead

and in-racks

2) If rack sprinklers are provided, then the flow rate and number of sprinklers will vary

TANK CAPACITY

PUMP CAPACITY

FHR FH SAFETY FACTOR

11 m3 28 m3 7 m3

TOTAL

80 m3

FHR FH HOSE STREAM SAFETY FACTOR TOTAL

Fire Pump Capacity : 750GPM at 8Bar(Electric +Disel+Jockey)

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26 OF 28

100 GPM 250 GPM 50 GPM 50 GPM 750 GPM

1

CALCULATION FOR PUMP & TANK SELECTION The following are the design considered based on ROP standard Part-IV

1.1

FIRE PUMP CALCULATION

a)

FIRE HOSE REEL SYSETM Accordance with ROP. Coverage will be 30meters FHR Flow rate(Minimum discharge rate) = 0. 5 L/s Max No of FHR in operation at any time = 2 Nos Pump flow rate required = 2 x 50 gpm = 100 gpm Fire hose reel pump Head calculation Residual Pressure required at FHR = 4.0 Bar Pressure loss in pipe/fittings etc = 0.5 bar (assumed, larger length of pipe needs more pressure) Safety = 0.5 bar Total head pressure required

b)

= 5.0 bar Minimum.

FIRE HYDRANT SYSETM Accordance with NFPA 24. Each FH Flow rate = 250 gpm Pump flow rate required = 2 x 250 gpm = 500 gpm Fire hose reel pump Head calculation Residual Pressure required at FH = 7.0 Bar Pressure loss in pipe/fittings etc = 1.5 bar (assumed, larger length of pipe needs more pressure) Safety = 0.5 bar Total head pressure required

e)

= 9.0 bar Minimum.

Table ITEM FHR FH HOSE STREAM( 5%) SAFETY FACTOR(5%) TOTAL

FLOW RATE (GPM) 100 GPM 500 GPM 30 GPM 32 GPM 662 GPM

FIRE PUMP CAPACITY =650GPM @ 11 BAR(pressure required + 20% )

ore pressure)

ore pressure)

SAMPLE CAL

=

750 GPM * 93 * 1 3960 * 0.7

=

60450 2772

=

25.16

hp

=

18872 19

Watts kW

1 hp = 750 Watts