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SIMON ENGG. PARTNERS 1 OF 28
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 gpmMax No of FHR in operation at any time = 2 NosDuration 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 gpm Total storage volume required = 9000 gallons (Minimum)1 galloons = 3.785 litres Total storage volume required = 9000 gallons * 3.785 34065 litres TOTAL STORAGE TANK VOLUME 34 m3 Pump flow rate required = 2 x 50 gpm = 100 gpmFire hose reel pump Head calculationResidual 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 gpmMax No of FH in operation at any time = 2 NoDuration 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 litres TOTAL STORAGE TANK VOLUME 170 m3 Pump flow rate required = 2 x 250 gpm = 500 gpmFire hose reel pump Head calculationResidual 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 metersdesign 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 20250 gallons1 galloons = 3.785 litres
SIMON ENGG. PARTNERS 2 OF 28
Total storage volume required = 20250 gallons * 3.785 76646 litres
TOTAL STORAGE TANK VOLUME 77 m3
4) WET RISER Wet Riser(Landing Valve) Flow rate = 250 gpmMax No of WR in operation at any time = 1 NoDuration 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 litres TOTAL STORAGE TANK VOLUME 85 m3 Pump flow rate required = 1 x 250 gpm = 250 gpmFire hose reel pump Head calculationResidual 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 11 m3 FHR 100 GPMFH 28 m3 FH 250 GPM
SPRINKLER 34 m3 SPRINKLER 300 GPMSAFETY FACTOR 7 m3 HOSE STREAM 50 GPM
TOTAL 80 m3SAFETY FACTOR 50 GPM
TOTAL 750 GPM
Fire Pump Capacity : 750GPM at 8Bar(Electric +Disel+Jockey)
SIMON ENGG. PARTNERS 3 OF 28
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 SYSETMAccordance with ROP. Coverage will be 30metersFHR Flow rate(Minimum discharge rate) = 0. 5 L/sMax No of FHR in operation at any time = 2 Nos Pump flow rate required = 2 x 50 gpm = 100 gpmFire hose reel pump Head calculationResidual 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.
b) FIRE HYDRANT SYSETMAccordance with NFPA 24. Each FH Flow rate = 250 gpmPump flow rate required = 2 x 250 gpm = 500 gpmFire hose reel pump Head calculationResidual 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 = 9.0 bar Minimum.
SIMON ENGG. PARTNERS 4 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 metersdesign density will be 0.15gpm/ft21500 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 barSafety = 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-racks
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 gpmMax No of WR in operation at any time = 1 NoPump flow rate required = 1 x 250 gpm = 250 gpmFire hose reel pump Head calculationResidual 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 = 6.5 bar Minimum.
SIMON ENGG. PARTNERS 5 OF 28
e) Table
ITEM FLOW RATE (GPM)
FHR 100 GPMFH 500 GPM
SPRINKLER 225 GPMLANDING VALVE 250 GPM
HOSE STREAM( 5%) 54 GPMSAFETY FACTOR(5%) 56 GPM
TOTAL 1185 GPM
FIRE PUMP CAPACITY = 1185 =1250GPM @ 11 BAR(pressure required + 20% )
f) 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
1.2 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 LpmMax 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 gpmMax No of FHR in operation at any time = 2 NosDuration 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 gpm Total storage volume required = 9000 gallons (Minimum)1 galloons = 3.785 litres Total storage volume required = 9000 gallons * 3.785 TOTAL STORAGE TANK VOLUME
SIMON ENGG. PARTNERS 6 OF 28
b) FIRE HYDRANT SYSETM Hydrant Flow rate = 250 gpmMax No of FH in operation at any time = 2 NoDuration 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 TOTAL STORAGE TANK VOLUME
c) SPRINKLER SYSETM
Sprinkler spacing will be 3.6 metersdesign 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 Mins1 galloons = 3.785 litresTotal storage volume required = 20250 gallons * 3.785
TOTAL STORAGE TANK VOLUME
d) WET RISER Wet Riser(Landing Valve) Flow rate = 250 gpmMax No of WR in operation at any time = 1 NoDuration 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
SIMON ENGG. PARTNERS 7 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 CAPACITY (M3)
FHR 34 M3FH 170 M3
SPRINKLER 77 M3LANDING VALVE 85 M3
WATER MIST SYSTEM 28 M3TOTAL 394 M3
WATER TANK CAPACITY = 394 =400M2(Only for fire)
f) Result : 400M3 Water Tank Capacity only for fireFire tank to maintain an individual dedicated fire tank. This fire tank should be separated into two divisions, One for fire sprinkler system & fire hose reel and the other for fire hydrants
SIMON ENGG. PARTNERS 9 OF 28
1) ESFR - Early Suppression Fast Response Sprinkler (or) combination of standard sprinklers for overhead and in-racks
SIMON ENGG. PARTNERS 11 OF 28
170325 litres
170 m3
20250 gallons
76646 litres
77 m3
85163 litres
85 m3
SIMON ENGG. PARTNERS 12 OF 28
28000 litres
28 m3
Fire tank to maintain an individual dedicated fire tank. This fire tank should be separated into two divisions, One for fire sprinkler
PROJECT NO: 1091PROJECT NAME:
PUMP POWER
BHP = GPM * PUMP HEAD (Feet) * SP GRAVITY 3960 * % OF PUMP EFFICIENCY
SAMPLE CALCULATION = 750 GPM * 93 * 13960 * 0.7
= 697502772
= 25.16
1 hp = 750 Watts 18872= 19
1) FIRE PUMP FOR PASFR ADMIN BUILDING
= 400 GPM * 352 * 13960 * 0.7
= 1408002772
= 50.79
1 hp = 750 Watts 38095
= 38
2) 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 * 13960 * 0.7
= 182402772
GPM * PUMP HEAD (Feet) * SP GRAVITY SP GRAVITY = SPECIFIC GRAVITY OF LIQUID 3960 * % OF PUMP EFFICIENCY NORMAL WATER = 1
hp
WattskW
110 meter352 feet
hp
Watts
kW
6 l/s
Litre / Mins 1 galloons = 3.785 litres
gallons / min
60 meter192 feet
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.
WET RISER Wet Riser(Landing Valve) Flow rate = 250 gpmMax No of WR in operation at any time = 1 NoDuration 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 gpmMax No of FH in operation at any time = 2 NoDuration 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 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
SIMON ENGG. PARTNERS 25 OF 28
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 gpmMax No of FHR in operation at any time = 2 NosDuration 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 gpm Total storage volume required = 9000 gallons (Minimum)1 galloons = 3.785 litres Total storage volume required = 9000 gallons * 3.785 34065 litres TOTAL STORAGE TANK VOLUME 34 m3 Pump flow rate required = 2 x 50 gpm = 100 gpmFire hose reel pump Head calculationResidual 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 gpmMax No of FH in operation at any time = 2 NoDuration 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 litres TOTAL STORAGE TANK VOLUME 170 m3 Pump flow rate required = 2 x 250 gpm = 500 gpmFire hose reel pump Head calculationResidual 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 gpmMax No of WR in operation at any time = 1 NoDuration 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)
SIMON ENGG. PARTNERS 26 OF 28
1 galloons = 3.785 litres Total storage volume required = 22500 gallons * 3.785 85163 litres TOTAL STORAGE TANK VOLUME 85 m3 Pump flow rate required = 1 x 250 gpm = 250 gpmFire hose reel pump Head calculationResidual 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 11 m3 FHR 100 GPMFH 28 m3 FH 250 GPM
SAFETY FACTOR 7 m3 HOSE STREAM 50 GPM
TOTAL 80 m3SAFETY FACTOR 50 GPM
TOTAL 750 GPM
Fire Pump Capacity : 750GPM at 8Bar(Electric +Disel+Jockey)
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 SYSETMAccordance with ROP. Coverage will be 30metersFHR Flow rate(Minimum discharge rate) = 0. 5 L/sMax No of FHR in operation at any time = 2 Nos Pump flow rate required = 2 x 50 gpm = 100 gpmFire hose reel pump Head calculationResidual 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.
b) FIRE HYDRANT SYSETMAccordance with NFPA 24. Each FH Flow rate = 250 gpmPump flow rate required = 2 x 250 gpm = 500 gpmFire hose reel pump Head calculationResidual 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 = 9.0 bar Minimum.
e) Table
ITEM FLOW RATE (GPM)
FHR 100 GPMFH 500 GPM
HOSE STREAM( 5%) 30 GPMSAFETY FACTOR(5%) 32 GPM
TOTAL 662 GPM
FIRE PUMP CAPACITY =650GPM @ 11 BAR(pressure required + 20% )