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Foam Demand Calculation Sheet

This document contains calculations for foam demand for fire protection of condensate storage tanks. It calculates the foam solution discharge rates, foam concentrate quantities, and foam application durations needed for primary fire protection of the tanks using foam chambers, supplementary protection using foam hose streams, and protection of diked areas using foam monitors. The total foam concentrate quantity required is estimated to be around 3000 liters. Diaphragm proportioning tanks are recommended to mix and deliver the foam solution.

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john smith
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207 views3 pages

Foam Demand Calculation Sheet

This document contains calculations for foam demand for fire protection of condensate storage tanks. It calculates the foam solution discharge rates, foam concentrate quantities, and foam application durations needed for primary fire protection of the tanks using foam chambers, supplementary protection using foam hose streams, and protection of diked areas using foam monitors. The total foam concentrate quantity required is estimated to be around 3000 liters. Diaphragm proportioning tanks are recommended to mix and deliver the foam solution.

Uploaded by

john smith
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as XLSX, PDF, TXT or read online on Scribd
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CALCULATION SHEET

#REF!
FOAM DEMAND CALCULATION

JOB NO. : STC-0781


FIRE ZONE : 11
LOCATION : Condensate Storage Tank Area
PREP'D : CM
PROJECT : GG Field Development CHK'D : AGK/JH
APP'D : CK
CLIENT : PHE ONWJ REV : 2
DATE : 7-May-14

CONDENSATE STORAGE TANK (BANG-T-050A/B)

10.06 m

9.14 m

Type of Foam Chamber : Type II, Fixed Discharge Outlet


Tank diameter : 10.06 m
Tank height : 9.14 m
Roof : Fixed Roof (Cone)

Primary Fire Protection (Foam Chamber)


Annular Ring Area (Total Surface Area) : 79.49 m2
Foam Application Rate : 4.1 L/min.m2 NFPA 11 Table 5.2.5.2.2
Foam Solution Discharge Rate (Annular Ring Area x Application Rate) : 325.89 L/min
Foam Concentration Type : 3% AFFF
Foam Application Duration : 55 min NFPA 11 Table 5.2.5.2.2
Number of foam pourer required : 1 NFPA 11 Table 5.2.5.2.1
Foam Concentrate Quantity with 20% additional margin (Primary) : 645 ≈ 650 litres For 1 Tank
Fire Water Application Rate (20% Hydraulic Contingency) : 379 L/min
: 100 USGPM For 1 Tank

Supplementary Protection (Foam Hose Stream)


Area to be protected by foam hose stream is small spill fire around condensate tanks.
mobile foam equipment will be connected to water hydrant.
Foam Solution Discharge Rate : 50 gpm NFPA 11 Section 5.9.2.3
Foam Concentration type : 3% AFFF 2
Foam Application Duration 10 min NFPA 11 Table 5.9.2.4
Number of Hose Streams : 1 NFPA 11 Table 5.9.2.2
Foam Concentrate Quantity with 20% additional margin (Total) : 18 gallon
: 68 ≈ 70 litres

Diked Areas - Outdoor (Fire Water-Foam Monitor)


Area to be protected by fire water-foam monitor is dike area of condensate storage tanks in case of pool fire.
Portable foam container will be connected to fire water monitor.
Dike area : 484 m2 For 1 Dike Area
Tank Area (Total Surface Area) : 79.5 m2
Area to be protected : 405 m2
Foam monitor application rate : 6.5 L/min.m2 NFPA 11 Table 5.7.3.2
Foam Solution Discharge Rate (Area to be protected x Application Rate) : 2629 L/min
Foam Concentration Type : 3% AFFF
Foam Application Duration : 30 min NFPA 11 Table 5.7.3.2
Foam Concentrate Quantity with 20% additional margin (Total) : 2840 ≈ 3000 litres
Since OPF Balongan will activate two (2) fire water-foam monitor as together in case of pool fire at dike area, hence foam concentrate quantity of 3000 litres
will be divided for two (2) monitor which each monitor will be 1500 litres
CALCULATION SHEET
#REF!
FOAM MAKER SYSTEM

JOB NO. : STC-0781


FIRE ZONE : 11
LOCATION : Condensate Storage Tanks Area
PREP'D : CM
PROJECT : GG Field Development CHK'D : AGK/JH
APP'D : CK
CLIENT : PHE ONWJ REV : 2
DATE : 7-May-14

DIAPHRAGM (BLADDER) PROPORTIONING TANK


CALCULATION SHEET
#REF!
FOAM MAKER SYSTEM

JOB NO. : STC-0781


FIRE ZONE : 11
LOCATION : Condensate Storage Tanks Area
PREP'D : CM
PROJECT : GG Field Development CHK'D : AGK/JH
APP'D : CK
CLIENT : PHE ONWJ REV : 2
DATE : 7-May-14

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