Water Spray System Calculation for LPG LOT Cylinder Bank

Please note that the installations with multi manifolds above 2000 kg and up to 4000 kg shall have either water sprinkler system or gas monitoring system with local as well as remote alarm system and installation above 4000 kg to 8000 kg shall have both water sprinkler as well as gas monitoring system. Design Reference : IS 15325:2020 Design and Installation of Fixed Automatic Medium Velocity Water Spray System.

Length (in Meters)(Required)

Total length of the LPG Cylinder Bank Area

Width (in Meters)(Required)

Total width of the LPG Cylinder Bank Area

Total Area (Square Meters)

Water Required (LPM/Square Meter)

Design Pressure (in bar)(Required)

Please enter a number from 1.40 to 3.50.

Medium Velocity Spray Nozzle K-Factor(Required)

Spray Angle(Required)

The system shall be hydraulically designed in such a way that the pressure at the hydraulically most unfavourable sprayer shall not be less than 1.4 bar while that at the hydraulically most favourable sprayer shall not exceed 3.5 bar

Type of Cylinders(Required)

Number of Manifolds(Required)

Number of Cyl. in each Manifold(Required)

Rows of Cyl. in each manifold(Required)

Number of Vaporisers(Required)

Total No. of Cyl. in LPG Cylinder Bank

Total LPG inside the LPC Cylinder Bank

Please Check! The total LPG in all the manifold does not cross 2000 kg, so water spray system is not mandatory.

Please Note! The total LPG in all the manifold is below 4000 kg. You can even chose to install gas monitoring system instead of water sprinkler system.

Spray Nozzle Requirement

No. of Spray Nozzles Required

Total Water Requirement (LPM)

Total Water Requrement for Spray Nozzles (LPM)

Total Water Requirement (m³/s)

Total Water Requirement for Spray Nozzles (m3/s)

Total Cyl. and Vaporiser

Total area covered by Spray Nozzels

Actual Area of the LPG Cyl. Bank

Header Piping and Deluge Valve Size

Hose Reel Requirement(Required)

Total Water Requirement (LPM)

This is the total water requirement including Spray Nozzles and Hose Reel Demand

Total Water Requirement (m³/s)

This is the total water requirement including Spray Nozzles and Hose Reel Demand

Velocity Requirement (m/s)(Required)

Please enter a number from 1 to 5.

Ideally for water the velocity should be less than 6

Header Piping Size

Main line up to Deluge Valve

Deluge Valve Size

Reference IS 15325 Table 7

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