As per the above reply, please find herewith the flammable product storage criteria based on its flash point (Petroleum Act-1934 - Petroleum Rules, 1976).
Definition of Petroleum as per the Act
Any liquid hydrocarbon or mixture of hydrocarbons or any inflammable mixture (liquid, viscous/solid containing any liquid hydrocarbon).
Classification of Petroleum
This is based on flash point.
Class A - Flash point less than 23°C (LPG)
Class B - Flash point 23°C or more but less than 65°C (Kerosene)
Class C - Flash point 65°C or more but less than 93°C (Furnace Oil, LSHS, LSGR) flash point 93°C or more - not covered under Act.
Storage of any petroleum product covered under the Act requires a storage license. However, some quantities are exempted under sections 7 and 8 as given below.
Exemption Limits
Class A - Not more than 30 liters (i.e., up to 30 liters)
Class B - Not more than 2500 liters and not more than 1000 liters in the receptacle (container)
Class C - Not more than 45000 liters (i.e., up to 45 KL).
Section 7 & 8 for Your Reference
Section 7: No license needed for transport or storage of:
i) Petroleum Class 'B' (Non-Bulk) in quantity not exceeding 2500 liters and in receptacle not exceeding 1000 liters.
ii) Petroleum Class 'C' (In Bulk) in quantity not exceeding 45,000 liters.
Note:
a) 'Non-bulk storage' means storage of petroleum in receptacle/container/tank of water capacity not exceeding 1,000 liters.
b) 'Bulk storage' means storage of petroleum in container/tank of capacity exceeding 1,000 liters.
Section 8: No license needed for import, transport, or storage of petroleum Class 'A' not intended for sale if the total quantity in possession does not exceed 30 liters. However, such quantity of petroleum Class 'A' not requiring a license shall be kept in securely stoppered receptacles of glass or stoneware of capacity not exceeding 1 liter or in receptacle of metal of capacity not exceeding 25 liters.