> It should be capable of generating foam suitable for extinguishing oil fires.
> Fire in the protected space will not affect the foam generating equipment
> The foam generator, its sources of power supply, foam-forming liquid and means of controlling the system shall be readily accessible and simple to operate.
High-expansion foam system
> High-expansion foam system in machinery spaces shall be capable of rapidly discharging at a rate of at least 1 m in depth per minute
> The expansion ratio of the foam shall not exceed 1,000 to 1 for high expansion
Low-expansion foam system
> Capable of discharging at a rate of 150mm in depth per 5 min.
> The expansion ratio of the foam shall not exceed 12 to 1